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.
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
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