About the Position

🇩🇪 🇬🇧

⚡ No more AI prototype chaos

Modernize legacy systems & make AI-generated code production-ready – Fullstack Developer Freelance

Java, React, PHP – I take over unmaintainable legacy systems and chaotic AI-generated applications. Secure, scalable, and built for real-world use.

🔹 Fixed price. 4-6 weeks delivery time. You keep the code.

Discuss your project →
Non-binding quick code check available

What I Do

🛡️ Legacy apps stabilized

🧠 AI refactoring specialist

💸 Fixed pricing & clarity

My Specializations

• Home
• Java Legacy
• PHP to React
• AI Code Refactoring
• References

What AI Cannot Do

I bring order to technical standstill

No generic landing pages. Production-ready architecture for companies solving real problems.

🏚️→🏗️

Legacy Modernization

Java 8, old PHP monoliths, or unmaintainable Ajax spaghetti? I migrate step by step to modern stacks (Spring Boot, React, Tailwind).

• Java → Spring Boot
• PHP → REST API
• React Frontend

🤖→🧑‍💻

Make AI-generated Code Production-Ready

Your AI-generated prototype has no auth, no logging, no tests? I build the missing backend & frontend around it and make it maintainable.

• OpenAI Integration
• Security & RBAC
• Deployment Ready

Refactoring + React UI

You have an existing backend (Java/PHP) but an outdated interface? I design/implement a modern React UI – performant and accessible.

• React + Hooks
• State Management
• Responsive Design

📌 My promise: You only pay what we agree on. No surprises. No hidden hours. After 4-6 weeks, your system is running.

What You Do Not Need From Me

• ✖️ Generic AI landing pages without real value
• ✖️ Fast prototypes that fail in production
• ✖️ Unmaintainable "copy-paste" chatbot code
• ✖️ Pure web design without backend expertise

Instead: Architecture, stability, and a UI that truly works.

"I already had 3 AI prototypes built - none of them runs in the cloud."

– That is exactly where I step in.

Concrete Outcomes

From Chaotic to Production-Ready

📉 Before: PHP monolith with 12k lines, no testing, constant outages.

📈 After: API-first architecture + React dashboard, outage rate -95%.

✓ Legacy modernization in 6 weeks

🤖 Before: AI-generated React app without backend - data only in localStorage.

⚡ After: Complete Java Spring API, PostgreSQL, JWT auth + clean UI.

✓ AI integration & production rollout

AI & Your Concerns - Plain Talk

"Won't AI Replace Your Work Too?"

No. AI can build prototypes, but not production-ready systems with security, legacy databases, and domain-specific logic. That is exactly where I work - as an architect and problem solver.

"Why Not Just Hire a Junior with ChatGPT?"

Because you pay twice in the end: first for the prototype, then for me to fix it. I offer fixed prices for exactly this scenario - cheaper than trial and error.

"Do You Also Do Web Design?"

Not pure design. But as a full-stack developer with a strong UI sense, I build modern React interfaces - including implementation, not just visuals.

About Me

Your Technical Sparring Partner for Difficult Software Projects

I support companies when legacy systems slow delivery or AI prototypes are not production-ready. Focus: clear architecture, robust implementation, and fast, traceable outcomes.

Stack: Java, React, PHP, Spring Boot • Approach: pragmatic, transparent, production-focused.

Project or Legacy Burden?

Let's talk for 30 minutes free of charge - I will analyze your legacy or AI problem.

Go to inquiry form →

🔹 Fixed price? Yes, of course. Just ask.

or via LinkedIn / Xing - contact details on request

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