Christopher — Senior Freelance Developer
14 years of experience in design and development of custom business web applications. I build robust business applications and integrate AI into existing tools — as a single point of contact, with no sales layer.
A proven stack, not a buzzword bingo
Every technology I use is chosen for its reliability in production, not to pad a resume.
Backend & API
- Node.js / Express / Fastify
- Java / Spring Boot
- Python / FastAPI
- PHP (legacy & CMS)
- REST API · GraphQL · WebSocket
Frontend & UI
- React / Angular
- TypeScript
- Tailwind CSS · shadcn/ui
- Astro (static & hybrid sites)
Data & AI
- LLM / RAG (Microsoft Azure, Claude API, OpenAI)
- PostgreSQL · pgvector
- Docker · CI/CD
- System architecture & integrations
The contexts I work in
Industries
- Pharma & healthcare
- Banking & finance
- Retail & e-commerce
- Sports & events
- Manufacturing & logistics
- Fine dining
- Business services
Mission types
- POC / MVP in 2 to 6 weeks
- Full business application (portal, dashboard, internal tool)
- Enhancement of existing business application (stack-dependent)
- AI/LLM integration (Azure AI Foundry, Claude API, OpenAI)
- Custom AI chatbot / assistant
- Business workflow automation
- Technical audit and recommendations
What you gain from working with a senior directly
Zero middlemen
No sales rep, no project manager buffer. You talk directly to the person who writes the code. Every technical decision is made with full understanding of your business.
Fixed price, no surprises
Detailed quote with scope, timeline and deliverables. No day-rate counter ticking, no agency margin, no platform commission. You know exactly what you're paying before we start.
AI as a real lever
I use AI (Claude, RAG, LLM) daily in my development work. I can show you concretely what it changes — not just talk about it. And every AI usage is contractually framed: providers, processed data, hosting — everything is defined in a legal framework agreed between parties.
Your code, zero lock-in
On delivery, you receive the source code, technical documentation and all access credentials. No lock-in, no proprietary licenses. And if you need support after going live, I remain available for ongoing maintenance. Learn more
From first call to production
Discovery call (45 min)
We discuss your needs, context and constraints. No pitch, no slides — just a technical conversation with the person who will do the work.
Clear proposal
You receive a detailed quote with scope, timeline, tech stack and deliverables. Fixed price, fully transparent.
Development & delivery
Short iterations, regular demos, versioned code. You have visibility at every step. At the end, the code is yours — documentation included.
Have a project in mind?
45 minutes of conversation, no commitment. No sales rep — just a senior developer who listens and responds.