Senior / Mid-Level Full-Stack Software Engineer C#/.NET | Angular | High-Ownership Engineering | London

A leading systematic investment firm is expanding its Post-Trade Engineering function and is hiring a highly capable Full-Stack Software Engineer to build mission-critical reporting, investor-facing, and post-trade systems. This is an exceptional opportunity to work in a small, high-calibre engineering team where your work has immediate business impact and real ownership.

This role is ideal for someone with strong engineering fundamentals, strong academics, and experience across modern front-end frameworks (Angular preferred), who wants to operate in a technically rigorous, data-centric environment.

The Opportunity

You will design and build systems that sit at the heart of the firm’s client, reporting, and operational workflows, including:

• External investor portals and embedded client applications
• Internal tools supporting bespoke reporting and communications workflows
• Data-rich post-trade and operational applications used daily by Front Office, Client Solutions, Middle Office, and Fund Accounting
• End-to-end ownership: requirements, architecture, development, release, and production support

If you enjoy working close to data, solving complex problems, and interacting directly with business users, this is a role where you will be deeply embedded in how the firm actually runs.

Technical Environment

You’ll work with a modern, well-architected stack:

Backend:

• C# / .NET / .NET Core
• Distributed systems, microservices, integration-heavy engineering
• SQL Server and data modelling

Frontend:

• Angular (highly preferred)
• TypeScript, RxJS, modern UI patterns
• Strong interest in design and UI/UX a significant advantage

Practices & Approach:

• High-quality engineering and testing standards
• CI/CD, automated pipelines
• Clean architectural patterns, maintainability, correctness
• Close collaboration with stakeholders; engineers frequently shape product direction

What They’re Looking For

Core Requirements:

• Strong software engineering fundamentals (data structures, OO design, distributed systems concepts)
• Professional experience in C# / .NET
• Hands-on Angular experience OR strong React/TypeScript engineers willing to pick up Angular quickly
• Ability to understand data flows, validate correctness, and challenge assumptions
• Excellent communication skills and ability to work directly with business users
• End-to-end ownership mentality

Academic Background:

• A strong academic profile is highly desirable — Computer Science, Mathematics, Physics, or related quantitative disciplines from top universities
• Evidence of analytical thinking and problem-solving ability

Why This Role Is Different

• Small team, big impact — you will not be siloed; engineers directly shape systems used firm-wide
• High autonomy — you design, build, and own the entire lifecycle
• Breadth of exposure — client-facing portals, internal reporting, post-trade pipelines, operational systems
• Technical challenge — data complexity, correctness, and reliability matter deeply here
• Exceptional peer group — the team is formed of high-aptitude engineers with strong academic and professional backgrounds
• Real business partnership — daily interaction with Client Solutions, Middle Office, Fund Accounting, and senior stakeholders

If you want to be at the intersection of engineering excellence, rich data systems, and meaningful product ownership, this is one of the strongest opportunities in London. If you are a strong C# or full-stack engineer with excellent fundamentals and a desire to work in a high-ownership, business-facing technology role, please get in touch.