This is a remote position. Job Description – Manual Tester: Windows (Desktop Application) Employment Details Employment Term: Full-Time (Fixed) Work Schedule: 8:00 AM – 5:00 PM US Central Time (1hour break) Weekends: Saturday & Sunday Work Setup: Remote (BYOD) Role Overview We are looking for someone with solid manual testing skill to test the productivity desktop apps built on .NET for Windows (10/11). You'll work closely with our client's product and engineering teams to ensure agentic AI desktop product works flawlessly on Windows. Required Skills 4+ years manual testing experience of desktop applications Access to Windows (10/11) machines for testing Derive new test cases from product specs, UI walkthroughs, or hands-on exploration. Produce structured CSV/spreadsheet formats with clear test descriptions, steps, expected outcomes, and pass/fail criteria Refine AI-drafted test plans by removing redundancies, adding edge cases, sharpening expected outcomes, and restructuring cases. You'll lead this refinement. Clear bug write-ups with precise reproduction steps, severity classification, screenshots, and log capture Comfort with complex UI patterns: multi-window interfaces, drag-and-drop, modal dialogs, system tray/menu bar behavior, and installer flows Platform-specific knowledge in Windows Shell Extensions, registry, NSIS installers MS365 / Outlook familiarity—integrating experience with both Outlook Classic and modern Outlook Strong written English; proficiency with Microsoft Teams and GitLab for collaboration and issue tracking Nice to Have Microsoft Entra / OAuth sign-in flow testing AI / LLM chat product testing Installer validation (NSIS on Windows) What We Provide Test accounts, sample data, and direct access to the dev team for clarifications A small, product-driven team where your work directly impacts the product Remote flexibility with a team based worldwide