Senior Test Automation Engineer (Python, API, Linux - Billing / Rating

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Hudson Shribman

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Hudson Shribman

Senior Test Automation Engineer (Python, API, Linux - Billing / Rating

£45,000

£53,000

Cambridge

Hybrid

Graduate

Junior

Mid

Senior

Leader

Description

Senior Test Automation Engineer (Python, API, Linux – Billing / Rating Systems) UK – Remote / Hybrid | Permanent We are recruiting a Senior Test Automation Engineer to join an engineering team building large-scale backend platforms used for billing, rating, and high-volume transaction processing across telecoms and financial-grade systems. This is a backend-focused automation role centred on Python, APIs, and Linux environments. It is not a UI automation role and not a manual QA position. Responsibilities Design, build, and maintain Python-based automation frameworks for backend services Develop and execute automated tests for APIs and service integrations Create coverage for regression, negative, and backward-compatibility scenarios Analyse requirements and define test strategies and test plans for complex backend systems Investigate failures using logs, metrics, and debugging tools in Linux environments Work closely with engineers to identify root causes and improve testability and reliability Support testing of systems deployed in cloud and distributed environments Essential Experience Strong, hands-on experience in Python test automation Proven background testing backend services and APIs Confident working in Linux environments (CLI, logs, troubleshooting) Experience testing billing, rating, charging, payments, or financial transaction systems Solid understanding of authentication and authorisation (OAuth2, JWT, API keys, etc.) Experience with CI/CD pipelines, version control, and defect tracking tools Desirable Experience Telecoms platforms (charging, mediation, invoicing) SDK testing and contract testing Performance or load testing exposure Containers and cloud platforms (Docker, Kubernetes, AWS/Azure/GCP) This role is not suitable for: UI automation–focused profiles (e.g. Selenium/Cypress-first) Manual-only QA roles SCADA, hardware, or control-systems testing backgrounds Right to Work Applicants must have the legal right to work in the United Kingdom without visa sponsorship now or in the future. Unfortunately, sponsorship is not available for this role Apply to (url removed)