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Senior .net developer jobs in Greenwich, CT

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  • .Net Developer

    TSR Consulting 4.9company rating

    Senior .net developer job in Montvale, NJ

    Our client is hiring a Full Stack .Net Developer on a contract basis. Responsibilities Design and develop custom solutions in latest version of Angular, C#.net, Visual Studio and SQL Server Experience working under Azure cloud utilizing PAAS services and setting up pipelines using ADO. Develop, debug, test, and deploy new and existing applications Help to ensure that developed application solutions satisfy business and technical requirements and that standard testing procedures have been followed Design, construct, implement and support client-facing software that meets the business requirements Perform software construction, unit testing and debugging; software construction may include the preparation of new software, reuse of existing code, modification of existing programs, or integration of purchased solutions Interface with internal and external technical staff to define application solutions and resolve problems as needed Act with integrity, professionalism, and personal responsibility to uphold the firm's respectful and courteous work environment. Qualifications: Minimum four year of experience in Angular & .NET web application development Bachelors degree in from an accredited college/university or equivalent work experience Experience in user interface and design of web-based products under Azure cloud. Knowledge of Object-Oriented Principles, Patterns and Practices and knowledge of Agile (Scrum) software development methodologies and leading practices
    $89k-112k yearly est. 5d ago
  • Application Developer

    Medisys Health Network, Inc. 3.7company rating

    Senior .net developer job in Hicksville, NY

    Report accurately and timely to upper management project timelines and status of projects and tickets. Actively working with development team members, architects and related team leads to identify, trial and implement requested project. Owning the processes and leading improvement of the development related activities from design through to release. Working with other team members/leads to ensure processes support the effective transition of projects into and through delivery phases. Monitor Post development/deployment support activates. Administrating Development resources as databases and servers. REQUIRED EDUCATION: BS Degree or equivalent experience REQUIRED SKILLS AND /OR EXPERIENCE: Strong knowledge .Net (VB or C#) Development background/ 3 years minimum experience Strong knowledge of web development frameworks ASPnet, MVC and cross platform frameworks Strong Knowledge of MS SQL, my SQL, SSIS and Stored Procedures Knowledge of Epic API Integration a plus Mobile Development - MAUI (preferred) Good Written/Oral Communication Skills Good Interpersonal Skills Strong Project Management Skills Good Leadership Skills Strong Knowledge of the Clinical/Hospital Environment Strong Problem Solving & Analytical Skills
    $90k-119k yearly est. 5d ago
  • Lead Web Developer

    Open Systems Technologies 4.7company rating

    Senior .net developer job in White Plains, NY

    An insurance company is looking for a Web Developer Lead to join their team in White Plains, NY. Compensation: $150-170k Candidates must be local; no relocation (onsite 3 days/week) Frontend and Backend are equally important for this role. Responsibilities: Drive the end-to-end architecture, development, and delivery of scalable, secure web and mobile portals-including sophisticated front-end interfaces and robust back-end services Partner with cross-functional teams to deliver seamless, high-impact solutions Engineer portal capabilities for key insurance features such as policy management, claims, billing, and pension processing Embed industry-specific compliance and cybersecurity protocols, ensuring portals meet regulatory standards Lead Agile ceremonies, manage sprint cycles, conduct code reviews, and oversee CI/CD pipelines on containerized cloud platforms (AWS) Analyze customer insights, usage patterns, and performance metrics to drive continuous portal optimization Seamlessly integrate legacy systems, third-party APIs, and data sources into modern architectures Design and deploy microservices that connect internal and external systems, enabling dynamic data exchange and real-time functionality Stay at the cutting edge of web development, cloud technologies, and generative AI through ongoing research and innovation Qualifications: A Bachelor's degree in Computer Science, Information Technology, or a related discipline 7+ years of experience in web development, with at least 2 years in a lead role Strong proficiency in JavaScript, React, Angular, Node.js, and RESTful APIs Strong backend development skills in Node.js, Python, Java and databases (SQL, NoSQL) Angular, Python and Databases skills Experience with AWS or Azure, including ECS,Docker, Kubernetes, and other containerization tools Understanding of microservices, serverless architectures, and event-driven systems Understanding of cloud networking fundamentals, including VPCs, Subnets, and scalable architecture on AWS Experience in insurance operations, including claims, policy servicing, and customer support Exposure to GenAI /AI/ML services in AWS, DevOps tooling, and advanced container orchestration preferred
    $150k-170k yearly 1d ago
  • Senior Software Architect and Engineer Trading Systems

    Luxoft

    Senior .net developer job in New City, NY

    Project Description: The project is based on developing and operating inter-dealer marketplace, which is an innovative platform that provides users with fast, efficient price discovery and electronic execution. Compensation 9k-11k USD per month Responsibilities: - Design and develop critical backend trading system components such as the matching engine, order routing and credit calculation component - Collaborate with the CEO/Product Owner and the Senior Business Analyst/Product Manager to design new enhancements to the trading platform - Triage critical production issues and provide rapid response during trading system incidents as part of the level 3 response team Mandatory Skills Description: 10+ years developing production software in Java 5+ years developing electronic trading front end application covering one or more of the following asset classes: equities, FX, options, or fixed income - Design and develop efficient, defect-free code under tight time constraints - Exceptional analysis and triage of real-time production systems - Clear, concise and accurate written communication skills - Strong work ethic and an entrepreneurial spirit; thrive in a high-pressure environment Qualifications - Bachelor of Science, Master of Science or equivalent degree in computer science, computer engineering Nice-to-Have Skills Description: 2+ years working as a software engineer in a start-up environment 2+ years developing software using the Genesis low-code environment 3+ years developing systems deployed in Amazon Web Services Languages: English: C1 Advanced
    $115k-154k yearly est. 1d ago
  • Senior Java Developer - Heavy DevOps

    Global Systems Search Inc.

