Minecraft Java Engineer

HCL Technologies Limited; Stockholms kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

HCL Technologies Limited seeks a Senior Software Engineer to advance Minecraft Java Edition gameplay systems, world-generation features, and multiplayer capabilities. You will collaborate with designers, artists, and QA to deliver scalable features for millions of players worldwide.

The role emphasizes Java development, performance optimization, and mod-friendly tooling, with responsibilities spanning design, debugging, testing, and CI/CD integration.

Qualifications

• Bachelor's degree in Computer Science or equivalent experience.
• 4+ years of software engineering experience.
• Expertise in object-oriented design and design patterns.
• Strong debugging and performance profiling skills.
• Experience with multithreading and concurrency.
• Knowledge of networking fundamentals.

Responsibilities

• Design and develop gameplay features in Java.
• Implement and enhance world-generation systems.
• Develop multiplayer and server-side functionality.
• Improve game performance, scalability, and stability.
• Build systems supporting mods and community extensibility.
• Debug and resolve customer-reported issues.
• Optimize memory usage and runtime performance.
• Collaborate with designers to translate gameplay concepts into technical solutions.
• Contribute to automated testing and CI/CD pipelines.
• Participate in code reviews and technical design discussions.

Skills

OO design

Design patterns

Debugging

Multithreading

Networking fundamentals

Education

Bachelor's degree in Computer Science

Tools

Java

LWJGL

OpenGL

OpenGL rendering systems

Cloud services & telemetry

Job description

Senior Software Engineer - Minecraft Java Edition

Overview

The Minecraft Java team is responsible for evolving one of the world's most creative and community-driven gaming platforms. We are looking for an experienced Java Engineer to build gameplay systems, world-generation features, multiplayer functionality, tools, and platform services that power Minecraft Java Edition.

You will collaborate with game designers, artists, gameplay engineers, and quality teams to deliver features enjoyed by millions of players worldwide.

Responsibilities

• Design and develop gameplay features in Java
• Implement and enhance world-generation systems
• Develop multiplayer and server-side functionality
• Improve game performance, scalability, and stability
• Build systems supporting mods and community extensibility
• Debug and resolve customer-reported issues
• Optimize memory usage and runtime performance
• Collaborate with designers to translate gameplay concepts into technical solutions
• Contribute to automated testing and CI/CD pipelines
• Participate in code reviews and technical design discussions

Required Qualifications

• Bachelor's degree in Computer Science or equivalent experience
• 4+ years of software engineering experience
• Expertise in object-oriented design and design patterns
• Strong debugging and performance profiling skills
• Experience with multithreading and concurrency
• Knowledge of networking fundamentals

Preferred Qualifications

• Experience with Minecraft modding ecosystems
• Experience with server technologies
• Familiarity with OpenGL, LWJGL, or rendering systems
• Knowledge of game development pipelines
• Experience with cloud services and telemetry systems