Senior QA Engineer · SDET
Quality that's
never negotiable.
17+ years ensuring software works exactly as it should. Specialist in test automation across web, mobile, API, and performance — from healthcare to media at global scale.
experience
worked
increase
About me
I'm Carolina Olguin, a Senior QA Engineer with over 17 years of experience across a wide range of industries — including Healthcare, Retail, Gaming, IT, Entertainment, Finance, Aerospace, and Education. I've owned quality strategies at companies like Function Health, Buzzfeed, and Web.com — always keeping quality as a business enabler, never a bottleneck.
My strength lies in designing testing strategies that blend intelligent automation with deep technical exploration. I build frameworks from scratch, integrate AI-driven tools to reduce manual effort, and collaborate with stakeholders to define acceptance criteria from the start.
I hold the ISTQB CFTL certification. I'm continuously learning and staying current with the tools redefining modern QA engineering.
Tech Stack
Projects
ParaBank Project
Scalable end-to-end automation framework for the ParaBank demo site using Playwright and TypeScript. The design prioritizes scalability, reliability, and maintainability.
Reusable architecture for QA teams
Halo Challenge
Full E2E automation framework built on practice-automation.com. Features Cucumber HTML report generation, regression scenario design, and professional environment setup.
Code challenge · Cypress + Cucumber + HTML Report
Dice Distribution Validator Challenge
Technical code challenge solved with Selenium WebDriver and TestNG. Demonstrates Page Object Model pattern, test suite organization, and SDET best practices.
Code challenge · Selenium + TestNG
Web API Training
Java Web API training project from EducacionIT. Covers REST service consumption and testing fundamentals — foundational knowledge for backend API testing environments.
Experience
Owned quality strategy for healthcare software, reducing release regression time by measurable results. Implemented automated CI test suites that cut manual regression cycles and sped releases. Integrated AI-driven testing tools to reduce manual test effort and improve coverage. Collaborated with stakeholders to define acceptance criteria and clarify requirements.
Developed and implemented comprehensive quality assurance programs to guarantee products met safety and quality standards. Built automation frameworks from scratch, created automated test scripts to handle repetitive testing work, and documented testing procedures for developers and future use.
Managed automation activities and provided status to stakeholders on overall progress and completion. Increased test coverage by 25% through implementation of automated regression tests for critical user flows. Mentored automation engineers in best practices and adherence to overall testing strategy.
Operated under Scrum framework to complete releases and sprints. Developed accurate and efficient scripts to manage automated testing of products and features. Debugged code and located root causes of problems by reviewing configuration files and logs.
Consistently delivered quality code to a user base of more than 2.5M MAU on a weekly basis. Built and executed test suites for multiple applications that reduced overall testing effort by a factor of days. Collaborated with large-scale partners like Google on multiple projects (Tasty Google Home Hub). Routinely established defect severity and priority to streamline the internal process.
Conducted comprehensive testing for a banking system, enhancing reliability and user satisfaction. Developed detailed test case suites, ensuring thorough coverage and reducing defects. Collaborated with clients on-site, aligning project outcomes with customer expectations.
Appointed as main QA contact, handling all questions and issues from the customer. Recommended QA standards to management and trained IT juniors on testing. Developed automation scripts, reducing testing time and increasing accuracy across a variety of on-site and remote projects.
Conducted functional and interface testing for SOA applications, ensuring data integrity. Performed functional, component and interface testing and produced testing reports and documents for senior team members.
Performed functional testing alongside a globally distributed QA team. Trained junior QA team members, designed and updated automation scripts, and was responsible for executing multiple testing strategies for internal projects.
Recommendations
Carolina joined our team at Wizards of the Coast to augment QA and did solid work. She helped wrangle a large, flaky Playwright e2e suite for a business-critical system and brought a more structured approach to test reliability. She was also engaged with the broader engineering team, helping spread QA knowledge and practices beyond just her immediate role. If you're looking for a QA engineer who can hit the ground running and make a real impact, I'd recommend her.
Carolina is a great team player who is able to prioritize her tasks and work independently with minimal supervision. She is able to apply her experience and skills to create test cases with excellent coverage even when there is ambiguity in the requirement.
Carolina also assisted in the development of test automation scripts. She was able to learn the software quickly and work together with the rest of the team in producing scripts that follow the standard and guidelines.