Node.js Jobs in Web3

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Job Position Company Posted Location Salary Tags

Kast

United States

$122k - $150k

Coins.ph

Manila, Philippines

$96k - $150k

InfStones

Texas

$122k - $150k

Bcbgroup

Remote

$122k - $141k

Bcbgroup

Remote

$59k - $80k

Kraken

London, United Kingdom

$90k - $100k

Bitmex

Remote

$112k - $115k

Shakepay

Montreal, Canada

$150k - $190k

Shakepay

Montreal, Canada

$98k - $150k

Bitgo

Remote

$180k - $220k

Bitgo

Remote

$165k - $210k

Lemon.io

Canada

SwapRail

Remote

SwapRail

Remote

Tether Operations Limited

Dublin, Ireland

$105k - $120k

Kast
$122k - $150k estimated
United States

About KAST

KAST is redefining what it means to bank with stablecoins - think Revolut, rebuilt from scratch on Web3. Backed by top-tier VCs, we’ve grown from 0 to 1 million users in under a year. We’re building the next-gen global bank based entirely on stablecoins.

Design is at the heart of everything we do - it’s how we simplify the complex, make money feel easy, and turn crypto skeptics into brand ambassadors.

The Role

We’re hiring a Tech Lead to own our DeFi and onchain product stack end-to-end. You’ll lead the architecture and development of systems that power our asset management, lending/borrowing, and earn products.

This role is highly hands-on. You’ll design and build backend services, blockchain integrations, and transaction infrastructure while ensuring secure interaction with smart contracts, wallets, and custody systems.

You’ll also help grow the engineering team as we scale — setting technical direction, mentoring engineers, and establishing strong engineering practices.

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What You’ll Be Doing

  • 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.
  • Lead engineering execution — define architecture, review code, and ensure systems remain reliable, scalable, and secure.
  • Hire and mentor engineers as the team grows, establishing strong technical standards.
  • Collaborate closely with product and design to deliver high-quality user-facing financial products.

What You'll Bring

  • 8+ years of software engineering experience, with experience leading technical projects or teams.
  • Strong backend engineering experience in one or more of the following:
    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/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.

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Nice to have:

  • Experience with smart contract development (Solidity, Rust, or similar).
  • Experience integrating with custodial and non-custodial wallet solutions.
  • Exposure to cross-chain infrastructure or multi-chain architectures.
  • Experience with frontend technologies such as React or Next.js.
  • Experience scaling engineering teams in a high-growth startup environment.
  • Familiarity with AI-assisted development tools (Copilot, Cursor, agentic workflows).

Why KAST?

How To Apply?

Please send your resume to [email protected]

At this time, we receive a lot of applications, so please bear with us to hear back from us.

Interview Process

What does a Node.js developer in web3 do?

A Node developer in web3 is a software developer who specializes in creating and maintaining applications built on the Node.js platform and using web3 technology

Web3 is a term that refers to the collection of technologies and protocols that make up the decentralized web, also known as the Internet of value

This includes blockchain technology, peer-to-peer networking, and other technologies that enable users to exchange value and data in a decentralized manner

As a Node developer in web3, some of the responsibilities might include:

  • Developing and maintaining web3 applications using Node.js
  • Writing and testing code for smart contracts on blockchain platforms
  • Implementing security measures to protect the integrity and confidentiality of data on the decentralized web
  • Collaborating with other team members to design and implement web3 solutions
  • Troubleshooting and debugging issues with web3 applications
  • Staying up-to-date with the latest developments and best practices in the web3 ecosystem.