Senior Software Engineer

As our next Senior Software Engineer in Trust & Safety, you'll own the systems that decide how tradespeople are checked, how reviews are processed and how our marketplace stays honest at scale. You'll work alongside the vetting and reviews teams, who are on the front line of trust, and build the infrastructure that lets them work with confidence. When something breaks in production, you'll lead the response. When something looks brittle at design time, you'll say so.

Responsibilities

Own and evolve the systems behind how tradespeople are verified, how reviews flow through the platform and how content is moderated; Lead the response when things break, reading distributed traces, correlating logs across services and finding the cause, not just the symptom; Design event-driven workflows that are reliable by default: idempotent, retryable, with dead-letter handling; Work directly with the vetting and reviews teams to understand what trust means day to day and build systems that hold up to it; Tighten the operational seams: better monitoring, clearer alerting, locked-down auth and outbox patterns that keep data consistent

Requirements

Strong TypeScript; comfortable owning a service end to end, from schema to deployment; Fastify or a similar Node.js framework, with enough HTTP knowledge to rarely be surprised; event-driven instincts, including understanding of idempotency in practice and why the outbox pattern exists; full-stack comfort, including Next.js; Datadog fluency (APM traces, log search, metric queries); SQL for diagnostics during an incident; GCP basics such as Pub/Sub backlogs and DLQs; experience leading production incidents; ability to communicate clearly under pressure and drive to a fix; an eye for systemic problems at review time; a habit of making the people around you better; regular use of AI tools like Cursor or Claude Code, and a keen interest in helping the team get more out of them

Benefits

Competitive salary, annual bonus & equity scheme; Health, wellbeing and learning support; Gym membership, Smart Tech Scheme, Cycle Scheme; Birthday/special day leave, buy & sell holiday scheme; 1 week's paid charity leave, and more