Spyrosoft
Lead Backend Engineer (Golang/Node JS / AWS) with German
OnsiteSeniorWrocław, PolandCleanTechPlatformInfrastructure
Our Take
Build a digital twin platform for energy transition using Node.js, Golang, and AWS.
What you’ll do
- Design, develop, maintain scalable microservices
- Build and optimize PostgreSQL data models
- Develop and maintain gRPC and REST APIs
- Containerize applications with Docker/Kubernetes
- Contribute to architecture decisions
- Ensure system scalability and reliability
- Collaborate with frontend/backend teams
What they’re looking for
- 5+ years backend development experience
- Strong Node.js and Golang expertise
- PostgreSQL and database design
- Docker and Kubernetes knowledge
- Hands-on AWS services experience
- gRPC and REST API design
- Event-driven architecture familiarity
Skills & Focus Areas
- Node.js
- Golang
- PostgreSQL
- Docker
- Kubernetes
- AWS
- gRPC
- REST APIs
As posted by Spyrosoft
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