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Senior Test Automation Engineer (Python, API / Backend)
UK – Hybrid / Remote | Permanent

We are recruiting for a Senior Test Automation Engineer to join an engineering team working on large-scale backend platforms and SDKs. This role is heavily focused on API testing and Python-based automation and is suited to experienced engineers with a strong technical QA background.

This is not a UI-focused or manual QA role.

Responsibilities

Design, implement, and execute automated and manual tests for backend systems and APIs

Analyse requirements and produce detailed test plans and test cases

Maintain and extend an existing Python-based automation framework

Develop and execute API and SDK tests, including regression, negative, and backward-compatibility testing

Identify, log, and verify defects and work closely with engineers to resolve issues

Contribute to quality, reliability, and testability improvements across the platform

Test applications deployed in cloud environments

Requirements

Significant experience in test automation within a software engineering environment

Strong experience testing APIs and backend services

Hands-on experience writing automation in Python

Experience with Java, JSON, XML, and web services

Comfortable working in a Linux development environment

Strong troubleshooting skills across both black-box and white-box testing

Solid understanding of authentication and authorisation mechanisms

Experience using source control and defect tracking tools

Experience with commerce, payments, or financial systems is advantageous

Degree in Computer Science or a related field preferred

Right to Work

Applicants must have the legal right to work in the United Kingdom without the requirement for visa sponsorship now or in the future. Unfortunately, sponsorship is not available for this role.

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