Senior Backend Engineer

Description

**Our mission is to enable everyone to build wealth** ----------------------------------------------------- We reinvent how trading and investing work by creating exceptional products people love. That takes high standards, high velocity and engineers who own what they ship. Today, we serve over 6 million clients, with more than €38 billion in assets under management \- a testament to the scale and trust we have built in just a few years. At that scale, performance, reliability and data integrity are part of the product. Our platform is powered by a modern, high\-performance engineering stack designed for scale and reliability: Java 21 (Spring), Go, Node.js (TypeScript), PostgreSQL, MariaDB, Redis, Kafka, ClickHouse, Elasticsearch, Docker, Grafana, AWS, Kubernetes and Kibana. **About the role** ------------------ Senior Backend Engineers work across our backend organisation. Your team match will reflect your strengths, interests and where you can contribute most. Across every team, the model is the same: small, autonomous groups, short release cycles and ownership from problem definition through production. **What you’ll do** ------------------ * Own backend solutions end to end: understand the business problem, shape the requirements, design the solution, build it, test it, deploy it and run it in production. * Design and evolve services for performance, scale, resilience and data integrity. * Make clear technical decisions with a full understanding of the constraints, alternatives and trade\-offs. * Keep code and systems maintainable as products and requirements evolve. * Diagnose difficult production problems, address their underlying causes and prevent recurrence. * Work closely with product and engineering colleagues to turn complex requirements into simple, durable solutions. * Review work critically, share knowledge and raise the engineering standard across the team. **What you need to have** ------------------------- * Proven ownership of backend services built and operated within a microservices architecture. * A strong grasp of communication protocols such as HTTP, WebSockets and AMQP, including when to apply each. * Production fluency in at least one modern backend framework. * Deep knowledge of relational databases, including indexing, transactions, isolation levels, locking mechanisms and high\-performance design. * A track record of designing systems for high availability, scalability and resilience. * Clear, structured problem\-solving and the ability to explain technical decisions and trade\-offs. * Strong engineering fundamentals, sound judgement and confidence learning unfamiliar technologies. ***Depth in one backend ecosystem and sound tool choice matter more than familiarity with every technology listed.*** Bring your ambition to Europe’s fastest\-growing mobile broker!