Backend Engineer (Contract - LATAM)
About this role
About Nexus
Nexus is the engine for verifiable finance — a blockchain designed to natively embed the world’s financial system into one compounding system. Built to support every major financial market on a single global exchange, Nexus unifies infrastructure that has historically been fragmented across chains and intermediaries.
Headquartered in San Francisco with a growing presence in Buenos Aires, Nexus is proud to be a cross-continental team of engineers, cryptographers, and market builders. We’re investing deeply in the Latin American ecosystem — and always looking for world-class talent to join us.
Nexus is backed by leading investors, including Pantera, Lightspeed, Dragonfly, Faction, Blockchain Builders Fund, Alliance, and SVA, and works with more than 100 partners across the global finance and blockchain stack.
Location: Remote (Argentina)
Type: Contract
Duration: 12 months with potential for extension
The Role
The Role
We're expanding our backend engineering team in Latin America to build the infrastructure behind Nexus's Layer 1 and its native DEX. We're hiring Backend Engineers at multiple levels — from junior to senior — so if you build reliable, high-performance systems and care about the intersection of finance and decentralized infrastructure, we want to hear from you.
You'll collaborate with protocol, product, and frontend teams in San Francisco while contributing remotely from Latam
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).
Write clean, well-tested, production-grade code that supports verifiable financial applications.
Contribute to architecture discussions and technical decisions based on your level of experience.
What We're Looking For
Experience building backend systems in a production environment.
Experience with relational databases (PostgreSQL or similar) and API design.
A track record of shipping reliable software and improving the systems you work on.
Excellent communication skills in Business English (spoken & written).
Levels We're Hiring
Junior 1–3 years - Solid foundations, eagerness to grow, guided ownership
Senior 5+ years - System design leadership, cross-team impact, mentorship
Bonus Points For
Experience in financial systems (exchanges, payments, clearing, or settlement).
Familiarity with blockchain architectures, smart contracts, or consensus protocols.
DevOps experience (Docker, Kubernetes, Terraform, AWS).
Web3 or DeFi protocol development experience.
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.
Company at a glance
Traditional blockchains were designed for human users. Nexus Laboratories is building the verifiable infrastructure required for a future increasingly mediated by AI-powered systems and applications.
As the core development team behind Nexus, we have engineered a next-generation blockchain purpose-built for verifiable finance and the emerging AI economy. Powered by the advanced Nexus zkVM and a unique dual-core architecture, our network enables autonomous agents, intelligent markets, and high-performance DeFi applications to execute with cryptographic trust at global scale.
The Nexus Ecosystem Architecture
The Nexus Layer 1: A parallel, EVM-compatible chain with a built-in financial engine.
The Nexus Exchange: An enshrined native coprocessor for ultra-low latency, verifiable execution.
USDX: A native, institutional-grade margin stablecoin fully backed by U.S. Treasuries.
Capping off a highly successful testnet phase that mobilized 3.2M+ verified users and generated over 77B zero-knowledge proofs, Nexus has officially launched its mainnet and native token ($NEX). We are rapidly expanding our ecosystem to support the next generation of financial and AI applications.
Core Focus Areas: Layer 1 Blockchain • Zero-Knowledge Proofs (zkVM) • Agentic Finance • Enshrined Coprocessors • Web3 Infrastructure
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