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IntelliJ IDEA Java Subsystems Test Coverage

Description

We are the Java QA Team, responsible for ensuring the quality of Java support in IntelliJ IDEA. Our work covers various subsystems, from Java inspections to integrations with testing frameworks such as JUnit and Cucumber.
The Java Team develops new ways of working with Java code and provides support for new versions of the Java programming language. As an intern, you will learn how to test language support in an IDE, stay up to date with developments in the Java ecosystem, write test documentation, and create UI automated tests.
Your final project will be to provide test coverage for one of the Java subsystems and work on various tasks related to supporting Java features in IntelliJ IDEA.

Requirements

Responsibilities

  • Perform manual testing

  • Research documentation for external tools

  • Report bugs with clear steps, screenshots, and prioritize it

  • Create test cases and checklists

  • Collaborate with developers and senior QA engineers to reproduce, investigate, and track issues

  • Participate in exploratory testing sessions to identify usability and edge-case problems

  • Research and create new UI-automated tests

Requirements

  • Basic knowledge of the Java programming language

  • Basic understanding of software testing concepts (manual QA, bug reporting, exploratory testing)

  • Understanding of ways to work with code in an IDE (inspections, intentions, refactorings, etc.)

  • Attention to detail and a structured approach to testing

  • Curiosity and a genuine interest in exploring how things work

  • Proactivity and initiative

Admission

Internship Projects Fall 2026

Contact details

internship@jetbrains.com

Preferred internship location

Armenia
Cyprus
Czechia
Germany
Netherlands
Poland
Serbia

Technologies

Java
JVM
Kotlin

Area

QA

Internship timing preferences

Flexible start
Part-time acceptable
Applications by 08.05.2026
Interview by 30.05.2026
Feedback and final results by 12.06.2026