Applications developer jobs in Central Islip, NY - 322 jobs
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LLM Applications Lead for Quant Trading
Trexquant Investment LP 4.0
Applications developer job in Stamford, CT
A leading hedge fund firm in Stamford is seeking a Head of LLM Application Team to spearhead the development of innovative AI tools. The ideal candidate will have substantial experience with LLM technologies and will lead a team of researchers and engineers. Key responsibilities include designing advanced trading tools and guiding the application of LLM advancements in systematic investing. Attractive salary and comprehensive benefits offered.
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$102k-136k yearly est. 4d ago
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Informatica Cloud Developer
Govserviceshub
Applications developer job in Stamford, CT
Informatica Cloud Developer
We are seeking a skilled Informatica Cloud Developer to design, develop, and implement cloud -based data integration solutions using Informatica Intelligent Cloud Services (IICS). The ideal candidate will have strong expertise in cloud data integration, ETL pipelines, and experience with platforms such as Snowflake, AWS, Azure, Salesforce, or other cloud ecosystems.
Requirements
Design, build, and maintain robust data pipelines using Informatica Cloud (IICS).
Develop ETL/ELT workflows for data extraction, transformation, and loading from various sources to cloud targets.
Integrate data across cloud applications (e.g., Salesforce, Workday) and on -premise systems.
Perform data profiling, quality checks, and implement data validation rules.
Collaborate with data architects, business analysts, and other stakeholders to understand data requirements and translate them into technical solutions.
Optimize data workflows for performance, scalability, and reliability.
Monitor data jobs and troubleshoot errors or performance issues.
Maintain detailed technical documentation for data pipelines and processes.
Implement best practices for data governance, security, and compliance.
Required Qualifications:
Bachelor's degree in Computer Science, Information Systems, or a related field.
3+ years of experience with Informatica Cloud (IICS) or Informatica PowerCenter.
Strong understanding of ETL/ELT concepts and data integration techniques.
Hands -on experience with cloud data platforms such as Snowflake, Redshift, Azure Synapse, or Google BigQuery.
Experience with REST/SOAP APIs, JSON/XML, and data ingestion from flat files, databases, and cloud apps.
Proficiency in SQL and performance tuning.
Familiarity with cloud platforms such as AWS, Azure, or GCP
$76k-100k yearly est. 60d+ ago
Software Developer (Data Engineer).
Eureka Infotech, Inc.
Applications developer job in Hicksville, NY
Software Developer (Data Engineer). Multiple Openings. Multiple Openings. Work in project migration from on- prem SSIS, SQL Server to Azure cloud. Develop complex database objects, stored procedures, functions, packages and triggers using SQL and PL/SQL. Write and test applications using Java. Test and debug issues. Work with Java, Javascript, Unix. Work on data movement from legacy Hive systems to ADLS using ADF pipelines. Create Synapse tables and develop configurations for the data movement according to the cloud data types. Participate in Data Migration using Spark SQL, Azure Blob Storage, and Azure Data Factory, Azure Synapse, SSIS. Work on historical data migration (HDM) from legacy systems to Azure Data Lake (Curated Zone) and Synapse using Azure Data Factory (ADF V2). Troubleshooting performance issues and implement partitioning and replace where functionality to avoid a table full load. Work on migrating the custom view scripts from SQL server to Synapse CZ. Create automated script using python for converting the view definitions compatible to cloud database and schema names. Creating, debugging, scheduling and monitoring jobs. Interact with SMEs, BSA, Technical lead and cross functional teams to gather requirements and discuss the approach for implementation of ETL logic for complex packages. Work in analysis, debugging and apply fixes to the defects in prod once the ETL jobs are made active. Work with Azure (ADLS Gen2, Azure Synapse, Azure Data Factory), Databricks , Python, Pyspark, Spark SQL, Git, SSIS, SSMS, DataDog, BitBucket. 40 hrs/wk. Must have Master's degree or equivalent in Computer Science, Electronics Engineering, Software Systems, or a related field (will accept a Bachelor's degree plus 5 years of progressive post baccalaureate experience in lieu of a Master's). Must have 2 years experience (or 2 years experience as Lead Technology, Lead Designer, Software Engineer, or related occupation). Must have 2 years experience developing complex database objects, stored procedures, functions, packages and triggers using SQL and PL/SQL; Writing and testing applications using Java; Testing and debugging issues; Working with Java, Javascript, Unix. Must be willing to travel/relocate to unanticipated locations throughout the US on short notice for extended periods of time. Telecommuting permitted.
