Senior Backend Engineer — End-to-End Ownership

Trading-21; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Trading-21 is building wealth for millions by delivering high-performance trading and investing platforms. We seek Senior Backend Engineers who will own backend solutions end to end, from problem definition to production.

Join autonomous, small teams focused on fast releases, strong reliability and data integrity. You’ll design services for scale and work with product partners to translate complex requirements into durable solutions, continuously raising engineering standards across the team.

Qualifications

• Proven ownership of backend services in a microservices architecture.
• Knowledge of HTTP, WebSockets and AMQP protocols.
• Production fluency in at least one modern backend framework.
• Deep knowledge of relational databases, indexing and transactions.
• Experience designing systems for availability, scalability and resilience.
• Clear, structured problem-solving and ability to explain technical decisions.
• Strong engineering fundamentals and ability to learn new technologies.

Responsibilities

• Own backend solutions end to end from problem to production.
• Design and evolve services for performance and reliability.
• Make clear technical decisions with trade-offs.
• Keep codebases maintainable as requirements evolve.
• Diagnose production issues and address root causes.
• Collaborate with product and engineering to translate requirements.
• Review work and raise engineering standards across the team.

Skills

Backend ownership

HTTP/WebSockets/AMQP

Backend framework

Relational databases

High availability & scalability

System design

Engineering fundamentals

Job description

Trading-21 is building wealth for millions by delivering high-performance trading and investing platforms. We seek Senior Backend Engineers who will own backend solutions end to end, from problem definition to production.

Join autonomous, small teams focused on fast releases, strong reliability and data integrity. You’ll design services for scale and work with product partners to translate complex requirements into durable solutions, continuously raising engineering standards across the team.