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Achievement: Pull Sharkx4Achievement: Pair Extraordinairex3Achievement: QuickdrawAchievement: YOLO

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Kiragu-Maina/README.md

Kiragu Maina

Senior Full-Stack & Systems Engineer | Fintech, AI Pipelines & Revenue Systems

I build production-grade revenue engines, payment integrations, programmatic SEO platforms, and resilient AI developer tooling. Sole engineer behind multi-tenant ISP fintech platforms and automated generative AI media pipelines.

Core Engineering Focus

  • Fintech & Payment Systems: 8 payment gateways integrated behind a single resilient interface (M-Pesa STK/B2B/reversals, Paystack, KopoKopo, bank paybills). Built with 3-layer idempotency (namespaced HTTP interceptor, DB unique receipts, transactional outbox) and circuit breakers separating provider outages from customer declines.
  • Programmatic SEO & AI Pipelines: Built 1,898 static pSEO pages powered by a 2,158-keyword manifest (198k monthly volume) with LLM content helpfulness gates, E-E-A-T publish bars, anti-doorway layout variation, and automated IndexNow liveness queues.
  • Multi-Provider AI Orchestration: Multi-lane image generation routing across Gemini variants, InstantID on free Kaggle T4s, and Flux LoRA on Replicate/RunPod with 3-tier safety recovery and adaptive Redis budget gates.
  • Platform & Systems Architecture: 9 monorepo microservices, 876 HTTP endpoints, 263 hand-written SQL migrations, self-hosted Docker fleet on VPS with automated schema-shape assertion and changed-services-only CI/CD.

Featured Open-Source Projects

  • USSDShield: Android AccessibilityService app that masks PIN input during M-Pesa USSD sessions to prevent shoulder-surfing.
  • pos-agent: Offline-first local agent for retail POS setups (Windows/Linux, pure Go).
  • a2ui-free: Provider-agnostic factory and weekly cron probe orchestrating ~90 free LLM chat models across NVIDIA, Groq, Cerebras, Mistral, and Cloudflare.
  • freellmapi: OpenAI-compatible API proxy aggregating free-tier keys from ~14 AI providers with automatic failover.
  • openclaude: CLI tool opening Claude Code workflows to OpenAI, Gemini, DeepSeek, Ollama, and 200+ models.

Production Case Studies

  • FyberPay (ISP Billing & Payments): RADIUS authentication engine, Huawei OLT/MikroTik provisioning generator, full subscription/dunning state machine, QR-verified PDF invoicing.
  • MyPhotoAI (AI Media Platform): High-speed conversion funnel with proof-first microservices, 402 download gates, geo pay-first gates across 10 currencies.
  • Shellwire (Multi-LLM Newsroom): 12-provider LLM voting consensus platform.

Detailed interactive case studies and code walkthroughs live at kiragu.alkenacode.dev.

Tech Stack & Tooling

  • Languages & Core: TypeScript, Node.js, Next.js, Python, FastAPI, Go, Kotlin (Android), SQL, Rust.
  • Database & Caching: PostgreSQL, Redis, SQLite, MongoDB.
  • Infra & DevOps: Docker, Docker Compose, Cloudflare Tunnels, RADIUS, Linux (Debian/Ubuntu), Nginx, Self-hosted CI/CD.
  • AI & Vision: MediaPipe BlazeFace, PyTorch, OpenAI APIs, Gemini, Replicate, RunPod, InstantID, Flux.

Contact & Booking

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  1. USSDShield USSDShield Public

    Android app that masks PIN input during USSD sessions (M-Pesa, Safaricom) to prevent shoulder-surfing. Uses AccessibilityService to overlay a secure input on the system USSD dialog.

    Kotlin 2 1

  2. a2ui-free a2ui-free Public

    A2UI on free LLM providers: provider-agnostic factory, council/hybrid/resilient strategies, weekly cron probe across NVIDIA/Groq/Cerebras/Mistral/CF/etc, ~90 live free chat models

    TypeScript

  3. freellmapi freellmapi Public

    Forked from tashfeenahmed/freellmapi

    OpenAI-compatible proxy that aggregates free-tier keys from ~14 AI providers with automatic failover. For personal experimentation only.

    TypeScript

  4. Kiragu-Maina Kiragu-Maina Public

    HTML

  5. openclaude openclaude Public

    Forked from Gitlawb/openclaude

    Claude Code opened to any LLM — OpenAI, Gemini, DeepSeek, Ollama, and 200+ models via OpenAI-compatible API shim

    TypeScript

  6. pos-agent pos-agent Public

    AlkenaCode POS — offline-first local agent for small shops (Windows/Linux, pure Go)

    Go