Senior Backend Engineer — End-to-End, Scale & Reliability

Trading 212; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Trading 212 is seeking a Senior Backend Engineer to own backend services end to end within a microservices architecture. You will design, build and operate scalable, high-availability systems powering our trading platform used by millions of clients.

You’ll work with Java 21 (Spring), Go and Node.js (TypeScript), plus PostgreSQL/MariaDB and Redis, shaping performance, reliability and data integrity while collaborating with product and engineering to translate complex requirements into robust,

Qualifications

• Experience owning backend services in a microservices setup.
• Strong knowledge of HTTP, WebSockets and AMQP and when to use each.
• Production fluency in at least one modern backend framework.
• Deep understanding of relational databases, including indexing and transactions.
• Track record designing systems for high availability, scalability, and resilience.
• Clear, structured problem-solving and ability to explain technical trade-offs.
• Strong fundamentals and confidence learning new technologies.

Responsibilities

• Own backend solutions end to end from problem definition to production.
• Design and evolve services for performance, scale, resilience and data integrity.
• Make clear technical decisions with full context and trade-offs.
• Keep code and systems maintainable as requirements evolve.
• Diagnose production problems and address root causes.
• Collaborate with product and engineering to translate complex requirements into durable solutions.
• Review work, share knowledge and raise engineering standards.

Skills

Backend ownership

HTTP/WebSockets/AMQP knowledge

Backend framework fluency

Relational databases design

System design for high availability

Problem-solving

Learning unfamiliar technologies

Tools

Java 21 (Spring)

Go

Node.js (TypeScript)

PostgreSQL

MariaDB

Redis

Kafka

ClickHouse

Elasticsearch

Docker

Grafana

AWS

Kubernetes

Kibana

Job description

Trading 212 is seeking a Senior Backend Engineer to own backend services end to end within a microservices architecture. You will design, build and operate scalable, high-availability systems powering our trading platform used by millions of clients.

You’ll work with Java 21 (Spring), Go and Node.js (TypeScript), plus PostgreSQL/MariaDB and Redis, shaping performance, reliability and data integrity while collaborating with product and engineering to translate complex requirements into robust,