Date Posted :
11/07/2025
* Email Resume To :
Eureka InfoTech, Inc.
H.R. Manager
9047 Executive Park Drive, Suite 115, Knoxville, TN 37923.
* Email :
$79k-104k yearly est. 60d+ ago
iOS Software Developer
Kliger Weiss Infosystems
Applications developer job in Greenvale, NY
KWI is looking for a smart, curious, hard-working, and creative iOS Developer to join our mobile applicationdevelopment 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
Senior React Frontend Developer / Lead Developer
Treehouse Strategy and Communications
Applications developer job in White Plains, NY
Treehouse Strategy is a management consulting company that specializes in helping language companies around the world grow and get to the next level. We work with language companies on sales strategies, marketing plans, marketing initiatives execution (rebranding strategy, website redesign, social media management, SEO, etc.), technology advisory, and merger & acquisition advisory and brokerage. We have clients in Greece, France, UK, Argentina, Spain, the US, and Taiwan.
Job Description
We are looking for a strong Senior Front End Engineer who has strong experience with React. You will be a key member of our small frontend development team making important technical decisions. If you love to code, like to build APIs, and enjoy working on unique challenges within a collaborative team of developers to build meaningful products, then please apply.
If you have experience with Scrum and can lead a small group of developers, that is a HUGE bonus.
If you are a ‘uber developer', you will move to the front of the line. Essentially, ‘uber developer' is a jack of all trades who can do a little bit of everything. In addition to being a developer, this person is also a software architect and can help with some high level software design decisions. We also need the uber developer to do code review, provide some technical guidance to the junior developers, to help do some mentoring, support, and maybe a bit of training.
Frameworks and Languages
• JavaScript
• React
• Redux
• Node
• Work with design and other teams to develop new customer-facing features and maintain existing ones.
• Create libraries, components and tools to ensure maximum performance with a top-notch user experience.
• Improve development experience to delight your teammates.
• Think like a product owner: what will delight users? What are the acceptable risks?
• Help colleagues review and test code
• What you will do:
• o Build and maintain frontend architecture
• o Collaborate with backend engineering, product, and design teams to write, test, and deploy code
• o Create new and innovative features for our users
• o Optimize pages for maximum speed
• o Solve problems creatively and efficiently
• Steer architectural discussions and build consensus among team members
• Help drive best practices, collaboration, and process improvements
• Diagnose and fix bugs and performance bottlenecks
• Maintain code and write automated tests to ensure the product is of the highest quality
• Mentor and coach fellow teammates
What You'll Need
• Significant production React or React Native experience on a medium to large scale application
• Demonstrated experience mentoring other engineers and setting team best practices
• Ability to write clean and well-tested TypeScript code
• Passion for doing the right things, collaborating, and team building
• Excellent verbal and written communication skills
Additional Information
Are you able to work the hours of Mon-Fri, 9 AM to 6 PM, Eastern Standard Time?
Are you able and willing to work outside of traditional local hours, if need be?
What is your level of English proficiency? What is your level of English proficiency in the CEFR scale or equivalent?
