Senior QA Engineer

About the role

Working at Tech Holding isn't just a job, it's an opportunity to be a part of something bigger. We are a full-service consulting firm that was founded on the premise of delivering predictable outcomes and high-quality solutions to our clients. Our founders and team members have industry experience and have held senior positions in a wide variety of companies - from emerging startups to large Fortune 50 firms - and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability. We are looking for a Senior QA Engineer (SDET) to support a critical automation projects. This role will focus on API testing, automation, and end-to-end quality assurance across the transaction lifecycle.

Responsibilities

• API Testing
• Perform API testing for integrations using tools like Postman / REST clients .
• Test routing logic.
• Test Automation & Quality Engineering
• Extend and maintain automated test suites workflows and APIs.
• Build API automation frameworks (using JavaScript, Java, or Python).
• Integrate automated tests into CI/CD pipelines for continuous validation.
• Functional & Edge Case Validation
• Test success, failure, and edge-case scenarios (timeouts, retries, duplicate transactions).
• Validate idempotency and error handling mechanisms .
• Perform exploratory and manual testing for complex workflows.
• Data Validation & Reconciliation
• Validate transaction data across APIs and databases .
• Write and execute SQL queries for backend validation.
• Performance & Reliability Testing
• Conduct basic load and performance testing for payment APIs.
• Validate system behaviour under high transaction volume .
• Monitor and report latency, failure rates, and retries .
• Production Rollout & Monitoring
• Support production deployment validation and pilot rollout.
• Monitor transaction success rates and error logs post-release.
• Collaborate on issue triaging and quick resolution .

Requirements

• 5+ years of QA experience with strong focus on API and backend testing .
• Hands-on experience with API testing tools (Postman, REST Assured, etc.).
• Good to have experience with Playwright
• Experience in test automation using JavaScript, Java, or Python .
• Experience with SQL and database validation .
• Knowledge of CI/CD pipelines and automation integration.
• Understanding of HTTP protocols, REST APIs, and JSON .
• Familiarity with error handling, retries, and distributed system behaviors .
• Strong analytical, debugging, and problem-solving skills.
• Good to Have
• Experience with performance testing tools (JMeter, k6, etc.).
• Exposure to Agile/Scrum methodologies .

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Company Intel

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