Available for new projects

Julian Köttstorfer

Software Engineer & Product Builder

I turn complex problems into fast, dependable software — and interfaces people actually enjoy coming back to.

About

Software that works quietly in the background.

I'm a web developer who enjoys the unglamorous parts of the job as much as the exciting ones — clean data models, sensible error states, and code that's still easy to read a year later. My background spans full-stack product work: React and TypeScript on the front end, Node.js and SQL on the back, with enough DevOps know-how to ship and monitor what I build.

I care about the details that make software feel trustworthy — fast load times, accessible interfaces, and features that do exactly what they say. Outside of client work, I spend time exploring new tools, contributing to small open-source projects, and refining the systems I rely on every day.

Skills

What I build with

Language JavaScript & TypeScript
Language Python
Frontend React & Next.js
Frontend HTML, CSS & Tailwind
Backend Node.js & Express
Backend REST & GraphQL APIs
Database PostgreSQL & MongoDB
Tooling Git & CI/CD
Tooling Docker
Testing Jest & Playwright
Cloud AWS & Vercel
Design Figma‑to‑code

Work

Selected projects

Fintra

A personal finance dashboard that turns raw bank exports into a clear picture of spending, budgets, and savings goals.

  • React
  • TypeScript
  • Node.js
  • PostgreSQL
View project

Northbound

A marketing site and headless CMS for a logistics startup, built for fast edits by a non-technical content team.

  • Next.js
  • Sanity
  • Tailwind CSS
  • Vercel
View project

Pulse

A real-time team chat app with channels, presence, and message history, built to stay responsive under heavy concurrent load.

  • Node.js
  • Socket.io
  • Redis
  • React
View project

Contact

Let's build something

Have a project in mind, or just want to say hello? Fill in the form and I'll get back to you.