APPLICATION CODE &
SOFTWARE SYSTEM DESIGN.
Building robust web applications, high-concurrency API gateways, clean backend microservices, and reactive frontend user interfaces using modern software engineering patterns.
01 / BACKEND ENGINEERING
Designing RESTful APIs, Clean Architecture layers, JWT authentication middleware, rate limiting, and request sanitization across Go (Gin), Node.js (Express), and Python (FastAPI).
- High-Concurrency Go API Gateways
- Express Node.js & Prisma ORM
- Python FastAPI AI Services
02 / FRONTEND ENGINEERING
Constructing responsive single-page and server-rendered web applications with React 19, Next.js 15, TypeScript, Tailwind CSS, Zustand, and TanStack Query.
- Next.js App Router & SSR
- Interactive React Flow Graphs
- Type-Safe API Contracts
03 / FULL-STACK INTEGRATION
Bridging application code directly to persistence layers (PostgreSQL, MongoDB, Redis, ClickHouse) and container runtime environments.
- Microservices Communication
- Database Schema Optimization
- End-to-End Application Lifecycle
SOFTWARE ENGINEERING CASE STUDIES
VIEW ALL PROJECTS →HakiOps — Multi-Tenant Enterprise AI Reliability SaaS Platform
Enterprise-grade AI reliability platform featuring a Go API Gateway, 20 internal Python AI microservices, Redpanda Kafka streaming, Vault security, and GitOps ArgoCD deployments.
LoadMind — Unified User Journey & Performance Testing SaaS
Unified user journey recording and distributed load testing SaaS platform built with Next.js 15, Go Gin Clean Architecture, Playwright browser execution, and ClickHouse step analytics.
UpStat — Cloud Uptime & Heartbeat Observability Platform
Multi-tenant cloud infrastructure uptime and status page monitoring platform featuring Node.js, Prisma ORM, MongoDB Replica Set, and automated webhook alerting.