Node.js Jobs in Web3

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Job Position Company Posted Location Salary Tags

Dogsolutions

New York, NY, United States

$250k - $300k

Launchpadtechnologiesinc

Remote

$91k - $97k

Bitgo

Remote

$180k - $220k

Bitgo

Remote

$180k - $220k

Bitgo

Remote

$200k - $230k

Bitgo

Remote

$180k - $220k

BULK Labs

Singapore, Singapore

$71k - $105k

Weekday AI

Bengaluru, India

$105k - $112k

Bcbgroup

Remote

$59k - $80k

Bcbgroup

Remote

$59k - $80k

Layerzerolabs

Remote

$86k - $110k

Launchpadtechnologiesinc

Remote

$63k - $100k

SafeGlobal

New York, NY, United States

$122k - $138k

Bloxstaking

Remote

$72k - $100k

About Wildcat

Wildcat is an Ethereum protocol revolutionizing on-chain credit with an innovative, under-collateralized borrowing solution. Our mission is to lead this market by enabling borrowers to create, customize, and manage credit facilities in a more transparent, efficient, and secure environment. Borrowers can tailor their credit demand to suit their needs. Designed for sophisticated participants in both TradFi and DeFi, Wildcat is committed to transforming on-chain credit and unlocking more efficient, customized solutions in decentralized finance.

Working for Wildcat 

As a Senior Smart Contract Engineer, you will drive the technical evolution of Wildcat’s under-collateralized lending platform. You’ll concentrate on Solidity and back-end services—building the core market contracts, the optional transaction hooks that extend them, and the adapters that let external DeFi protocols plug into our credit markets—then assist with wiring everything into a Node.js/TypeScript stack. Leveraging agile practices and DeFi expertise, you’ll shape the platform’s architecture, feature set, and scalability in close collaboration with the team, ensuring Wildcat stays at the forefront of under-collateralized on-chain credit.

Responsibilities

   Smart-Contract & Protocol Development

  • Design immutable market contracts plus optional hook modules that gate deposits, withdrawals, rate changes, sanctions checks, and liquidation callbacks.
  • Build adapter contracts and wrappers so Wildcat positions expose a widely-supported ERC interface, making them plug-and-play collateral or yield assets in external protocols.
  • Build modular access-control contracts that verify lender eligibility - using Merkle whitelists, soul-bound credentials, or zero-knowledge attestations - and include automated expiry and renewal logic to keep the whitelist current. 
  • Optimize storage and opcode paths; benchmark gas and apply EIP-5656-style tricks.
  • Orchestrate multichain releases — deterministic deployments to mainnet and leading L2s/side-chains, with chain-specific parameters, address registries, and automated roll-out scripts.
  • Build cross-chain messaging / bridge flows to keep Wildcat credit events and adapter states in sync across networks; own monitoring and fail-over run-books.


   Back-End Development

  • Build lightweight Node.js/TypeScript services plus GraphQL / REST APIs that expose contract actions and analytics.
  • Author subgraphs or custom indexers to surface reserve ratios, delinquency data, and cross-protocol collateral metrics in real time.

   Testing & Security

  • Own a Foundry test-bed: unit, fork, invariant, and fuzz tests covering market logic, hook paths, and cross-protocol interactions.
  • Lead threat modelling and coordinate external audits; integrate the Sentinel sanctions flow, and design immutable incident-response playbooks that protect users without relying on a global pause or stop-button.

   Deployment & ChainOps

  • Automate deterministic deployments to testnets and mainnet via CI (GitHub Actions, Docker).
  • Manage multisig operations, adapter-whitelisting scripts, and incident-response tooling.

   Requirements

  • 4 + years Solidity with mainnet-deployed contracts—ideally in lending, credit, or other high-TVL verticals.
  • Proven skill in hook patterns (delegatecall, minimal proxies) and cross-protocol adapter design; comfortable operating without proxy upgrades.
  • Deep expertise with Foundry testing, gas profiling, and CI pipelines.
  • Ability to spin up lean Node.js/TypeScript back-ends and PostgreSQL schemas that ingest on-chain events.
  • Security-first mindset: you track exploits, write audit-ready specs, and mitigate oracle or reentrancy risks (experience with Prisma and other type-safe data tools is a plus).
  • Clear written & verbal English communication in a distributed, EU-centric team.
  • Proven experience shipping and managing Solidity contracts on multiple EVM chains (mainnet, rollups, side-chains) and integrating at least one cross-chain messaging or bridge protocol.

What We Offer

  • Impact & Ownership – shape a protocol redefining private credit.
  • Cutting-Edge Work – collaborate with seasoned DeFi and TradFi experts at the intersection of risk, composability, and compliance.
  • Remote Flexibility – work from anywhere; core collaboration overlaps with EU hours.
  • Competitive Compensation – salary in crypto or fiat, plus meaningful equity upside.
  • Professional Growth – budget for conferences, audits, courses, and hackathons.

You can send your application to: [email protected]

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.