Yun L.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I help companies automate their design workflows and get more value from Autodesk software. I have a background in Structural Engineering and work as a software developer, specializing in custom solutions for: • AutoCAD / AutoCAD Mechanical • Autodesk Inventor • Revit Because I understand both engineering workflows and software development, I build tools that actually solve real production problems – not just “nice code”. What I can help you with • Custom plugins and add-ins (.NET / C#) • AutoLISP and Visual LISP development • Workflow automation and batch processing • Drawing standardization and quality checks • Tool palettes, menus, and deployment (bundles) • Integration with Excel, databases, or other systems • Performance optimization for large drawings or assemblies Typical results • Less manual work • Fewer errors • Faster delivery times • Consistent standards across projects Technical skills • C# / .NET (Autodesk APIs) • AutoLISP / Visual LISP • WPF (custom UI) • AutoCAD, Inventor, Revit APIs • CAD automation and customization Why work with me • Structural engineering background – I understand your drawings and requirements • Experience with real production environments • Clear communication and practical solutions • Focus on long-term, maintainable tools If you want to automate repetitive work or build a custom Autodesk solution, let’s talk.