Lead backend engineer (Node.js)

In collaborations with international DeFi projects, the Hardware Wallet team is improving the crypto security market by creating unique hardware wallets for digital currency.

At this stage, we are developing a cold wallet solution for 1inch, an aggregator of liquidity from decentralized exchanges.

Now we are looking for an experienced lead backend engineer interested in creating new hardware products for the world of cryptocurrencies.

Required work experience: 7+ years overall

Full-time, remote

Responsibilities:

• Development of backend APIs and libraries using Node JS (TypeScript) + NestJS framework;
• Design scalable and cost-efficient backend infrastructure for hardware device
• Monitor system performance (Grafana, Grafana Cloud Logs, Prometheus);
• writing unit/integration/e2e/stress tests
• Conduct technical interviews
• Write technical documentation

Requirements:

• Backend development experience in NodeJS in production;
• Confident knowledge of TypeScript / JavaScript;
• Having experience with Kubernetes and Docker;
• Deep knowledge of SQL/NoSQL databases, file storages and network protocols
• Security best practices
• Experience in managing a technical team
• Basic knowledge in cryptography (hash function, symmetric/asymmetric encryption, digital signatures, key pairs)

Qualifications:

• Must have: NestJS (NodeJS + TypeScript), microservices pattern, Postgres, Redis, S3, message queues, auth protocols
• Good to have: blockchain knowledge, gorush, experience in designing software for hardware devices, CRM