$125k-182k yearly est. 1d ago
Software Developer 830068
Capstone Search Advisors
Applications 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 Web Developer
Simpleciti Companies
Applications developer job in Garden City, NY
We are looking for a full stack web developer to build and ship production software with strong technical judgment and high UX quality. This role spans frontend, backend, and deployment, with an emphasis on modern web development while maintaining and extending existing Django systems. The role requires high autonomy and the ability to deliver usable, polished experiences without heavy design input.
Core Responsibilities
Build and ship full-stack web applications
Design and implement strong user experiences with minimal designer input
Build and maintain backend logic and APIs, including Django services
Integrate frontend applications with Django-based backends
Own deployment and production operation
Maintain performance, reliability, and code quality across the stack
Use AI-assisted IDEs to increase development speed and effectiveness
Requirements
Backend
Django, JavaScript, and Python in production environments
API design and backend system maintenance
Product & Execution
Ability to work independently from problem definition to production
Strong UX judgment without reliance on detailed designs
Development Environment
Cursor, Claude Code, or Codex preferred
Bonus Experience
TypeScript
Next.js
React
Tailwind CSS
Vercel and/or Cloudflare
shadcn/ui
Bun
$65k-87k yearly est. Auto-Apply 60d+ ago
Full Stack Web Developer
Simpleciti
Applications developer job in Garden City, NY
Job Description
We are looking for a full stack web developer to build and ship production software with strong technical judgment and high UX quality. This role spans frontend, backend, and deployment, with an emphasis on modern web development while maintaining and extending existing Django systems. The role requires high autonomy and the ability to deliver usable, polished experiences without heavy design input.
Core Responsibilities
Build and ship full-stack web applications
Design and implement strong user experiences with minimal designer input
Build and maintain backend logic and APIs, including Django services
Integrate frontend applications with Django-based backends
Own deployment and production operation
Maintain performance, reliability, and code quality across the stack
Use AI-assisted IDEs to increase development speed and effectiveness
Requirements
Backend
Django, JavaScript, and Python in production environments
API design and backend system maintenance
Product & Execution
Ability to work independently from problem definition to production
Strong UX judgment without reliance on detailed designs
Development Environment
Cursor, Claude Code, or Codex preferred
Bonus Experience
TypeScript
Next.js
React
Tailwind CSS
Vercel and/or Cloudflare
shadcn/ui
Bun
$65k-87k yearly est. 18d ago
Software Engineer III - VxWorks
North Atlantic Industries, Inc. 4.1
Applications developer job in Bohemia, NY
North Atlantic Industries is a leading provider of embedded electronic solutions, specializing in rugged embedded computing, power supplies and motion simulation and measurement technologies. Our products and services are used by the military, aerospace, and industrial markets, helping to advance technology and protect the free world.
NAI was proud to be recognized as a Top Workplace on Long Island by Newsday! Our culture is very collaborative. We have team building events, company picnics, special event day and employee game room. Please visit our website at ******************** to see more about what makes us a unique place to work.
Summary: (VxWorks Project)
Software Engineer III is responsible for assisting the development team with all aspects of software design and coding that align with the overall goals of our business. The duties of the Software Engineer III include attending design meetings. Depending on the software development assignments, this individual may be involved in various projects, including but not limited to:
* Development of Software Support Kit (SSK) packages.
* Design and development of GUI-based QT sample programs and GUI-based Windows test programs.
* Design and development of embedded software applications.
* Kernel and driver development for Board Support Packages (BSPs), including tasks such as creating drivers from datasheets, porting between Linux kernel versions or distributions (e.g., Yocto or Buildroot), and contributing to BSPs for VxWorks 7, HVP, or VxWorks 653.
Requirements
* Assisting the leads with all aspects of software design and coding
* Assisting with the designing, coding, and debugging of software
* Attending and contributing to company development meetings
* Participating and leading code reviews to ensure adherence to coding standards and best practices
* Working on bug fixes and finding solutions in a timely and efficient manner
* Expanding knowledge of emerging software technologies and apply them to current projects
* Assisting with generation and review of product and design documentation as needed
* Mentor entry-level software engineers
* Candidates must be a U.S. Person, defined as either a U.S. citizen or a lawful permanent resident (Green Card holder), and must be able to provide appropriate documentation upon hire to verify this status. Please note that some positions involve sensitive customer contracts and require U.S. citizenship as a condition of employment.