    Senior .net developer job in Norwalk, CT

    Java Developer - Heavy DevOps (Onsite, South Norwalk CT) Type: Full-time • Permanent (No Sponsorship Available) Schedule: Onsite 5 days per week A confidential client in the security-focused software space is seeking a hands-on Java Developer with strong DevOps expertise to join their engineering team. This organization is building a suite of Zero Trust products and secure mobile/desktop applications, with the first major iOS release imminent and several follow-on components already in development. This is a high-impact hire working directly with the technical leadership team on core backend services, cloud infrastructure, secure storage frameworks, and new product iterations. Ideal for someone who thrives in a small, fast-moving environment, loves deep technical challenges, and wants to own significant architecture decisions. Responsibilities Develop and enhance Java server-side components supporting multiple security-driven applications. Build and manage a containerized cloud environment using Kubernetes and AWS (Azure acceptable). Implement multi-threaded Java services, messaging components, and high-performance backend systems. Own CI/CD pipelines, deployment automation, reliability engineering, and cloud orchestration. Contribute to architecture, performance tuning, and secure backend framework development. Collaborate closely with technical leadership to iterate on new features and expand existing product capabilities. Work fully onsite in South Norwalk, CT as part of a small engineering team. Required Experience Strong Java engineering background and significant DevOps experience - or - Deep DevOps expertise with solid Java programming capability Hands-on experience with: Kubernetes AWS (or Azure) Containerization (Docker, orchestration tooling) Multi-threading, messaging, concurrency in Java CI/CD pipelines and automation Cloud infrastructure and observability tooling Familiarity with secure application design, encryption, or Zero Trust principles is a plus. Comfort working directly with senior technical stakeholders in a high-ownership environment. Must be able to work onsite 5 days per week in South Norwalk Ideal Candidate Traits Highly intelligent, low-ego, deeply technical. Strong problem-solving skills and ownership mentality. Thrives in an early-stage, craftsmanship-oriented environment. Comfortable balancing both development and DevOps responsibilities.
    $95k-123k yearly est. 1d ago
  • AV Systems Programmer

    AV Pros Ny 4.3company rating

    Senior .net developer job in Hicksville, NY

    At AV Pros NY, we design, engineer, and integrate advanced audiovisual and technology systems for commercial, corporate, educational, and entertainment environments. Our team is passionate about delivering reliable, intuitive, and high-performance AV solutions that empower people to connect, communicate, and collaborate. We are seeking a skilled, hands-on AV Systems Programmer to join our growing engineering team in Hicksville, NY. The ideal candidate will have a strong background in AV programming, troubleshooting, and control systems integration, along with a passion for creating seamless, user-friendly experiences. Key Responsibilities Programming & Integration Program, test, and deploy AV control systems using Crestron, Q-SYS and Extron platforms. Develop automation code to ensure stable, efficient, and intuitive system operation. Design and implement network-based AV and AV-over-IP systems for commercial and enterprise environments. Build clean, user-focused graphical interfaces (GUIs) aligned with AV Pros NY design standards. Integrate UC platforms (Teams, Zoom, Webex), codecs, digital signage, and BYOD systems. Commissioning, Testing & Support Commission and validate newly installed AV systems, ensuring all components perform to design intent. Perform in-house and onsite testing, troubleshooting, and system verification. Utilize tools such as Crestron XIO Cloud and Q-SYS Reflect for monitoring and system management. Deliver end-user training, documentation, and quick-start guides for seamless adoption. Conduct preventive maintenance and implement updates to enhance performance and reliability. Collaboration & Documentation Collaborate with Project Managers, Design Engineers, and Field Technicians to transform system designs into fully functional programs. Produce and maintain accurate system documentation, including source code, configurations, and GUI screenshots. Write functional narratives and daily task reports for internal and client records. Mentor junior programmers and help establish company-wide programming standards. Innovation & R&D Burn-in programming in R&D Lab, test code and GUI functionality in a controlled environment. Develop and refine standard programming templates and commissioning workflows. Participate in testing new AV and network automation solutions. Networking Responsibilities Collaborate with the networking team to ensure secure, optimized connectivity across AV environments throughout the installation cycle. Qualifications Experience 5-10 years of experience in professional AV programming, commissioning, and integration. Proven expertise in Crestron, Q-SYS and Extron programming environments. Strong understanding of AV system design, signal flow, and networked AV (AV-over-IP). Experience with UC platforms, audio DSP configuration, and enterprise-level AV/IT systems. Experience programming and deploying Unifi network devices preferred. Education Certifications (Preferred) Crestron Certified Programmer Q-SYS Level 2 or higher Dante Level 1 & Level 2 CTS, CTS-I, or CTS-D Extron Control Professional Certification Nice to Have Bachelor's degree in Computer Science, Electrical Engineering, Audio Engineering, or related field preferred. Skills & Attributes Strong proficiency in programming/scripting languages such as SIMPL, Lua, Python, and HTML. Excellent problem-solving and analytical abilities with a sharp attention to detail. Proficiency with Microsoft Office (Word, Excel, Outlook). Exceptional organizational and documentation skills. Strong communication and client-facing abilities. Self-motivated and able to work both independently and as part of a team. Passionate about emerging AV and IT technologies. Results-driven mindset with a focus on quality and reliability. Why Join AV Pros NY Be part of a collaborative, innovative team that values craftsmanship, precision, and teamwork. Work on cutting-edge AV, IT, and automation projects for top-tier clients. Competitive pay, annual performance-based bonuses, and opportunities for certification and professional growth. Access to training, mentorship, and continuing education. Supportive company culture that rewards initiative, loyalty, and technical excellence.
    $73k-104k yearly est. 2d ago
  • Senior Backend Software Engineer (.NET/C#)

