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Integration QA Engineer
Leadex SystemsQA Engineer focusing on backend integration testing for a UK-based fintech project. Collaborating with cross-functional teams on API testing and integration validation.
Tech Stack
Tools & technologiesSOAPSQL
About the role
Key responsibilities & impact- Plan and execute complex test scenarios for API flows, focusing specifically on how our system interacts with external third-party providers.
- Validate data accuracy and transformation as it moves across various external services and the MuleSoft/Salesforce ecosystem.
- Perform deep-dive testing of REST/SOAP APIs, ensuring error handling, rate limiting, and edge cases for third-party integrations are robust.
- Identify, document, and track bottlenecks and bugs, working closely with MuleSoft developers and Salesforce architects to resolve integration gaps.
- Help design and refine the end-to-end testing strategy, including regression suites and integration workflows.
- Engage directly with UK-based client stakeholders to align on integration requirements and provide transparent reporting on quality metrics.
Requirements
What you’ll need- 3+ years of QA experience with a heavy focus on Back-end, System, and Integration testing.
- Proven track record of testing third-party service integrations (External APIs, Webhooks, etc.).
- Expert-level proficiency with Postman, SoapUI, or similar API testing tools.
- Strong SQL skills for data verification and backend state validation.
- Understanding of data security and the high stakes of financial transaction flows.
- Experience working on "zero-to-one" projects where processes need to be built, not just followed.
- Confident spoken English (B2+ level) for active participation in meetings with the British client.
- Familiarity with MuleSoft, Salesforce, or the UK Fintech ecosystem is a significant plus.
Benefits
Comp & perks- Flexible work schedule.
- 31 days of vacation.
- 5 sick days.
- Sport compensation.
- Support with purchasing the necessary equipment.
ATS Keywords
✓ Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Back-End TestingSystem TestingIntegration TestingData VerificationError Handling
Soft Skills
Confident Spoken English