Staff Backend Engineer: Scale & Reliability Leader

Trading 212 Ltd.; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Trading 212 Ltd. is seeking a Staff Backend Engineer in London to shape technical direction and stay close to core systems. This role focuses on solving high-consequence backend problems across services and product domains.

You will lead architectural decisions, mentor engineers and collaborate with product leaders to invest in durable, scalable infrastructure while remaining hands-on when needed.

Qualifications

• Evidence of technical impact across multiple teams or a substantial product domain.
• Deep ownership of distributed backend systems operating at meaningful scale.
• Strong judgement in service boundaries, asynchronous communication, data ownership, consistency and failure modes.
• Deep knowledge of relational databases, transactions, concurrency and high-performance design.
• A track record of improving reliability, scalability, observability or developer effectiveness through durable mechanisms.
• The ability to influence technical direction through evidence, clarity and trusted execution rather than title.
• Clear communication that helps teams act on complex technical decisions.
• Strong engineering fundamentals and the judgement to choose when to standardise, simplify or leave a system alone.

Responsibilities

• Own high-consequence backend problems that span services, teams or product domains.
• Establish clear system boundaries and architectural direction without creating unnecessary central control.
• Lead technical decisions by making constraints, alternatives, risks and trade-offs explicit.
• Improve performance, resilience, data integrity, operability and failure handling across production systems.
• Resolve recurring structural problems rather than treating symptoms team by team.
• Remain hands-on where implementation, diagnosis or prototyping is the fastest way to create clarity.
• Mentor senior engineers, raise review quality and make strong engineering judgement easier to reproduce across teams.
• Partner with engineering and product leaders on sequencing, risk and long-term technical investment.

Job description

Trading 212 Ltd. is seeking a Staff Backend Engineer in London to shape technical direction and stay close to core systems. This role focuses on solving high-consequence backend problems across services and product domains.

You will lead architectural decisions, mentor engineers and collaborate with product leaders to invest in durable, scalable infrastructure while remaining hands-on when needed.