Principal Software Engineer, Ads UX — In-Engine Ad System

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

Benefits offered by this job

Equity compensation

Job summary

Roblox is hiring a Principal Software Engineer to lead the development of a first‑of‑its‑kind ads system inside the Roblox Game Engine. You will help design new ad formats, start with video integrations, and scale systems to support experiences across the platform.

With 6+ years in deep C++ work, you will ensure production‑quality, data‑driven decisions and partner with cross‑functional teams to deliver a high‑performance, community‑respecting ads experience for billions of players.

Qualifications

• 6+ years in deep C++ codebases working on complex technical problems.
• Strong background with app metrics, analytics, or data science.
• High standards for accurate and reliable data systems.
• Proven ability to build and maintain robust production‑quality systems.
• Eagerness to learn and stay at the forefront of 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.
• Contribute to design and performance of scalable systems across Roblox experiences.
• Play a foundational role in shaping a multi‑billion dollar Ads business.
• Prioritize user experience, performance, and platform integrity; collaborate with cross‑functional teams.

Skills

C++ expertise

6+ years experience

Analytics

Data systems

Production systems

Curiosity

Job description

Roblox is hiring a Principal Software Engineer to lead the development of a first‑of‑its‑kind ads system inside the Roblox Game Engine. You will help design new ad formats, start with video integrations, and scale systems to support experiences across the platform.

With 6+ years in deep C++ work, you will ensure production‑quality, data‑driven decisions and partner with cross‑functional teams to deliver a high‑performance, community‑respecting ads experience for billions of players.