TechsBCN

Remote backend engineer for a DeFi/Web3 team: designs and implements secure Ethereum smart contracts (Solidity), builds robust APIs to integrate services with blockchains, and optimizes the scalability and security of decentralized applications using Solidity, Go, Rust, or Node.js.

API Blockchain DeFi Ethereum Node.js +5 skills

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TechsBCN

6 days ago

Desarrollador Backend Blockchain Senior Remoto

New EuropeSenior

Spain

100% remote senior blockchain backend developer role focused on DeFi and Web3 solutions. The developer designs, develops and implements smart contracts and secure APIs, collaborating with frontend and product teams on scalability and performance, using Solidity, Go, Rust or Node.js.

API Blockchain DeFi Node.js Rust +2 skills

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TechsBCN

last week

Developer Backend Senior .Net (+6 Años & España)

EuropeSenior

Spain

Desarrollador Backend Blockchain (Remoto) Nuestro cliente busca un Desarrollador Backend Blockchain para unirse a su equipo de ingeniería de forma remota. Serás clave en el diseño, desarrollo y mantenimiento de…

API Blockchain DeFi Web3

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TechsBCN

2 weeks ago

Developer Backend Senior .Net

EuropeSenior

Spain

Senior .NET backend developer (6+ years) for TechsBCN, a Spanish team specialized in web & Microsoft technologies. Day to day: building .NET Framework/Core backends with DDD and design patterns, CI/CD in DevOps, REST/SOAP integrations, and unit/E2E testing (Selenium, SpecFlow). Spanish required; remote or hybrid from Barcelona.

CI/CD DevOps .NET Selenium SOAP

Desarrollador Backend .NET Senior – Remoto/Híbrido

Open 41d EuropeSenior

Spain

Senior .NET backend developer (6+ years of experience) building services using domain-oriented architectures and CI/CD at a Spanish tech company, with remote or hybrid work options. Offers a permanent contract; requires intermediate English and Spanish work authorization.

CI/CD .NET

30K – 46K €