    Executive Alliance 3.2company rating

    Senior .net developer job in Garden City, NY

    Our client is an AI powered ecommerce/marketing software company. Their suite of products integrates Web Content Management, eCommerce, eMarketing, Social Media management, and Web Analytics. They are seeking a Backend Software Engineer to play a key role in building, integrating, and optimizing their flagship site search product. Will design, develop, and maintain API-first backend services using C#, NET, NoSQL, AWS technologies. Work closely with product and engineering teams to deliver secure, scalable, and efficient solutions. Design new features to work with AWS services in a cost-effective, automated and scalable manner. ***ONSITE in GARDEN CITY, NY*** ***DIRECT HIRE POSITION**** ***NO C2C or SPONSORSHIP*** This position is an excellent opportunity for someone who enjoys solving complex problems, working independently and in a collaborative environment, and has a strong interest in search technologies. Responsibilities Design, develop, and maintain API-first backend services using C# Work closely with product and engineering teams to deliver secure, scalable, and efficient solutions. Design new features to work with AWS services in a cost-effective, automated and scalable manner. Support ecommerce platform integrations. Collaborate with the infrastructure team on deployments, monitoring, and performance tuning. Contribute to technical design discussions and help drive architectural decisions. Write clean, maintainable, and testable code. Required Qualifications 3-10 years of professional software engineering experience MUST HAVE eCommerce or Search Technology experience. Examples: Lucene, Elasticsearch/OpenSearch, Algolia, Coveo, SearchSpring, Klevu, Bloomreach. BigCommerce, Optimizely Configured Commerce, Shopify, Magento/Adobe Commerce, WooCommerce, Shopware, Unilog. Must HAVE Strong proficiency in backend development. NET/C# strongly preferred Hands-on experience with cloud platforms (AWS preferred, GCP and Azure also accepted). Strong understanding of APIs, microservices, and integration patterns. Solid knowledge of relational databases and/or NoSQL databases. Ability to work on-site in Garden City, NY.
    $110k-145k yearly est. 3d ago
  • Software Engineer

    JSG (Johnson Service Group, Inc.

    Senior .net developer job in Hauppauge, NY

    JSG is hiring a Software Engineer in Hauppauge, NY. Must be a US Citizen and work onsite. Salary range: $127K-$137K - Bonus Our charter is to develop fuel measurement, management and inserting systems for commercial and defense airframers. The Software Engineering team works closely with the Systems and Electronic Hardware Engineering teams to develop, qualify and certify these technologies as products for our customers in aerospace and industrial markets. Develop embedded software using C and/or model-based tools such as SCADE Develop high level and low level software requirements Create requirements-based test cases and verification procedures Perform software integration testing on target hardware using both real and simulated inputs/outputs Analyze software requirements, design and code to assure compliance to standards and guidelines Perform traceability analysis to customer specification requirements to software code Participate in software certification audits, e.g. stages of involvement (SOI) BS in Software Engineering, Computer Engineering, Computer Science or related field 5+ years of experience performing software development, verification and/or integration Strong technical aptitude with analytical and problem-solving capabilities Excellent interpersonal and communication skills, both verbal and written Ability to work in a team environment, cultivate strong relationships and demonstrate initiative Experience with C programming language Experience with model-based software development using SCADE Experience developing embedded software control systems Experience planning and executing projects using Agile software development methodology Experience managing requirements using DOORS or DOORS Next Gen (DNG) Experience with digital signal processing or digital filter design Experience with ARM microprocessors Experience with serial communication protocols (e.g. CANbus, ARINC, RS-232) Familiarity with aerospace (e.g., DO-178, DO-330, DO-331) and/or industrial (e.g., IEC 61508) software certification requirements Familiarity with functional safety standards such as ISO 13489, IEC 61508, IEC 62061, ISO 26262 or ARP4761Software Engineer to join our team. We are looking for a candidate who has working experience designing, developing and verifying embedded software in aerospace and/or industrial applications. The candidate should be familiar with industry-standard software development and design assurance practices (such as DO-178, ISO 26262, EN 50128, IEC 61508 or IEC 62304) and their application across the entire software development lifecycle. Johnson Service Group (JSG) is an Equal Opportunity Employer. JSG provides equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, marital status, protected veteran status, or any other characteristic protected by law.
    $80k-107k yearly est. 2d ago
  • Web Developer (Adobe Experience Manager)

