About
Semih Civelek
Privacy & payment protocol engineer
I design and ship production systems at the intersection of zero-knowledge proofs, fully homomorphic encryption, and programmable payments.
My work lives where cryptography meets payments. I build protocols that keep balances, orders, and identities private by default while keeping settlement, liquidity, and attribution verifiable.
I have shipped cross-chain privacy pools, FHE prediction markets, agent-payment protocols, and a treasury app on Canton. Most of that work lives on the Projects page, with the problem, the approach, and the outcome for each.
Skills
Cryptography
- ZK (Groth16, Circom)
- FHE (Zama fhEVM)
- Poseidon / Merkle trees
- ECDH stealth addresses
Smart contracts
- Solidity
- Daml / Canton
- Hardhat
- Foundry
Payment rails
- x402
- MPP
- Circle CCTP V2 / Nanopayments
- LayerZero V2
- Miden SWAP notes
Frontend
- Next.js
- TypeScript
- Tailwind
- GSAP / Three.js
Contact
The fastest way to reach me is email or X. I'm open to protocol design, cryptography engineering, and production-grade smart-contract work.