Software Development Engineer in Test, Mattermost

• 3+ years of hands-on experience in automated and manual testing of modern web applications
• Proficiency with Playwright or similar E2E automation tools (e.g., Cypress, Selenium)
• Solid understanding of QA processes, including test planning, execution, and reporting
• Ability to assess technical changes and create effective unit and integration test strategies
• Experience working within cross-functional engineering teams in agile environments
• Excellent communication and documentation skills
• Applicants must meet eligibility requirements for access to export-controlled information as defined by U.S. export control laws, including EAR and ITAR

Desirable

• Mattermost is seeking a versatile and detail-oriented SDET (Software Development Engineer in Test) to support the delivery of high-impact, single-solution software components and plugins tailored to enterprise customer needs
• You will be embedded with our deployment engineering team, working on fast-turnaround projects that require robust quality assurance under tight timelines
• This role encompasses a mix of manual QA, unit testing, and end-to-end test automation, with an emphasis on delivering production-ready solutions in collaboration with engineers, product managers, and customers
• This is a full-time contractor role with the possibility of extension based on project needs and performance
• Design and maintain manual test plans and automation suites for plugins and specialized solutions
• Implement end-to-end tests using Playwright, covering real-world workflows and user interactions
• Validate unit-level functionality and contribute to automated test coverage in CI pipelines
• Perform manual testing of new features, regression testing for releases, and validation of bug fixes
• Review pull requests for QA implications and test coverage, and execute test cases accordingly
• File clear, detailed, and reproducible bug reports using GitHub and collaborate on resolution
• Participate in team standups and planning sessions to define QA scope and ensure alignment
• Help define and document the QA process, best practices, and future improvement areas
• Join deployment engineering team building plugins and tailored solutions for enterprise customers
• Ramp up on testing strategies, tools, and processes in Week 1
• Support both manual and automated testing from Weeks 2 through 6, with deliverables including test plans, bug reports, and submitted PRs for automation
• Contribute to defining a QA process playbook for future projects