Qualifications and Education Requirements:
* BS in Computer Science or Electrical Engineering preferred and a minimum of 4 years of engineering and/or software programming experience
* Robust Knowledge of coding languages like C, C++, C#, and/or Java
* Knowledge of basic design principles such as Object-Oriented design and programming
* Familiar with various operating systems (Windows, Linux, PetaLinux, VxWorks, Deos, etc.)
* Ability to work with hardware to develop and debug software which may include using tools like an oscilloscope, multi-meter, logic analyzer and JTAG probe.
Preferred Skills and Abilities
* Strong oral and written communication skills to collaborate with other staff
* Strong analytical and problem-solving skills
* Self-motivated, and possess a high degree of curiosity and desire to learn new things
* Good organizational skills and be able to multi-task within a fast-paced environment
North Atlantic Industries offers comprehensive and competitive packages including:Benefits
* Medical, Dental, and Vision Insurance
* Company-provided Life and AD&D Insurance
* Voluntary Supplemental Life Insurance
* Long-term Disability Insurance
* Flexible Spending Accounts (FSA)
* Employee Assistance Program (EAP)
* 401(K) with company matching contributions
* Vacation, holidays, sick
* Employee tuition reimbursement
* Annual bonus eligibility
* Opportunities for learning and career development
Work Schedule and Environment
* Monday to Friday, Day Shift
* Discretionary 9/80 Schedule
* Business casual dress code
North Atlantic Industries (NAI) is proud to be an Equal Opportunity Employer and is committed to providing equal employment opportunity for all persons in all facets of employment. All qualified applicants will receive consideration for employment without regard to any legally protected status. If you are an individual with a disability or a disabled veteran and require a reasonable accommodation in applying for any posted position, please contact Human Resources at ************ or by email at ***********.
As a federal government contractor, in accordance with applicable laws, regulations, and Executive Orders, North Atlantic Industries (NAI) is required to develop annual Affirmative Action Plans for Protected Veterans and Individuals with Disabilities. Any employees or applicants who wish to review the Affirmative Action Plan for Protected Veterans and Individuals with Disabilities can contact us by sending an email to *********** or by calling ************.
Salary Description
$90,000 - $115,000 per year
$90k-115k yearly 5d ago
Web Application Developer
Opexpert
Applications 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. 1d ago
Software Developer- C# WPF
Flextrade 3.8
Applications developer job in Great Neck, NY
Systems:
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies.
At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having Fun truly makes FlexTrade a wonderful place to work.
JOB SUMMARY:
FlexTrade is looking for a Front-End-C# WPF, MVVM developer. We design, develop and maintain the most powerful trading tools on the market. Our target users are institutional traders in all asset classes and their front-end experience is critical to their market access.
Responsibilities:
Work collaboratively on multiple teams to develop concepts, prototypes and front-end production code.
Produce high quality, production-ready code working with other team members as a C# developer.
Understand and use existing styles and design patterns as well as develop new, extensible controls including maintaining multiple Style Dictionaries and themes.
Design and develop new components using current best practices blending code and design.
Create interactive prototypes to proof and test new interactions, visuals, and animations.
Iterate on prototype and product quality by testing for and fixing issues.
Minimum 2-4 years building software with C# and .Net Framework.
Strong experience in C#, object-oriented programming.
Must have hands-on experience with windows applicationdevelopment technologies including WPF, XAML and MVVM.
Knowledge and experience in developing multi-threaded applications.
Skilled with using Microsoft Expression Blend.
Must be able to provide visual and code examples of user interface using WPF.
Git, CVS or other version control system exposure.
