Senior FullStack Developer

Senior Full Stack Developer — Web3 Remote — International | Full-time Salary - up to 90k USD. G2i is recruiting a Senior Full Stack Developer for Moonberg, a Zug-based intelligence lab building proprietary market intelligence and infrastructure for decentralized markets.

• 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 with experienced engineers on architecture and research into emerging technologies.
• Take features from technical design through implementation, deployment, and production support.

• 10+ years of professional software development experience.
• At least 3 years of full stack development experience with a strong Web3 focus.
• Strong proficiency in Type Script, 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.
• The ability to work independently, communicate clearly, and take ownership in a fast‑moving startup.

• Multi‑chain development experience, ideally across both Ethereum and Solana.
• Experience with Prisma, Zod, tRPC, and Fastify.

Moonberg operates with a fully senior team, few meetings, and a direct, execution‑focused culture. Engineers have substantial ownership and are expected to move quickly while maintaining high technical standards. The pace is demanding, and this is not a conventional 9‑to‑5 environment. The role suits someone comfortable with startup intensity, broad responsibility, and accountability for production outcomes.

• Fully remote work with flexible hours.
• Competitive compensation based on experience.
• Collaboration with highly experienced engineers.
• Significant technical ownership and autonomy.
• The opportunity to build core infrastructure and products in the Web3 space.