Gui Ferreira

I help developers work simpler, move faster, and keep quality high.

Your Code Assistant Just Leaked Your Database Password
Your Code Assistant Just Leaked Your Database Password
If you are using Cursor AI do this to protect your secrets
If you are using Cursor AI do this to protect your secrets
If you are using Claude Code do this to protect your secrets
If you are using Claude Code do this to protect your secrets
AI Evaluations in .NET
AI Evaluations in .NET
LLM Observability with Helicone and dotnet
LLM Observability with Helicone and dotnet
Improve your AI .NET code output with AGENTS.md
Improve your AI .NET code output with AGENTS.md
You’re Not Writing DRY Code, You’re Just Confused
You’re Not Writing DRY Code, You’re Just Confused
Stop Wasting Time: Let Cursor AI Plan & Execute for You
Stop Wasting Time: Let Cursor AI Plan & Execute for You
Simple Problem ≠ Simple Solution
Simple Problem ≠ Simple Solution
If Your Integration Tests FEEL Impossible to Debug, Watch This!
If Your Integration Tests FEEL Impossible to Debug, Watch This!
Still Writing Using Statements in Every File? Why?
Still Writing Using Statements in Every File? Why?
This SIMPLE Image Trick Eliminated 40% of My Website's Load Time
This SIMPLE Image Trick Eliminated 40% of My Website's Load Time
Why Most .NET Developers Don't Need MediatR
Why Most .NET Developers Don't Need MediatR
Why OSS Going Commercial is Actually a GREAT Opportunity
Why OSS Going Commercial is Actually a GREAT Opportunity
I Rebuilt My Entire Website in 2 Days (The Minimalist Way)
I Rebuilt My Entire Website in 2 Days (The Minimalist Way)
Long Polling is Underrated - Here's Why It's Brilliant
Long Polling is Underrated - Here's Why It's Brilliant
MIND Principles: Write Code Easy to Test
MIND Principles: Write Code Easy to Test
Microsoft Just Replaced VSTest and Most .NET Developers Missed It
Microsoft Just Replaced VSTest and Most .NET Developers Missed It
Why Caching Isn't as Easy as It Looks
Why Caching Isn't as Easy as It Looks
How I Built a React UI on Top of My .NET RAG API (using Cursor AI)
How I Built a React UI on Top of My .NET RAG API (using Cursor AI)
Every Backend Dev Goes Through These 3 Phases
Every Backend Dev Goes Through These 3 Phases
Cursor 1.0 Just Got Personal – and I Love It
Cursor 1.0 Just Got Personal – and I Love It
Why This Tiny .NET 10 Change Is a Big Deal?
Why This Tiny .NET 10 Change Is a Big Deal?
How to Use Embeddings with Postgres (Surprisingly Easy)
How to Use Embeddings with Postgres (Surprisingly Easy)
What If You Never Had to Install a Full Package Again?
What If You Never Had to Install a Full Package Again?
How I Built a RAG App in .NET (Using Azure AI in Minutes)
How I Built a RAG App in .NET (Using Azure AI in Minutes)
5 SQLite Features You Never Knew About!
5 SQLite Features You Never Knew About!
How This .NET Developer Built a Successful macOS App in 30 Days (With ZERO Swift Experience)
How This .NET Developer Built a Successful macOS App in 30 Days (With ZERO Swift Experience)
Building a macOS App as a .NET Developer - Full Conversation with Amichai Mantinband
Building a macOS App as a .NET Developer - Full Conversation with Amichai Mantinband
4 Ways to Culture-Proof Your C# xUnit Tests | Never Break Your Pipeline Again!
4 Ways to Culture-Proof Your C# xUnit Tests | Never Break Your Pipeline Again!