Harvey Nash are delighted to be recruiting for a cutting-edge AI security tech company revolutionising aviation safety. We're looking for a Senior Tester/QA Engineer to lead their QA efforts across global deployments. This is a high-impact, hands-on role where you'll design and execute test strategies for AI/ML systems in regulated environments. While the company can offer some hybrid working there will be times during roll outs you will be expected on site 5 days per week. Please only apply if you can commit to this regularly. What You’ll Do: Lead end-to-end test planning, automation, and execution across internal and external stakeholders. Validate AI/ML models, hardware/software pipelines, and system performance. Build scalable test infrastructure and integrate with CI/CD and DevSecOps workflows. Conduct global on-site testing and regulatory demonstrations. What You’ll Bring: Strong background in QA/Test Engineering with automation expertise (Python, Pytest, etc.). Experience with Linux, Kubernetes, cloud (AWS), and large-scale data testing. Familiarity with AI/ML validation and performance profiling. A proactive, structured approach and willingness to travel internationally occasionally. This role is offering a salary of up to £120,000 bonus. Please apply now to be considered.