Agile development methods.
Does this sound like you? We would love to hear from you. Please use the link on this page to apply, and we will get back to you as soon as we are able. For more information visit
********************
or follow us on twitter and LinkedIn for the latest updates.
**FlexTrade Systems, Inc. does not accept unsolicited resumes from search firm recruiters. Fees will not be paid in the event a candidate submitted by a recruiter without an authorized agreement for a particular SOW (Statement of Work) in place is hired: such resumes are deemed the sole property of FlexTrade Systems, Inc.**
**FlexTrade Systems, Inc. is an equal opportunity employer and makes employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or any other status protected by law.**
$80k-100k yearly est. 60d+ ago
Java UI Application Developer
Buildstaff
Applications developer job in East Patchogue, NY
BuildStaff Inc. provides rewarding career opportunities for Consultants and enables our Clients to become more agile and competitive through the innovative use of technology, people and process. Founded in 2003 and headquartered in Fremont, CA BuildStaff supports our Client partners around the world, including the United States, Canada, and India* through a combination of local offices and global delivery.
Job Description:
· 5+ Yrs. of experience in
Core Java & Web Technologies
with extensive knowledge of
XML/XSLT
.
· Experience with
MySQL
preferred and knowledge of
MongoDB
is a nice to have.
· Experience with
Rest services and web-development
.
· Financial services and
content management domain
experience preferred
Additional Information
All your information will be kept confidential according to EEO guidelines.
$85k-112k yearly est. 1d ago
Web Developer
Connexio
Applications developer job in North Hempstead, NY
We are looking for an outstanding Web Developer to be responsible for the coding, innovative design and layout of our website.
Web developer responsibilities include building our website from concept all the way to completion from the bottom up, fashioning everything from the home page to site layout and function.
Responsibilities
Write well designed, testable, efficient code by using best software development practices
Create a website layout/user interface by using standard HTML/CSS practices
Integrate data from various back-end services and databases
Gather and refine specifications and requirements based on technical needs
Create and maintain software documentation
Be responsible for maintaining, expanding, and scaling our site
Stay plugged into emerging technologies/industry trends and apply them into operations and activities
Cooperate with web designers to match visual design intent
Requirements
Proven working experience in web programming
Top-notch programming skills and in-depth knowledge of modern HTML/CSS
Familiarity with at least one of the following programming languages: PHP, ASP.NET, Javascript or Ruby on Rails
A solid understanding of how web applications work including security, session management, and best development practices
Adequate knowledge of relational database systems, Object Oriented Programming and web applicationdevelopment
Hands-on experience with network diagnostics, network analytics tools
Basic knowledge of Search Engine Optimization process
Aggressive problem diagnosis and creative problem-solving skills
Strong organizational skills to juggle multiple tasks within the constraints of timelines and budgets with business acumen
Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques.
BS in computer science or a related field
$65k-87k yearly est. 60d+ ago
Software Developer
Eureka Infotech, Inc.
Applications developer job in Hicksville, NY
Software Developer. Multiple Openings.
