Software Developer Java/Node.js

November 9, 2026

Senior

Warsaw, Poland

Description

JetBrains develops professional tools for developers, and its websites and web services support product distribution, learning, and user feedback. The role focuses on building internal web applications and services, from architecture and implementation through deployment and long-term support.

Responsibilities

Design and develop internal web applications and services for the entire company
Participate in solution architecture, approach selection, service decomposition, and defining interactions
Build and maintain services in AWS and Kubernetes environments
Develop tools and platforms for localization processes and integrate them with third-party systems
Improve system reliability, scalability, and observability
Work with other teams to evolve shared infrastructure and internal platforms

Requirements

3–5 years of backend web application development experience in Kotlin or Java
Experience developing with Node.js
Knowledge of modern backend frameworks such as Ktor and Spring
Experience designing and building production systems
Understanding of distributed systems fundamentals, including networking, fault tolerance, and scalability
Experience working with cloud environments such as AWS
Familiarity with containerization and orchestration
Ability to write clean, maintainable, and well-structured code
Willingness to take ownership of production systems, maintain them, and continuously improve them
Strong communication skills and ability to collaborate with colleagues
Experience with infrastructure as code such as Terraform
Experience with CI/CD pipelines and deployment automation
Experience with observability tools, including metrics, logs, and traces
Hands-on experience applying AI tools or agents in development