Software Engineer II - Engineering Services (Full Stack)

BigCommerce, part of Commerce, is an open, AI-driven commerce ecosystem that helps businesses innovate, grow, and manage complex commerce challenges. The Software Engineer II will design, build, maintain, and support full-stack single-click applications for the BigCommerce App Marketplace, integrate platform APIs and services, and contribute to merchant data migration projects. The role also involves production support, code reviews, technical design, and collaboration with product and services teams.

Responsibilities:

• Collaborate with the team to design, build, and maintain single-click apps across the full stack - backend services in Node/TypeScript and PHP, and frontends in React
• Integrate deeply with BigCommerce platform APIs (REST and GraphQL), webhooks, and OAuth flows
• Write code that is performant, maintainable, clear, and concise, with appropriate test coverage
• Build new features with a focus on extensibility and quality - a single codebase serving many merchants raises the bar for both
• Support apps in production: monitor health, troubleshoot issues and resolve merchant-impacting bugs
• Contribute to data migration projects, from scripting and validation through cutover
• Participate in code reviews to maintain and improve quality
• Partner with Product Managers, solutions architects, and other services teams to translate merchant requirements into technical designs, occasionally joining client and partner conversations alongside Product Managers
• Move comfortably between projects and codebases, choosing the right tools and patterns for each job

Requirements:

• 3+ years of professional experience as a Software Engineer
• Solid understanding of programming principles and write code that others enjoy inheriting
• Hands-on experience with NetJavaScript/TypeScript (Node) and/or PHP on the backend, and React and Next.js on the frontend - depth in one with willingness to work across the stack
• Experience integrating with third-party APIs and services (REST, GraphQL, webhooks, OAuth)
• Think in multi-tenant terms: one app, thousands of stores, and the performance, data-isolation, and upgrade considerations that come with that
• Comfortable context-switching across concurrent projects and picking up unfamiliar codebases quickly
• Excellent interpersonal skills - able to collaborate and communicate efficiently in person, video calls, Slack or email, including explaining technical concepts to non-engineering stakeholders
• Driven to take action and enjoy owning work from inception to delivery
• Enjoy being part of a collaborative team focused on building products that delight customers and our partners
• Bachelor's degree in CS or equivalent experience; or completion of a comprehensive software engineering boot camp
• Experience with ecommerce platforms, BigCommerce APIs, or building apps for a marketplace/app-store distribution model