Gather requirements and work with design, analysis, modeling, code development, testing and production rollout. Support production systems and supply immediate investigation and resolution of software problems. Design and support environments in DEV, DIT. Ensure the architectural design is in compliance with the IT methodologies and client requirements. Coordinate with DBA, Development and Management teams to ensure the Database and development work is going along with the code. Deploy applications into Continuous integration environments like Jenkins to integrate and deploy code on CI environments for development testing. Create and execute manual test cases/scenarios, performs tests including functional ,integration, and regression performance. Design, build, develop, and execute manual/automated test scripts. Write unit tests using frameworks TestNG & JUnit and, used Mockito to mock objects as part of testing. Work with QA for testing and resolving defects in different level of application cycle such as DEV, QA, and PROD. Work with JAVA, design patterns-Singleton, Factory, DAO, DTO prototype, Composite View, NodeJS, typescript, angular CLI, SQL, JIRA, GitHub, GitLab, Maven, Ant, Jenkins.40 hrs/wk. Must have Bachelor's degree or equivalent in Computer Science, Electronics Engineering, or a related field. Must have 1 year experience (or 1 year experience as in a related occupation). Must have 1 year experience gathering requirements and with analysis, design, modeling, testing and development; working with design patterns-Singleton, Factory, DAO, DTO prototype, Composite View, NodeJS, Java, typescript, angular CLI. Must be willing to travel/relocate to unanticipated locations throughout the US on short notice for extended periods of time. Email resume to
$79k-104k yearly est. 60d+ ago
Web Application Developer
Opexpert
Applications 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. 60d+ ago
Software Engineer II
North Atlantic Industries, Inc. 4.1
Applications developer job in Bohemia, NY
North Atlantic Industries is a leading provider of embedded electronic solutions, specializing in rugged embedded computing, power supplies and motion simulation and measurement technologies. Our products and services are used by the military, aerospace, and industrial markets, helping to advance technology and protect the free world.
NAI is proud to be recognized as a Top Workplace on Long Island! Our culture is very collaborative. We have team building events, company picnics, special event day and employee game room. Please visit our website at ******************** to see more about what makes us a unique place to work.
Summary:
Software Engineer II is responsible for assisting the development team with all aspects of software design and coding that align with the overall goals of our business. The duties of the Software Engineer II include attending design meetings, and depending on the software development assignments, this individual may be supporting the design and development of the Software Support Kit (SSK) package, supporting the design and development of the GUI-based QT sample program and GUI-based Windows test programs, or programs, or supporting the design and development of embedded software.
Requirements
* Assisting the leads with all aspects of software design and coding.
* Assisting with the designing, coding, and debugging of software
* Attending and contributing to company development meetings.
* Participating in code reviews to ensure adherence to coding standards and best practices.
* Working on bug fixes and finding solutions in a timely and efficient manner
* Expanding knowledge of emerging software technologies and apply them to current projects.
* Mentoring software interns
* Candidates must be a U.S. Person, defined as either a U.S. citizen or a lawful permanent resident (Green Card holder), and must be able to provide appropriate documentation upon hire to verify this status. Please note that some positions involve sensitive customer contracts and require U.S. citizenship as a condition of employment.
Qualifications and Educations Requirements:
* BS in Computer Science or Electrical Engineering preferred and a minimum of 2 years of engineering and/or software programming experience.
* Knowledge of coding languages like C, C++, C#, and/or Java
* Knowledge of basic design principles such as Object-Oriented design and programming
* Familiar with various operating systems (Windows, Linux, PetaLinux, VxWorks, Deos, etc).
* Ability to work with hardware to develop and debug software which may include using tools like an oscilloscope, multi-meter, logic analyzer and JTAG probe.
Preferred Skills and Abilities:
* Strong oral and written communication skills to collaborate with other staff
* Strong analytical and problem-solving skills
* Self-motivated, and possess a high degree of curiosity and desire to learn new things
* Good organizational skills
* Proficiency with Python
* Proficiency in unit testing, specifically unit testing in C (using tools like Unity, Cpputest, Google Test, Bullseye, etc.)
* Proficiency with C# and C# related tools: C# Forms, C# .NET
* Proficiency in building/running C code using compilers such as GCC, G++
* Proficiency with artificial intelligence and machine learning
North Atlantic Industries offer comprehensive and competitive packages including:
* Medical, Dental, and Vision Insurance
* Company-provided Life and AD&D Insurance
* Voluntary Supplemental Life Insurance
* Long-term Disability Insurance
* Flexible Spending Accounts (FSA)
* Employee Assistance Program (EAP)
* Tax-deferred 401K with company matching contributions.
