> Markdown version of [/jobs/ext/3911950-desarrollador-backend-blockchain-apis-y-seguridad](https://www.wearedevelopers.com/jobs/ext/3911950-desarrollador-backend-blockchain-apis-y-seguridad). 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). --- # Desarrollador Backend Blockchain | APIs y Seguridad - **Company:** Placements24 - **Location:** León, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Databases, Python (Programming Language), Node.Js, Blockchain, Backend, Golang - **Published:** October 26, 2026 - **Apply:** https://www.jobleads.com/es/job/desarrollador-backend-blockchain-apis-y-seguridad--leon--e4017554483a8cbbfac804a310d0bb4ff ## About the Role The ideal candidate has at least four years of backend experience, proficiency in Go, Node.js, Python, or Java, and a solid understanding of blockchain protocols. ## Description Placements24 is seeking a skilled Backend Blockchain Developer to join its innovative team in León, Guanajuato, MX. You will build and maintain robust backend infrastructure powering decentralized applications, designing APIs, databases, and server-side logic for secure on-chain and off-chain interactions. The ideal candidate has at least four years of backend experience, proficiency in Go, Node.js, Python, or Java, and a solid understanding of blockchain protocols.