QA Test Engineer
Northampton (2-3 days onsite)
Duration: 6 months initially
£400 per day inside IR35 - umbrella only
Key Responsibilities
* Perform manual and automated testing of REST APIs, decisioning components, and integration workflows.
* Conduct JSON schema validation, payload structure checks, and API contract verification.
* Review and validate API documentation using Swagger / OpenAPI specifications.
* Develop Python scripts for simulation, automation, and data validation.
* Prepare and maintain test plans, test cases, and use cases.
* Validate decision strategy outputs, API request/response mappings, and ODS data.
* Log and track defects in JIRA and prepare XRAY execution reports.
* Work closely with dev, BA, and strategy teams to ensure high?quality deliverables.
* Participate in Agile ceremonies and support performance/monitoring activities where required.
Core Skills
* Testing: Manual, REST API, Automation
* Technologies: JSON, JSON Schema, Swagger/OpenAPI
* Tools: Python, Karate, Excel, LoadRunner, Insomnia/Bruno
* CI/CD: GitLab, Jenkins
* Monitoring: Kibana, AppDynamics
* Concepts: SDLC, TDD, OAuth, Authentication/Authorization, Tokenization/Detokenization
* Good to have experience around Experian Strategy Manager validation, Experian Open Data Platform validation
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