Ivan K.

Senior full-stack developer with 16+ years of experience building production-grade web applications, cloud infrastructure, and AI-powered systems. I specialize in PHP/Laravel backends, Python scraping and automation pipelines, React/Astro frontends, and Flutter mobile apps — all deployed on AWS and Cloudflare Workers. My recent work spans LLM integration (Gemini, Claude API), RAG pipelines with pgvector, SQS/SNS event-driven architectures, and Playwright-based scrapers that handle CAPTCHA and TLS fingerprinting. I've built fintech platforms with subscription billing and data pipelines, e-commerce systems, IoT/kiosk hardware with Arduino and Raspberry Pi, and large-scale programmatic SEO sites targeting high-traffic growth. I function comfortably as a solo principal developer, software architect, and client-facing technical lead — handling everything from DB schema design to cloud IAM policies to end-user UX.