Senior Software Engineer (C++)

Job Summary

The Consumer App Foundation team is looking for a Senior Software Engineer to improve Roblox performance across our supported platforms. Our platform is used by over 150M people daily. You will work primarily in cross-platform C++ Roblox game engine code, partnering with teams across the company to identify bottlenecks, ship measurable improvements, and prevent regressions over time.

About the Role

You will own the end-to-end performance of the Roblox client across all platforms directly moving the needle on our key metrics: TTI, app size, battery usage and more. You will build the benchmarking, profiling, and telemetry systems required to catch regressions early and continue scaling our application even further. You will collaborate closely with stakeholders across Engineering, Product, and Design to evaluate technical tradeoffs, align on company-wide priorities, and execute smooth rollout plans. You will drive deep technical impact by diving into complex, unfamiliar codebases, taking ambitious projects from greenfield MVP to production-grade, and mentoring peers on performance best practices.

Responsibilities

• Own the end-to-end performance of the Roblox client across all platforms directly moving the needle on our key metrics: TTI, app size, battery usage and more.
• Build the benchmarking, profiling, and telemetry systems required to catch regressions early and continue scaling our application even further.
• Collaborate closely with stakeholders across Engineering, Product, and Design to evaluate technical tradeoffs, align on company-wide priorities, and execute smooth rollout plans.
• Drive deep technical impact by diving into complex, unfamiliar codebases, taking ambitious projects from greenfield MVP to production-grade, and mentoring peers on performance best practices.

Requirements

• 3+ years of experience writing high-quality, performant C++ code in large, complex codebases
• A proven track record of building reliable measurement, monitoring, or regression prevention systems.
• The ability to autonomously navigate complex, ambiguous systems and deliver stable, production-grade software.
• Exceptional communication skills to discuss technical trade-offs with both engineering peers and cross-functional partners.

Bonus

• Hands-on experience with on-device profiling (iOS and/or Android) to find and measure optimization opportunities.

Qualifications

• Experience with cross-platform development in C++ using the Roblox game engine.
• Strong understanding of performance optimization techniques and tools.
• Experience with profiling and benchmarking tools.
• Ability to work effectively in a fast-paced, agile environment.

Skills

• Proficiency in C++
• Experience with profiling and benchmarking tools
• Understanding of performance optimization techniques
• Experience with cross-platform development

Benefits

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.

Pay

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.

Schedule

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).