Principal Software Engineer

Senior/Principal Software Engineer - Kotlin £90,000-£150,000 basic salary Project at Tier One Investment Bank London - Hybrid working - flexible Are you a Senior/ Principal Engineer with commercial Kotlin experience who is ready to make an impact in one of the world’s leading financial institutions in the new year? We’re searching for a Senior/ Principal Kotlin focused Engineer to join a critical project at a Tier 1 Investment Bank, working on mission-critical systems that power global investment strategies. This is a greenfield project where you'll have a lot of autonomy and influence. Working for a developer-led software consultancy passionate about software craftsmanship and developer experience enables you to focus on the tech and not get bogged down in the politics. What you’ll do: Develop and maintain highly reliable backend systems using Kotlin. Collaborate closely with cross-functional engineering teams, delivering software that’s fast, scalable, and meets the demands of a global investment business. Contribute to the design of robust solutions, integrating with real-time trading and risk management systems Ensure code quality through best practices, TDD, and strong testing methodologies. What we’re looking for: Expertise in Kotlin and experience building high-performance backend systems. A solid background in distributed systems. Experience with cloud technologies Familiarity with microservices architecture, CI/CD pipelines, and Agile methodologies. A passion for writing clean, maintainable, and well-tested code. Ability to work in a fast-paced, high-stakes environment, solving complex problems that directly impact the business. What we offer: Exposure to a modern technology stack with Kotlin as the primary language A passionate team who care about their craft and software engineering best practices A flexible environment Solid salary, L&D budgets including global conferences, 10% pension, life insurance, health insurance, paid time off for family. If you're an experienced engineer with backend Kotlin experience looking for an exciting role in an interesting domain please apply now! kotlinroles kotlindeveloper TDD