Node.js Jobs in Web3

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Job Position Company Posted Location Salary Tags

Nexus

Buenos Aires, Argentina

$157k - $175k

Keyrock

London, United Kingdom

$85k - $102k

Bitgo

Remote

$126k - $132k

Belmont Lavan

United States

$122k - $150k

Animoca Brands Limited

Dubai, United Arab Emirates

$90k - $150k

Belmont Lavan Ltd

United States

$90k - $105k

Helio

London, United Kingdom

$124k - $150k

O1labs

Remote

$88k - $150k

Improbable

London, United Kingdom

$100k - $118k

NICK AI

Remote

$80k - $130k

NICK AI

Remote

$80k - $140k

NICK AI

Remote

$100k - $180k

sigmasoftware2

Lviv, Ukraine

$122k - $150k

Provable

San Francisco, CA, United States

$90k - $90k

Binance

Bangkok, Thailand

Nexus
$157k - $175k estimated
Buenos Aires Argentina
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About Nexus

Nexus is innovating at the intersection of artificial intelligence, blockchain, and zero-knowledge cryptography to build a Layer 1 for the AI era. Our team of world-leading experts is developing the Nexus Layer 1 blockchain, Nexus zkVM, and other breakthrough products with the goal of creating a verifiable financial world.

Nexus has raised $25M in Series A funding from Lightspeed, Pantera, Dragonfly, SV Angel, and more.

Location: Remote (commutable distance to Buenos Aires)
Type: Contract

Duration: 12 months with potential for extension

The Role

We’re expanding our backend engineering team in Latin America to design and deliver the infrastructure behind Nexus’s Layer 1 and its native DEX. As a Backend Engineer, you’ll build the systems and services that make verifiable trading, settlement, and financial data possible — ensuring reliability, speed, and transparency at scale.

You’ll collaborate with protocol, product, and frontend teams in San Francisco while contributing remotely from Argentina or Mexico.

What You’ll Do

  • Design and build backend services in Node.js and Rust for Nexus’s Layer 1 and DEX.

  • Develop APIs and data pipelines for trading, liquidity, and on-chain verification.

  • Build and maintain blockchain infrastructure components (RPC endpoints, explorers, dev tools).

  • Optimize performance and scalability across distributed systems.

  • Collaborate with frontend engineers to define data contracts and API interfaces.

  • Write clean, well-tested code that supports verifiable financial applications.

What We’re Looking For

  • Strong experience developing backend systems in Node.js, Rust, or similar languages.

  • Proficiency with PostgreSQL, Prisma, or equivalent data stores.

  • Understanding of API design, authentication flows, and performance optimization.

  • Experience with distributed systems, financial infrastructure, or blockchain.

  • Excellent communication skills in Business English (spoken & written).

Bonus Points For

  • Experience building or scaling financial systems (exchanges, payments, clearing).

  • Familiarity with blockchain architectures, smart contracts, or consensus protocols.

  • Exposure to DevOps tooling (Docker, Kubernetes, Terraform, AWS).

  • Experience in high-performance or low-latency system design.

Why Join Us

  • Build the backend systems powering the Layer 1 for Verifiable Finance.

  • Collaborate with experts across blockchain, AI, and financial infrastructure.

  • Shape the foundation for a verifiable, transparent, global trading system.

  • Thrive in a fast-moving, high-impact engineering environment.

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Apply Now

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.