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Achievement: Pull SharkAchievement: Pair ExtraordinaireAchievement: YOLO

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dev-k99/README.md

Hi, I'm Kwanele Ntshangase 👋

.NET Fullstack Developer & AI Engineer — building production systems for real users in South Africa, not tutorial projects. 9 live deployments · 1 GitHub Marketplace Action published.

🔗 What I build

  • ASP.NET Core 8 REST APIs with Clean Architecture, JWT auth + refresh rotation, and role-based access control
  • React 18/19 SPAs with TypeScript, Tailwind CSS, and real-time SignalR
  • RAG & agentic AI systems — hybrid retrieval (BM25 + dense + RRF + reranking), benchmarked on RAGAS, not vibes
  • SA-specific compliance — POPIA audit trails, SAPS/ITAC ticketing workflows, OIDC workload identity federation for zero-stored-credential CI/CD

🛠️ Tech Stack

C# ASP.NET Core 8 EF Core React Python TypeScript PostgreSQL Azure Docker GitHub Actions SignalR LangGraph FastAPI

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  1. ScrapFlow ScrapFlow Public

    Full-stack scrap metal management system for South African scrapyards. SAPS/ITAC compliant · 6-step digital ticket workflow · Real-time SignalR inventory · 5-role RBAC · Webhook automation · Offlin…

    JavaScript

  2. HospitalWardManagementSystem HospitalWardManagementSystem Public

    ASP.NET Core 8 MVC hospital ward management system — patient admissions, nursing care, doctor visits, medication & inventory — with 7-role RBAC, EF Code-First, and live demo on Azure.

    HTML

  3. Eskhawini-Library-System Eskhawini-Library-System Public

    Production-ready library management app demonstrating Clean Architecture, role-based auth, real-time updates (SignalR), and cloud deployment (Azure App Service + Vercel).

    C#

  4. RAG-Assistant RAG-Assistant Public

    Not another tutorial RAG. Hybrid retrieval (BM25 + dense), cross-encoder reranking, RAGAS evaluation, FastAPI backend, persistent ChromaDB — 25–31% better than cosine similarity baseline. Built wit…

    Jupyter Notebook

  5. SupportOS SupportOS Public

    ASP.NET Core 8 Minimal API — Clean Architecture, CQRS/MediatR, EF Core 8, JWT auth, audit trail, SLA tracking, idempotency. Deployed to Azure via GitHub Actions OIDC.

    C#