(Senior) Backend Engineer, Platform

Responsibilities

• Write high-quality, performant code primarily in Go.
• Implement new microservices while helping us responsibly manage and migrate away from legacy services.
• Work closely with product managers, designers, and data scientists to turn abstract requirements into concrete technical designs.
• Ensure our systems stay responsive under heavy load, optimising for both latency and reliability.

Requirements

• 3+ years of experience (5+ years for seniors) building and maintaining scalable backend services.
• We use Go. If you know it, great. If not, we’ll interview you in your strongest language (Python, C++, Java, Ruby, etc.). We hire for engineering fundamentals, not syntax.
• In-depth knowledge of relational and NoSQL databases (PostgreSQL, MongoDB, Redis) and experience with message brokers like RabbitMQ or Kafka.

What you’ll do

Not explicitly separated, but responsibilities listed above describe daily work: building Go-based microservices, migrating from legacy Ruby monolith, collaborating with cross-functional teams, maintaining performance and reliability.

Who you are

Not explicitly separated, but requirements imply you are a backend engineer with 3+ (5+ for seniors) years of experience, proficient in Go (or strong in another language), and knowledgeable in relational/NoSQL databases and message brokers.

Tech stack

• Go
• PostgreSQL
• MongoDB
• RabbitMQ
• Redis
• gRPC
• Thrift
• AWS
• Kubernetes
• Terraform

Team description

Platform team that builds shared tooling, manages migrations (including moving away from a Ruby monolith), and evolves infrastructure to enable the broader engineering organization to move fast. Emphasis on clean, maintainable code, shipped fast with TDD, DDD, and CI/CD.

Benefits & perks

• Office-based role in West London, four days a week with flexible start/finish times, plus one remote day per week
• Salary: £90,000 – £120,000
• Employee stock options plan
• Private medical and dental insurance
• Life and critical illness cover
• Latest-generation MacBook Pro and 4k display
• Monthly credit towards Wheely journeys
• Cycle to Work scheme
• Professional development stipend
• Relocation support, including visa sponsorship and allowance

How to apply / interview process

Not a separate section in the provided text beyond the role description; interview process details mentioned: recruiter screen, algorithms and live coding. Senior+ candidates also complete a system design section and a structured review of past experience and achievements.