KowashLab — Backend & AI Architect

Full-stack developer specializing in Python backend systems, AI/LLM integration, and modern web applications. Expert in FastAPI, Django, React, and cloud infrastructure. Based in Stockholm, available worldwide.

Services

Backend & AI Logic — Python backend development with FastAPI and Django.
Frontend Development — Modern React and TypeScript development.
Database & Vector Data — PostgreSQL, Supabase, and vector database solutions.
AI & API Integration — LangChain, OpenAI, and third-party API integration.
Cloud & DevOps — Docker, Kubernetes, and cloud infrastructure.
Testing & Security — Comprehensive testing strategies and security audits.

Projects

Latest from the Blog

PostgreSQL CTEs and Window Functions You Should Be Using — Go beyond basic SELECT queries with Common Table Expressions and window functions — real patterns for analytics, paginat
Rate Limiting APIs Without Breaking User Experience — How to implement token bucket rate limiting with Redis, handle bursts gracefully, and communicate limits to clients — wi
SSR vs SSG vs ISR: Choosing the Right Rendering Strategy for React — A framework-agnostic comparison of server-side rendering, static site generation, and incremental static regeneration wi
Observability for Backend Services: Logs, Traces, and Metrics That Matter — How to instrument a FastAPI backend with structured logging, distributed tracing, and metrics — without drowning in data
Caching Strategies for Full-Stack Applications — A practical breakdown of caching layers — browser, CDN, API, and database — with real implementation patterns for React
Debugging CSS Position Sticky: A Complete Guide — Complete guide to debugging CSS position sticky issues including overflow traps, flex stretch, and missing top values.

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Contact

Get in touch for backend development, AI integration, or full-stack projects. Contact page