Cassio B.
Fullstack Developer | .NET | C# | WPF | API | SQL | Angular | NextJs
I am a Full Stack developer with years of experience delivering desktop applications using WPF, as well as web applications. My main focus is on the C# language and the .NET environment, but I also have experience with Angular and NextJs. 💻 Core Skills: Backend: C#, .NET Framework, .NET Core, ASP.NET Web API Frontend: Angular, NextJs, TypeScript Database: SQL Server, SQLite, MongoDB Architecture: Clean Architecture, Unit of Work, Repository Pattern, DDD Tools: Git, Azure DevOps, REST APIs, Swagger, Entity Framework, Docker 🚀 What I can do for you: - Fix bugs and improve performance in existing .NET applications - Create clean and secure REST APIs - Refactor legacy codebases for better maintainability - Optimize SQL queries and improve database performance - Develop full-stack web applications (frontend + backend) - Integrate third-party APIs and services 🧠 Why work with me? I prioritize clean, maintainable code and clear communication. I deliver on time and always prioritize quality. Whether it's fixing critical bugs or developing a complete application, I'm here to help. 📩 Let's talk! I'm ready to collaborate and add value to your project.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $1.8k
Billed in all: $2,646$2.6k
$889 in the last 6 months
Across 3 contracts
Earnings, last 30 days
Skill rankings: Top 15% in Windows Forms
Ranked by MRR among everyone on Upwork with the skill.
- #33ADO.NET204 freelancers · 🇧🇷 #3Top 16%🇧🇷#3 of 4
- #40Windows Forms270 freelancers · 🇧🇷 #1Top 15%🇧🇷#1 of 4
- #84Product Support215 freelancers · 🇧🇷 #1Top 39%🇧🇷#1 of 1
- #89Windows Presentation Foundation398 freelancers · 🇧🇷 #2Top 22%🇧🇷#2 of 7
- #461ASP.NET Core2,272 freelancers · 🇧🇷 #4Top 20%🇧🇷#4 of 10
- #537ASP.NET2,819 freelancers · 🇧🇷 #8Top 19%🇧🇷#8 of 18
- #585.NET Framework2,944 freelancers · 🇧🇷 #9Top 20%🇧🇷#9 of 33
- #672.NET Core3,067 freelancers · 🇧🇷 #11Top 22%🇧🇷#11 of 37