    Motocol

    Senior .net developer job in Ridgefield Park, NJ

    Our client is seeking an experienced Adobe AEM developer to assist us with the implementation and maintenance of a large public-facing web site. The candidate must have a solid development background across multiple technical disciplines including AEM development and J2EE web application development. Qualifications Responsibilities: · Experienced Java Developer with knowledge in web framework based development and internet technologies · Develop digital consumer experiences based on foundation of the Adobe AEM product suite, including AEM, CRX, Target and DAM · Translate marketing and web site needs into AEM specific recommendations and solutions · Leverage AEM, other state-of-the-art technologies, and integration patterns to solve cross-departmental challenges · Design and improve internal development methodologies around Adobe AEM solution · Deliver a robust self-service environment for the end user community · Design and code from specifications, analyzes, evaluates, tests, debugs, documents, and implements complex software apps · Create and integrate content-driven applications on top of AEMs core platform and integrate with E-commerce solutions and search engines · Work with technology teams to build and maintain web applications using Adobe's Experience Manager CMS to include site architecture, custom components, workflow development, Digital Asset Management (DAM) · Integrate websites with web analytics tools and analyze/report on analytics data Qualifications: · Associate's Degree in Computer Science or related field (Bachelor's Preferred) · 5-7 years in Internet related system development for a public-facing internet web site. (Candidate must have prior experience with public-facing/internet web site development) · Exposure to AEM Sites preferred · Experience working with CMS platforms, and 5+ years of experience building with Adobe Experience Manager/CQ5 · Experience developing applications, templates, and components for the Adobe AEM product (WCM, DAM, CRX) · Experience customizing workflows and integration with other enterprise systems · Demonstrated experience with Java, JavaScript, HTML5, CSS3 and related technologies · Working knowledge and understanding of the following: Apache Sling, Apache Felix, Apache and App server logs, OSGi, RESTful web services, Javascript, jQuery, AJAX, JSON, HTML, CSS · Ability to write complex programs, analyze code changes and make suggestions to improve code complexity for maintainability and scalability · Ability to reason logically and creatively, identifying problems, drawing valid conclusions from the data available, and developing effective solutions while applying creative thinking in the design and development of high performing web application · Knowledge and demonstrated experience with cross-browser, cross-platform, cross-device issues (IE, Firefox, Safari, mobile devices, etc.) Additional Information All your information will be kept confidential according to EEO guidelines Salary Range: $90k-$120k + up to 10% Annual Performance Bonus Benefits: Medical, Dental, Vision, Prescription, 401(k), Vacation, Sick Days Required Degree: Associates Degree in Computer Science or related field Required Experience: 3+ years OPEN TO H1B Transfer!
    $90k-120k yearly 1h ago
  • iOS Software Developer

    Kliger Weiss Infosystems

    Senior .net developer job in Greenvale, NY

    KWI is looking for a smart, curious, hard-working, and creative iOS Developer to join our mobile application development team. The right person for this role possesses a passion for pushing mobile technologies to the limits and will work with our team to design and build the next generation of our KWI Cloud 9 mobile application. This iOS Developer will be responsible for the design, development, and ongoing support of the mobile technology platform. ABOUT THE JOB: Design and develop using Objective-C and Swift using Xcode to develop new features to our Cloud 9 Mobile iOS application Collaborate with cross-functional teams to define, design, and develop new features Take requirements and specs from our Product team, understand the business need and use case, then take those requirements and specs from design to development Support the Cloud 9 Mobile application in its entirety, including working on bug fixes and improving application performance, reliability, and stability Continuously discover, evaluate, and implement new technologies to maximize development efficiency Collaborate with internal and offshore development resources, acting as a technical liaison ABOUT YOU: You're comfortable communicating architecture to all levels of management and customers You have strong knowledge of software development methodologies and processes Your track record includes the design and release of high-quality, high-performance enterprise software products/applications You have excellent decision-making skills with the ability to balance conflicting interests in a complex and fast-paced environment You have strong analytical, prioritization, and troubleshooting skills You have excellent written and verbal communication skills BA/BS in Computer Science or related field 5+ years of software development experience Advanced knowledge of Objective-C and Swift 0-3 years of iOS development ABOUT US: KWI. FIRST IN SaaS. FIRST IN THE CLOUD. We are a small team with a big vision: to be the premier provider of cloud technology solutions for retailers. KWI's culture is rooted in our core values - commitment, respect & dignity, accountability, reliability, passion, and caring. Our office environment is casual and fun - we recharge with a quick afternoon ping-pong game and are a culture that celebrates. We celebrate birthdays and holidays, and victories and failures. We encourage our people to take risks, to challenge the status quo, to improve processes, and to be better every day. We have a team of passionate and dedicated employees who are committed to making themselves and our clients better. We offer complete Cloud-based solutions for a broad range of clients in specialty retailing. Since 1985 we've helped retailers achieve success through use of our leading systems including, merchandising, POS, Mobile POS, CRM, and loss prevention. We're a privately held, debt-free and 100% management owned company. Our company plays a critical role for our retail clients and we continue to grow! We offer a collaborative work environment - even virtually! - with colleagues who have a passion for retail and technology. At KWI, we know that cultivating diversity and fostering an inclusive work environment is critical to our impact and success. We create an environment where no individual is advantaged or disadvantaged because of their background. We offer equal opportunity employment regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability status, age, marital status, or protected veteran status. With a commitment to maintaining a bias-free environment in which harassment is prohibited, we respect cultural diversity and comply with the laws of the places in which we operate. We expect our business partners, suppliers, clients, and all our team members to uphold these commitments.
    $79k-104k yearly est. Auto-Apply 60d+ ago
  • Web Application Developer

