Backend Engineer (Contract, Buenos Aires)
NexusArgentina22 hours ago
ContractRemote FriendlyEngineering, Information Technology
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About Nexus
Nexus is building the foundation for verifiable finance, an economic system where every transaction, order, and settlement can be proven on-chain with cryptographic assurance. To do this we’re developing a DEX Layer 1 blockchain purpose-built for the AI economy, powered by idle compute from millions of people around the world, and verified with zero-knowledge proofs. This is finance rebuilt for the future: verifiable, scalable, and open to all.
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
Nexus is building the foundation for verifiable finance, an economic system where every transaction, order, and settlement can be proven on-chain with cryptographic assurance. To do this we’re developing a DEX Layer 1 blockchain purpose-built for the AI economy, powered by idle compute from millions of people around the world, and verified with zero-knowledge proofs. This is finance rebuilt for the future: verifiable, scalable, and open to all.
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.
- 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).
- 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.
- 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.
Key Skills
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