Senior Software Engineer

Beamost; Leeds; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading technology firm in the United Kingdom is seeking an experienced Senior Python Software Engineer to take ownership of a trading application and drive its ongoing development. The ideal candidate will manage the existing codebase, enhance performance, and ensure reliability. Key responsibilities include maintaining and optimising the application, adding new features, and collaborating closely with the founder. A strong background in low-latency, high-performance applications is essential for this role.

Qualifications

• 5+ years of professional experience in Python development.
• Strong understanding of low-latency, high-performance software.
• Experience with real-time data processing and pipelines.

Responsibilities

• Maintain and optimise the existing Python-based trading application.
• Add new features while ensuring performance and reliability.
• Collaborate with the founder to shape the technical direction.

Skills

Python development

Performance engineering

Real-time data pipelines

Collaboration

Tools

Redis

Azure VMs

Anaconda environments

Job description

We are looking for an experienced Senior Python Software Engineer to take ownership of an established trading-related application and drive its ongoing development. You will manage and enhance the existing codebase, deliver new features, ensure reliability and performance, and help evolve the system as the business grows.

This is an excellent opportunity for someone who enjoys autonomy, technical responsibility, and working on low-latency, high-performance applications.

What Youll Do

• Maintain, extend, and optimise an existing Python-based trading application
• Add new features and improve current capabilities with a focus on performance, reliability and clean architecture
• Build and optimise real-time pipelines handling high-frequency data
• Improve latency, throughput, and reliability using profiling and performance engineering
• Work with Redis, Azure VMs, and Anaconda environments
• Implement and maintain systems requiring millisecond-level timing precision
• Troubleshoot production issues quickly during key market hours
• Collaborate directly with the founder to shape technical direction and priorities
• Integrate with market data feeds and brokerage / order-routing components

Essential Skills

• Expert-level Python developer (min. 5+ years professional python experience)
• Demonstrable experience with low-late...