Senior Blockchain Engineer Wallet Infra

🚀 Senior Blockchain Engineer (Wallet + Infrastructure)

We’re hiring a senior full-stack blockchain engineer to take a multi-chain wallet platform from advanced development to secure, live production.

🎯 What You’ll Do
Ship a production-ready wallet across web, mobile, extensions, and desktop
Implement multi-chain support (BTC, SOL/SPL, EVM, Cosmos-based)
Build and harden backend infrastructure (Postgres, Redis, indexers, job queues)
Deliver WalletConnect, QR flows, and hardware wallet integration (Ledger/Trezor)
Implement cross-chain swaps/bridges and token support (incl. custom token standards)
Ensure security, reliability, and scalability across the entire system

🧩 Key Responsibilities
Complete send/receive flows and transaction lifecycle handling
Build and optimize indexers and portfolio services
Implement secure key storage across platforms
Integrate WalletConnect and dApp interaction flows
Develop swap + bridge routing and tracking
Design and maintain backend APIs and database systems
Own production deployment, monitoring, and scaling

🛠 Requirements
5+ years experience in backend/full-stack engineering
Strong blockchain experience:
EVM (Ethereum, BNB, etc.)
Solana
Bitcoin
Cosmos, Lithosphere (preferred)
Experience building wallets, DeFi apps, or blockchain infrastructure
Strong understanding of security best practices

➕ Nice to Have
Hardware wallet integration experience (Ledger/Trezor)
WalletConnect or dApp ecosystem experience
Experience with indexers, RPC infrastructure, or chain data pipelines
Mobile or extension development experience

📦 Tech Stack
Node.js / TypeScript (backend + SDK)
Postgres + Redis
React / React Native
Docker / cloud infrastructure

🎯 Outcome
You will deliver a secure, scalable, production-grade multi-chain wallet platform ready for public launch.

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