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Juan Leites

@juanleites

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QA Engineer at Technisys, testing core banking APIs and building Playwright E2E and API test suites.

Uruguay

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At Technisys, I tested REST APIs and backend services for a core banking platform, using Postman and SQL to validate payloads, error handling, and data consistency across integrations. I also coordinated backlog work and Agile ceremonies within a cross-functional squad.

At Overactive, I owned the QA process as the sole tester, from test planning through release sign-off, and tested web and mobile applications. I'm now expanding into automation through Playwright E2E and API test suites built for my self-developed Node.js web application.

Experience

Work history, roles, and key accomplishments

QA Engineer

Technisys (Galileo Financial Technologies)

Jan 2020 - Jan 2025 (5 years)

Tested REST APIs and backend services of a core banking platform using Postman and SQL, validating payloads, error handling, and data consistency. Coordinated team workflow in a cross-functional squad, including backlog management and Agile ceremonies.

Postman SQL REST API Testing Agile Backlog Management SDLC

QA Engineer (Sole QA)

Overactive (now Perficient)

Aug 2018 - Jan 2020 (1 year 5 months)

Owned the entire QA process as the only tester on the project, including test planning, prioritization, execution, and release sign-off. Acted as QA point of contact with the client, conducting status meetings and producing client-facing test documentation.

Test Planning Test Execution Regression Testing E2E Testing Mobile Testing Client Communication

QA Engineer

Ascentis (now UKG)

Nov 2017 - Aug 2018 (9 months)

Tested frontend and backend features of an HCM web platform within a Scrum team. Gained first hands-on exposure to API testing and test automation, working closely with developers.

API Testing Testing Automation Scrum Front end Testing Backend Testing

QA Engineer

Tata Consultancy Services (TCS)

Jun 2012 - Sep 2017 (5 years 3 months)

Designed, executed, and documented test cases for enterprise web applications, focusing on functional and regression testing. Built core QA foundations including requirements analysis, defect reporting, and root cause analysis in Jira.

Test Case Design Functional Testing Regression Testing Jira Defect Reporting Root Cause Analysis