Senior Software Engineer | Full Stack | Investment Tech | Hybrid

Senior Software Engineer | Full Stack | Investment Tech | London, Hybrid

We’re hiring a Senior Software Engineer to join a London-based Investment Technology team building the platforms used for risk, analytics, and investment decision-making
. This is a genuinely hands-on role: you’ll ship production features, improve reliability, and help shape modern engineering standards across a business-critical platform.

If you enjoy solving real problems with clean, testable code (and you don’t need ten meetings to write a function), you’ll fit right in.

📍 London City | Hybrid (3 days in office)

• Build and evolve backend services in C#/.NET (performance, correctness, maintainability)
• Develop data-driven APIs and pipelines (
  Python services, e.g., FastAPI, and integrations)
• Deliver modern React
  UI components that are fast, usable, and predictable
• Troubleshoot issues end-to-end across app + data layers (you’ll own problems, not just spot them)
• Implement and improve CI/CD using Azure Dev Ops and/or Git Hub Actions
• Partner with business stakeholders to clarify requirements and iterate quickly
• Keep documentation lightweight but useful (the goal is clarity, not a novel)

• Strong commercial experience with C#/.NET
• Production experience with React (you’ve built real UIs, not just tweaked CSS)
• Hands-on Python (FastAPI or similar is a plus)
• Solid SQL skills (querying, performance awareness, data modelling basics)
• Strong testing mindset:
  unit tests in C# and ideally Python too
• Clear communicator who can work with technical and non-technical stakeholders
• Exposure to investment management / fixed income domains

• Azure experience (Functions, App Services, storage, monitoring)
• Containers:
  Docker (and Kubernetes is a bonus)
• Microservices patterns and practical trade-offs
• Cosmos
  
  DB / No
  
  SQL
  , Snowflake
  , or similar data platforms
• Front-end testing (e.g., Playwright/Jest) and UI libraries (e.g.,
  Material UI
  )

• Modern stack (C# + React + Python + cloud) with genuine delivery ownership
• Work directly on systems that influence investment decisions
  , not internal admin tooling
• A team that values engineering quality (testing, code reviews, automation)

📧Interested? Apply directly with your CV to this advert or email it to chantelle.smith