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# Python Software Engineer

- **Company:** High-frequency Trading
- **Location:** Cardiff, UK
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Algorithmic Trading, C++ (Programming Language), High-Frequency Trading, Python (Programming Language), Linux System Administration, Software Engineering, SQL Databases, Real Time Systems, Low Latency, Real Time Data
- **Published:** July 1, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/x/40486599/

## About the Role

scalability across key trading infrastructure components. Partner with cross-functional teams to improve tooling, observability, and automation. Deliver robust, production-ready solutions in a fast-paced environment. Requirements Min 2+ years of Python experience in a professional setting (HFT, trading, fintech, or other high-performance domains). Exposure to C++ or willingness to work in multi-language environments is a plus. Familiarity with SQL databases and Linux-based systems. Interest in financial markets, real-time systems, or algorithmic trading. Why Apply? Opportunity to work on high-impact systems used in live trading. Collaborate with some of the brightest minds in quantitative finance and software engineering. Competitive compensation package with a base salary, plus bonus. We are reviewing applications on a rolling basis. If this role sounds like a fit, apply now to learn more. Please note: Due to high application volume, we're only able to respond to candidates who are
shortlisted within 3 working days.

## Description

Python Software Engineer - High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where technology and speed are paramount. They build and run highly scalable, ultra-low latency trading systems that compete across major global exchanges. You'll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you'll collaborate with traders, quantitative researchers, and other developers to design, develop, and optimise trading infrastructure. You'll be directly contributing to systems that operate at nanosecond-level latency and handle massive volumes of real-time data. Key Responsibilities Develop and maintain systems for real-time market data, trade execution, and reconciliation. Optimise performance and


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