Backend Jobs in Web3

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Job Position Company Posted Location Salary Tags

Nexus

Buenos Aires, Argentina

$157k - $175k

Bitgo

Remote

$126k - $132k

BitKernel

Austin, TX, United States

$91k - $180k

Truelogic

Panama

$104k - $109k

LI.FI

Remote

$90k - $130k

LI.FI

Remote

$120k - $170k

Keyrock

Brussels, Belgium

$84k - $90k

NICK AI

Remote

$80k - $130k

NICK AI

Remote

$80k - $140k

Binance

Hong Kong, Hong Kong

Crypto.com

Hong Kong, Hong Kong

$90k - $109k

Kraken

United States

$127k - $203k

Blockchain

Remote

$75k - $85k

Wintermute

Remote

$36k - $62k

Cryptio

United Kingdom

$90k - $100k

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 back-end developer in Web3 do?

A back-end developer in web3 typically works on the server-side of a web application, using technologies that are specific to the decentralized web (also known as Web3-related)

This might involve building and maintaining the infrastructure that supports decentralized applications (dApps), or developing the underlying smart contracts and blockchain-based systems that power those dApps

In general, the goal of a back-end developer in web3 is to create the technologies and tools that enable users to interact with the decentralized web in a secure and seamless way.