    Opexpert

    Senior .net developer job in Greenwich, CT

    My Client is headquartered in Greenwich, Connecticut and has over 1,200 employees in its offices in the USA, Switzerland, Canada, Hong Kong, UK, Australia, Hungary, Russia, Japan, India, China and Estonia. My Client is regulated by the SEC, FINRA, NYSE, FCA and other regulatory agencies around the world. Job Description 1. Design, develop and maintain responsive web applications for client's web-based account registration, account maintenance, tax, and compliance systems. 2. Typical projects will be focused on web client/web server development and include middleware and backend integration. 3. The majority of development will be using Java and Java Script with some exposure to PL/SQL, Python, Unix shell scripts and other general-purpose languages and tools. Qualifications 1. BS/MS Computer Science, Engineering, Mathematics 2. Strong knowledge of programming concepts and algorithms 3. Strong knowledge of Java or similar general purpose OO language. 4. Experience with browser markup and scripting (JScript, HTML5) 5. Experience with database backed web applications. 6. Experience with concurrency 7. Prior experience (including college projects) with interactive Web applications. 8. Familiar with web applications, concepts, and tools Additional Information All your information will be kept confidential according to EEO guidelines.
    $72k-95k yearly est. 1h ago
  • Software Developer 830068

    Capstone Search Advisors

    Senior .net developer job in Greenwich, CT

    Fairfield County Hedge Fund is seeking a Senior Software Developer to join their Core Development which is responsible for building in-house systems and integrating and customizing third-party applications essential to the firm's operation. They are currently modernizing their proprietary on-premises systems into cloud-native, web-based solutions. This is a great opportunity for a talented backend developer to make a major impact on critical financial software used across the firm. This role Primary Responsibilities: • Build and maintain custom .NET applications including STP trade platform, portfolio management tools, and front-office modules • Drive modernization efforts by contributing to cloud and web transformation initiatives • Integrate and extend third-party platforms like Workday and Salesforce • Collaborate with business and project teams to translate requirements into scalable solutions • Troubleshoot performance issues and implement robust fixes Qualifications/Skills Required: • 7+ years in software development with C# and Web API • Strong SQL experience and relational database design • Experience with DevOps, CI/CD pipelines, Terraform, and Git • Strong academic track record with degree in Computer Science or related field • Excellent problem-solving and communication skills • Self-motivated, quick learner, and demonstrated ability for learning new technology Preferred: • Experience in Azure cloud development • Familiarity with Databricks or Snowflake • Knowledge of messaging technologies such as RabbitMQ, Kafka, or Azure Service Bus • Background in modernizing and transitioning software architecture and technology • Understanding of Workday and/or Salesforce • Front-end development experience using React • Scripting skills in Python and PowerShell • Awareness of accounting and finance fundamentals and work experience in the financial services industry • Proficiency in Excel automation including building functions, macros, and custom add-ins
    $74k-97k yearly est. 60d+ ago
  • Full Stack .Net Software Engineer

    Bridgeline Digital, Inc. 4.5company rating

    Senior .net developer job in Garden City, NY

    About the Role We are seeking a talented Full Stack .Net Software Engineer to join our on-site team in Garden City, NY. Bridgeline is hiring full stack engineers for roles in R&D, Services and Technical Support. Team matching is a key part of our hiring process once candidates complete initial screening and technical interviews. The ideal candidate has strong frontend and backend .Net development experience. You will play a key role in building, integrating, optimizing, and supporting our flagship site search product, HawkSearch. This position is an excellent opportunity for someone who enjoys solving complex problems, working independently and in a collaborative environment, and has a strong interest in search technologies. Responsibilities * Design, develop, and maintain API-first backend services using C# * Work closely with product and engineering teams to deliver secure, scalable, and efficient solutions. * Design new features to work with AWS services in a cost-effective, automated and scalable manner. * Support ecommerce platform integrations. * Collaborate with the infrastructure team on deployments, monitoring, and performance tuning. * Contribute to technical design discussions and help drive architectural decisions. * Write clean, maintainable, and testable code. Required Qualifications * 3+ years of professional software engineering experience. * Strong proficiency in full stack .net development * Hands-on experience with AWS * Strong understanding of APIs, microservices, and integration patterns * Solid knowledge of relational databases and/or NoSQL databases * Ability to work on-site in Garden City, NY. Strongly Desired Skills * Experience with search technologies such as: Lucene, Elasticsearch/0penSearch, Algolia, Coveo, SearchSpring, Klevu, Bloomreach. * Experience with ecommerce systems such as: BigCommerce, 0ptimizely Configured Commerce, Shopify, Magento/Adobe Commerce, WooCommerce, Shopware, Unilog. * Experience with LLM technology - model selection, prompt engineering, tuning, MCP. * Exposure to CI/CD pipelines and containerization (Docker, Kubernetes). * Strong troubleshooting and debugging skills. * Familiarity with JIRA & Confluence. * Salesforce experience is a plus. What We Offer * Competitive salary and benefits package. * Collaborative, growth-oriented work environment. * Opportunity to work with modern technologies and contribute to impactful projects.
    $84k-113k yearly est. 28d ago
  • Web Developer

    Bluu, Inc.

