Responsibilities

- Own full stack development across React interfaces, Node.js services, and Web3 integrations.
- Build and scale decentralized applications integrating wallets, DeFi protocols, and on-chain data.
- Integrate Web3 libraries, SDKs, packages, and APIs into reliable product workflows.
- Design systems for performance, security, scalability, and interoperability.
- Build and improve infrastructure supporting large volumes of real-time market and blockchain data.
- Investigate production issues and improve system reliability.
- Collaborate on architecture and research into emerging technologies.
- Take features from technical design through implementation, deployment, and production support.

Requirements

- 10+ years of professional software development experience.
- At least 3 years of full stack development experience with a strong Web3 focus.
- Strong proficiency in TypeScript, React, and Node.js.
- Hands-on experience shipping Web3 applications or integrations into production.




- Experience integrating wallets, DeFi services, on-chain data, and third-party Web3 packages or APIs.
- Experience designing and scaling data-intensive systems.
- Strong architectural judgment and a practical approach to performance, security, and reliability.
- Fluent English and the ability to work independently, communicate clearly, and take ownership.
- Nice-to-have experience with multi-chain development across Ethereum and Solana.
- Nice-to-have experience with Prisma, Zod, tRPC, and Fastify.

Benefits

- Fully remote work with adaptable hours.
- Competitive compensation based on experience.
- Collaboration with highly experienced engineers.
- Significant technical ownership and autonomy.
- Opportunity to build core infrastructure and products in the Web3 space.
- Full-time position with a demanding startup environment and few meetings.

📌 Senior FullStack Developer (España)
🏢 G2i
📍 España