Senior QA Engineer - Automation

About the Role

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.

Key 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.