> Markdown version of [/jobs/ext/3904909-senior-java-kotlin-software-engineer-london](https://www.wearedevelopers.com/jobs/ext/3904909-senior-java-kotlin-software-engineer-london). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Java/Kotlin Software Engineer - London - **Company:** Zopa Ltd - **Location:** London, UK - **Experience:** Expert - **Salary:** £72,427 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Behavior-Driven Development, Distributed Systems, PostgreSQL, Software Systems, Test-Driven Development (TDD), Kotlin, AWS Aurora, Kubernetes, Apache Kafka, Docker - **Published:** October 25, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5356386544 ## About the Role * You feel comfortable in a fast-moving environment and are ambitious about the speed and quality of your code. We ship our code multiple times a week with the impact measured in the result for the customer, not lines of code * An advocate of test-driven development or, even better, behaviour-driven development. A strong commitment to quality is essential * You've worked on large scale distributed software systems that have proven scalability and complex topologies * Enjoy talking to key stakeholders and understand and show passion for the business objectives of the company * You are comfortable with a fair bit of uncertainty, fast change, and love solving hard problems collaboratively * You are a team player who thrives working in an honest and friendly working atmosphere. We have a flat hierarchy and give you the opportunity to make a real impact Your toolkit: * You'll work with Kotlin, Kafka, Kubernetes, Docker, AWS Aurora Postgres, and other modern technologies. If you haven't worked with all of these, we value skilled engineers with a willingness to learn. * A product-focused engineering mindset * Experience building distributed systems at scale * Test-driven development practices * Comfort operating in uncertainty and rapid change * Collaborative problem-solving skills Our engineering culture: * Customer impact over unnecessary complexity * Team success over individual heroics * Operational ownership, not just feature delivery * Continuous improvement through honest feedback Added bonus: * Experience with fintech or banking is a plus, but we value problem-solvers from all backgrounds