Lead Backend Engineer (Golang/Node JS / AWS) with German

• Node.js (primary backend technology)
• 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)

• 5+ years of experience in backend development, ideally within microservices architecture
• Strong expertise in Node.js and Golang
• Experience with PostgreSQL and database design for scalable, high-performance systems
• Solid knowledge of Docker and Kubernetes
• Hands-on experience with AWS services and infrastructure
• Experience with gRPC and REST API design
• Familiarity with event-driven architectures (RabbitMQ, AWS SQS)
• Understanding of distributed systems and scalability principles
• Ability to work independently and take ownership of complex tasks
• Strong problem-solving mindset and proactive attitude
• Very good command of English and German (both written and spoken)

• Experience with Python (especially in ETL processes)
• Familiarity with NestJS framework
• Exposure to Angular or Svelte frontend technologies
• Knowledge of the energy or electric energy industry domain
• Experience working within highly agile environments
• Experienced in using AI tools in day-to-day workflow

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 microservices using Node.js, Golang, and Python
• 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