.NET/C# Backend Engineer Claude Skill

Name: Vesna - .NET Developer AI Skill
Brand: KissMySkills
Price: 29.0 USD
Availability: InStock

Vesna - .NET Developer AI Skill

$29.00

$29.00 $43.99

Vesna - .NET Developer AI Skill

4.87 · 6,430 reviews across KissMySkills

$29.00 this skill vs $43.99 hiring a senior .NET contractor

Complete skill package instant downloadvesna-dotnet-csharp-engineer.skill

Works with

Choose how to get it

Buy once $29 Keep the file forever. Instant download. All-Access this skill + 1,000 more $8.25/mo billed yearly Loaded into your chat by the connector. Or $19 month to month. Cancel any time.

Secure checkout by Shopify

Ask Vesna something hard.

📎 vesna-dotnet-csharp-engineer.md LOADED ✓

.NET 8 API hangs under load, thread pool starves. We call .Result in a few places 'where it's safe.' It isn't, is it?

CLAUDE · AS VESNA, .NET DEVELOPER It isn't - .Result on a hot path is sync-over-async: every blocked request pins a pool thread waiting for a continuation that itself needs a thread, and under load the pool starves in exactly the spiral you're seeing. Fix is async end to end - no .Result, no .Wait(), no GetAwaiter().GetResult() outside true sync entry points - enforced by analyzers and a banned-API list so it can't come back. Finding them: dotnet-counters shows the queue climbing; a dump's thread stacks name every blocked call site, usually 5-10 of them. EF Core's sync query APIs count too. Want the banned-API config to drop into the repo?

⚡ Instant download ∞ Keep forever ✎ Written by us

Add it once. Your AI works like a specialist.

Add it to Claude, ChatGPT or Gemini - your AI works as a specialist in this field.

Instant download · 30-day money-back guarantee. Pay once, keep forever - no subscription. Written and tested by us, never scraped from GitHub. Refund policy

Questions before you buy?

Write to us and a person answers - usually the same day. Not a bot, not a ticket queue.

hello@kissmyskills.com

Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.

You don't read it. Your AI does.

Add the skill file to Claude, ChatGPT or Gemini once. From then on it works as a specialist in this field and answers as Vesna from the very next message.

Buy once and the file is yours to keep forever. Or subscribe to All-Access and let the KissMySkills connector load it, and every other skill, into your chat on request.

// reviews

What buyers say.

From reviews across KissMySkills

★★★★★ Max T. on Nadia — Email Marketing Specialist

strategy consultant. client deliverables need to meet a high bar. this gets me to a usable first draft in a fraction of the time.

★★★★★ Karolina W. on Diane — Executive Assistant

product manager. used to spend too much time formatting and structuring. this gives me a consistent starting point every time.

// what's inside

What's inside this skill

Async deadlock diagnosis with the blocking call named
EF Core fixes for tracking and projection queries
DI lifetime audit across your registered services
Pre-ship checklist for the service before deploy

C# and .NET developers debugging EF Core queries or deadlocks under load

A senior .NET contractor bills $95+/hr, the complete skill is yours forever.

// what's inside

What you're actually buying

What Vesna Does

Vesna turns Claude (or ChatGPT, or any AI chat) into a Senior .NET/C# Backend Engineer who diagnoses EF Core query problems, DI lifetime bugs, async deadlocks, and Azure integration choices from real evidence, then hands back a concrete, ready-to-execute plan.

Who It's For

Backend engineers and founders running a production ASP.NET Core service who need API architecture, EF Core performance, DI, or async correctness decisions made correctly.

Key Capabilities

API architecture: minimal APIs for small focused services, controllers for large surfaces needing filters and versioning
Entity Framework Core performance: AsNoTracking, N+1 detection, split queries, and reading actual generated SQL instead of guessing
Dependency injection and middleware: singleton/scoped/transient lifetimes, the captive-dependency bug, and correct middleware ordering
Async/await correctness: eliminating .Result/.Wait() deadlocks, avoiding async void, and proper cancellation token propagation
Azure integration: managed identity, Key Vault, Service Bus, and Application Insights matched to what the service actually needs
Testing strategy: xUnit and Moq unit tests plus WebApplicationFactory integration tests against the real pipeline

How to Use It

Download the skill file and paste the full contents into your Claude Project Instructions (or any AI chat's system prompt). Then describe your problem in plain language and get back a concrete, ready-to-execute plan - no re-explaining context every session. Works with Claude, ChatGPT, and any AI chat. Under 2 minutes to install.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required. No subscription. Pay once, keep forever.

// compatible with

Works with every major AI chat.

Drop the file into your AI's system prompt, Project instructions, or custom instructions. No setup. No code. No vendor lock-in.

What buyers say across KissMySkills

This skill has no reviews of its own yet. These are real reviews of other KissMySkills skills, built the same way.

★★★★★
operations lead at a growing startup. we needed consistency across the team. this gave us a shared baseline to work from.

Lukas B. on Nadia — Email Marketing Specialist
★★★★★
dropped Serena - Market Researcher AI Skill into Claude projects and it just works. writes campaign briefs, social post directions, monthly content outlines. the output doesnt need much editing which is the main thing.

Sarah K. on Serena — Market Researcher
★★★★★
cfo at a professional services firm. the output structure matched what our board expects.

Jan Z. on Nadia — Email Marketing Specialist
★★★★★
product designer. needed a structured communication layer for cross-functional work. this provides it.

Ewa A. on Serena — Market Researcher
★★★★★
investment analyst. the analytical structure matches what i need for client-facing documents.

Joanna Y. on Diane — Executive Assistant
★★★★★
hr business partner at a 200-person organisation. the structured outputs made it easier to standardise documentation quality.

Rachel M. on Nadia — Email Marketing Specialist

// faq

Questions about this product

What AI tools does this work with?+

Claude, ChatGPT, or any AI chat that accepts a system prompt or Project Instructions. Claude Projects gives the best results.

How do I install it?+

Paste the SKILL.md contents into your Claude Project Instructions or system prompt. Under 2 minutes, no setup required.

Is this a course or a tool?+

It's a single skill file, not a course. Load it once and Vesna applies the same expertise and methodology from the first message of every session.

Can Vesna diagnose why my async code is deadlocking?+

Yes. Vesna traces the async chain for the specific anti-patterns that cause deadlocks and thread-pool starvation, .Result/.Wait() calls, async void outside event handlers, and sync-over-async in request paths, and gives the corrected chain.

Do I have to read it myself?+

No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.

Is this a physical book?+

No, it's digital. You download it the moment the order goes through and it's yours permanently. The cover is styled like a book because each edition is written and edited as one self-contained piece of work. The reading part is your AI's job, not yours.