Java/Kotlin Internal Tools Developer (AI/Rendering)

TL;DR

Java/Kotlin Internal Tools Developer (AI/Rendering): Developing backend tools and pipelines for AI, rendering, and 3D data conversion with an accent on Kotlin/JVM and Python-based Blender automation. Focus on building high-performance 3D content processing pipelines, geometry transformations, and scene preparation workflows.

Location: Hybrid (Warsaw, Amsterdam, or Barcelona)

Company

hirify.global is a global hub for home design that simplifies the renovation process for over 100 million users worldwide.

What you will do

• Develop and maintain Kotlin/JVM-based backend tools, console applications, and automation pipelines.
• Build and support Python-based Blender rendering pipelines for scene processing and production workflows.
• Create platform components for 3D model conversion, catalog preparation, and internal production workflows.
• Implement math-heavy tooling for geometry, wall generation, and 3D content processing.
• Research and evaluate emerging technologies related to 3D media formats and production automation.
• Write high-performance, maintainable code following SOLID principles and clean architecture.

Requirements

• Strong professional experience with Java and/or Kotlin on the JVM.
• Practical experience with Python and willingness to work deeply with Blender rendering pipelines.
• Deep understanding of the JVM ecosystem, including Gradle, profiling, and performance optimization.
• Solid SQL knowledge (SQLite, MySQL, PostgreSQL).
• Proficiency with Linux and its ecosystem.
• English: Fluent (C1) required.

Nice to have

• Experience with C/C++.
• Knowledge of Spring, Dagger, or JUnit.
• Understanding of 3D technologies (OpenGL, WebGL, Raytracing, Blender).
• Background in Mathematics, Geometry, or Computer Vision.
• Experience with Kubernetes and Docker.

Culture & Benefits

• Work environment that balances freedom and responsibility.
• Over 30 days of paid holidays per year.
• Company computer equipment provided upon request.
• Financial support and allocated funds for education and training courses.
• Access to English classes via the corporate platform.
• Offline company events in Lithuania and regular online team-building.