Senior Back-End Developer, Engineering (Typescript / Nest.js)
Company:Echo Base
Location:Spain, Lithuania, Latvia, Philippines, Americas, Europe, UTC-5, UTC+3
Languages:English
Seniority level:Senior, 10+ years
Experience:10+ years
Skills:
Backend DevelopmentLeadershipNode.jsSoftware DevelopmentSQLBlockchainCloud ComputingGitSoftware ArchitectureTypeScriptREST APINest.jsNosqlCI/CDAgile methodologiesDevOpsMicroservicesProblem SolvingCritical thinking
Requirements:
Over 10 years demonstrating mastery of Javascript, Typescript, Nest.js or Node.js, mainly in production applications Comprehensive grasp of Crypto and Crypto Trading Excellent analytical, critical thinking, and problem-solving skills in financial technology contexts Outstanding testing practices, TDD, unit, integration, e2e testing, (JUnit or similar frameworks) Ability to manage, coordinate, and prioritize work with multiple team members Strong communication skills and an ability to collaborate cross-functionally Able to explain technical concepts to both technical and non-technical stakeholders Must be located in the Americas or Europe (between time zones UTC-5 and UTC+3) Solid experience in administration, modeling, optimization techniques in SQL and NoSQL databases Understanding of Git and branching models
Responsibilities:
Take end-to-end ownership of features (backend, API, deployment) Design and build new modules (connectors, API routes, wallet / transaction modules, alerts engine) Improve, maintain, and scale existing services Implement, enforce, and monitor APIs to external crypto services (REST, WebSocket, FIX where applicable) Work on state synchronization, caching, rate limits, backpressure, and resilient connectivity Ensure system security and correctness (authentication, authorization, encryption, safe handling of keys / wallets) Participate in architectural decisions and roadmap planning Occasionally interface with DevOps / infrastructure to deploy, monitor, and maintain production services
