Senior Test Analyst - API Tester
Posted 18 hours 7 minutes ago by Cognizant
£60,000 - £80,000 Annual
Permanent
Full Time
Other
London, United Kingdom
Job Description
Job Summary 
We are seeking an experienced Senior Test Analyst to support a large-scale API Management migration from Apigee to Kong APIM. This role is critical to ensuring API quality, security and performance throughout the migration lifecycle with a strong focus on validating functional parity, nonfunctional requirements and consumer impact.
Responsibilities- Analyse existing Apigee API proxies and policies to define test scenarios for Kong APIM equivalents;
- Design and execute functional integration and regression testing for migrated APIs;
- Validate API contracts request and response transformations, headers, error handling and versioning;
- Test security controls including OAuth 2.0, JWT, mTLS and API key authentication;
- Validate traffic management policies such as rate limiting, throttling, quotas and retries;
- Conduct non functional testing including performance, scalability and resilience;
- Support parallel run cutover and go live testing to minimise service disruption;
- Manage defects end to end working closely with development and platform teams;
- Produce clear test evidence reports and quality metrics to support release decisions.
ISTQB
Cog2025