Position: Blockchain Developer (a)
Company: Freelance
Category: DevOps
Experience required: 3y
English level: intermediate

This company is highly specialized in the field of high-performance financial systems, as well as we have expertise in the development of payment systems, aggregates, terminals, and gateways.

✅ **Main stack:**
- Node.js (3+ years), Type-Script, Nest.js, Postgres (Sequеlize ORM), Mongo, REST/RPC, RMQ.

✅ **Skills:**
- 3+ years experience of Node.js, REST/RPC, RMQ, TypeScript, Nest.js, 
- 2+ years experience of Web3 fundamentals;
- crypto skills (2+ year);
- Web3 fundamentals;
- experience with Ethereum, Bitcoin(and forks), Tron, Cardano, Stellar: consensus, network practices, libs, accounting models, smart-contracts interaction features of each of the blockchains (resources, transaction scheme, etc);
- Key-pairs generation mechanisms, HD wallets.

**Will be a plus:**
- development of payment gateways for crypto products (wallets or exchanges);
- interesting experience in working with crypto (DeFi, NFT, Mining);
- solidity;
- open-source crypto projects.

✅ **Benefits:**
- medical insurance;
- paid courses, conferences, training sessions, workshops etc;
- English classes;
- sport compensation.