Freelance developer specializing in modern showcase sites, web applications, and blockchain. Based in France.
Freelance developer specializing in modern showcase sites, web applications, and blockchain. Based in France.
21 interactive demos to explore modern web technologies. Click, experiment, learn.
Blockchain Explorer
Query a real NITO blockchain node and view the latest mined block in real time.
SHA-256 Hash Lab
Explore Proof of Work mining: hash text with SHA-256 and search for nonces to find rare hashes.
API Response Racer
Race 5 services against each other: which one responds the fastest?
Cryptographic signature
Digitally sign a message and verify its authenticity.
NITO Wallet Generator
Generate a cryptographic keypair and a bech32 NITO address directly in your browser.
End-to-End Encryption
Simulate an encrypted message exchange between Alice and Bob using ECDH and AES-GCM.
Mining Dashboard
Real-time dashboard simulating a NITO mining pool monitoring tool.
Cross-Chain Bridge
Visualize how a bridge transfers tokens between two different blockchains.
Difficulty Simulator
Explore how mining difficulty adjusts based on network hashrate.
BSC Smart Contract Reader
Query a real BEP-20 smart contract on Binance Smart Chain in real time.
Transaction Decoder
Paste a raw transaction hex and decode its structure field by field.
Mempool Aquarium
Watch pending transactions float as bubbles in a virtual aquarium, with real mempool data from the NITO node.
Consensus Comparator
Compare Proof of Work, Proof of Stake, and Delegated PoS side by side.
Proof of Work
Proof of Stake
Delegated PoS
| Metric | PoW | PoS | DPoS |
|---|---|---|---|
| Decentralization | |||
| Speed | |||
| Energy efficiency | |||
| Security |
Network Topology Map
Visualize a P2P network: discover nodes, then propagate a message across the mesh.
Vanity Address Generator
Search for a bech32 NITO address matching your chosen prefix and/or suffix using brute force.
Valid characters: qpzry9x8gf2tvdw0s3jn54khce6mua7l
Target address: nito1q...
Full Stack Architecture
Interactive map of the entire Biigbang0001 ecosystem: 6 projects, all built by one developer.
One developer. Six projects. Full stack.
Every service in this architecture was designed, coded, and deployed by a single freelance developer. From C++ blockchain nodes to React frontends and Node.js infrastructure.
API Security Lab
Explore the security layers protecting every API endpoint: rate limiting, headers, validation, and proxy architecture.
Rate limiting restricts how many requests a single IP can make per minute. Click rapidly to see it in action -- after 30 requests, you get blocked.
Bot Faucet
A simulated faucet bot that sends test NITO to your address.
Encrypted Chat
A real-time E2E encrypted chat using ECDH key exchange and AES-GCM.
Blockchain Time Capsule
Engrave a message in a simulated blockchain using OP_RETURN.
> How I work
A clear, transparent, and iterative process. You know where we stand at every moment.
// pourquoi ce processus ?
Chaque etape est conçue pour eliminer les mauvaises surprises. Vous validez avant que je code, vous voyez avant que je deploie. Un processus iteratif = moins de risques, plus de controle.
Initial call
A free 30-minute call to understand your project, goals, and budget. No commitment.
Proposal within 48h
I send you a detailed quote with scope, timeline, and pricing. Everything is clear before we start.
Iterative development
I code in short sprints with regular demos. You see progress and can adjust in real time.
Testing and validation
Testing on all devices, fixes, and validation with you. Nothing goes live without your approval.
Deployment
Launch on your hosting with domain, SSL, monitoring, and performance optimization.
Follow-up and evolution
I stay available after delivery. Maintenance, adjustments, new features: your project lives on.
> Why me?
What sets me apart and what I bring to your project.
// full transparency
No marketing jargon. Here is concretely what I bring to your project and why it's different from an agency or another freelancer.
One point of contact from A to Z
No middleman, no subcontracting. I am your single contact from the first call to launch.
Widest technical range
From C++ to React, from Solidity smart contracts to VPS deployment. Few freelancers cover this much ground.
Demos, not talk
This site is my business card. 20+ interactive demos prove my skills better than any resume.
Dedicated infrastructure
Personal VPS servers, production blockchain nodes, 24/7 monitoring. No dependency on third-party services.
Transparent pricing
Detailed quotes, no hidden fees. You know exactly what you pay for and why.
Pedagogy included
I explain every technical decision. You understand your project, you don't depend on me.
> Frequently asked questions
Answers to the questions I get asked most often.
// no silly questions
If your question isn't here, ask it directly via the contact form. I reply within 24 hours.
> Packs & pricing
Clear packages tailored to every need. No surprises.
// indicative pricing
Every project is unique. These prices are starting points. The final quote depends on the exact scope, features, and timeline. Everything is discussed during the initial call.
Showcase Site
Presence
Starting from
800EUR
A professional and effective online presence.
- Showcase site up to 5 pages
- Custom responsive design
- Basic SEO optimization
- Contact form
- Launch included
Web App
Product
Starting from
3,000EUR
A complete web application with advanced features.
- Custom web application
- Authentication and user management
- API and database
- Admin dashboard
- 3 months of support included
Dashboard
Efficiency
Starting from
2,500EUR
A dashboard to pilot your business.
- Real-time dashboard
- Data visualization
- Third-party API integrations
- Report exports
Blockchain
Innovation
Starting from
5,000EUR
Custom blockchain and Web3 solutions.
- Solidity smart contract
- Full Web3 interface
- Testnet + mainnet deployment
- Basic security audit
- 3 months of support included
> Contact
Have a project in mind? Let's talk. I reply within 24 hours.
// first contact
The form sends me a message with your project details. I reply within 24 hours with my first impressions and a call proposal. No commitment.