Principal Software Engineer - Kotlin

Principal Software Engineer - Kotlin
£130,000-£140,000 basic salary
Project at Tier One Investment Bank
Hybrid working - 2 days in office but flexible

Are you a Principal Engineer with commercial Kotlin experience who is ready to make an impact in one of the world’s leading financial institutions? We’re searching for a Principal Kotlin Developer to join a critical project at a Tier 1 Investment Bank, working on mission-critical systems that power global investment strategies. You'll join at Principal level and lead technically and help shape the technical direction of the project.

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. Some prior Scala experience would be great but not essential.
• A solid background in multithreading, concurrency, and 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

Apply now for a fast turnaround as this is a key project.

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