    Senior .net developer job in Hackensack, NJ

    Bluu Inc. is provider of payment processing services, and a developer of Point-Of-Sales solutions. We provide one-stop shopping or payment processing, POS hardware and software, online ordering, online booking appointment, gift card, and loyalty program solution. Location: Hackensack, NJ Full Tim, On-Site Position Description: Define, implement and maintain Payment Processing Gateway EMV (Europay, MasterCard and Visa) certification Enable secure and high-availability solutions Participate in peer design and code reviews Design, develop, consumer, and maintain well-defined APIs Create and utilize automated unit tests to ensure the quality of code Participate in broader architectural reviews Research and proof-of-concept work with new technologies Provide estimates and technical feasibility guidance on prospective work Requirements: 2+ years experience in .Net framework leveraging ASP.Net, .Net Core and C#, and HTML/CSS web development, experience with java and Android is a plus 2+ years experience in database principles, such as MSSQL server, experience with NoSQL is a plus Knowledge and experience in socket programming Knowledge and experience in multithreading programming - (asynchronous programming, race conditions, and deadlock) Knowledge and experience in WCF (Windows Communication Foundation) & REST API design and implementation Self-motivated, quick learner who can manage multiple projects with moderate direction Familiarity with Agile methodologies Strong communications skills Bilingual in Korean and English Required Benefits: Group Health Insurance Life Insurance 401k matching, Paid Vacation and Sick Time Paid Holidays Lunch Support Gym Support
    $67k-90k yearly est. Auto-Apply 60d+ ago
  • Java Web Application Developer - Fluency in Mandarin is Required

    Premium Technology 3.8company rating

    Senior .net developer job in Lodi, NJ

    We are leading wholesaler of restaurant and food service supplies and equipment, distributing across the North America, headquartered in Bergen County, NJ. We are currently seeking Web Application Developer to join our fast growing team. The Web Application Developer will assist a great team in the development and delivery of next generation order processing and accounting applications. A good candidate should have a "can-do" attitude, work well in a cross-functional environment. Candidate should be a self-starter, quick learner and great team player. Company offers ideal candidate competitive salary and benefits package. Job Description Ability to apply analytical and problem-solving skills to solve design and coding problems; Strong hands-on technical experience with JAVA SE/J2EE web-based User Interfaces, Rich Internet Applications, n-tier application architectures; Strong SQL knowledge on SQL server 2005/2008/2012; Ability to work effectively as a team member, across project teams, and independently; Possess good written/verbal communication and interpersonal skills; Legacy application support. Qualifications A minimum of 4 years related experience; Experience with projects from inception to completion; Proven expertise in developing, and delivering multi-tier enterprise applications; Strong knowledge of HTML, Javascript, CSS, AJAX Experienced with Java-based web application environments and frameworks (Apache, Tomcat, Eclipse, Spring); Strong SQL Skills, working knowledge in database interaction (SQL Server, Views, Stored Procedures, Functions, .etc); Must be skilled in Object Oriented programming, software design and testing methodologies; Ability to work effectively as a team member, across project teams, and independently; Nice To Have: Knowledge of web 2.0 javascript libraries (SmartClient, Ajax); Must bilingual in Mandarin/English. .NET knowledge is a plus Additional Information
    $80k-101k yearly est. 1h ago
  • Software Developer - .NET

    Orion Innovation 3.7company rating

    Senior .net developer job in Montvale, NJ

    Orion Innovation is a premier, award-winning, global business and technology services firm. Orion delivers game-changing business transformation and product development rooted in digital strategy, experience design, and engineering, with a unique combination of agility, scale, and maturity. We work with a wide range of clients across many industries including financial services, professional services, telecommunications and media, consumer products, automotive, industrial automation, professional sports and entertainment, life sciences, ecommerce, and education. Summary: Full stack Developer experienced in Angular 10+, TypeScript, .NET Core, C#, Azure SQL Proficiency working in Angular SPA applications Experience in Server-side technologies like .Net Core to build RESTful web services Experience working with cloud technologies and services; Azure preferred Experience delivering serverless cloud solutions using PAAS model Experience using Azure App Service, Azure SQL, Service Bus, API Gateway Management, etc. Experience writing SQL Stored Procedures, Functions and ability to troubleshoot performance issue with SQL queries. Exposure to Microservices design patterns like pub/sub messaging, synchronous/asynchronous communication, etc. Experience with distributed version control systems Azure DevOps/Git Any Azure cloud certification from Microsoft preferred Experience or exposure to Agile development methodology Act with integrity, professionalism, and personal responsibility to uphold the firm's respectful and courteous work environment. Orion is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, citizenship status, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Candidate Privacy Policy Orion Systems Integrators, LLC and its subsidiaries and its affiliates (collectively, “Orion,” “we” or “us”) are committed to protecting your privacy. This Candidate Privacy Policy (orioninc.com) (“Notice”) explains: What information we collect during our application and recruitment process and why we collect it; How we handle that information; and How to access and update that information. Your use of Orion services is governed by any applicable terms in this notice and our general Privacy Policy.
    $80k-104k yearly est. Auto-Apply 6d ago
  • Software Engineer

