[Hiring] Senior QA Automation Engineer @Nucleus Security

Role Description

We are seeking a detail-oriented and proactive QA Automation Engineer to join our team. This role is responsible for ensuring the quality, reliability, and performance of our applications through a combination of manual and automated testing across front-end and back-end systems. The ideal candidate is passionate about software quality, enjoys working in a collaborative environment, and is motivated to improve testing processes, tools, and automation coverage.

Core Responsibilities

• Ensure the quality and reliability of assigned products across the full stack — UI, APIs, and data.
• Build, extend, and improve scalable automation frameworks in Selenium and Playwright.
• Act as a quality advocate within the team — reviewing test code and sharing testing practices.
• Plan and execute test coverage for complex, cross-system features.
• Design and execute manual and automated test cases covering functionality, performance, and reliability.
• Assess risk and prioritize testing effort, making clear recommendations.
• Map test cases to business requirements and functional designs.
• Investigate complex or intermittent failures to root cause.
• Document and report defects, verify fixes, and ensure timely resolution.
• Write and execute complex SQL queries to validate data integrity.
• Verify data accuracy through ingestion, normalization, and processing workflows.
• Validate database interactions triggered by UI and API operations.
• Build and maintain reusable test data sets and database setup routines.
• Implement and review automated test scripts using Java with Selenium WebDriver and Playwright.
• Contribute to the architecture and long-term health of automation frameworks.
• Incorporate database validation into automated suites.
• Improve automation reliability by reducing flakiness and execution time.
• Integrate automated tests into CI/CD pipelines.
• Support performance and scale testing.
• Hands-on experience using AI tools for test case generation and defect analysis.
• Partner with the QA Manager, developers, and product managers to clarify requirements.
• Support and mentor less experienced QA engineers.
• Participate in design reviews and technical discussions.
• Contribute to continuous improvement of QA processes, tools, and standards.

Qualifications

• 8+ years in software quality assurance, with at least 5 years in test automation.
• Strong programming skills in Java.
• Hands-on experience with Selenium WebDriver and Playwright.
• Experience contributing to the design or significant refactoring of an automation framework.
• Solid API testing experience and strong SQL skills.
• Working knowledge of CI/CD tooling and version control.
• Strong analytical and debugging skills.

Preferred (Nice to Have)

• Experience working in cybersecurity, vulnerability management, or security-focused products.
• Familiarity with security concepts such as vulnerabilities and risk scoring.
• Experience with MCP servers or agent-based testing workflows.
• Experience testing ETL or data pipelines.
• Experience with performance or load testing, cloud environments, or containerized test infrastructure.

Common Skills & Traits

• Self-starter with a strong ownership mindset.
• Strong problem-solving and collaboration skills.
• Ability to quickly learn new tools, technologies, and frameworks.
• Willingness to fail fast, iterate, and improve.

Benefits

• Fully remote.
• Flexible PTO.
• 401k company contribution.
• 100% company-paid healthcare options.
• 100% company-paid dental.
• 100% company-paid vision.
• 100% company-paid life insurance.
• 100% company-paid short-term disability insurance.
• And more!

Additional Information

At Nucleus we are committed to achieving excellence in our field by combining diversity, collaboration, teamwork, and pride in our work. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, protected veteran status, or disability.