Engineering Lead (Crypto/DeFi)

Engineering Lead - Crypto and DeFi

Company

KAST

Conditions

20 hours agoLead United States, Remote (New York preferred) Remote Engineering Jobs by KAST

Skills

Collateral Management Hardware Wallet Onchain Swap Offchain Multisig Transaction Management Yield Strategy Staking Solana Evm Mpc Node.Js Architecture Lending Borrowing Security Defi Aws Database Mentorship Python Protocol Integration Liquidation Go Rust Solidity Liquidity Aggregation Api Distributed System Blockchain Communication Wallet Smart Contract

About the Role

You will own the DeFi and onchain product stack end-to-end. You will design and build backend services, blockchain integrations, and transaction infrastructure, ensuring secure interaction with smart contracts, wallets, and custody systems. You will drive technical direction, review code, ensure reliability and security, and mentor engineers as the team scales. You will collaborate with product and design to deliver high-quality user-facing financial products.

Requirements

• 8+ years of software engineering experience with experience leading technical projects or teams
• Strong backend engineering experience in Go, Python, or Node.js
• Experience building production systems that integrate with blockchain networks
• Familiarity with Solana and/or EVM-compatible chains
• Strong understanding of DeFi systems including lending and borrowing protocols, swaps, liquidity aggregation, and yield strategies
• Knowledge of DeFi risk mechanics such as collateral management, liquidations, staking, and yield generation
• Experience designing APIs, distributed services, and database-backed systems
• Experience building or operating cloud-based systems (AWS or similar)
• Strong communication skills and ability to drive engineering execution in a fast-moving environment
• Nice to have: smart contract development experience (Solidity, Rust, or similar)
• Nice to have: experience integrating with custodial and non-custodial wallet solutions
• Nice to have: exposure to cross-chain infrastructure or multi-chain architectures
• Nice to have: experience with frontend technologies such as React or Next.js
• Nice to have: familiarity with AI-assisted development tools (Copilot, Cursor, agentic workflows)

Responsibilities

• Own the DeFi architecture across backend services, blockchain integrations, and supporting systems
• Build and integrate DeFi products including lending, borrowing, yield, and liquidity strategies
• Design secure blockchain interactions including wallet infrastructure, signing flows, and custody integrations (MPC, multisig, hardware wallets)
• Develop backend systems for transaction management, protocol integrations, and onchain/offchain coordination
• Define architecture, review code, and ensure systems remain reliable, scalable, and secure
• Hire and mentor engineers and establish strong technical standards
• Collaborate with product and design to deliver user-facing financial products

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