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Cassio B.
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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.

🇧🇷Cordeiropolis, Brazil$25/hr100% JSS5.00 (2)Since Jan 2023

Earnings and projects

MRR
$296

Last 6 months ÷ 6

World#98,857 / 412k
🇧🇷Country#1,181 / 4,647
Revenue, last 30 days
$0

Last 6 months: $1.8k

Total earnings
$2.5k

Billed in all: $2.6k

World#314,127 / 412k
🇧🇷Country#3,498 / 4,647
Per project
$1.3k

$889 in the last 6 months

World#107,506 / 412k
🇧🇷Country#1,183 / 4,647
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇧🇷Country#908 / 4,647
Projects in all
2

Across 3 contracts

33% fixed67% hourly
World#328,886 / 412k
🇧🇷Country#3,382 / 4,647

Earnings, last 30 days

$2.6kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$2,550$2,600$2,650$2,700Oct 8Oct 23Nov 7

Skill rankings: Top 15% in Windows Forms

Ranked by MRR among everyone on Upwork with the skill.

  1. #33ADO.NET204 freelancers · 🇧🇷 #3Top 16%
  2. #40Windows Forms270 freelancers · 🇧🇷 #1Top 15%
  3. #84Product Support215 freelancers · 🇧🇷 #1Top 39%
  4. #89Windows Presentation Foundation398 freelancers · 🇧🇷 #2Top 22%
  5. #461ASP.NET Core2,272 freelancers · 🇧🇷 #4Top 20%
  6. #537ASP.NET2,819 freelancers · 🇧🇷 #8Top 19%
  7. #585.NET Framework2,944 freelancers · 🇧🇷 #9Top 20%
  8. #672.NET Core3,067 freelancers · 🇧🇷 #11Top 22%