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Khristian GuimaraesKG
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Khristian Guimaraes

@khristianguimaraes

Senior QA Engineer at The Guarantors, validating transaction flows across UI, APIs, databases, and logs.

Brazil
Message

At The Guarantors, I develop and execute automated UI tests with Playwright and validate REST APIs, business rules, and integrations across the UI, APIs, and databases.

I use Datadog for log validation and troubleshooting, and AI-assisted workflows to improve debugging efficiency.

Before The Guarantors, I worked on Wipro's Mastercard project, testing a global financial transaction system and validating complex merchant and cash transaction flows.

At Wipro, I used SQL for data validation, reconciliation, and integrity checks, tested APIs with Postman, and validated backend processes using batch processing and Linux servers.

Experience

Work history, roles, and key accomplishments

Wipro logoWI

Senior QA Manual & Automation Engineer

Aug 2018 - Jun 2025 (6 years 10 months)

Executed manual, integration, and data testing in a global financial transaction system, validating complex merchant and cash transaction flows. Performed advanced SQL queries for data validation and reconciliation, and conducted API testing using Postman.

Education

Degrees, certifications, and relevant coursework

OU

Opet University

Bachelor's Degree, Systems Analysis and Development

2016 - 2018

Pursued a degree in Systems Analysis and Development from 2016 to 2018.

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