The Software Engineer (C#, Language Server & Extensions) will lead our initiative to relaunch BimlExpress as a VSCode extension backed by a new C# Language Server. This includes implementing robust IntelliSense features, autocompletion, and quick info for BimlScript, as well as developing a corresponding Visual Studio add-in. A significant portion of the existing BimlExpress codebase can be adapted, but the front-end extension/add-in code will need to be largely rewritten from scratch. The current Visual Studio BimlExpress add-in will also be refactored to use this new Language Server. The position will be based in Sri Lanka and will collaborate closely with the US-based product team

Responsibilities:

• Language Server Development:
• Design, develop, and maintain a new C# Language Server powering code autocompletion, hover information, syntax checks, and other IntelliSense features for BimlScript
• Integrate existing BimlExpress logic where possible while refactoring and improving code performance and maintainability
• Collaborate with product managers and domain experts to define requirements for advanced code analysis and completion rules
• VSCode Extension Creation:
• Develop a new VSCode extension in TypeScript to interface with the C# Language Server
• Implement user-friendly UI/UX components such as code snippets, hover tooltips, and inline documentation
• Ensure seamless integration, testing, and debugging within the VSCode environment
• Visual Studio Add-In Development:
• Create a Visual Studio add-in that leverages the same Language Server functionality, maintaining a unified codebase
• Adapt and reuse existing BimlExpress logic where possible while building new components and interfaces
• Maintain consistency in user experience across both VSCode and Visual Studio
• Code Review & Best Practices:
• Conduct peer code reviews, enforce coding standards, and optimize existing code for performance and security
• Assist in maintaining a clean, maintainable code structure that supports both the extension and add-in development tracks
• Testing and Debugging:
• Implement and maintain unit tests, integration tests, and end-to-end tests to ensure reliability
• Debug and resolve issues related to language server communication, IDE-specific functionalities, and overall software performance
• Projects:
• Collaborate with cross-functional teams (product management, QA, design) to meet project requirements and deadlines
• Contribute to continuous integration and continuous delivery (CI/CD) pipelines as part of an agile development process
  
  
  
  
  

To be successful in this role, you will have:

• Essential:
• Systems/Software:
• C#/.NET with a strong background in modern .NET frameworks
• TypeScript experience, especially for VSCode extensions or similar
• Language Server Protocol (LSP) knowledge for IntelliSense/auto-completion functionality
• Visual Studio extension or add-in development, or other IDE extension experience
• Version control (Git) and familiarity with CI/CD (Azure DevOps, GitHub Actions, or similar)
• Experience:
• A minimum of 3–5 years of professional software development experience
• Proven experience designing, implementing, debugging, profiling, and tuning high-performance developer tools or similar software
• Ability to write clean, maintainable code and review contributions from peers thoroughly
• Excellent communication skills for an international, distributed team
• Nice to Have:
• Familiarity with Biml, SSIS, ADF, or data warehousing concepts
• DevOps experience (Azure, Docker) for hosting or containerizing solutions
• Tertiary degree in Computer Science, Engineering, or related field