Software Engineer Jobs

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OTC Software Engineer (C++/Rust)
LondonNegotiable

Our client is building a global financial institution for digital assets, designed from the ground up with a strong focus on market integrity and efficiency. Operating in a rapidly evolving market, they take a disciplined, first‑principles approach to everything they do. This mindset underpins their core services, spanning institutional liquidity p...

SRE Fixed Income
LondonUp to £200000 per annum

Our client, a world-leading systematic and quantitative trading tier one hedge fund, is looking for an SRE for their London office. The role requires the individual to be skilled in programming using a high-level language and you will be sitting in their fixed income desk. You will be responsible for creating automated solutions and troubleshooting...

Low-Latency Systems Engineer (Rust)
LondonNegotiable

Our client are a London‑based, engineering‑led technology company building ultra‑high‑performance infrastructure for decentralised financial networks. Their systems operate at extreme scale and low latency, supporting sophisticated trading and financial activity while preserving decentralisation. The company is venture‑backed, profitable, and focus...

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Senior C# Software Engineer Trade Processing Systems
London Negotiable

Senior C# Software Engineer - Trade Processing Systems A global multi‑strategy investment firm is seeking a highly skilled C# Software Engineer to join its Post‑Trade and Transaction Systems team. This group builds the core platforms that drive trade processing, regulatory reporting, and operational workflows across a large‑scale, high‑performance ...

Site Reliability Engineer
City of LondonNegotiable

Our client, a world‑renowned High‑Frequency Trading (HFT) firm, is seeking a Site Reliability Engineer (SRE) with strong software engineering capabilities. In this role, you will design new platforms, tackle complex distributed‑systems challenges, and collaborate with highly skilled engineering teams to enhance and safeguard a mission‑critical envi...

Quantitative Developer | Crypto Market Making
LondonNegotiable

Our client are a research and trading firm building a tier‑1 high‑frequency trading platform. They design and operate systematic trading strategies in a fast‑paced, highly driven environment where new markets and opportunities appear quickly - and disappear just as fast. Many of their edges come from moving early: capturing arbitrage, basis, or str...

Explore Software Engineer Careers

From high-frequency trading platforms to next-gen fintech solutions, software engineers are at the heart of innovation. At Selby Jennings, we connect top-tier engineering talent with leading firms across quant finance, DevOps, cybersecurity, and cloud infrastructure.
 
Whether you're a backend specialist, full-stack developer, or systems architect, our global network offers roles that match your expertise and ambition. Explore opportunities in New York, London, Hong Kong, and beyond.