Senior Blockchain Engineer | Full-Stack Web3 Developer | DeFi Builder
📍 Berlin, Germany
📧 Email: addis.bel@gmail.com
🔗 GitHub · LinkedIn · Twitter/X · Telegram
I’m a Senior Blockchain Engineer with 5+ years of experience building secure, production-grade DeFi protocols and full-stack Web3 applications.
I specialise in:
- Solidity smart contract architecture
- DeFi protocol design & lending systems
- Gas optimisation & security-first development
- End-to-end Web3 systems (contracts → indexers → frontend)
I’ve co-developed protocols that:
- 💰 Reached $40M+ TVL
- ⚡ Processed $600K+ in loans on launch day
- 🔐 Achieved 9/10 external audit ratings
- ⛽ Reduced gas costs by ~70% via off-chain order design
I enjoy building scalable, efficient, and secure blockchain systems.
- Solidity (5+ years)
- Foundry (Forge, Anvil, Cast)
- Hardhat, Truffle
- OpenZeppelin (Upgradeable Proxy Pattern)
- Ethers.js, Web3.js
- Subgraph, SubSquid
- Slither
- Echidna
- Foundry Fuzzing
- Non-reentrancy protections
- Multi-signature wallets
- TypeScript / JavaScript
- React.js, Next.js, Svelte
- Node.js
- GraphQL
- Supabase
- Docker
- AWS Lambda
- GitHub Actions (CI/CD)
- Codecov
- Tenderly
- Forta
- Clean & readable smart contract design
- Security-first engineering
- Gas efficiency
- Strong testing & audits
- Long-term maintainable DeFi systems
- Web3 / DeFi engineering roles
- Backend & Full-Stack Web2 roles
- Blockchain, fintech, and SaaS products
- Remote or Germany-based teams
⭐ If you’re looking for a versatile engineer who can operate across Web3 and Web2, feel free to reach out.