Developer - FX Derivatives

JR United Kingdom; London; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

A leading financial services firm seeks a Senior Python Developer to enhance their global trading technology. This opportunity involves designing robust trading systems, collaborating with traders and quants, and contributing to mission-critical projects that impact financial markets directly. The ideal candidate will demonstrate strong programming skills and possess a solid educational background in a relevant field. Join a team focused on innovation and technical excellence in a hybrid work model.

Qualifications

• Strong Python programming skills are essential.
• Experience in financial systems, particularly FX and derivatives.
• Collaborative attitude within Agile teams.

Responsibilities

• Build and maintain trading and pricing systems using Python.
• Design solutions for low-latency, high-availability trading.
• Collaborate with front-office teams for tool development.

Skills

Python

Agile development

Real-time problem-solving

SQL

NoSQL

Algorithms

Data structures

Design patterns

TCP/IP networking

Messaging middleware

Education

Degree in Computer Science

Degree in Engineering

Degree in Mathematics

Degree in Physics

Job description

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Contract: 12 months initially (via umbrella)

? Work Model: Hybrid (3 days on-site, 2 days remote)

Shape the future of global trading technology.

A high-performing Front Office Technology team is looking for an exceptional Senior Python Developer to design and build cutting-edge, globally distributed financial systems. This is a unique opportunity to work in a fast-paced trading environment, collaborating directly with traders, quants, and operations teams to drive innovation in FX, Fixed Income, and Derivatives platforms.

If you’re a technologist at heart who writes clean, maintainable code and thrives under pressure, we want to hear from you.

? What You’ll Be Doing

• Building and maintaining mission-critical trading and pricing systems using Python (or C#/Java/C++)
• Designing resilient, low-latency, high-availability solutions for real-time trading
• Partnering with global dev teams in an agile setup (XP, Scrum, Kanban)
• Solving production issues as part of 3rd line support in live trading environments
• Collaborating with front-office users to deliver robust, scalable tools
• Contributing to CI/CD pipelines and automated test strategies

What You’ll Bring

• Strong background in Python (or other OO/functional languages)
• A degree in Computer Science, Engineering, Mathematics, or Physics
• Deep knowledge of algorithms, data structures, design patterns
• Experience in financial systems, preferably in FX, Derivatives, or Fixed Income
• Solid understanding of messaging middleware, TCP/IP networking
• Familiarity with agile development, CI/CD, and testing frameworks
• Calm and effective when tackling real-time production issues
• Experience with FX options or other derivatives
• Exposure to front-office platforms like Athena, SecDB, or Quartz
• Knowledge of financial protocols (e.g., FIX 4.4, FpML)
• Integration experience with broker feeds, trade repositories
• Proficiency in SQL or NoSQL database environments

? Why Apply?

This is more than just a coding role — it’s your chance to work on some of the most sophisticated trading systems in the financial world. You'll be joining a collaborative team that values smart engineering, creative problem-solving, and technical excellence — all while building software that has real-time, real-world impact.

Candidates will ideally show evidence of the above in their CV to be considered please click the “apply” button.

Please be advised if you haven't heard from us within 48 hours then unfortunately your application has not been successful on this occasion, we may however keep your details on file for any suitable future vacancies and contact you accordingly.

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.