christopher.jpeg – 2026
About me
AI-powered.
Human-driven.
Coffee-fueled.
Moin! I'm Christopher Groß - fullstack developer and freelancer from Hamburg. I've been writing code since 2005, full-time as a freelancer since 2018. Remote, on an hourly basis, sometimes solo and sometimes as reinforcement in existing teams.
I started in the gaming industry with complex payment and shop systems, followed by agencies and startups across all sectors. What has always accompanied me: the ambition not just to get things running, but to build them properly.
I'm a developer with 20 years of experience – and now also an AI orchestrator. I know both worlds, and I know how to connect them. AI makes me faster and more productive, but the craft behind it remains mine.
I know how things work – with or without AI.
My Journey
- 2005
First Steps
First Hobby Projects
I started building my own browser game in my spare time, which was later sponsored by gamigo. At the same time, I ran a forum for me and my friends, created websites, and later built a community platform.
PHP Flash JavaScript - 2007
Gaming Industry
Payment & Shop Systems, Real-Time Applications
I worked for various companies in the online gaming world. Mainly, I worked on the further development of shop systems and implemented over 50 PSPs. I also developed numerous tools for our community managers and created reports for our product managers.
PHP JavaScript jQuery Zend Framework - 2014
Agency Era
Shop Systems and Custom Projects
After my time in the gaming industry, I was looking for new challenges and wanted to try my luck in the agency lifestyle. I built shop systems and created exciting custom projects for various clients.
Oxid Shopware Bootstrap jQuery YII Laravel - 2018
Freelancer
Full-Time Self-Employed
I took the big leap – went self-employed and quit my job without having a secure contract lined up. But the first client was there right away. Since then, I've been developing much more exciting projects.
PHP Laravel Vue.js Nuxt.js TypeScript - 2021
TypeScript Enthusiast
More Custom Projects and TypeScript
By now, I mainly code in JavaScript and TypeScript – PHP feels like it's behind me. The projects keep getting more exciting. In parallel, I'm exploring frameworks like Ionic to develop apps.
Vue.js Nuxt.js Adonis.js TypeScript - 2023
First Steps with AI
ChatGPT as a new everyday tool
With ChatGPT I started integrating AI seriously into my workflow – first for research and explanations, quickly also for more complex technical problems. I tried Cursor and gained some experience, but stayed loyal to my JetBrains environment. The realization came early: this isn't hype, this changes how you work.
ChatGPT Cursor IntelliJ - 2024
AI as a Real Assistant
Junie AI and solving complex problems
Junie AI by JetBrains turned out to be a real asset – directly inside the familiar IDE, no context switching. AI evolved from a toy into a serious assistant for complex problems: architecture questions, tricky bugs, unfamiliar technologies. Not yet a full Spec-Driven approach, but a clear step towards structured AI usage.
Junie AI JetBrains IntelliJ - 2025
Learning
New Horizons, Mobile Development
I've focused on web applications for too long – I actually want to build a real native app. So I'm now learning Flutter and Dart.
Flutter Dart - 2026 Current
AI Era
AI is Inevitable
Ignoring AI is no longer an option. I orchestrate AI tools deliberately and build faster and cleaner than ever before. There are first signs that more complex developer tasks can be fully replaced. You have to start orchestrating with AI and adapting – to be prepared for the future.
Spec Driven Development Claude Code CLI
What I do
Fullstack Web Development
Frontend & Backend – from architecture to production-ready implementation.
Mobile & Web Apps
From PWA to native app – cross-platform and performant.
AI Integration
Using AI deliberately instead of blindly trusting it – structured, traceable, and maintainable.
Technical Consulting
Code reviews, architecture decisions, and technical reinforcement – direct and honest.
Why me
AI-Native Thinking
I don't use AI as a gimmick – I use it as a real tool. Every project benefits from it, without any loss of quality.
Full-Stack Ownership
No back-and-forth between frontend and backend – I take full technical responsibility.
Transparent Communication
You talk directly to me – no project managers, no misunderstandings. Clear updates, honest assessments.
Quality over Speed
Being fast is good. Building it right is better – AI allows me to do both at the same time.
AI ≠ Vibe Coding
“ AI doesn't make me a better developer. 20 years of experience make me a better developer. AI makes me faster. ”
There is a fundamental difference between 'Vibe Coding' – blindly copy-pasting AI output – and the deliberate use of AI as a tool. I use AI like an experienced craftsman uses a machine: I know what I want to build, I know the materials, and the machine helps me execute it faster and more precisely.
My approach: Spec-Driven Development. I first define the architecture, interfaces, and requirements – then I use AI tools like Claude Code CLI and Cursor to accelerate the implementation. The result: fewer errors, faster delivery, equal (or better) quality.
AI doesn't replace experience. AI doesn't replace architecture decisions. AI doesn't replace code reviews. But AI in the hands of an experienced developer? That's a game-changer.
Let's talk.
You know who I am and how I work. The next step is a conversation – 30 minutes, no sales pitch, no commitment.
Write to me directly: [email protected]