I build and operate production systems in the JavaScript ecosystem. My background spans Industrial IoT systems for 24/7 manufacturing environments, AI-driven communication platforms, and self-hosted infrastructure for production workloads.
Currently working at CEPEDI on factory automation systems and independently building SaaS products with AI integrations.
What I work with
- Backend: Node.js, NestJS, PostgreSQL, BullMQ, WebSockets
- Frontend: React, Next.js, React Native (Expo), TailwindCSS
- AI & Data: OpenAI API, RAG pipelines, pgvector
- Infrastructure: Docker, Proxmox, Nginx, Cloudflare, GitHub Actions
Writing
I write about engineering decisions and real production problems at dev.to/jancera
Contact