    Collabera 4.5company rating

    Senior .net developer job in Englewood Cliffs, NJ

    Established in 1991, Collabera is one of the fastest growing end-to-end information technology services and solutions companies globally. As a half a billion dollar IT company, Collabera's client-centric business model, commitment to service excellence and Global Delivery Model enables its global 2000 and leading mid-market clients to deliver successfully in an increasingly competitive marketplace. With over 8200 IT professionals globally, Collabera provides value-added onsite, offsite and offshore technology services and solutions to premier corporations. Over the past few years, Collabera has been awarded numerous accolades and Industry recognitions including. • Collabera awarded Best Staffing Company to work for in 2012 by SIA. (hyperlink here) • Collabera listed in GS 100 - recognized for excellence and maturity • Collabera named among the Top 500 Diversity Owned Businesses • Collabera listed in GS 100 & ranked among top 10 service providers • Collabera was ranked: • 32 in the Top 100 Large Businesses in the U.S • 18 in Top 500 Diversity Owned Businesses in the U.S • 3 in the Top 100 Diversity Owned Businesses in New Jersey • 3 in the Top 100 Privately-held Businesses in New Jersey • 66th on FinTech 100 • 35th among top private companies in New Jersey *********************************************** Collabera recognizes true potential of human capital and provides people the right opportunities for growth and professional excellence. Collabera offers a full range of benefits to its employees including paid vacations, holidays, personal days, Medical, Dental and Vision insurance, 401K retirement savings plan, Life Insurance, Disability Insurance. Job Description Seeking a senior software Engineer to manage and build software solutions across company Digital Platform. The lead role requires hands-on software development skills, deep technical expertise across the entire software delivery process, from content generation to delivery. The engineer will work closely within the tech lead to bring enhancements to a reality while managing all aspects of the software development lifecycle. Required Technical & Leadership Skill Sets  BS degree or higher in Computer Science with a minimum of 7+ years of relevant, broad engineering experience is required  Possess expert knowledge in Performance, Scalability, Security, Enterprise System Architecture, and Engineering best practices.  Possess knowledge of a broad range of data structures and algorithms and know how, when and when-not to use them.  Expertise in all facets of web development including front- and backend technologies.  Experience working on large scale, high traffic web sites.  Experience working with XML, JSON and other data formats.  Experience working with XSL, Smarty, Velocity and other template engines.  Extensive experience styling web applications using CSS 2/3. Experience in SASS, LESS is a plus.  Experience building asynchronous one page web applications using Ajax, CORS.  Experience with responsive design, developing for mobile web and tablets  Experience with full LAMP stack development including server side development and client side technologies including HTML5, CSS3 and advanced Javascript Languages and Software Packages:  Languages: PHP (5.x +)  Web Technologies: XML, JSON, SOAP and RESTful web services, Smarty  Front End: jQuery, OO Javascript, HTML5, CSS3  Framework : MVC Framework like Zend or Struts/Spring  Database: RDBMS like MySQL, Oracle  Tools: SVN, Eclipse  Others: Unix shell scripting Qualifications Personal Skills:  Strong experience working with multi-site development teams.  Strong Communication skills (verbal and written) with an ability to work in a highly collaborative, multi-country/time zone environment.  Good organizational skills with the ability to track and prioritize numerous tasks.  Proactive personality with a proven track record of following through and delivering on responsibilities.  Highly adaptive and capable of being an individual contributor and working as part of an extended team. Additional Information All your information will be kept confidential according to EEO guidelines.
    $73k-98k yearly est. 1h ago
  • Software Engineer - Early Career (USA)

    Trexquant Investment 4.0company rating

    Senior .net developer job in Stamford, CT

    Job Description Trexquant is a growing systematic fund at the forefront of quantitative finance, with a team of world-class researchers and engineers. As we continue to expand our trading operations, we are investing heavily in building the next generation of our quantitative research & trading platform. We are seeking an Early Career Software Engineer with strong programming skills to join our engineering team. In this role, you will work closely with experienced engineers and quantitative researchers to develop the infrastructure that powers systematic trading, including data pipelines, back testing tools, and execution systems. You will have the opportunity to contribute to greenfield development projects, where you'll help build new systems from the ground up, driving innovation and scalability in our technology stack. Responsibilities Full lifecycle development of low-latency, high-throughput research and trading systems using C++, C, Java, or Rust Build and optimize data processing pipelines to ensure reliable access to large, high-quality datasets. Assist in developing tools for back testing, model training, and strategy evaluation. Collaborate with researchers and traders to deliver technical solutions that improve research productivity and trading performance. Participate in code reviews, testing, and documentation to maintain high-quality standards. Stay abreast of emerging technologies, tools, and best practices, bringing innovative ideas to continuously improve our systems. Requirements BS/MS degree in Computer Science, or a related STEM field Strong knowledge of data structures, algorithms, and object-oriented programming. Proficiency in one or more programming languages: C++, C, Python, Java, or Rust. Familiarity with Linux environments Excellent problem-solving skills and ability to learn quickly in a collaborative team setting. Benefits Competitive salary plus bonus based on individual and company performance. Collaborative, casual, and friendly work environment. PPO health, dental, and vision insurance premiums fully covered for you and your dependents. Pre-tax commuter benefits. Weekly company meals. Trexquant is an Equal Opportunity Employer.
    $77k-109k yearly est. 9d ago
  • Full Stack .Net Software Engineer

