We are looking for a Principal Developer to lead the delivery of a greenfield front office portfolio management platform for a fixed income fund manager in London. This role combines deep hands on engineering with senior stakeholder ownership and the mandate to grow a local engineering capability over time.
You will work directly with portfolio managers and fixed income stakeholders, owning requirements from early discovery through to production delivery, while remaining closely involved in the technical build of the platform.
What You’ll Be Doing:
Act as the senior technical partner to front-office stakeholders, translating investment and trading workflows into scalable systems
Lead technical design and delivery for a greenfield front‑office platform
Own requirements end‑to‑end, from discovery and refinement through to implementation
Remain hands‑on across the stack while setting engineering standards and direction
Shape architecture, tooling, and development practices for a modern portfolio management system
Support the growth and mentoring of a London‑based engineering team
Required Experience:
Strong front‑office experience within capital markets, with fixed income domain expertise
Proven ability to manage senior stakeholders and operate as a trusted technical authority
Experience delivering cloud‑based, production‑grade systems from the ground up
Technology Environment:
Design System & UI: Google Material Design, Material UI (MUI), React Material Table
APIs & Services: Node.js, GraphQL, REST APIs, WebSockets (Socket.IO or similar)
Data & Caching: PostgreSQL, Redis, Neo4j / Neptune Graph Database
Cloud & Infrastructure: AWS (ECS, S3, ElastiCache, EventBridge, SQS/SNS)
Nice to Have: AI‑enabled development experience (Bedrock, Claude, LlamaIndex, LangChain)
Why Join
This is a rare opportunity to take ownership of a front‑office, greenfield platform, work directly with investment decision‑makers, and help build a long‑term engineering presence in London all with the autonomy expected at Principal level.
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