# Sándor Kirchhof

> Full-stack developer in Budapest. Open to offers. Works on-site, hybrid or remote. Core stack: Go, Vue, Nuxt, Astro, C# / .NET, PostgreSQL.

I've been into IT since childhood and taught myself programming starting in elementary school. My deepest expertise is .NET/C#, built over 8–10 years of Unity work. Today I mostly build with Go on the backend and Astro or Vue on the frontend, picking whichever stack fits the task.

Being self-taught means I pick up new languages and frameworks fast when the job calls for it, instead of forcing everything through one stack.

I use LLM-assisted coding heavily to multiply my output, but I'm not a vibecoder. I use it to move faster on work I already understand, not to skip understanding it.

I'm driven by varied technical challenges and keep pushing to learn new tools and frameworks.

## Contact

- Email: sandor.kirchhof@gmail.com
- LinkedIn: https://www.linkedin.com/in/sándor-kirchhof-737732298
- GitHub: https://github.com/llx001
- Website: https://sandorkirchhof.com/

## Tech stack

- Languages: Go, C#, TypeScript, PHP, Java
- Frontend: Vue, Nuxt, Astro, Tailwind CSS
- Backend and infrastructure: .NET / WPF, PostgreSQL, Caddy, Linux / VPS, Docker
- Other: Unity, LLM-assisted tooling

## Education

- Self-taught: Programming since elementary school. No university degree: I learned by building.
- PLC programmer: Hungarian state vocational qualification (OKJ)
- English, C1: Complex language exam (written and oral)

## Experience

- [Kirchhof Solutions](https://sandorkirchhof.com/work/kirchhof-solutions/): Sole proprietor, 2025–now. My own company: web platforms, marketing sites, custom business software and the infrastructure they run on.
  - [KS-Learning](https://sandorkirchhof.com/work/ks-learning/): 2025–now. A multi-tenant course platform I'm building now: full white-labelling, certifications, evidence tracking, written and video lessons, and assessments.
  - [sportoloimeresek.hu](https://sandorkirchhof.com/work/sportoloimeresek/): 2025. A full-stack sports analytics platform I built solo with Nuxt, Prisma and PostgreSQL.
  - [Marketing websites](https://sandorkirchhof.com/work/marketing-sites/): 2025. 7 marketing sites built with Astro and Tailwind, each taken from an idea to a live site running on my own hosting system.
  - [Agro-Mark grain storage system](https://sandorkirchhof.com/work/agro-mark-grain-storage/): Agro-Mark Kft., 2025. An on-site system that runs Agro-Mark's bulk grain storage: partners, invoices and product movements, with a live camera view into the grain carts.
  - [Unity web integration template](https://sandorkirchhof.com/work/unity-web-integration/): 2025. A Unity project template with ready-made C# functions for talking to a company's website, for game tracking and more, in both WebGL and desktop builds.
- [Óbuda University](https://sandorkirchhof.com/work/obuda-university-2024/): Software developer, IT project manager, 2024–2025. Development, IT project management and teaching at the university.
  - [Competition website](https://sandorkirchhof.com/work/competition-website/): 2024–2025. A Vue and PHP website that supports organizing a large-scale competition.
  - [IT courses for children](https://sandorkirchhof.com/work/it-courses-for-children/): 2024–2025. Designed and taught IT and programming courses for children.
  - [Minecraft mods for Erasmus+](https://sandorkirchhof.com/work/minecraft-mods/): 2024–2025. Minecraft modifications in Java, built as part of an Erasmus+ project.
- [Ny-Design Kft.](https://sandorkirchhof.com/work/ny-design/): Lead software developer, software generalist, 2023–2024. Built and managed the company's IT infrastructure and created DLCs in Unity.
  - [Company website](https://sandorkirchhof.com/work/ny-design-website/): 2023–2024. The company website, built with Bootstrap 5 and PHP.
  - [Nyerges ONE](https://sandorkirchhof.com/work/nyerges-one/): 2023–2024. A software management application built with .NET and WPF.
  - [Unity DLCs](https://sandorkirchhof.com/work/unity-dlcs/): 2023–2024. Managed DLC development end to end, from modeling to release.
- [Óbuda University](https://sandorkirchhof.com/work/obuda-university-2022/): Software developer, 2022–2023. Developer on a European Union-funded project, where I led development of an educational game.
  - [Educational game](https://sandorkirchhof.com/work/educational-game/): 2022–2023. An educational game for an EU-funded project. I led development, working closely with designers and special education teachers.

## Side projects

- [sandorkirchhof.com](https://sandorkirchhof.com/work/sandorkirchhof-com/): 2026. This site: an interactive CV built with Astro and Tailwind, with a filterable timeline and a page for every project.

## Optional

- [Full profile in one file](https://sandorkirchhof.com/llms-full.txt): everything above plus every project writeup and testimonial