What does a VB.NET developer do?
A vb.net developer builds and maintains software applications using the Visual Basic .NET language within the Microsoft .NET ecosystem. This role focuses on writing clean, structured code for desktop, web, or enterprise systems while ensuring application stability through rigorous testing. The developer manages the full lifecycle of application components, from initial coding to dependency management and debugging within integrated development environments.
- Authors application logic and user interface components using VB.NET syntax and the .NET Framework libraries. The developer structures code to meet functional requirements, implements business rules directly into the software architecture, and refactors existing modules to improve readability and performance without altering external behavior.
- Creates and maintains unit test suites using MSTest to verify that individual code units function as intended before integration. This work involves writing test cases that cover edge conditions, executing these tests through the Visual Studio Test Explorer interface, and analyzing failure logs to pinpoint logical errors in the source code.
- Manages project dependencies and external libraries by configuring NuGet packages within the development environment. The developer runs restore commands via the dotnet CLI or Visual Studio tools to ensure all required assemblies are present, resolves version conflicts between packages, and updates references to keep the build environment consistent and reproducible.
- Diagnoses and fixes runtime errors and test failures by stepping through code with debugger tools inside Visual Studio. This process includes setting breakpoints, inspecting variable states during execution, tracing call stacks to identify the root cause of exceptions, and applying patches that resolve defects while preventing regressions in previously working features.
How to hire a VB.NET developer on Upwork
Step 1: Post a job
Define your project requirements clearly to attract qualified candidates who specialize in the .NET Framework. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft a precise description. Describe your needs in a few sentences and Uma drafts a job post for the role. You can write a new post, update a saved draft, or reuse an existing post.
- Specify that the freelancer must build application code using Visual Basic and the .NET platform.
- List required tools such as Visual Studio and experience with NuGet for managing project dependencies.
- Clarify if the work involves maintaining legacy systems or creating new unit tests with MSTest.
Step 2: Evaluate candidates
Review portfolios for evidence of clean VB.NET source code and structured test projects. Uma can run instant video interviews and build shortlists with side-by-side comparisons to help you assess technical fit.
- Look for examples of unit test projects that demonstrate proficiency with the MSTest framework.
- Check for familiarity with Test Explorer in Visual Studio for running and debugging tests.
- Verify experience using the dotnet CLI to execute tests and restore dependencies efficiently.
Step 3: Interview your top choices
Discuss specific technical workflows to confirm their hands-on experience with Microsoft tooling. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.
- Ask how they organize unit tests and handle failures within the Visual Studio test workflow.
- Inquire about their process for restoring packages and managing versions via NuGet.
- Request examples of how they debug complex logic errors in existing VB.NET applications.
Step 4: Agree on scope and begin work
Set clear milestones for code delivery and testing outcomes before starting the contract. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.
- Define deliverables such as updated VB.NET application source code and passing unit test cases.
- Establish a schedule for submitting test execution results and fixes for any failing tests.
- Agree on protocols for updating project dependencies and documenting changes via NuGet.
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The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.