Principal Software Engineer, App Performance
Required skills
- C++
- client application codebases
- performance profiling
- triaging issues
- mobile platforms
- desktop platforms
- platform API
- systems thinking
- measurement
- monitoring
Nice to have
- Lua
- scripting languages
- comfort with ambiguity
Role summary
The Consumer App Performance team is seeking a Principal Software Engineer to lead stability and performance initiatives across their C++ game engine and front-end codebase. This role involves cross-team collaboration to identify and resolve performance bottlenecks, prevent regressions, and enhance the end-to-end performance of Roblox across all devices. Responsibilities include researching opportunities, building roadmaps, designing solutions for stability issues, implementing real-time monitoring, and aligning with stakeholders on priorities and rollout plans. The ideal candidate has 10+ years of experience with complex client applications, C++ proficiency, and a deep understanding of client platform performance.
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 Consumer App Performance team is looking for a Principal Software Engineer to spearhead stability and performance improvements. You will work across system-level, cross-platform C++ game engine, and front-end codebase, partnering with teams across the company to identify bad behavior patterns and performance bottlenecks, ship measurable improvements, and prevent regressions over time.
Our team owns the end-to-end performance of Roblox, from speed and responsiveness to efficiency and stability, across all devices and platforms we support: mobile, desktop, and console.
You will:
You have:
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 as described on this page.
Annual Salary Range$295,250—$345,040 USDRoles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence 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 to candidates with qualifying disabilities or religious beliefs during the recruiting process.
For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.
Sample Roblox interview questions
- 1
Design a Delayed Payment Scheduler Service
system designmedium - 2
Design a skill-based matchmaking system
system designhard - 3
Design a system for managing data versioning in a distributed environment.
system designmedium - 4
Design a system for real-time processing of user behavior data.
system designmedium - 5
Design a Resource Loader in a Game Engine
system designmedium
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