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
- Department
- Software Delivery
- Role
- Software Engineer
- Locations
- Poland (PL)
- Hourly salary
- PLN150 - PLN190
About Spyrosoft
Spyrosoft is an authentic, cutting-edge software engineering company, established in 2016. In 2021 and 2022, we were among the fastest growing technology companies in Europe, according to the Financial Times. We were founded by a group of tech experts with established backgrounds in software engineering, who created an ‘engineer-to-engineer’ workplace, powered by enthusiasm, fairness and authentic relationships. Having a unique offering, which bridge the gap between technology and business, we specialise in technology solutions for industry 4.0, automotive, geospatial, healthcare & life sciences, employee experience & education and financial services industries.