Senior TS/Node Backend Engineer – Energy Digital Twin

workfully; Polska; Hybrid; PLN 180,000 - 340,000; Full time

Job summary

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.

Qualifications

• 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.

Responsibilities

• 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.

Skills

TypeScript

Node.js

Golang

Python

REST APIs

gRPC

AWS

PostgreSQL

Docker

Kubernetes

English

German

Tools

NestJS

Redis

RabbitMQ

Job description

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.