Postúlate en Kit Empleo: kitempleo.com.ar/empleo/q1anf

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 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:
Internship
Duration:
3 months with potential for extension
The Role
As an opportunity to learn from and partner with our SF-based Engineering team, we're looking for frontend, backend and mobile engineering interns to help design, build, and optimize user-facing features for our next-generation web applications. You'll work closely with our product, design, and backend teams to bring intuitive, performant, and accessible experiences to life. The adecuado candidate is passionate about clean code, enjoys solving product and engineering challenges, and thrives in a fast-paced, remote-first environment.
Responsibilities
Build seamless and secure frontend features and user experiences across web, mobile and CLI (e.g., TypeScript, Next.js, CSS, Rust, React, React Native, Swift, Kotlin).
Translate Figma designs into pixel-perfect, accessible, and responsive interfaces
Compile and integrate Rust-based zkVM components into web applications using WebAssembly.
Maintain blockchain infrastructure components including RPC endpoints, explorers, and developer tooling.




Iterate rapidly based on developer feedback and usage data to improve usability and performance across the ecosystem.
Optimize for performance, usability, and browser compatibility
Participate in code reviews, architectural discussions, and continuous improvement initiatives
Communicate clearly in a distributed team environment (Slack, Notion, GitHub, Linear)
Requirement: Must possess fluency in Business English (spoken and written)
You Might Be a Fit If You Have
Proficiency in JavaScript/TypeScript and React
Experience writing, testing or auditing Solidity-based smart contracts adhering to security best practices.
Comfort working with API layers, including authentication flows
An eye for detail and care for UX, animations, and interaction design
Familiarity with Git workflows and remote collaboration tools
Pursuing a degree or recently graduated from university
Bonus Points
Experience in Web3
Experience with full-stack development (Node.js, PostgreSQL, Prisma)
Familiarity with feature flagging, analytics, or A/B testing infrastructure
Experience in compiling and integrating Rust-based zkVM components into web applications using WebAssembly.
Write, test, and audit Solidity-based smart contracts adhering to security best practices.
Why Join Us
Work on high-impact, user-facing products in an ambitious startup environment
Collaborate with experienced engineers and product builders
Fast-moving projects and clear technical ownership

Postúlate en Kit Empleo: kitempleo.com.ar/empleo/q1anf

📌 Intern Software Engineer (Argentina) (Buenos Aires)
🏢 Nexus
📍 Buenos Aires