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I am a results-driven QA leader with 13+ years of hands-on experience across web, mobile, and API-driven applications. I design and maintain robust automation suites using Cypress and Selenium, and I integrate tests into CI/CD pipelines with Jenkins and GitHub Actions to support rapid and reliable releases. I excel at exploratory testing, data validation, and regression automation, and I am passionate about building clear test documentation and bug reports in Jira and Linear. I thrive in distributed teams, mentor junior testers, and partner with product and engineering teams to ensure high-quality releases.…I am a results-driven QA leader with 13+ years of hands-on experience across web, mobile, and API-driven applications. I design and maintain robust automation suites using Cypress and Selenium, and I integrate tests into CI/CD pipelines with Jenkins and GitHub Actions to support rapid and reliable releases. I excel at exploratory testing, data validation, and regression automation, and I am passionate about building clear test documentation and bug reports in Jira and Linear. I thrive in distributed teams, mentor junior testers, and partner with product and engineering teams to ensure high-quality releases.

Daniel Mestas

QA Engineer, Front-End Developer, Back-End Developer, +7

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I am a results-driven QA leader with 13+ years of hands-on experience across web, mobile, and API-driven applications. I design and maintain robust automation suites using Cypress and Selenium, and I integrate tests into CI/CD pipelines with Jenkins and GitHub Actions to support rapid and reliable releases. I excel at exploratory testing, data validation, and regression automation, and I am passionate about building clear test documentation and bug reports in Jira and Linear. I thrive in distributed teams, mentor junior testers, and partner with product and engineering teams to ensure high-quality releases.…I am a results-driven QA leader with 13+ years of hands-on experience across web, mobile, and API-driven applications. I design and maintain robust automation suites using Cypress and Selenium, and I integrate tests into CI/CD pipelines with Jenkins and GitHub Actions to support rapid and reliable releases. I excel at exploratory testing, data validation, and regression automation, and I am passionate about building clear test documentation and bug reports in Jira and Linear. I thrive in distributed teams, mentor junior testers, and partner with product and engineering teams to ensure high-quality releases.

Available to hire

I am a results-driven QA leader with 13+ years of hands-on experience across web, mobile, and API-driven applications. I design and maintain robust automation suites using Cypress and Selenium, and I integrate tests into CI/CD pipelines with Jenkins and GitHub Actions to support rapid and reliable releases.

I excel at exploratory testing, data validation, and regression automation, and I am passionate about building clear test documentation and bug reports in Jira and Linear. I thrive in distributed teams, mentor junior testers, and partner with product and engineering teams to ensure high-quality releases.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Japanese

Beginner

Work Experience

QA Freelancer / Contractor at Various Clients

March 1, 2025 - September 1, 2025

Performed manual and automated testing for multiple web and mobile applications across e-commerce, finance, and SaaS clients; designed test plans and regression suites; built automation with Cypress, Selenium, and Postman; integrated automated tests into CI/CD pipelines (Jenkins, GitHub Actions); mentored junior QA testers.

Quality Assurance IV / SQA Engineer at S&P Global (formerly IHS Markit)

September 1, 2014 - March 1, 2025

Led QA efforts for enterprise financial services platforms with responsibility for web and mobile interfaces, backend data accuracy, and platform reliability; developed and executed manual and automated test plans (Cypress, Selenium, Postman) and Jira; performed exploratory testing and API validation; validated builds and deployments in CI/CD pipelines; mentored junior testers and offshore teams.

Founder & Managing Director at Eliv8 MD

July 1, 2016 - April 1, 2024

Built and led a team of 8, managing operations across product development, sales, marketing, and customer care; formed strategic partnerships and managed cross-functional workflows to improve product quality and user experience.

Senior Test Engineer at SDL International

November 1, 2009 - July 1, 2014

Managed an offshore QA team of 20+ engineers for enterprise localization projects; built test environments; led defect tracking and documentation to support testing and QA processes.