Job description
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, 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
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**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: 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 [recruitment@onenergystorage.com](mailto:recruitment@onenergystorage.com)
- Benefits vary by role and location and are subject to change.
**Agency Notice:** 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 . No placement fees or compensation will be paid for unsolicited candidate submissions.
