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sayinbrahim/README.md

Halil İbrahim Sayın

Senior Software Engineer · Backend Architecture · Enterprise .NET Systems

Ankara, Türkiye

Portfolio · X · LinkedIn · Email

About

Six-plus years building .NET production systems across regulated industries — energy market integrations, DO-178C avionics, MIL-STD-1553B helicopter control systems, large-scale enterprise platforms, and AR training simulators. Currently shipping the .NET stack behind Turkey's electricity market at Enerjisa.

My open source focus is the intersection of AI coding tools and enterprise .NET — what skills, playbooks, and rules actually survive an audit-grade review.

Currently

  • Working on — claude-code-for-dotnet: production-tested Claude Code skills, playbooks, and CLAUDE.md templates for enterprise .NET teams
  • Writing — long-form pieces on .NET production engineering and AI coding workflows (first essays publishing 2026)
  • Building — ZephryAstro, an AI-augmented Turkish-language astrology platform (side project)

Featured repositories

  • claude-code-for-dotnet — Battle-tested Claude Code skills, playbooks, and CLAUDE.md templates for enterprise .NET
  • UclVirtual — UEFA Champions League draw simulator with full seeding and country-protection rules · Live
  • sayinbrahim.github.io — Personal portfolio site built with Astro

Stack

C# · .NET 8 · ASP.NET Core · EF Core · React · Vue.js · TypeScript · PostgreSQL · MSSQL · Oracle · Hangfire · Serilog · Docker · Azure · Claude Code

Stats

GitHub stats Top languages

Get in touch

Open to consulting on enterprise .NET modernization, production AI tooling adoption, and migrations. Reach me at sayinhalil23@gmail.com or via LinkedIn.

This profile is a living document, updated as the work evolves.

Popular repositories Loading

  1. dotnet-context-mcp dotnet-context-mcp Public

    MCP server bridging Claude Code with .NET solution analysis via Roslyn

    C# 1

  2. UclVirtual UclVirtual Public

    Virtual UEFA Champions League group stage draw with full seeding and country-protection rules. Live at uclvirtual.com

    TypeScript

  3. claude-code-for-dotnet claude-code-for-dotnet Public

    Battle-tested Claude Code skills, playbooks, and CLAUDE.md templates for enterprise .NET developers.

  4. sayinbrahim.github.io sayinbrahim.github.io Public

    Astro

  5. sayinbrahim sayinbrahim Public

  6. ef-migration-safety ef-migration-safety Public

    Static safety analyzer for EF Core migrations. Catches DropColumn + AddColumn data loss, missing defaults, empty Down() methods, and unsafe rename operations before they reach production.

    C#