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Uzziel Sierra

@uzzielsierra

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Results-driven Senior Quality Assurance Engineer with extensive testing experience.

United States

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What I'm looking for

I am looking for a role that values collaboration and innovation, offering opportunities for growth and the chance to drive quality in software development.

I am a Senior Quality Assurance Engineer with over 9 years of experience in testing high-traffic web applications across various sectors, including e-commerce and digital media. My expertise lies in improving test efficiency and reducing defect rates by up to 35% through robust manual and automated testing strategies. I specialize in UI automation using Robot Framework with Selenium WebDriver and Python, and I have hands-on experience with Playwright, Cypress, and API testing using Postman.

Throughout my career, I have been recognized for my strong leadership and mentorship abilities, as well as my proactive QA mindset. I excel in cross-functional collaboration and have successfully executed QA processes throughout the entire Software Development Life Cycle (SDLC). My experience includes working in Agile/Scrum teams, where I make confident, risk-based QA decisions to ensure product quality and business success. I am passionate about fostering a culture of continuous improvement and driving QA excellence.

Experience

Work history, roles, and key accomplishments

Senior Quality Assurance Engineer

Rightpoint Consulting LLC

Oct 2020 - Jun 2025 (4 years 8 months)

Led QA for e-commerce platforms and sports tech at Rightpoint. Validated AEM content, ran smoke tests, and tested APIs with Postman. Contributed to launches, migrations, and frontend testing for AB InBev. Performed ADA, cross-browser, and performance testing. Explored Cypress and tested Magento, Shopify, and BigCommerce sites.

Quality Assurance Manual Testing Automated Testing API Testing Cypress Robot Framework Selenium Jira BrowserStack Magento BigCommerce Shopify Next.js React Playwright Axe Lighthouse Wave2

Functional & Test Automation Engineer

Something Digital

Jul 2019 - Oct 2020 (1 year 3 months)

Automated smoke and regression tests using Robot Framework, Selenium, and Python for e-commerce flows. Contributed to the migration from Magento to React/Next.js. Integrated tests into Azure DevOps pipelines, managed 300+ test cases, triaged 250+ Jira bugs, and collaborated across Agile teams.

Test Automation Robot Framework Selenium Azure DevOps CI CD Jira Python Git Agile Regression Testing

QA Analyst

Intellisys D. Corp

Mar 2016 - Nov 2018 (2 years 8 months)

Built automated tests with Robot Framework (Selenium + Python) and integrated them into Jenkins pipelines for high-traffic media platforms like Condé Nast. Conducted ADA audits, API testing, and manual/automated validation across redesigns, migrations, and production releases.