Quant Developer | Rust | High-Performance Trading | London

OHO Group; Greater London; On-site; GBP 180,000 - 250,000; Full time

Job summary

Oho Group in London is seeking an experienced Quant Developer to join a fast-growing trading technology start-up. You will build high-performance infrastructure in Rust, owning critical systems and shaping the engineering direction.

The role combines strong software engineering with industry experience in electronic trading or market making, offering ownership, impact, and exposure to a scaling business.

Qualifications

• Experience in quantitative development, electronic trading or market making.
• Strong software engineering fundamentals with Rust/C++/Python.
• Comfort working on performance-critical, production-grade systems.

Responsibilities

• Build and optimise high-performance trading systems in Rust.
• Develop core infrastructure across pricing, execution and market data.
• Collaborate with trading team to solve complex problems.
• Own key systems and influence architecture.
• Improve performance, reliability and scalability.

Skills

Quant dev experience

Rust/C++/Python

Trading systems familiarity

Performance optimization

Ownership mindset

Job description

Quant Developer | Rust | High-Performance Trading | London Want to move from a large bank or trading firm to a start-up where you can take real ownership of the technology? A fast-growing, recently funded trading technology start-up is looking for an experienced Quant Developer to join its engineering team in London. The company is building high-performance trading infrastructure across modern financial markets, using Rust at the core of its technology. It's an opportunity to work on technically demanding systems where performance, reliability and speed are critical. You'll be joining a small, ambitious team where engineering has a direct impact on the business. They're looking for someone who combines strong software engineering ability with genuine industry experience, and who wants more influence over the systems they build and the direction they take. Having recently secured significant new investment, the business is entering an exciting stage of growth. For someone coming from a larger bank, hedge fund or trading firm, it's a chance to take the experience they've built in an established environment and apply it somewhere they can have a much bigger impact.

About you

• Experience in quantitative development, electronic trading or market making
• Strong software engineering fundamentals, ideally with experience in Rust, C++ or python
• Understanding of trading systems, pricing, execution or market data
• Comfortable working on performance-critical, production-grade systems
• Interested in taking greater ownership within a smaller, fast-moving team
• Keen to work with modern technologies and help shape a growing engineering function

What you’ll be doing

• Building and optimising high-performance trading systems in Rust
• Developing core infrastructure across pricing, execution and market data
• Working closely with the trading team to solve complex technical problems
• Taking ownership of key systems and contributing to architectural decisions
• Improving system performance, reliability and scalability
• Helping shape the technology as the business continues to grow

What’s on offer?

• Up to £250k and other benefits
• London-based
• Opportunity to work with Rust in a performance-critical environment
• Greater ownership and influence than a typical role in a larger financial institution
• Direct exposure to the trading business and its technical challenges
• Recently funded start-up with ambitious growth plans
• Opportunity to help shape the engineering team and core technology