Senior Software Engineer - Ruby

Welcome to the Agentic Commerce Era At Commerce, our mission is to empower businesses to innovate, grow, and thrive with our open, AI-driven commerce ecosystem. As the parent company of BigCommerce , Feedonomics , and Makeswift , we connect the tools and systems that power growth, enabling businesses to unlock the full potential of their data, deliver seamless and personalized experiences across every channel, and adapt swiftly to an ever-changing market. Simply said, we help businesses confidently solve complex commerce challenges so they can build smarter, adapt faster, and grow on their own terms. If you want to be part of a team of bold builders, sharp thinkers, and technical trailblazers, working together to shape the future of commerce, this is the place for you. BigCommerce, part of the Commerce brand family, helps merchants increase sales at every stage of their growth. From small startups to mid-market businesses and large enterprises, we provide the leading e-commerce platform. Our customers can then concentrate on what's most important: growing their businesses. We enable our customers to build, innovate, and grow, collectively reshaping the e-commerce industry. Commerce is looking for a seasoned Senior Software Engineer - Ruby to join our Core Payment Engineering team.  This team is responsible for building the systems that handle mission-critical payment processing for merchants around the globe. You’ll work closely with product managers, engineers, and infrastructure teams to build scalable and secure backend services. This role is ideal for someone with a strong engineering foundation, excellent communication skills, and a passion for working on production-grade systems in a high-impact domain like ecommerce payments. The Core Payment Engineering team builds and maintains the foundational systems that power all payment flows on the BigCommerce platform. We focus on reliability, extensibility, and correctness to ensure that merchants can accept payments seamlessly and securely, no matter where they operate or who they sell to. Our work spans payment configuration, authorisation and refund flows, observability, correctness, and performance of critical services. We are trusted custodians of one of the most sensitive and business-critical parts of the platform, directly supporting revenue for merchants and smooth checkout experiences for millions of shoppers around the world. What You’ll Do: Design, implement, and maintain features in a Ruby on Rails service for the payments offering on the BigCommerce platform Ensure functionality is production-grade, with the appropriate test coverage on all layers, instrumentation in place, and documentation Troubleshoot production issues and contribute to post-incident reviews to improve reliability Produce bullet-proof code that is robust, efficient, and maintainable Work on challenging problems such as query optimization and performance optimization while adhering to security protocols Work closely with operations and infrastructure to improve the architecture while building and scaling back-end services Engage in technical discussion of new solutions and architectures Participate in code reviews to maintain and improve quality Mentor other engineers in the current domain Build beautiful, scalable products using modern tools Collaborate with our product and design teams to define feature specifications and timelines Build new features with a focus on testability and extensibility Engage in technical discussion of new solutions and architectures Review other engineer’s code to maintain and improve quality and security Support an open, positive, and energized culture Encourage innovation and foster an environment of continuous improvement Ensure that technical decisions support our goals of quality, performance, scalability, reliability, availability, and security Who You Are: 5 years of professional backend development experience, with a strong focus on ... (truncated, view full listing at source)