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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Developer in Test - **Company:** OPUS IVS Inc - **Location:** Dexter, MI, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Application Programming Interfaces (APIs), Application Layers, Application Lifecycle Management, Software Applications, Confluence, JIRA, Automation of Tests, Unit Testing, C Sharp (Programming Language), System Configuration, Relational Databases, Fat Client, Windows Communication Foundation, Windows Presentation Foundation, Microsoft SQL Server, Team Foundation Server, Model View ViewModel, Netsuite, Nunit, Mstest, Service Layer, SignalR, Simple Object Access Protocol (SOAP), Software Engineering, SQLite, Test Case, Strategies of Testing, Web Applications, YAML, SOAPAPI, Backend, Xunit, Moq, Integration Tests, Information Technology, Atlassian Bamboo, SDET, Web Api - **Published:** June 12, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=1aa3a9b8ee19c7e6 ## About the Role Do you have experience in YAML?, Do you have a Bachelor's degree?, Skills & Abilities * Customer Focus: Ability to understand and respond to the needs of customers with professionalism and care.? * Innovation: Ability to generate and apply creative ideas that improve work processes or add value.? * Collaboration & Teamwork: Ability to build cooperative relationships and contribute to group success.? * Results Driven: Ability to?maintain?a strong focus on achieving goals and delivering impactful results.? * Technical Aptitude: Ability to understand and use specific tools, systems, and technologies relevant to the role.? * Communication: Ability to convey information clearly and effectively, both verbally and in writing.? * Organization: Ability to structure tasks, processes, and resources efficiently to?maintain?order and flow.? * Detail-Oriented: Ability to focus on details, ensuring accuracy and precision in work tasks.?, * Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field, and a minimum of five (5) years of QA or SDET experience on .NET applications * Proficiency writing tests in C# with NUnit (or MSTest/xUnit) * Experience testing ASP.NET web applications or WCF/SOAP services request/response validation, fault conditions, contract coverage * Familiarity with MOQ or similar mocking frameworks * Comfort working with relational databases (SQL Server or SQLite) writing queries to verify data state post-integration * Experience authoring and maintaining tests in Azure Pipelines, including YAML pipeline configuration and VSTest integration * Ability to write clear testing SOPs, test plans, and runbooks for engineering and cross-functional audiences * Strong understanding of the test pyramid and when to unit test vs. integrate vs. regress * Experience with project management and ticketing tools (TFS, JIRA, Confluence). ## Description The Software Developer in Test is responsible for owning quality across multiple interconnected C# platforms, ensuring software is reliable, testable, and regression-safe at every layer of the stack. This role operates within an established testing pyramid spanning unit, integration, and regression coverage across a server-side service layer and a thick-client installer-distributed application, while driving maturity in both as the platform evolves. The ideal candidate brings hands-on experience in .NET/C# environments and a systematic approach to test architecture, enabling them to contribute meaningfully to both test strategy and day-to-day implementation. Responsibilities * Write and maintain NUnit unit and integration tests for C# service and application layers - covering backend service domains (Auth, Device, Session) and desktop application components (configuration, application lifecycle, authentication adapters) * Demonstrate working knowledge of the full development stack, including WPF, MVVM, DI, WCF/SOAP and REST/WebAPI * Test WCF/SOAP service contracts and REST/WebAPI endpoints for correctness and schema compliance * Validate desktop application behaviors, executable resolution, launch configuration, and environment-specific config correctness across Dev, QA, and Production * Validate SignalR real-time messaging behavior * Build and execute integration tests against partner API surfaces (NetSuite and others) * Author and maintain automated tests within Azure Pipelines, write pipeline YAML steps, monitor VSTest results, investigate build failures, and maintain test discovery patterns * Test across multi-environment build configurations and verify config-transform and accuracy * Collaborate with developers on service-layer and application-layer mocking strategies using MOQ and identify gaps in unit test coverage * Triage production defects and reproduce them in isolated integration test scenarios * Write and maintain testing SOPs, document test plans, test case procedures, environment setup guides, and regression runbooks for use across the team ## Related Videos - [CI/CD with Github Actions](https://www.wearedevelopers.com/videos/856-ci-cd-with-github-actions) - [Testing .NET applications a Tool box for every developer](https://www.wearedevelopers.com/videos/704-testing-net-applications-a-tool-box-for-every-developer) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Continuous testing - run automated tests for every change!](https://www.wearedevelopers.com/videos/190-continuous-testing-run-automated-tests-for-every-change) - [Why you must use TDD now!](https://www.wearedevelopers.com/videos/114-why-you-must-use-tdd-now) - [Startup Presentation: Achieving True Developer Self-Service in Kubernetes](https://www.wearedevelopers.com/videos/1181-startup-presentation-achieving-true-developer-self-service-in-kubernetes) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)