* Vacation, holidays, sick
* Employee tuition reimbursement
* Business casual dress environment
* Schedule: M-F Day Shift
North Atlantic Industries (NAI) is proud to be an Affirmative Action / Equal Opportunity Employer and is committed to providing equal employment opportunities for all persons in all facets of employment. We encourage females, minorities, protected veterans, and individuals with disabilities to apply for any open position for which they feel they are qualified. We also maintain a drug-free workplace and perform pre-employment substance abuse testing. As a federal government contractor, in accordance with applicable laws, regulations, and Executive Orders, NAI is required to develop annual Affirmative Action Plans (AAPs). Any employees or applicants who wish to review the Affirmative Action Plan (AAP) for Protected Veterans and Individuals with Disabilities can contact us by sending an email to *********** or by calling Human Resources at ************. If you are a disabled individual or a disabled veteran and require a reasonable accommodation in applying for any posted position, please contact Human Resources at the number referenced above. EEO is the Law, applicants and employees of NAI are protected under Federal law from discrimination. Click here to learn more about your rights.
Salary Description
$78,000 - $105,000
$78k-105k yearly 11d ago
Software Engineer - Early Career (USA)
Trexquant Investment 4.0
Applications developer job in Stamford, CT
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.
Applications are now open for our NYC office, opening in September 2026.
The base salary range is $130,000 - $175,000 depending on the candidate's educational and professional background. Base salary is one component of Trexquant's total compensation, which may also include a discretionary, performance-based bonus.
Trexquant is an Equal Opportunity Employer.
$130k-175k yearly Auto-Apply 60d+ ago
Associate Software Developer (Python)
Flextrade Systems 3.8
Applications developer job in Great Neck, NY
FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a competitive edge. Our globally distributed engineering teams focus on adaptable technology and open architecture to develop highly sophisticated trading solutions that can automate and scale with your business strategies.
At FlexTrade, we hold our values close to heart, with pride and gratitude, as they guide us in everything that we do. We are dedicated to giving our clients a competitive edge, taking ownership of our responsibilities, being flexible to adapt to ever changing environment and technology, bringing integrity to ever interaction and we continue to improve, grow together and collaborate as one team. All of these while having fun truly makes FlexTrade a wonderful place to work.
The Team
You will be part of a small close-knit team of engineers that work in an Agile and collaborative fashion to build performant software that sits at the core of FlexTrade's business. Working in close collaboration with client-facing teams you will design and develop solutions for complex customer problems raised and assist teams in moving changes to production.
About You
You will be working on the FlexDATA product, which is responsible for managing and visualising historical and real time client data. The core parts of FlexDATA are a data ingress pipeline, database, API's and a web-app frontend. We are looking for someone who is passionate about data and self-motivated and take ownership of tasks from start to finish. This role will be a mixture of developing and maintaining features whilst also doing product support.
$80k-100k yearly est. 60d+ ago
Software Developer. Multiple Openings
Eureka Infotech, Inc.
