Backend Engineer : Nexus

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

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.

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.