Mid Backend Engineer

Stack

Responsibilities

• ▹Own features and services end to end: take a business problem, help shape the requirements, design the solution, build it, test it, deploy it and monitor it in production
• ▹Design for performance, scale and resilience: build code and services that hold up under load, minimise downtime and latency, and degrade gracefully when things go wrong
• ▹Take real ownership of your code: keep it maintainable as requirements evolve, and know when and how to refactor
• ▹Diagnose and fix production issues: get to the underlying cause, not just the symptom, and put guardrails in place to stop it recurring
• ▹Work closely with product and engineering colleagues: turn moderately complex requirements into simple, durable solutions, escalating and collaborating with seniors on the parts that need broader system context
• ▹Contribute to the team's engineering standard: review others' work constructively, share what you know, and take feedback in stride

Requirements

• ▹Solid, hands-on experience delivering backend services in production, ideally within a microservices architecture
• ▹A good working grasp of communication protocols such as HTTP and AMQP, including a sense of when to use each
• ▹Production experience with at least one modern backend framework; depth in one ecosystem matters more than breadth across many
• ▹Solid understanding of relational databases: indexing, transactions and isolation levels, and the ability to design sound, well-normalised database schemas
• ▹Some exposure to designing for high availability, scalability or resilience
• ▹Clear, structured problem-solving: you can explain your technical decisions and trade-offs, and you are comfortable asking for help when a problem needs more context
• ▹Strong engineering fundamentals and sound judgement, with the confidence to pick up unfamiliar technologies as needed

Soft skills

What we offer

• ▹Challenges that help you grow and realise your potential quickly
• ▹The opportunity to make a big impact with services used by millions of investors
• ▹Smart, spirited, helpful, high-performing colleagues
• ▹Generous remuneration package, including annual bonuses
• ▹Private health insurance
• ▹Sports card
• ▹25 days of paid vacation per year
• ▹Treats and a spacious game room

About the company

Trading 212's mission is to enable everyone to build wealth. It serves over 6 million clients and has more than €40 billion in assets under management. Its platform runs on Java 21 (Spring), Go, Node.js (TypeScript), PostgreSQL, MariaDB, Redis, Kafka, ClickHouse, Elasticsearch, Docker, Grafana, AWS, Kubernetes and OpenSearch.