Applications developer job in Hicksville, NY
Software Developer. Multiple Openings. Automate provisioning, installation, and infrastructure setup in AWS using Terraform. Develop Terraform scripts for provisioning and configuring AWS resources. Design Java web applications. Develop and configure software applications. Create and maintain database schemas. Design and implement continuous integration and delivery pipelines. Work with Spring Boot, UAT, CI/CD, Jenkins, Python, Groovy Scripts, Grafana, CloudWatch. Configure Jenkins pipelines to automate build, test, and deployment processes. Integrate pipelines with version control systems like GitLab. Design and implement end-to-end features, including user interfaces, server-side logic, and database interactions, utilizing Java frameworks such as Spring Boot and Hibernate. Optimize and implement database schemas and queries using SQL and NoSQL databases like MySQL, PostgreSQL, MongoDB, and Redis. Configure Hybris integrations to retrieve required backend data efficiently. Develop AEM components with dynamic dialogs using jQuery and JSP, improving content management system capabilities. Design resilient, secure, and high-performing platforms in the AWS public cloud, adhering to best practices. Drive the adoption of AWS services like EC2, S3, RDS, CloudFront, EKS, ECS, and CloudWatch to enhance reliability and performance. Work with Java, Python, SQL, Node.js, Go, and Scala. Leverage open-source RDBMS, NoSQL databases, Docker, and Kubernetes for container orchestration. 40 hrs/wk. Must have Master's degree or equivalent in Computer Science, Electronics Engineering, IT, or a related field (will accept a Bachelor's degree plus 5 years of progressive post baccalaureate experience in lieu of a Master's). Must have 1 year experience (or 1 year experience as Software Engineer, Devops Engineer, or related occupation). Must have 1 year experience designing Java web applications; developing and configuring software applications; creating and maintaining database schemas; designing and implementing continuous integration and delivery pipelines; working with Spring Boot, UAT, CI/CD, Jenkins, Python, Groovy Scripts, Grafana, CloudWatch. Must be willing to travel/relocate to unanticipated locations throughout the US on short notice for extended periods of time. Telecommuting permitted.
Date Posted :
11/28/2025
* Email Resume To
FlexTrade Systems is a financial technology Software Company headquartered in Great Neck, New York. We are celebrating 26 years as industrial pioneer and a global leader in broker-neutral, trading platforms for equities, foreign exchange, options, futures, and fixed income. With 500+ employees across 10+ offices in North America, Europe and Asia, and a worldwide client base both from Buy Side and Sell Side business. It is an exciting time to join FlexTrade. Each line of business and region is at different growth phases. Across its functional teams, FlexTrade is taking bold steps to transform its business and approach to position itself for the next phase of growth. Why FlexTrade? Building great software requires great people. We thrive upon collaboration hail from all walks of life and speak dozens of languages, we are passionate about equality and integrity with a culture that give you the freedom to make an impact globally. Get to know more about our Products - *****************
JOB SUMMARY
OMS Implementation and Support Engineers are responsible for all technical activities associated with the deployment and ongoing support of the FlexTrade Order Management System for Sell Side clients. Support Engineers design, configure, test, troubleshoot and develop solutions to provide best of breed functionality to our clients. Support Engineers work closely with internal and external resources throughout the Sell Side OMS vertical, including Product and Project Managers, Business Analysts, Quality Assurance Testers, Developers and Trading Desk personnel.
MAIN RESPONSIBILITIES
· Configure systems and workflows for new client deployments and upgrades.
· Ensure the availability of systems and workflows for existing clients.
· Troubleshoot and mitigate production system issues and outages.
· Contribute technical expertise when working with internal and external resources to deliver value added functionality or to resolve production issues.
SKILLS REQUIRED:
· Bachelor's degree in computer science
· 3 to 5 years of technical work experience in a client implementation and/or support environment.
· Strong problem-solving skills
· Experience with UNIX based systems.
· Experience with Database systems (SQL Server, Sybase)
· Experience with scripting (Python, Perl/Shell)
· Good understanding of the Software Development Life Cycle
· Solid understanding of Broker Dealer workflows
SKILLS DESIRED:
· Good programming skills (C++, JAVA)
· Strong work ethic
· Strong organizational skills
· Ability to work in a team environment
· Good oral and written communication skills
*
*FlexTrade Systems, Inc. does not accept unsolicited resumes from search firm recruiters. Fees will not be paid in the event a candidate submitted by a recruiter without an authorized agreement for a particular SOW (Statement of Work) in place is hired: such resumes are deemed the sole property of FlexTrade Systems, Inc.**
**FlexTrade Systems, Inc. is an equal opportunity employer and makes employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or any other status protected by law.**
How much does an applications developer earn in Central Islip, NY?
The average applications developer in Central Islip, NY earns between $68,000 and $122,000 annually. This compares to the national average applications developer range of $67,000 to $118,000.
Average applications developer salary in Central Islip, NY