Saikat Rajguru

QA Automation Engineer with 4.5+ years of experience testing banking and payment applications. Experienced in Selenium, Playwright, REST API testing, SQL, and CI/CD pipelines, with hands-on expertise in ISO 20022 payment systems, backend validation, and release management. Proven track record of owning end-to-end feature testing, mentoring junior engineers, and delivering reliable automation solutions in Agile environments.

Test Engineer - Barclays - Pune, India

(2022-10)

• Owned end-to-end testing for assigned features, including requirement analysis, test planning, automation development, execution, defect management, production validation, and release support.
• Designed, enhanced, and maintained a reusable Selenium/Cucumber BDD automation framework for functional, regression, backend, and API testing across banking and payment applications.
• Validated REST APIs and middleware services using REST Assured and Postman, ensuring reliable communication across backend systems.
• Performed SQL validations to verify financial transactions, stored procedures, and backend data integrity throughout the payment lifecycle.
• Tested ISO 20022 and SEPA payment workflows involving PACS and CAMT messages using IBM MQ and Kafka, validating XML message structures, message routing, and settlement processes.
• Developed and maintained GitLab CI/CD pipeline YAML configurations, integrating automated regression suites into deployment pipelines.
• Configured parallel test execution and automated reporting, reducing regression execution time by approximately 30% during release validation.
• Investigated and resolved CI/CD pipeline failures, automation issues, and environment-related problems to improve pipeline stability.
• Reviewed automation pull requests to maintain framework quality, improve code consistency, and promote automation best practices across the QA team.
• Mentored junior QA engineers on automation development, debugging techniques, and framework standards.
• Coordinated release validation with developers, architects, and DevOps teams, ensuring successful deployments and timely production sign-offs.
• Expanded automation coverage for critical banking workflows, reducing manual regression effort by approximately 2–3 days per release, and used GitHub Copilot to improve automation development productivity by approximately 20–25%.

Quality Assurance Engineer - Cognizant Technology Solutions - Chennai, India

(2021-08 - 2022-09)

• Performed functional and regression testing across multiple Agile sprint releases, identifying critical defects before production deployments.
• Developed Selenium automation scripts for regression scenarios and supported Appium-based mobile application testing.
• Executed SQL validations and Postman API testing to verify backend functionality, reducing manual verification effort across application modules.
• Integrated automated smoke tests into Jenkins pipelines to support reliable sprint deliveries and faster release validation.
• Collaborated with developers and business analysts to analyze defects, validate fixes, and ensure application quality throughout the software development lifecycle.

B.Tech - Electronics & Electrical Engineering - KIIT University (2017 - 2021) Bhubaneswar, India