Quality Assurance Engineer - Automation

ON.energy is building the backbone of energy and AI infrastructure powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges, delivering custom solutions for AI data centers, mission-critical facilities, and front-of-the-meter assets. ON recently announced a 5GW partnership, with 3GW currently under construction across multiple hyperscale data center campuses. With patented technology and proprietary software, ON.energy develops projects worldwide that set new benchmarks for resilience.

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

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.
• Accommodations: If you need an accommodation during the application process, email [email protected]
• 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.