> Markdown version of [/jobs/ext/4696001-senior-backend-engineer-remote-crypto-scalable-apis](https://www.wearedevelopers.com/jobs/ext/4696001-senior-backend-engineer-remote-crypto-scalable-apis). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Backend Engineer - Remote, Crypto & Scalable APIs - **Company:** Plexus Resource Solutions - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Digital Assets, Distributed Systems, Node.Js, TypeScript, Backend, Web3.js, Restful APIs, Microservices - **Published:** November 13, 2026 - **Apply:** https://www.jobleads.com/es/job/senior-backend-engineer-remote-crypto-scalable-apis--spain--e56f424e0ef5dd5a155f17f7157afb0b1 ## About the Role Experience in crypto or Web3 is a plus as the project intersects stablecoins, digital assets and global payments. ## Description Plexus is seeking a Senior Backend Engineer to join their growing fintech team. You will design, build and scale core backend services, focusing on reliability and high-volume financial transactions. You will work with TypeScript and Node.js, APIs, microservices and distributed systems, in a fully remote setup. Experience in crypto or Web3 is a plus as the project intersects stablecoins, digital assets and global payments.