(Senior) Kotlin / Java Software Engineer

Who you are

• A university degree in computer science, engineering or a comparable qualification
• Strong professional experience building production backend services with Kotlin or Java and Spring Boot
• Experience designing and operating distributed, event-driven, high-availability systems with clear API and service boundaries
• Solid understanding of Domain-Driven Design and the ability to model complex business workflows in maintainable software
• Demonstrated ability to work on latency-sensitive, high-throughput systems, including performance analysis, monitoring, capacity considerations and failure-mode design
• Experience designing, operating and optimising data persistence for backend services, including relational databases such as PostgreSQL/MySQL and NoSQL databases such as DynamoDB
• A strong engineering-quality mindset: clean, secure, testable, documented, maintainable code and ownership of services in production
• Familiarity with cloud-native development and operations, ideally AWS, Docker, Terraform, CI/CD pipelines, monitoring, and observability tooling
• Strong analytical skills and clear, audience-appropriate communication with engineering, product, operations and business stakeholders
• Experience with designing and operating gRPC services, including protobuf-based API design, backward-compatible schema evolution, error handling and observability, is a plus
• Experience with financial-market systems requiring strict operational controls and auditability is a strong plus

What the job involves

• Be part of a highly motivated, cross-functional team building and operating Scalable Capital’s Trading Platform
• Design, build, and evolve business-critical services supporting the trading lifecycle—from order intake and validation through execution, status updates and post-trade processing
• Develop reliable, scalable, and observable backend services using Kotlin, Java, and Spring Boot in a distributed, event-driven environment
• Work with product, operations, risk, and other engineering teams to translate complex trading processes into clear, resilient software models and APIs
• Build integrations with internal platforms and external trading venues, ensuring robust processing of time-sensitive financial data
• Take ownership from idea to production: contribute to architecture, implementation, testing, deployment, monitoring, and continuous improvement
• Help ensure the platform meets high standards for correctness, performance, availability, security, and auditability
• Work in an autonomous agile team using modern software-development practices, including code reviews, automated testing, continuous integration and delivery, cloud-based infrastructure, and infrastructure as code
• Raise engineering standards by improving reliability, automation, observability, developer experience, and operational processes

Benefits

• Remote working opportunities - collaborate with your team no matter where you are in Germany: the majority of our jobs can be done working from home. So if you aren't near one of our physical locations in Germany, check out if your job is eligible remotely
• Join an international and diverse, inclusive community - be part of a network of highly talented, diverse and motivated people, from more than 30 nationalities. We enjoy regular office parties & after work drinks, BBQs in the summer, weekly runs and much more
• Lounge around - take a break to relax on our terrace in Munich or in the Beergarden downstairs in Berlin. Enjoy fresh fruits, soft drinks, and tea daily, and if want, develop your Barista skills with our Espresso machine
• Gear and perks - work with the latest hardware (including a MacBook Pro or equivalent and your choice of headphones). We also support your workplace with the equipment that you need, either in the offices or at home
• Learn and grow - develop yourself further with a personal education budget and in-house knowledge sharing sessions with catered lunch. If you want to learn or improve your German language skills, you will like the free classes right in the office or our support for online classes
• Have an impact - ship features to thousands of users and work with leading financial institutions across Europe on a regular basis. Transform with us the traditional finance industry with the aim of democratizing investment management and brokerage