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

Tech stack:

• 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)

Requirements:

• 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)

Nice to have:

• 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

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 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