{"id":2112445,"url":"https://alion.io/job/unravel-lead-fullstack-engineer-typescriptnode-js-with-german","title":"Lead Fullstack Engineer (Typescript/Node.js) with German","company":{"id":2860104,"name":"Unravel","domain":"unravel.com","url":"https://alion.io/company/unravel-com","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Wrocław, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150,"max":210,"currency":"PLN","period":"hour","gross":null,"usd_annual":108000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Digital Twin","optional":false},{"name":"Docker","optional":false},{"name":"ETL/ELT","optional":false},{"name":"gRPC","optional":false},{"name":"Nest.JS","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Rest API","optional":false},{"name":"Svelte","optional":false},{"name":"TypeScript","optional":false},{"name":"Agile","optional":true},{"name":"Angular","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true}],"status":"live","first_seen_at":"2026-09-25T12:05:05Z","employer_posted_date":null,"last_verified_at":"2026-09-25T12:05:05Z","board_verified":false,"closed_at":null,"days_open":22,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":22},"description":"You will join the development of an advanced digital twin platform for the energy transition, designed to unify energy and climate-related data into a single, comprehensive solution.\nThe platform supports stakeholders involved in energy transformation by providing data-driven insights and decision-making tools. It addresses key challenges such as CO₂ balancing, renewable energy expansion, power grid planning, and municipal heating strategies.\nBuilt on a modular and scalable architecture, the solution enables complex analytics and supports real-time insights in a rapidly evolving energy sector.\nTech stackTypeScript & Node.js (core technologies)\nGolang (microservices, gRPC-based services)\nPython (ETL-related components)\nPostgreSQL\nRedis (Key-Value stores)\ngRPC & REST APIs\nDocker & Kubernetes\nAWS (cloud infrastructure)\nRabbitMQ / AWS SQS (event-driven architecture)\nNestJS\nAngular / Svelte (collaboration exposure)\nRequirements5+ years of experience in backend development\nStrong commercial experience with TypeScript and Node.js (key requirement)\nExperience designing and developing scalable backend services and microservices\nFluent German (C1/C2) – mandatory, with the ability to communicate confidently with business stakeholders and clients\nExperience working directly with clients, including requirements gathering, solution discussions, and ongoing collaboration\nExperience with AWS services and cloud-based environments\nSolid knowledge of PostgreSQL and database design for scalable, high-performance systems\nGood understanding of Docker and Kubernetes\nExperience designing and developing REST and/or gRPC APIs\nAbility to work independently, take ownership, and drive solutions from concept to delivery\nStrong communication and problem-solving skills\nVery good command of English\nNice to haveExperience with Golang\nExperience with Python (especially in ETL processes)\nFamiliarity with NestJS framework\nKnowledge of event-driven architectures (RabbitMQ, AWS SQS)\nExposure to Angular or Svelte frontend technologies\nKnowledge of the energy or electric energy industry domain\nExperience working within highly agile environments\nExperience using AI tools in day-to-day work\nZakres obowiązków\nDesign, develop, and maintain scalable backend services using TypeScript/Node.js as the primary technology stack\nContribute to the development of microservices built with Golang and Python\nCollaborate directly with German-speaking clients and stakeholders to understand requirements and propose technical solutions\nBuild and optimize PostgreSQL data models and queries\nDevelop and maintain APIs using gRPC and REST\nContainerize applications with Docker and manage deployments on Kubernetes (AWS)\nContribute to architecture decisions for distributed systems\nEnsure system scalability, performance, and reliability\nCollaborate with frontend (Angular) and backend (NestJS) teams\nWork independently from concept to production delivery\nParticipate in agile ceremonies, code reviews, and continuous improvement initiatives\nTech stack\nNode.js\nTypeScript\nAWS\nPostgreSQL 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