Senior Platform Engineer

We’re hiring a senior, product-minded engineer to help build and scale an internal application platform used across a fast-moving, global financial environment. This is a high-ownership role focused on enabling internal teams to build faster, safer, and better software.

What you’ll be doing

  • Designing and building core internal platform services (auth, permissions, UI frameworks, data access layers)
  • Creating reusable tooling and frameworks that accelerate application development
  • Partnering closely with non-engineering teams (product, operations, risk, compliance) to design real-world workflows
  • Owning shared infrastructure: service orchestration, observability, CI/CD, error handling
  • Setting standards for architecture, frontend/backend patterns, and platform onboarding
  • Mentoring engineers and driving best practices across teams
  • Integrating modern AI tooling (LLMs, vector databases, RAG workflows) into internal platforms

What we’re looking for

  • 6+ years experience as a software or platform engineer in complex environments
  • Strong Python engineering background (compiled languages a plus)
  • Experience with cloud-native systems (Docker, Kubernetes, CI/CD)
  • Familiarity with distributed systems, high-throughput services, and multi-threading
  • Exposure to internal developer platforms, shared libraries, or enterprise tooling
  • Excellent communication skills and comfort working with non-technical stakeholders

Why this role

  • High impact, greenfield platform work
  • Modern tech stack with real ownership
  • Global scale with startup-style autonomy
  • Competitive compensation and strong growth opportunities

Job Details

Company
Harrington Starr
Location
City of London, London, United Kingdom
Posted