[Remote] Blockchain Developer

• Employment Type: Full-time
• Work Model: Remote
• Industry: Web3 / Digital Marketplace

Our client is an innovative technology company developing a Web3-enabled digital marketplace in the automotive sector . The product is currently transitioning from MVP toward a production-ready platform , and we are looking for a Blockchain Developer to build the infrastructure that connects the backend platform with real-time blockchain data. This is a highly hands-on role. You will work across blockchain integration, backend services, data indexing, wallet authentication, and decentralized storage , helping establish a reliable bridge between off-chain marketplace systems and on-chain data.

RESPONSIBILITIES

• Replace simulated repositories with live blockchain integrations using Viem or Ethers.js.
• Build and maintain a Blockchain Indexer to track vehicle transfers, price changes, and escrow updates.
• Implement Sign-In with Ethereum (SIWE) for secure, wallet-based authentication.
• Manage decentralized storage workflows for vehicle documentation and high-res media via IPFS/Pinata.

QUALIFICATIONS

• Backend Expert: Strong proficiency in Node.js, TypeScript, and Fastify.
• Web3 Integration: Extensive experience interacting with JSON-RPC nodes and smart contracts from the backend.
• Data Architecture: Proficiency with Prisma ORM and PostgreSQL for indexing on-chain data.
• DevOps : Experience with Dockerized environments and managing Web3 infrastructure (Infura/Alchemy).

Preferred Skills

• Experience building custom indexers or using The Graph/Subsquid.
• Knowledge of Redis for caching frequently accessed blockchain data.

Tools & Technologies Node.js, TypeScript, Ethers.js, The Graph (Subgraphs), IPFS, Solana Web3.js, Docker, Kubernetes, MongoDB, Redis, PostgreSQL, Chainlink VRF.