Quantitative Developer

Dex; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Dex partners with a leading quantitative finance firm to hire a Quant Developer. You will design and build end-to-end software for live trading systems, simulation frameworks, and research tooling, sat near the quants to influence what the firm can explore.

You will own your work, shipping robust, tested systems and translating complex hypotheses into production signals, with autonomy and clear communication across technical and non-technical partners.

Qualifications

• Commercial experience building production software in C# and/or Python.
• Strong object-oriented engineering skills with a track record of shipping robust, tested systems.
• Ability to work independently and communicate clearly with technical and non-technical partners.
• Genuine interest in applied problem-solving, particularly in quantitative finance.

Responsibilities

• Design and build robust, testable software for live trading systems and simulation frameworks.
• Develop core modelling libraries and new research tooling from concept to production.
• Partner directly with quantitative analysts, translating complex hypotheses into production signals.
• Take end-to-end ownership of critical systems, ensuring high performance and reliability.
• Contribute to an engineering group where technical decisions shape research capabilities.

Skills

C#

Python

OOP

Communication

Job description

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

The role

This firm solves the hardest problems in quantitative finance. They apply scientific clarity to market complexity, building the platforms and tools that power high-impact research with machine learning and big data. As a Quant Developer, you'll build the end-to-end toolkit that lets quantitative analysts turn ideas into tradable signals. This isn't just maintenance; you'll design and build robust, testable software for live trading systems, simulation frameworks, and research tooling. You'll own your work, sitting close to the quants, directly shaping what the firm can explore.

The work

• Design and build robust, testable software for live trading systems and simulation frameworks.
• Develop core modelling libraries and new research tooling, from concept to production.
• Partner directly with quantitative analysts, translating complex hypotheses into production signals.
• Take end-to-end ownership of critical systems, ensuring high performance and reliability.
• Contribute to a seasoned engineering group, where your technical decisions materially shape research capabilities.

What You Bring

• Commercial experience building production software, ideally in C# and/or Python.
• Strong object-oriented engineering skills; a track record of shipping robust, tested systems.
• Ability to work independently and communicate clearly with technical and non-technical partners.
• A genuine interest in applied problem-solving, particularly in quantitative finance.