    Bridgeline 4.5company rating

    Senior .net developer job in Garden City, NY

    About the Role We are seeking a talented Full Stack .Net Software Engineer to join our on-site team in Garden City, NY. Bridgeline is hiring full stack engineers for roles in R&D, Services and Technical Support. Team matching is a key part of our hiring process once candidates complete initial screening and technical interviews. The ideal candidate has strong frontend and backend .Net development experience. You will play a key role in building, integrating, optimizing, and supporting our flagship site search product, HawkSearch. This position is an excellent opportunity for someone who enjoys solving complex problems, working independently and in a collaborative environment, and has a strong interest in search technologies. Responsibilities Design, develop, and maintain API-first backend services using C# Work closely with product and engineering teams to deliver secure, scalable, and efficient solutions. Design new features to work with AWS services in a cost-effective, automated and scalable manner. Support ecommerce platform integrations. Collaborate with the infrastructure team on deployments, monitoring, and performance tuning. Contribute to technical design discussions and help drive architectural decisions. Write clean, maintainable, and testable code. Required Qualifications 3+ years of professional software engineering experience. Strong proficiency in full stack .net development Hands-on experience with AWS Strong understanding of APIs, microservices, and integration patterns Solid knowledge of relational databases and/or NoSQL databases Ability to work on-site in Garden City, NY. Strongly Desired Skills Experience with search technologies such as: Lucene, Elasticsearch/0penSearch, Algolia, Coveo, SearchSpring, Klevu, Bloomreach. Experience with ecommerce systems such as: BigCommerce, 0ptimizely Configured Commerce, Shopify, Magento/Adobe Commerce, WooCommerce, Shopware, Unilog. Experience with LLM technology - model selection, prompt engineering, tuning, MCP. Exposure to CI/CD pipelines and containerization (Docker, Kubernetes). Strong troubleshooting and debugging skills. Familiarity with JIRA & Confluence. Salesforce experience is a plus. What We Offer Competitive salary and benefits package. Collaborative, growth-oriented work environment. Opportunity to work with modern technologies and contribute to impactful projects.
    $84k-113k yearly est. 26d ago
  • Java Web Application Developer - Fluency in Mandarin is Required

    Premium Technology 3.8company rating

    Senior .net developer job in Lodi, NJ

    We are leading wholesaler of restaurant and food service supplies and equipment, distributing across the North America, headquartered in Bergen County, NJ. We are currently seeking Web Application Developer to join our fast growing team. The Web Application Developer will assist a great team in the development and delivery of next generation order processing and accounting applications. A good candidate should have a "can-do" attitude, work well in a cross-functional environment. Candidate should be a self-starter, quick learner and great team player. Company offers ideal candidate competitive salary and benefits package. Job Description Ability to apply analytical and problem-solving skills to solve design and coding problems; Strong hands-on technical experience with JAVA SE/J2EE web-based User Interfaces, Rich Internet Applications, n-tier application architectures; Strong SQL knowledge on SQL server 2005/2008/2012; Ability to work effectively as a team member, across project teams, and independently; Possess good written/verbal communication and interpersonal skills; Legacy application support. Qualifications A minimum of 4 years related experience; Experience with projects from inception to completion; Proven expertise in developing, and delivering multi-tier enterprise applications; Strong knowledge of HTML, Javascript, CSS, AJAX Experienced with Java-based web application environments and frameworks (Apache, Tomcat, Eclipse, Spring); Strong SQL Skills, working knowledge in database interaction (SQL Server, Views, Stored Procedures, Functions, .etc); Must be skilled in Object Oriented programming, software design and testing methodologies; Ability to work effectively as a team member, across project teams, and independently; Nice To Have: Knowledge of web 2.0 javascript libraries (SmartClient, Ajax); Must bilingual in Mandarin/English. .NET knowledge is a plus Additional Information
    $80k-101k yearly est. 60d+ ago

Learn more about senior .net developer jobs

How much does a senior .net developer earn in Greenwich, CT?

The average senior .net developer in Greenwich, CT earns between $78,000 and $143,000 annually. This compares to the national average senior .net developer range of $72,000 to $124,000.

Average senior .net developer salary in Greenwich, CT

$106,000

What are the biggest employers of Senior .NEt Developers in Greenwich, CT?

The biggest employers of Senior .NEt Developers in Greenwich, CT are:
  1. Treehouse Strategy and Communications
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