Backend Developer (Web3)

• Develop backend services and APIs using Node.js, TypeScript, and related frameworks.
  

• Interact with blockchain networks (e.g., Ethereum, Polygon, Solana) to support on-chain operations.
  

• Design systems for secure wallet interactions, transaction signing, and data processing.
  

• Build and optimize database structures (PostgreSQL, MongoDB, or similar).
  

• Ensure application security, scalability, and performance.
  

• Collaborate with frontend and smart contract developers for seamless integration.
  

• Maintain best practices for code quality, testing, and documentation.

Must-have

• 5+ years of backend development experience.
  

• Proficiency with Node.js, TypeScript, and RESTful API design.
  

• Familiarity with Web3 libraries (e.g., Ethers.js, Web3.js).
  

• Experience with database design and optimization (SQL or NoSQL).
  

• Knowledge of authentication mechanisms and secure data handling.
  

• Fluent in English. Spanish is a plus.
  

Nice-to-have

• Understanding of smart contract architecture and event indexing.
  

• Experience with queuing systems or event-driven architecture.
  

• Familiarity with blockchain infrastructure services (Infura, Alchemy, Moralis, etc.).
  

• Exposure to testing and deployment pipelines (CI/CD, Docker).

• Fully remote work with real autonomy and global collaboration.
  

• Paid time off, birthday leave, and personal days.
  

• Continuous learning: English classes, internal workshops, and training discounts.
  

• Holistic well-being: psychological support, wellness activities, and access to 2,500+ lifestyle benefits.