Sr Software Engineer - Digital

Five Below • Philadelphia, PA

84d

About The Position

The Engineering team, organized by product groups, is responsible for the architecture, design, development and operations of all systems and applications supporting Five Below's Retail footprint. Accordingly, we have Merchandising and Inventory Management, Planning and Allocation Accounts Payables and Corporate Finance, Stores and Omni, Logistics, BI and Data Platform, Ecommerce Engineering and Tools. Five below systems and applications supporting business functions are a combination of enterprise solutions and custom software built to create a seamless experience for our customers, driven by data assets and Infrastructure at its epicenter. Digital engineering organization is responsible for creating world class customer experience through the ecommerce website, mobile app and multiple marketplaces for the Five Below customers. We are seeking a seasoned Senior Full-Stack Developer to join our team and drive the design, development, and delivery of our digital commerce platform. You will work across frontend and backend systems, leveraging MACH architecture (Microservices, API-first, Cloud-native, Headless) to build scalable, performant, and reliable systems. The ideal candidate will have deep experience integrating commerce tools, optimizing front-end experiences, and building microservices on AWS using Spring Boot.

Requirements

• Strong experience (7-10+ years or equivalent senior level) with full-stack development, with significant hands-on experience on both frontend and backend.
• Strong experience with Spring Boot services on AWS; proven ability to design and build backend microservices.
• Proficiency in frontend frameworks (React / Next.js or similar) and deploying with Netlify (or equivalent static / headless / CDN setup).
• Solid experience in MACH / headless commerce architecture; experience integrating with Commercetools or similar.
• Hands-on experience with performance / load testing, observability, monitoring, and production troubleshooting.
• Depth in API design and versioning, service reliability, data persistence, caching, and error handling.
• Familiarity with CI/CD tooling, test environment setup, version control, deployment automation.
• Excellent code quality practices: tests, code reviews, maintainable architecture.
• Strong leadership / mentorship skills; ability to contribute to architectural decisions and own features end-to-end.
• Good communication skills; ability to articulate trade-offs, collaborate across teams.
• Retail / Ecommerce experience is a must.
• Highest level of personal integrity, and the ability to professionally manage confidential matters and exude the appropriate level of judgment and maturity.
• Exceptionally self-motivated and directed.
• Must be able to support on and offshore teams.

Responsibilities

• Architect, build, maintain, and deliver full-stack features: from UI/UX front-end through backend microservices.
• Design, document, version, and evolve APIs; ensure backward compatibility and smooth integration with the commerce platform.
• Optimize front-end performance (build times, bundle sizes), ensure SEO readiness, accessible, responsive / mobile user experience.
• Develop scalable backend services on AWS: data modeling, caching, scaling, fault tolerance, observability.
• Own and improve CI/CD pipelines, deploy processes, versioning, and test environments.
• Implement monitoring, logging, tracing, metrics, and alerting across the stack; perform performance / load testing; identify and resolve bottlenecks.
• Ensure code quality with unit, integration, end-to-end tests; maintain high test coverage; conduct code reviews.
• Identify and reduce technical debt; advocate for clean, maintainable, scalable architecture.
• Mentor junior / mid-level developers; lead design / architecture discussions; contribute to roadmap and strategic decisions.
• Collaborate closely with Product, UX, QA, DevOps and other stakeholders to deliver features meeting business goals.
• Maintain security best practices: secure APIs, data protection, secure integration, compliance as needed.

Benefits

• Health coverage
• Financial wellness support
• Personal wellness support

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Industry: General Merchandise Retailers
• Number of Employees: 5,001-10,000 employees