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Software Engineering Intern in PhpStorm

Description

We are the team behind PhpStorm, an IDE for PHP developers built on the IntelliJ Platform.

We are looking for a Software Engineering Intern who is curious about how professional developer tools are built from the inside out. In this role, you will be a full-fledged member of the PhpStorm team. You’ll participate in our workflows, engage in technical brainstorms, and contribute to a codebase that defines the industry standard for PHP development.

Note on Projects: We believe in matching work to both our roadmap and your personal strengths. Therefore, a specific project will be finalized closer to your start date, ensuring you work on something high-priority and high-impact.

What You Will Do

Your tasks will involve core IDE functionality and internal mechanics. Potential areas of work include:

  • IDE Intelligence: Developing and improving features like code completion, refactorings, and navigation.

  • Static Analysis: Improving type inference and logic for detecting errors in PHP code.

  • Optimization: Working on performance and memory usage to keep the IDE responsive.

  • New Tech: Exploring AI-assisted features or supporting new language versions.

  • Maintenance: Debugging complex issues and improving existing tools.

Requirements

Must-Have

  • Curiosity

  • Kotlin and/or Java knowledge

  • Knowledge of algorithms and basic computer science principles

  • Good communication skills in English

Nice-to-Have

  • PHP knowledge

Admission

Internship Projects Summer/Fall 2026

Contact details

internship@jetbrains.com

Preferred internship location

Armenia
Cyprus
Czechia
Germany
Netherlands
Poland
Serbia
Spain
UK

Technologies

Java
Kotlin
PHP

Area

Development

Internship timing preferences

Full-time preferable

Additional information

Good fit for beginners
Applications by 16.03.2026
Interview by 17.04.2026
Feedback and final results by 22.04.2026