Principal software engineer jobs in Menifee, CA

Join the Pacsun Community Co-created in Los Angeles, Pacsun inspires the next generation of youth, building community at the intersection of fashion, music, art and sport. Pacsun is a leading lifestyle brand offering an exclusive collection of the most relevant brands and styles such as adidas, Brandy Melville, Essentials Fear of God, our own brands, and many more. Our Pacsun community believes in and understands the importance of using our voice, platform, and resources to inspire and bring about positive development. Through our PacCares program, we are committed to our responsibility in using our platform to drive change and take action on the issues important to our community. Join the Pacsun Community. Learn more here: LinkedIn- Our Community About the Job: Pacsun's IT eCommerce team uses AI and innovative technologies to enhance customer experience and improve operational efficiency. As a key member of the team, the Senior eCommerce Developer contributes the architecture, development and optimization of the company's digital commerce experiences. This role is responsible for both back‑end and front-end development on Salesforce Commerce Cloud (SFCC), ensuring high‑performance, secure and accessible storefronts, with robust system integration in the eCommerce ecosystem. The Senior eCommerce Developer will lead end‑to‑end delivery of new features, mentor junior developers and off-shore team, and collaborate closely with UX, product, QA and business teams to create compelling online experiences that drive revenue and customer loyalty. This role will work on the full stack of Pacsun's Salesforce Commerce Cloud, mobile app, AI initiatives and system integrations, supporting Commerce, Loyalty, CRM, OMS, and other eCommerce platforms. A day in the life, what you'll be doing: Back‑End Development & Integration Design, build and maintain SFCC server‑side components, including controllers, pipelines, cartridges and custom business logic. Develop and manage robust APIs that connect SFCC with tax engines, payment processors, fraud management services and the order management system. Ensure reliable data synchronization between SFCC and external platforms such as CRM, Loyalty, OMS, ERP and analytics systems. Optimize database models, caching strategies and performance tuning to support high transaction volumes and peak traffic periods. Checkout & Transaction Optimization Own the end‑to‑end checkout experience, ensuring seamless, secure and performant workflows from cart to order confirmation. Integrate payment gateways and fraud protections to deliver accurate pricing and effortless transactions. Collaborate with UX and product teams to identify friction points in the checkout process and implement improvements that boost conversion and customer satisfaction. Tax, Shipping & OMS Integration Implement and maintain integrations with third‑party tax services to handle complex jurisdictional tax rules. Connect SFCC to shipping providers and fulfillment platforms to provide real‑time shipping options and tracking. Build and support integrations with the order management system to ensure accurate order routing, inventory updates and status synchronization. AI & Innovation Support Partner with data science and innovation teams to embed AI‑driven personalization, recommendation and search solutions into the platform. Develop integration points for machine‑learning models and real‑time personalization engines, ensuring data security and compliance. Prototype and implement new technologies that enhance the customer experience and streamline operations. Technical Leadership & Collaboration Lead code reviews, define backend architecture standards and mentor less experienced developers on integration patterns and best practices. Participate in IT management and technical teams to develop and deploy processes to ensure rapid, reliable releases. Work closely with product, UX, QA and DevOps teams to define requirements, plan sprints and deliver high‑quality software on schedule. What it takes to Join: 8+ years of experience in web development and at least 5 years focused on Salesforce Commerce Cloud and SFRA. Deep knowledge of modern front‑end technologies (HTML5, CSS3/SCSS, JavaScript, React or similar frameworks) and back‑end development (Node.js, Java or equivalent). Hands‑on experience with SFCC OCAPI/SCAPI, cartridge development, API integrations and Business Manager configurations. Proven track record integrating third‑party services (payments, tax, shipping, CRM, loyalty, analytics) and implementing secure, scalable solutions. Familiarity with Agile methodologies, version control (Git) and CI/CD pipelines. Strong understanding of web performance optimization, SEO and accessibility standards. Ability to lead discussions, mentor teammates and collaborate with technical teams. Bachelor's degree in Computer Science, Information Systems or related field; Salesforce B2C Commerce Developer certification is preferred. Salesforce Commerce Cloud SFRA certified developer is preferred. Proven ability to excel in fast-growing, dynamic business environments with competing priorities, with a positive, solution-oriented mindset. Excellent analytical and problem-solving skills. Salary Range: $149,000 - $159,000 Pac Perks: Dog friendly office environment On-site Cafe On-site Gym $1,000 referral incentive program Generous associate discount of 30-50% off merchandise online and in-stores Competitive long term and short-term incentive program Immediate 100% vested 401K contributions and employer match Calm Premium access for all employees Employee perks throughout the year Physical Requirements: The physical demands described here are representative of those that are required by an associate to successfully perform the essential functions of this job. While performing the duties of this job, the associate is regularly required to talk or hear. The associate is frequently required to sit; stand; walk; use hands to finger, handle or feel; as well as reach with hands and arms. Specific vision abilities required by this job include close vision, distance vision, depth perception and ability to adjust focus. Ability to work in open environment with fluctuating temperatures and standard lighting. Ability to work on computer and mobile phone for multiple hours; with frequent interruptions. Required to travel in elevator or stairwells to attend meetings and engage with associates on multiple floors throughout building. Hotel, Airplane, and Car Travel may be required. Position Type/Expected Hours of Work: This is a full-time position. As a National Retailer, occasional evening and/or weekend work may be required during periods of high volume. This role operates in a professional office environment and routinely uses standard office equipment. Other Considerations: Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the associate for this job. Duties, responsibilities and activities may change at any time with or without notice. Reasonable accommodations may be made to qualified individuals with disabilities to enable them to perform the essential functions of the role. Equal Opportunity Employer This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.