QA Engineer

Location: London (3 days in office: Monday-Wednesday)Sponsorship: Not available

We are a provider of high-performance trading and market-data technology, delivering ultra-low-latency solutions across global markets. Our systems support demanding front-office environments where reliability, determinism, and speed are critical.

We are seeking a QA Engineer who brings strong technical capability along with the right personal qualities-energy, curiosity, and a passion for breaking things before production does.

You will ensure the correctness, robustness, and reliability of complex trading and market-data systems. Working closely with developers and product teams, you will validate system behaviour, identify unexpected issues, and contribute to improvements across the SDLC.

This is a hands-on test engineering role for someone who enjoys deep investigation, questioning assumptions, and continuously improving testing processes.

• Design, develop, and execute test plans, test cases, and regression suites.
• Perform manual and automated testing within Linux environments.
• Write and execute scripts (Bash required) for testing and validation tasks.
• Investigate failures, analyse logs, diagnose root causes, and raise clear defect reports.
• Validate behaviour and performance of market-data and low-latency workflows.
• Collaborate with developers to reproduce issues and verify fixes.
• Contribute to improvements in testing frameworks, tools, and processes.
• Support release readiness reviews and provide QA signoff.

• Proven QA Engineering experience in complex software systems.
• Strong Linux and Bash skills (must-have).
• Good understanding of the software development lifecycle (SDLC).
• Scripting experience: Python or C++ is a Nice to Have, but transferable skills in other languages are welcome.
• Comfortable working with CI pipelines, version control, and defect-tracking tools.
• Strong analytical and troubleshooting skills, especially in distributed or performance-sensitive systems.

Experience in trading-technology or front-office environments, such as:

• Market Data
• FIX Trading / Order Flow
• Ultra-low-latency systems
• Exchange connectivity
• High-frequency trading workflows

(Not required, but highly beneficial.)

We place high value on personality and attitude. The ideal candidate is:

• Positive, energetic, and happy coming into the office.
• Naturally curious and enjoys breaking things to understand root causes.
• Adaptable, eager to learn, and comfortable in a fast-moving environment.
• Detail-oriented with a drive for quality and continuous improvement.
• A strong communicator who enjoys collaborating with cross-functional teams.

Services advertised by Gold Group are those of an Agency and/or an Employment Business.We will contact you within the next 14 days if you are selected for interview. For a copy of our privacy policy please visit our website.