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Unravel Linkedin · Posted 2mo ago

Lead Fullstack Engineer (Typescript/Node.js) with German

Poland

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Indexed description

Tech stack

  • TypeScript & Node.js (core technologies)
  • Golang (microservices, gRPC-based services)
  • Python (ETL-related components)
  • PostgreSQL
  • Redis (Key-Value stores)
  • gRPC & REST APIs
  • Docker & Kubernetes
  • AWS (cloud infrastructure)
  • RabbitMQ / AWS SQS (event-driven architecture)
  • NestJS
  • Angular / Svelte (collaboration exposure)

Requirements

  • 5+ years of experience in backend development
  • Strong commercial experience with TypeScript and Node.js (key requirement)
  • Experience designing and developing scalable backend services and microservices
  • Fluent German (C1/C2) – mandatory, with the ability to communicate confidently with business stakeholders and clients
  • Experience working directly with clients, including requirements gathering, solution discussions, and ongoing collaboration
  • Experience with AWS services and cloud-based environments
  • Solid knowledge of PostgreSQL and database design for scalable, high-performance systems
  • Good understanding of Docker and Kubernetes
  • Experience designing and developing REST and/or gRPC APIs
  • Ability to work independently, take ownership, and drive solutions from concept to delivery
  • Strong communication and problem-solving skills
  • Very good command of English

Nice to have

  • Experience with Golang
  • Experience with Python (especially in ETL processes)
  • Familiarity with NestJS framework
  • Knowledge of event-driven architectures (RabbitMQ, AWS SQS)
  • Exposure to Angular or Svelte frontend technologies
  • Knowledge of the energy or electric energy industry domain
  • Experience working within highly agile environments
  • Experience using AI tools in day-to-day work

Project 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.

The 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.

Built on a modular and scalable architecture, the solution enables complex analytics and supports real-time insights in a rapidly evolving energy sector.

Main Responsibilities

  • Design, develop, and maintain scalable backend services using TypeScript/Node.js as the primary technology stack
  • Contribute to the development of microservices built with Golang and Python
  • Collaborate directly with German-speaking clients and stakeholders to understand requirements and propose technical solutions
  • Build and optimize PostgreSQL data models and queries
  • Develop and maintain APIs using gRPC and REST
  • Containerize applications with Docker and manage deployments on Kubernetes (AWS)
  • Contribute to architecture decisions for distributed systems
  • Ensure system scalability, performance, and reliability
  • Collaborate with frontend (Angular) and backend (NestJS) teams
  • Work independently from concept to production delivery
  • Participate in agile ceremonies, code reviews, and continuous improvement initiatives
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