Frontend Engineer (Contract, Buenos Aires)

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 frontend engineering team in Latin America to build next-generation interfaces for the Nexus ecosystem. As a Frontend Engineer, you’ll design and deliver intuitive, high-performance user experiences for our DEX, developer tools, and verifiable finance applications — making complex financial systems transparent and accessible.

You’ll collaborate with product, backend, and protocol teams in San Francisco while contributing remotely from Argentina or Mexico. We move fast, ship often, and expect engineers to take full ownership of their work.

What You’ll Do

• Build responsive, performant web applications in React and TypeScript.
• Create interfaces for our enshrined DEX, analytics dashboards, and developer tooling.
• Integrate APIs and blockchain services to surface verifiable on-chain data.
• Implement interactive visualizations for trades, liquidity, and transaction flows.
• Collaborate closely with design to deliver polished, intuitive user experiences.
• Iterate quickly based on real-world feedback from traders and developers.
  
  

What We’re Looking For

• Strong experience building production React/TypeScript applications.
• Solid understanding of web performance, state management, and component architecture.
• Comfort integrating backend APIs and blockchain or financial data sources.
• A sharp eye for UX, interaction design, and visual clarity.
• Excellent communication skills in Business English (spoken & written).
  
  

Bonus Points For

• Experience with financial applications, trading interfaces, or data visualization.
• Familiarity with Node.js, Rust, or WebAssembly.
• Experience in Web3 or blockchain-based systems.
• Background at high-impact startups or fast-paced environments.
  
  

Why Join Us

• Build the interfaces powering the next generation of verifiable financial systems.
• Collaborate with world-class engineers, designers, and researchers across continents.
• Help define how users experience an on-chain DEX embedded in a Layer 1.
• Thrive in a fast-paced, ambitious environment where ownership drives growth.