Software Engineer II

Bigcommerce; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Commerce is seeking a Senior Software Engineer to own complex problems from discovery to production. You will work across services, APIs, and product experiences, ensuring reliable, scalable systems with strong monitoring and incident response.

The role requires 5+ years of backend experience, proficiency in Java/Scala/Kotlin/Go, and a solid foundation in SQL. Cloud exposure (AWS/GCP) and event systems are preferred. They value clear trade-offs and proactive ownership.

Qualifications

• 5+ years of software engineering experience with strong backend skills across services, APIs, and data flows.
• Experience owning ambiguous technical work and solving problems across multiple system layers.
• Solid SQL and data-driven product decisions; ability to design scalable services.

Responsibilities

• 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 with trade-offs.
• Own production behavior: monitoring, alerting, logging, debugging, and runbooks.
• Collaborate 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 fail.

Skills

Java

Scala

Kotlin

Go

SQL

Education

Bachelor's degree in CS/EE/SW/CE/MIS

Tools

Kafka

RabbitMQ

Pub/Sub

Redis

AWS

GCP

Job description

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. 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.

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.

What You'll Do

• 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.

Who You Are

• You have 5+ years of software engineering experience, with strong backend skills in Java, Scala, Kotlin, Go, or a similar language
• Education: Preferred minimum Bachelor's degree in CS, EE, SW, CE, MIS; or equivalent experience
• You have experience owning ambiguous technical work and can solve problems across multiple layers of a system, from backend services to product-facing frontend workflows when needed
• You're comfortable with distributed systems, event-driven flows, caching, retries, rate limits, and the many ways production systems fail
• You have experience building APIs, services, and integrations, backed by solid SQL and data-driven product decisions
• You've worked with a cloud platform (GCP, AWS, or similar) and event systems like Kafka, RabbitMQ, or Pub/Sub
• You write automated tests, review code thoughtfully, and use logs, metrics, dashboards, and tracing to understand how your systems actually behave in production
• You're a strong production debugger who stays calm and clear during incidents, and you can explain trade-offs to both engineers and non-engineers
• You have a bias toward simple, reliable solutions that other engineers can operate without you in the room
• You take ownership of outcomes, not just tickets — you ask what problem you're solving before jumping to implementation, validate risky assumptions early, and elevate when risk or scope is unclear
• You don't take shortcuts around process, security, or production safety
• Nice to have: React/TypeScript or similar frontend experience, merchant- or customer-facing product work, third-party integrations (OAuth, account linking, external APIs), Redis/caching/queues at scale, or experience with analytics and event data products

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Inclusion and Belonging

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/