Full Stack Engineer

workfully; Polska; Hybrid; PLN 180.000 - 340.000; Vollzeit

Zusammenfassung

workfully is building an advanced digital twin platform for the energy transition, unifying energy and climate data for actionable insights and decision support. The backend role focuses on TypeScript/Node.js with APIs and microservices, collaborating directly with German-speaking clients and stakeholders.

You will design scalable data models in PostgreSQL, leverage AWS cloud services, and containerize with Docker for Kubernetes deployments.

Qualifikationen

• 5+ years of experience in backend development.
• Strong commercial experience with TypeScript and Node.js.
• Experience designing and developing scalable backend services and microservices.
• Fluent German (C1/C2) – mandatory, with ability to communicate with stakeholders.
• Experience working directly with clients, including requirements gathering and collaboration.
• Experience with AWS services and cloud-based environments.
• Knowledge of PostgreSQL and scalable database design.
• Good understanding of Docker and Kubernetes.
• Experience designing REST and/or gRPC APIs.
• Ability to work independently and drive solutions from concept to delivery.
• Strong communication and problem-solving skills.
• Very good command of English and German.

Aufgaben

• Design, develop, and maintain scalable backend services using TypeScript/Node.js as the primary stack.
• Contribute to microservices built with Golang and Python.
• Collaborate directly with German-speaking clients to understand requirements and propose solutions.
• Build and optimize PostgreSQL data models and queries.
• Develop and maintain APIs using gRPC and REST.
• Containerize applications with Docker and deploy 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.

Kenntnisse

TypeScript

Node.js

Golang

Python

REST APIs

gRPC

AWS

PostgreSQL

Docker

Kubernetes

English

German

Tools

NestJS

Redis

RabbitMQ

Jobbeschreibung

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.

• TypeScript & Node.js (core technologies)
• Python (ETL-related components)
• Redis (Key-Value stores)
• gRPC & REST APIs
• AWS (cloud infrastructure)
• RabbitMQ / AWS SQS (event-driven architecture)
• NestJS

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 and German

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