Kotlin Developer

Senior Software Engineer – KotlinJob Title

Senior Software Engineer – Kotlin

Location

London, United Kingdom (Hybrid)

Employment Type

Permanent / Full-Time

About the Role

We are looking for experienced Senior Kotlin Engineers to join a high-performing engineering team building a next-generation cloud-native platform within the Capital Markets domain. This platform supports critical front-office business processes and is used by global users operating in a fast-paced, real-time environment.

You will work closely with product, engineering, and platform teams to design, build, and support highly scalable backend services while contributing to a strong engineering culture focused on quality, collaboration, and continuous improvement.

Key Responsibilities

• Design, develop, and maintain backend services using Kotlin
• Build scalable, resilient, and high-performance cloud-native applications
• Collaborate with cross-functional teams to deliver business-critical features
• Participate in architecture discussions and technical design decisions
• Follow engineering best practices including automated testing, code reviews, and continuous integration
• Support production systems and contribute to platform reliability and operational excellence
• Drive continuous improvement through refactoring, clean code principles, and technical innovation
• Work in highly collaborative engineering environments with shared ownership of solutions

Required Skills & Experience

• Strong commercial experience developing backend applications using Kotlin
• Solid understanding of object-oriented design and software engineering principles
• Experience building distributed systems, microservices, and event-driven architectures
• Hands-on experience with cloud platforms, preferably Google Cloud Platform (GCP)
• Experience with:
• Kubernetes (GKE) and/or Cloud Run
• Cloud SQL
• Caching technologies
• Logging and monitoring tools
• Secure key and secrets management
• Strong understanding of CI/CD pipelines and modern SDLC practices
• Experience working in enterprise or regulated environments
• Comfortable supporting production systems with high availability requirements

Preferred Skills

• Experience within Capital Markets, Investment Banking, Trading, or Financial Services environments
• Exposure to Agile, Extreme Programming (XP), Test-Driven Development (TDD), and continuous refactoring practices
• Experience with infrastructure automation and cloud-native deployment models
• Knowledge of event streaming and messaging platforms

What We're Looking For

• Strong problem-solving and analytical skills
• Passion for building high-quality software
• Collaborative mindset and excellent communication skills
• Ability to thrive in fast-paced, business-critical environments
• Commitment to continuous learning and engineering excellence

Benefits

• Opportunity to work on a large-scale, business-critical platform
• Exposure to modern cloud-native technologies
• Collaborative engineering culture
• Career growth and professional development opportunities
• Competitive compensation and benefits package

If you are passionate about Kotlin, cloud-native engineering, and building scalable platforms that support critical business operations, we would love to hear from you.

Pay: £120,000.00-£160,000.00 per year

Work Location: Hybrid remote in London