Oswaldo Arana

Full Stack QA Engineer with 11+ years of experience delivering quality engineering solutions across the full SDLC for web and mobile platforms. Strong expertise in test automation architecture, functional validation, and quality strategy within Agile environments. Proven track record designing scalable automation frameworks, improving regression coverage, and partnering closely with engineering teams to ensure reliable, high-quality releases.

Experienced working in enterprise and regulated environments, collaborating with distributed, multicultural teams.

Software Engineer in Test at Kueski (2021-10 – 2024-10)

• Designed, implemented, and maintained end-to-end automation frameworks for web and mobile applications using Selenium and Appium.
• Led 9 automation initiatives, owning regression strategy, execution stability, and maintenance.
• Expanded automated coverage by 40+ test cases, strengthening release confidence.
• Integrated automation into CI/CD pipelines, improving execution reliability and feedback cycles.
• Performed advanced functional, regression, compatibility, and UI validation.
• Conducted database and API-level validations (SQL queries, HTTP responses).
• Collaborated closely with developers to identify, document, and resolve defects, including UI-level fixes.
• Produced clear test reports and technical documentation for automation suites.
• Worked in a multicultural Agile environment, managing work through Jira.
• Contributed to 70+ code merges across automation repositories.
• Actively upskilled through ISTQB training and JavaScript development.

Parental Leave at Career Break / Sabbatical (2024-10 – 2025-10)

• Took a planned sabbatical to assume full-time parental responsibilities as a single father.
• Maintained technical readiness through continuous learning and skill refreshment in QA automation and industry best practices.
• Returning to the workforce with renewed focus, long-term availability, and strong professional commitment.

Software Engineer in Test at EPAM Systems (2018-10 – 2021-10)

• Developed and maintained automation solutions for web and mobile platforms using Selenium and Appium.
• Enhanced existing frameworks to improve stability, scalability, and reusability.
• Automated 40+ test cases and supported multiple concurrent automation streams.
• Executed functional, regression, and cross-browser testing.
• Performed HTTP-level validations and crawler-based testing.
• Collaborated in distributed Agile teams, ensuring alignment between QA and development.
• Participated in ISTQB and JavaScript technical training.

Mobile Automation Tester at Propelics (2016-03 – 2017-03)

• Designed and executed mobile test strategies based on business and functional requirements.
• Automated mobile testing using Soasta, Perfecto Mobile, Selenium, and Appium.
• Implemented BDD-based automation with Cucumber.
• Validated mobile UI/UX across multiple devices and screen resolutions.
• Debugged network and performance issues using Charles Proxy.
• Managed the defect lifecycle using Jira and Yodiz.
• Acted as Test Coordinator, supporting planning, execution, and reporting.

Test Specialist – Automation at IBM (2013-09 – 2016-03)

• Delivered QA solutions for SAP and web-based enterprise applications.
• Managed the full test lifecycle, from design to execution and closure.
• Built custom automation frameworks using Java and Selenium, including data-driven approaches.
• Executed performance testing with Rational Performance Tester.
• Applied Combinatorial Test Design (CTD) to optimize coverage.
• Trained and mentored junior testers on automation and IBM QA methodologies.
• Provided QA support to external and cross-project teams.
• Served as technical interviewer for QA roles.

Tester & IT Support at Aceros Murillo (2013-05 – 2013-09)

• Provided IT support and validation of defect fixes across internal systems and networks.

Bachelor's Degree in Computer Systems Engineering (Software) – Universidad del Valle de México