Mārupe, Latvia · UTC+3

I build web apps end to end — and the parts that touch real hardware.

Kārlis Kociņš, full-stack developer. Next.js, TypeScript and PostgreSQL on the software side; Home Assistant, Zigbee devices and managed switches on the other. I like projects where the two meet.

StatusAvailable
Currently building
AutoWeb — booking system for car workshops
Core stack
Next.js · TypeScript · Node.js · PostgreSQL
Hardware side
Home Assistant · Zigbee · VLANs · Docker
Certified
CompTIA Network+
Education
BSc Datorsistēmas, Riga Technical University
11
public repositories
2
published Home Assistant add-ons
2
managed switches, VLAN trunked
Network+
CompTIA certified · BSc from RTU

Homelab & networking

Everything below runs in my own home. It is where I learn the parts of the stack a web project alone doesn't teach.

Home Assistant
  • ·Installed and configured from scratch
  • ·Smart switches, lights and sensors integrated
  • ·Remote access and mobile notifications
  • ·Energy monitoring and optimisation
Devices & automations
  • ·Zigbee and Wi-Fi devices paired and tuned
  • ·Morning, night and presence-based routines
  • ·Motion and door sensors for security
  • ·Voice assistant and scene control
Network
CompTIA Network+
  • ·Two managed switches installed and configured
  • ·VLAN trunking: internet + IPTV over one cable
  • ·Segmentation for security and performance
  • ·Switch management, monitoring, troubleshooting
Add-on development
  • ·Two published Home Assistant add-ons
  • ·Containerised with Docker, supervised install
  • ·External APIs bridged into the HA event bus
  • ·Vaultwarden and other community add-ons run locally

Stack

Languages
  • TypeScript
  • JavaScript
  • Python
  • HTML & CSS
  • Bash
Frontend
  • React
  • Next.js
  • Tailwind CSS
  • Framer Motion
  • Radix UI · Vite
Backend & data
  • Node.js
  • PostgreSQL
  • Prisma
  • Flask
  • NumPy
Infrastructure
  • Docker
  • Linux
  • Git · GitHub Actions
  • Vercel
  • Home Assistant

Let's build something.

Open to full-stack work, freelance projects and collaborating on open source — especially anything involving Home Assistant.

kocins36@gmail.com