Senior Software Engineer – Platform

🕒 December 23, 2025

🏢🏡 London – Hybrid

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

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Longshot Systems

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11 - 50 employees

Longshot Systems is a small startup producing high throughput, low latency trading software and tools for use in sports betting markets.

📋 Description

• Join the team that owns and develops our trading platform • Architect and implement solutions to meet product, performance or stability goals • Own technical standards and coding guidelines, CI/CD, observability and security • Integrate trading venues and optimize key parts of the platform • Maintain a significant historical data repository • Support wider trading and research efforts around the company

🎯 Requirements

• Masters or PhD in a quantitative or technical subject (e.g. Maths, EE, Physics, Comp Sci) from a top university • Deep experience building mission critical distributed systems (finance, gaming, telco, ad-tech, etc.) where throughput, correctness and availability are a hard requirement. • Startup experience: Proven track record shipping products in small, fast moving teams. • Proven track record delivering and maintaining production systems in at least one systems language (Go, C++, Rust, Java, C#, etc.), with clear, idiomatic designs. • Architecture & design: Able to reason about trade offs and produce clean, evolvable service boundaries. • Cloud & DevOps: comfortable working in AWS, linux and wrangling build pipelines. We have dedicated DevOps people, but you do need to be competent in the core skills here. • Fluent written and spoken English. Communicating with the team is as important as the technical work. You need to be able to effectively collaborate on everything from low level details to long term strategic planning. • Nice to have • Trading, market making or exchange experience.

🏖️ Benefits

• Competitive bonus scheme • 10% matched pension contributions • Private healthcare insurance • Long term illness insurance • Gym membership