Principal Test Engineer

Description Duties: Lead development of system testing strategies, test plans, test cases and test conditions and oversee testing across multiple environments and enforce QA standards and best practices.Design, enhance and institutionalize test engineering procedures and standards; define, implement and report on test metrics to measure application quality and delivery risk.Champion shift-left testing practices (TDD/BDD, white-box/gray-box testing, code coverage, static analysis, service virtualization) to detect defects earlier and improve code quality. Lead and manage complex projects and subprojects: create project plans, assign tasks, estimate effort, manage QA activities to plan and coordinate cross-functional teams in onsite–offshore delivery models. Drive automation strategy and implementation across Java and TypeScript stacks; integrate automated tests (unit, API, end-to-end, regression, smoke) into CI/CD pipelines and pipeline gating. Own performance, load and scalability testing initiatives and perform holistic system-level analysis to identify bottlenecks and remediation actions. Establish and manage test data management, environment virtualization and security testing initiatives to support reliable and repeatable testing across sprints. Lead defect triage processes and collaborate with development and product teams to prioritize and resolve issues. Provide expert guidance on testing systems, processes and methodologies to clients, IT management and project teams throughout the full project lifecycle. Mentor and coach QA engineers; build team capabilities, promote knowledge sharing and improve technical depth across teams. Communicate test progress, quality status, risks and metrics regularly to senior stakeholders and product owners; prepare stakeholder presentations and status reports.Position requires domestic travel up to 10%. Telecommuting permitted up to 60%. Qualifications Requirements: Employer will accept a Bachelor’s degree (or foreign equivalent) in Computer Science, Software Engineering or related field and eight (8) years of experience in the job offered or in a Principal Test Engineer-related occupation. Alternatively, employer will accept a Master’s degree (or foreign equivalent) in Computer Science, Software Engineering or related field and five (5) years of experience in the job offered or in a Principal Test Engineer-related occupation.Position requires demonstrable experience in the following:1. Programming in Java (Java 8+) and TypeScript and experience with Node.js runtime and ecosystem. 2. Designing and implementing automated testing strategies across Java and TypeScript stacks, including unit, integration, API, end-to-end, regression and UAT. 3. Utilizing TypeScript, JavaScript, and Java test frameworks and tools. 4. Automating API and service tests. 5. Integrating automated tests into CI/CD pipelines using GitHub Actions. 6. Experience with build and deploy automation and pipeline gating. 7. Utilizing APM tooling including Splunk and DataDog to support testdriven performance troubleshooting. 8. Testing management and collaboration tools such as JIRA, Confluence and Git-based source control including GitHub or equivalent. 9. Mentoring and coaching junior engineers through defining QA processes and metrics and communicating testing status and risk to technical and non-technical stakeholders. 10. Working effectively in Agile and DevOps teams to drive shift-left testing practices including TDD and BDD, white-box and gray-box testing, code coverage and static analysis.Experience may be gained during graduate program. Will accept any suitable combination of education, training, and/or experience. Multiple Positions Available. REFER TO: To apply, please visit select “Search Jobs,” enter job requisition #2026-XXXXX in the “Job ID or Keywords” field, and submit resume. Alternatively, you may apply by submitting a resume via e-mail to View email address on click.appcast.io. Reference requisition number in subject of e-mail. About Us Pay Philosophy: The typical starting salary range for this role is determined by a number of factors including skills, experience, education, certifications and location. The full salary range for this role reflects the competitive labor market value for all employees in these positions across the national market and provides an opportunity to progress as employees grow and develop within the role. Some roles at Liberty Mutual have a corresponding compensation plan which may include commission and/or bonus earnings at rates that vary based on multiple factors set forth in the compensation plan for the role.At Liberty Mutual, our goal is to create a workplace where everyone feels valued, supported, and can thrive. We build an environment that welcomes a wide range of perspectives and experiences, with inclusion embedded in every aspect of our culture and reflected in everyday interactions. This comes to life through comprehensive benefits, workplace flexibility, professional development opportunities, and a host of opportunities provided through our Employee Resource Groups. Each employee plays a role in creating our inclusive culture, which supports every individual to do their best work. Together, we cultivate a community where everyone can make a meaningful impact for our business, our customers, and the communities we serve.We value your hard work, integrity and commitment to make things better, and we put people first by offering you benefits that support your life and well-being. To learn more about our benefit offerings please visit: Liberty Mutual is an equal opportunity employer. We will not tolerate discrimination on the basis of race, color, national origin, sex, sexual orientation, gender identity, religion, age, disability, veteran's status, pregnancy, genetic information or on any basis prohibited by federal, state or local law.Fair Chance NoticesCaliforniaLos Angeles IncorporatedLos Angeles UnincorporatedPhiladelphiaSan FranciscoJob SummaryID: 2026-114608Position Type: Full-TimeMinimum Salary: USD $120,000.00/Yr.Maximum Salary: USD $211,000.00/Yr.Flexible Time Off Annual Accrual - days: 20