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