Principal Software Engineer, Ads User Experience

About the Role

The Ads User Experience team at Roblox is dedicated to developing cutting-edge software and integrations that facilitate ads on Roblox. Our focus lies in building a first-of-its-kind ads system in our Game Engine. We are developing different ad formats and integrations, starting with video.

We are looking for a Principal Software Engineer with an expertise in C++ to help build a multi-billion dollar business from scratch with a strong focus on performance and community respect.

Responsibilities

• Help build a first-of-its-kind ads system within the Roblox Game Engine
• Develop new ad formats and integrations, starting with video
• Contribute to the design and performance of systems that scale across all Roblox experiences
• Play a foundational role in shaping a multi-billion dollar Ads business
• Build with an emphasis on user experience, performance, and platform integrity
• Work closely with cross-functional teams to deliver thoughtful, community-respecting ad solutions

Qualifications

• Experience: 6+ years working in deep, complex C++ codebases on challenging technical problems
• Analytical skills: Strong background with app metrics, analytics, or data science — with the ability to interpret and act on insights
• Passion for data: High standards for accuracy and a deep understanding of reliable data systems
• Responsibility: Proven ability to build and maintain robust, production-quality systems
• Curiosity: Eagerness to learn and stay at the forefront of emerging technologies

Work Arrangement

Roles based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday.