Senior Software Engineer, Ads Experience (C++)

Roblox; San Mateo (CA); On-site; USD 238,000 - 290,000; Full time

Job summary

A leading company, Roblox, is seeking a Senior Software Engineer to develop a groundbreaking ads system within their Game Engine. This high-impact position focuses on creating innovative ad formats and contributes to shaping a multi-billion dollar business. Candidates should possess deep expertise in C++, analytical skills, and a passion for data, along with the ability to work collaboratively across teams.

Benefits

Equity compensation

Comprehensive benefits package

Qualifications

• 6+ years working with complex C++ codebases.
• Strong background with app metrics and analytics.
• Proven ability to maintain robust, production-quality systems.

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.

Skills

C++

Analytical skills

Data systems

Problem solving

Curiosity

Job description

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

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 Senior Software Engineer with an expertise in C++. This is a high-impact position. Ads at Roblox is at the beginning of our journey, presenting an amazing opportunity to get in at the ground floor and help build a multi-billion dollar business from scratch. We are approaching this challenge with a strong focus on performance and a deep respect for our community — ensuring everyone continues to have an exceptional experience on Roblox. As we move toward enabling cooperative experiences for an infinite number of players in infinitely scalable worlds, we are looking for a Senior Engineer who is both technically exceptional and capable of delivering meaningful, real-world impact.

You Will:

• 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

You Have:

• 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

For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits.

Annual Salary Range $238,520 — $289,460 USD

Roles that are based in our San Mateo, CA Headquarters are in-office Tuesday, Wednesday, and Thursday, with optional in-office on Monday and Friday (unless otherwise noted).

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations for all candidates during the interview process.