Senior Backend Engineer (Node.JS; 100% remote)💰 Salary: €4,500–€6,000/month🌎100% Remote🕦 Full-time☑️ Contract: B2BWe’re looking for a Senior Backend Engineer to join a forward-thinking, innovation-driven team building cutting-edge solutions in the blockchain and data analytics space.You’ll play a key role in developing scalable backend systems, optimizing performance, and enabling businesses to make smarter, data-driven decisions powered by blockchain technology. This is an exciting opportunity for a proactive engineer who thrives in a remote, start-up environment, enjoys tackling complex technical challenges, and takes ownership of their work from concept to deployment.Requirements4+ years of experience as a Backend Engineer (preferably with Node.js)Strong knowledge of TypeScript and JavaScriptProven experience designing and building REST APIsSolid understanding of SQL and NoSQL databasesHands-on experience with scalable, high-performance backend architectureExperience working in a product-driven, agile environmentExcellent communication and collaboration skills in EnglishNice to HaveExperience with NestJS frameworkFamiliarity with React or frontend collaborationUnderstanding of blockchain concepts and data modelsExperience working with data analytics or AI-driven systemsResponsibilitiesDesign, build, and maintain backend systems and APIs for large-scale data processingOptimize application performance, scalability, and reliabilityParticipate in the full development lifecycle — from architecture to deploymentCollaborate closely with frontend, product, and infrastructure teamsImprove existing data processing pipelines to enhance speed and efficiencyResearch and integrate AI tools to automate and improve client workflowsEnsure code quality through peer reviews and best engineering practicesMonitor system performance and implement improvements proactivelyGet to know DevsData:We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/