Senior Python Engineer | Quantitative Hedge Fund | £150k–£250k + Bonus

Oliver Bernard; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Oliver Bernard is seeking a Senior Python Engineer in London to join a team building scalable internal platforms and services for a high-performance investment technology environment.

You will design and implement Python-based systems, contribute to internal frameworks, and optimize performance across large-scale infrastructure. The role emphasizes quality, reliability and collaboration with engineering and business stakeholders.

Qualifications

• 6+ years of commercial software engineering experience.
• Strong Python development skills with a focus on performance and maintainability.
• Solid understanding of distributed systems and software architecture.
• Hands-on experience with Docker and Kubernetes.
• Strong Linux skills and familiarity with version control.
• Experience building and maintaining CI/CD pipelines and automated workflows.
• Genuine interest in solving complex engineering problems and building reliable systems at scale.

Responsibilities

• Design and build scalable, high-performance applications and backend services using Python.
• Develop internal frameworks, tooling and platforms used across the business.
• Work with distributed systems, complex architectures and large-scale infrastructure.
• Drive code quality through testing, code reviews and engineering best practices.
• Collaborate with engineers and stakeholders to shape technical solutions and deliver new capabilities.
• Identify bottlenecks, troubleshoot issues and continuously improve system performance.
• Contribute to automation and the evolution of the team's development practices.

Skills

Python development

Distributed systems

Code quality

Performance optimization

CI/CD

Problem solving

Tools

Docker

Kubernetes

Linux

Job description

London | Permanent | High-performance Engineering

• Location: London

Oliver Bernard are partnering with a leading quantitative investment firm to hire a Senior Python Engineer into a team building the technology that enables the wider business to operate at scale.

This isn't a typical product engineering role. You'll be working on the internal platforms, frameworks and services used by engineering and investment teams, with a focus on building robust, scalable systems and improving developer productivity across the organisation.

Expect technically challenging problems, high engineering standards and the opportunity to make a meaningful impact in a performance-driven environment.

The Role

• Design and build scalable, high-performance applications and backend services using Python.
• Develop internal frameworks, tooling and platforms used across the business.
• Work with distributed systems, complex architectures and large-scale infrastructure.
• Drive code quality through testing, code reviews and engineering best practices.
• Collaborate with engineers and stakeholders to shape technical solutions and deliver new capabilities.
• Identify bottlenecks, troubleshoot issues and continuously improve system performance.
• Contribute to automation and the evolution of the team's development practices.

What You'll Bring

• 6+ years of commercial software engineering experience.
• Strong Python development skills, with an emphasis on performance, maintainability and code quality.
• A solid understanding of distributed systems and software architecture.
• Hands-on experience with Docker and Kubernetes.
• Strong Linux skills and familiarity with version control.
• Experience building and maintaining CI/CD pipelines and automated workflows.
• A genuine interest in solving complex engineering problems and building reliable systems at scale.

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