Quality Assurance Engineer - Automation

ON.energy is setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center. With multiple gigawatts currently under construction, we are enabling grid-safe data centers. Job Summary We are looking for a QA Engineer with strong Python skills and hands-on experience in UI automation (Playwright, Selenium) to design, build, and maintain automated test suites. You'll work closely with developers and product teams to ensure high-quality releases through a mix of automated and manual testing practices. Key Responsibilities Design, develop, and maintain automated UI test scripts using Playwright and/or Selenium with Python Build and maintain a scalable test automation framework (Page Object Model or similar design patterns) Perform API testing (using Postman, requests library, or REST Assured) to validate backend functionality Integrate automated tests into CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI, Azure DevOps) Identify, log, and track defects through resolution using tools like JIRA Analyze test results, debug failures, and maintain test stability (handling flaky tests, waits, synchronization issues) Collaborate with developers and product owners to understand requirements and define test strategy/coverage Participate in Agile/Scrum ceremonies (sprint planning, stand-ups, retrospectives) Maintain test documentation — test plans, test cases, and automation coverage reports Contribute to code reviews of test scripts and automation framework improvements Required Skills & Qualifications 3–5 years of QA experience with a strong focus on automation Proficient in Python for test scripting Hands-on experience with Playwright and/or Selenium WebDriver Solid understanding of SDLC, STLC, and QA methodologies (manual + automated) Experience with test management/bug tracking tools (JIRA, TestRail, Zephyr) Familiarity with version control and CI/CD pipelines Experience with API testing tools/libraries (Postman, requests, REST Assured) Strong understanding of test design techniques (boundary value analysis, equivalence partitioning, etc.) Good analytical, debugging, and communication skills Preferred/Nice-to-Have Experience with pytest or unittest frameworks Exposure to Docker/containerized test environments Experience with BDD frameworks (Behave, pytest-bdd, Cucumber) ISTQB certification Basic SQL/database validations Note: This position may include 20% annual business travel #LI-AD1 For US-based roles - What you’ll get: Competitive salary + annual performance-based bonus eligibility Medical, dental, and vision insurance 401(k) with company match Paid time off and company holidays For Mexico-based roles - What you’ll get: Competitive salary + annual performance bonus eligibility Christmas Bonus (Aguinaldo): 30 days Major medical expenses and life insurance Paid time off and holidays (per local policy) For all roles: Professional development and growth opportunities Opportunity to grow with a mission-driven team shaping the future of clean energy Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation. Benefits vary by role and location and are subject to change. Agency Notice: ON.energy does not accept unsolicited resumes from staffing agencies, search firms, or third-party recruiters. Resumes submitted without a fully executed Master Services Agreement (MSA) and a written request from an authorized member of our Talent Acquisition team will be considered the property of ON.energy. No placement fees or compensation will be paid for unsolicited candidate submissions.