thecosmos
Backend & Blockchain Developer
I build and run backend services and blockchain systems: APIs, databases, jobs, and smart contracts. Day-to-day stack includes TypeScript (Nest.js, Express), Go, Python, PostgreSQL, Redis, and MongoDB. On-chain work: Solidity, Rell (Chromia), subgraphs, and zero-knowledge tooling (e.g. Circom). I have led small teams and shipped production products in fintech-style and governance use cases.
Experience: 5 years
Yearly salary: $60,000
Hourly rate: $30
Nationality: 🇹🇷 Turkey
Residency: 🇹🇷 Turkey
Experience
Co-Founder, Tech Lead
Choz/MinaFoundation 2023 - 2024
Designed a privacy-oriented exam flow using zero-knowledge proofs, in collaboration with Mina Foundation. Backend: Express.js, Redis, Bull, MongoDB—APIs and job processing for the product. UML and written specs so the team and Mina Foundation stayed aligned. ETHGlobal Istanbul—3rd place; grant from Mina Foundation.
Blockchain Lead Engineer
LEXIT 2022 - 2022
Smart contracts and overall architecture for dapps; Solidity. Documentation and diagrams to support the engineering team. Weekly status on outsourced work and delivery.
Backend & Blockchain Developer
Melexsoft 2021 - 2022
Backend: Ruby on Rails, GraphQL for NFT marketplace products. The Graph subgraph to index marketplace smart contracts. Solidity for the NFT marketplace contract layer.
Skills
ai
blockchain
golang
javascript
nestjs
solidity
node
english
turkish