Principal Software Engineer, Ads UX — C++ & Scale

Roblox; San Mateo (CA); On-site; USD 295,000 - 345,000; Full time

Benefits offered by this job

Equity compensation

Benefits package

Job summary

Roblox is seeking a Principal/Senior Software Engineer for the Ads User Experience group in San Mateo, CA. You will help build a first-of-its-kind ads system inside the Roblox Game Engine, focusing on video formats and scalable design.

You have 6+ years of deep C++ experience, a passion for reliable data, and a drive to ship production-grade systems. This role offers equity and full benefits as part of a full-time, onsite team.

Qualifications

• 6+ years in deep C++ codebases with complex systems.
• Strong ability to interpret app metrics and insights.
• Deep understanding of reliable data systems and analytics.
• Proven track record building robust, production-grade software.
• Eager to learn and adopt emerging technologies.

Responsibilities

• Help build a first-of-its-kind ads system within the Roblox Game Engine.
• Develop new ad formats and integrations, starting with video.
• Design and optimize scalable systems across Roblox experiences.
• Play a foundational role in shaping a multi-billion dollar Ads business.
• Focus on user experience, performance, and platform integrity.
• Collaborate with cross-functional teams to deliver thoughtful ad solutions.

Skills

C++ expertise

Analytics mindset

Data reliability

Production quality

Curiosity

Job description

Roblox is seeking a Principal/Senior Software Engineer for the Ads User Experience group in San Mateo, CA. You will help build a first-of-its-kind ads system inside the Roblox Game Engine, focusing on video formats and scalable design.

You have 6+ years of deep C++ experience, a passion for reliable data, and a drive to ship production-grade systems. This role offers equity and full benefits as part of a full-time, onsite team.