Web Development

Comprehensive engineering blueprint for building and deploying production web applications: code repository on GitHub, domain acquisition (.com, .co.ke), Cloudflare edge DNS & SSL proxying, managed databases (Supabase, Firebase, Railway, Render), secure auth (NextAuth & Firebase), and mobile money integrations with Safaricom Daraja 3.0 M-Pesa and PayHero Kenya API.

Complete engineering manual for purchasing global and Kenyan ccTLD domains (.com, .co.ke via KeNIC registrars), configuring authoritative DNS records (A, AAAA, CNAME, TXT, MX), nameserver delegation to Cloudflare, CNAME flattening at apex, Full (Strict) SSL encryption, and edge firewall security.

Architectural blueprints and connection setups for 4 leading cloud databases: Supabase PostgreSQL with PgBouncer connection pooling and Row Level Security, Firebase Firestore NoSQL collections, Railway containerized microservices and private meshes, and Render managed PostgreSQL instances.

Production authentication architecture covering OAuth 2.0 (Google, GitHub), Credentials login with password hashing, HTTP-only SameSite secure session cookies, JWT vs Database sessions, Next.js Edge Middleware route guards, and Role-Based Access Control (RBAC).

End-to-end payment integration manual for Safaricom Daraja 3.0 (Lipa Na M-Pesa Online STK push, OAuth 2.0 token generation, password calculation, webhook callback handling, transaction status query) and PayHero Kenya API (unified channel tokens, automated STK push, and IPN HMAC signature validation).

Best practices for structuring modern, high-performance full-stack web applications using Next.js App Router (React Server Components, Suspense streaming), Tailwind CSS design tokens, robust API route handlers with Zod validation, and Core Web Vitals optimization.