I am Krisztián Rapcsány, a full stack developer.
I started in game development. In 2015 I was lead programmer at a game studio: we made computer and mobile games, and AR/VR games, and that is where I led a development team for the first time.
After that I built custom applications and websites as a sole trader, and from 2018 I worked as a web developer at a car-accessories web shop. From 2023 I was CTO of a startup, where I built a team, designed a high-load SaaS and took part in setting up the servers.
Since then I have worked as a freelancer. My main field is PHP and Laravel, but I build everything myself, from the backend through the web interface to the mobile app, and I understand operations too. I like working on live systems, and I also redesign, audit and speed up old ones.
For bigger jobs, we can also work as a team.
I have been developing since, from games to business systems
projects, each with a detailed case study
stops in my career: programmer, sole trader, CTO
languages: Hungarian, Serbian, Croatian, English
I understand first
Before I build, I understand the goal, and what happens if something breaks.
I measure, I do not guess
My check-in app times every scan for every guest. I do not say it is fast, I can see it.
I do not stop a running system
I rewrite an old system feature by feature, with identical behaviour, so everyone can keep working.
I defend against failure
Dry runs, switches, retries and logging. I build in first what saves you when something goes wrong.
I start small
I build the essentials first, then extend. I added the community features the same way: behind a switch, gradually.
I write down what matters
Documented code, a handover, and explanations that are not only for developers.
Companies running live systems
Where downtime costs money, and a change has to be released while everything keeps working.
Early-stage businesses
Who need not just a coder, but a technology partner for decisions and for building a team. I did that as a CTO.
Teams that inherited code
I help put things in order with an audit, a redesign and fixes for the most important bugs.
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Oct 2024 – present
Freelance web developer
Web shops and custom web systems, designing and building own systems, data synchronisation systems, development and system design consulting.
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Feb 2023 – Oct 2024
Chief Technology Officer, startup
Took part in launching a startup in the Hungarian IT retail market. I designed and built the system, set up and led the development team, took part in designing the server infrastructure, and built a high-load SaaS platform in Laravel, PHP and NoSQL.
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Jan 2021 – Feb 2023
Freelance web developer
Web shops and custom web systems, data synchronisation systems, designing an own system.
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Apr 2018 – Jan 2021
Web developer, car-accessories web shop
Maintaining websites and adding features, syncing the business system with the web shops, building a local and an online development environment.
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Aug 2016 – Apr 2018
Sole trader, custom applications
Online applications, static websites, development for Windows, Mac and mobile platforms, AR/VR games, coordinating the development team.
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Feb 2015 – Aug 2016
Lead programmer, game studio
Designing, developing and documenting computer and mobile games, AR/VR games, leading the development team, supporting the project's marketing.
- Hungarian native
- Serbian B2
- Croatian B2
- English B1–B2
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2010 – 2014Telecommunications electrical technician, with C++ and C# studies
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2013 – 2014ECDL Advanced, a seven-module diploma
Let us talk about your project
Tell me what you would build or what needs putting in order, and we will see how I can help.