Senior Test Automation Engineer (Python, API, Linux - Billing / Rating
2 Days Old
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)
- Location:
- Linton
- Salary:
- £45,000 - £53,000 /annum
- Job Type:
- FullTime
- Category:
- IT