Software Engineer II - Backend (Ruby) in London

At Commerce, the Commerce Payment integrations team is looking for a Software Engineer who wants to make an impact by powering innovators, creative thinkers, entrepreneurs, and business owners around the world.

What the Team Owns

• Designs and maintains payment integrations functionality and APIs, including cart-to-order flows and payments processing.
• Ensures high availability, performance, and correctness for checkout and payments related services, given their direct impact on merchant revenue.
• Partners closely with Product to evolve checkout and payments capabilities while balancing quality, security (PCI), and speed of delivery.
• Owns incident management and on-call responsibilities for checkout services due to their critical nature.

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 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.
• 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.
• Mentor other engineers in the current domain.
• 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

• 3+ years of professional backend development experience, with a strong focus on Ruby on Rails.
• Solid understanding of building and operating production-grade systems (e.g., you know your way around logs, traces, metrics, feature flags, and can debug live traffic issues).
• Familiarity with observability tooling (e.g., Prometheus, Grafana, Sentry, and Lightstep).
• A good understanding of Domain Driven Design experience integrating with third-party APIs and services, particularly those with nuanced state transitions (like payment flows).
• Experience with principles of continuous integration and designing, implementing, and taking ownership of various tasks across the development cycle.
• Experience in developing high-performance, scalable, and available web services and applications.
• Preferred Minimum Bachelor’s degree in CS, EE, SW, CE, MIS; or equivalent experience or completed a comprehensive software engineering boot camp.
• Experience with PHP and Scala is preferred.

Inclusion and Belonging

We are an equal opportunity employer and the inclusive atmosphere we build together will make room for every person to contribute, grow and thrive. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the interview process, to perform essential job functions and to receive other benefits and privileges of employment. If you need an accommodation in order to interview at Commerce, please let us know during any of your interactions with our recruiting team.