Senior Software Engineer

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. We believe in harnessing AI responsibly to unlock new possibilities, and we’re looking for individuals who use it intentionally to solve problems, accelerate outcomes, and expand what’s possible in their role. Our purpose is to 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 who shape the future of commerce, this is the place for you.

Location: London / UK (Hybrid)

Company: Commerce

Commerce is an open SaaS ecommerce platform that helps merchants build, run, and grow their businesses.

The Data Team builds systems that support merchant-facing products, integrations, analytics, reporting, and the infrastructure behind them.

We are looking for a Senior Software Engineer who can own complex problems from discovery through production.

This role is not narrowly frontend, backend, or data engineering. The right person can work across services, APIs, event flows, product experience, production debugging, and cross-team delivery.

They should be comfortable taking an unclear business or customer problem, breaking it down, making trade-offs clear, and shipping a reliable solution.

We need someone who raises the engineering bar without needing a lot of direction.

• Design and build reliable services, APIs, and product-facing workflows.
• Work across backend systems, UI surfaces, event processing, and third-party integrations.
• Turn unclear problems into concrete technical plans.
• Own production behavior, including monitoring, alerting, logging, debugging, and runbooks.
• Work with product, design, infrastructure, support, and other engineering teams.
• Improve quality through tests, code review, observability, and simpler designs.
• Use data and production evidence to validate decisions.
• Take ownership of incidents and production issues when systems do not behave as expected.

• Strong senior-level engineering judgment.
• Experience owning ambiguous technical work.
• Ability to solve problems across multiple layers of a system.
• Strong backend engineering experience with production services.
• Enough frontend experience to work on product-facing workflows when needed.
• Comfort with distributed systems, event-driven flows, caching, retries, rate limits, and failure modes.
• Strong production debugging skills.
• Ability to explain trade-offs clearly.
• Bias toward simple, reliable solutions.
• Good communication during incidents, reviews, and cross-team work.

• 5+ years of software engineering experience.
• Strong experience with Java, Scala, Kotlin, Go, or a similar backend language.
• Experience building APIs, services, and integrations.
• Experience with SQL and data-backed product behavior.
• Experience with GCP, AWS, or another cloud platform.
• Experience with Kafka, RabbitMQ, Pub/Sub, or similar event systems.
• Experience with logs, metrics, dashboards, alerts, and tracing.
• Experience writing automated tests and reviewing code.

• React / TypeScript or similar frontend experience.
• Experience with merchant-facing or customer-facing product workflows.
• Experience with third-party integrations, account linking, OAuth, or external APIs.
• Experience with Redis, caching, rate limiting, queues, or high-volume event processing.
• Experience with analytics, reporting, attribution, or event data products.

• Own the outcome, not only the ticket.
• Ask what problem we are solving before choosing the implementation.
• Prefer simple designs that other engineers can operate.
• Validate risky assumptions early.
• Use production data and customer impact to guide decisions.
• Escalate early when risk, ownership, or scope is unclear.
• Do not take shortcuts around process, security, or production safety.

A strong candidate can describe systems they owned, incidents they handled, trade-offs they made, and mistakes they learned from.

They should be able to explain how they approach unclear problems, reduce risk before production, and make systems easier for the team to operate.

They should not need a tech lead to turn every ambiguous problem into a detailed task list.

At Commerce, we believe that celebrating the unique histories, perspectives and abilities of every employee makes a difference for our company, our customers and our community. 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.

Learn more about the Commerce team, culture and benefits at https://www.commerce.com/careers/

Commerce, along with many other employers, has become the subject of fraudulent job offers to hopeful prospective job seekers.
Be advised:
Commerce does not offer jobs to individuals who do not go through our formal hiring process.
Commerce will never:

• require payment of recruitment fees from candidates;

• request personally identifiable information through unsanctioned websites or applications;

• attempt to solicit money from you as part of the hiring process or as part of an employment offer;

• solicit money to complete visa requirements as part of a job offer.

If you receive unsolicited offers of employment from Commerce, we urge you to be extremely cautious and avoid engaging or responding.