Senior Backend Lead — Node.js/Golang/AWS | German

Unravel; Polska; Hybrid; PLN 207,000 - 303,000; Full time

Job summary

Unravel is seeking a Lead Backend Engineer (Node.js/Golang/AWS) who will own the backend of an advanced platform. You will design scalable services, lead a team of developers, and collaborate directly with German-speaking clients to translate needs into robust technical solutions.

The role requires strong Node.js experience, cloud expertise (AWS), and fluency in German, with engagement in agile ceremonies and continuous improvement.

Qualifications

• 5+ years of professional backend development at a Senior Software Engineer level
• Strong commercial experience with Node.js
• Fluent German (C1/C2) mandatory with stakeholders
• Very good command of English
• Experience working directly with clients
• Experience designing and developing scalable backend services and microservices
• Experience with AWS services and cloud environments
• Solid knowledge of PostgreSQL and database design for scalable 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
• Strong communication and problem-solving skills

Responsibilities

• Design, develop, and maintain scalable backend services using Node.js as primary stack
• Develop microservices with Golang and Python
• Collaborate with German-speaking clients to gather requirements and propose solutions
• Lead a development team of up to 10 members
• Build and optimize PostgreSQL data models and queries
• Develop and maintain APIs with gRPC and REST
• Containerize apps with Docker and deploy on Kubernetes (AWS)
• Contribute to architecture decisions for distributed systems
• Ensure 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

Skills

Node.js

Python

Redis

gRPC & REST APIs

AWS

RabbitMQ / AWS SQS

NestJS

Tools

Docker

Kubernetes

PostgreSQL

Job description

Unravel is seeking a Lead Backend Engineer (Node.js/Golang/AWS) who will own the backend of an advanced platform. You will design scalable services, lead a team of developers, and collaborate directly with German-speaking clients to translate needs into robust technical solutions.

The role requires strong Node.js experience, cloud expertise (AWS), and fluency in German, with engagement in agile ceremonies and continuous improvement.