[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Roblox jobs](https://jobs.opennash.com/companies/roblox/) · [Search jobs](/search/) Roblox · San Mateo, CA # Senior Software Engineer, Client Systems (C++) San Mateo, CA Senior individual contributor $195,780 — $242,100 Software Engineering Listed on Roblox’s official careers site. Posted July 7, 2026. Check that it is still open and apply there. [Apply on Roblox’s careers site →](https://careers.roblox.com/jobs/8036535?gh_jid=8036535) [OpenNash Jobs](https://jobs.opennash.com/) / [Roblox](https://jobs.opennash.com/companies/roblox/) / Senior Software Engineer, Client Systems (C++) ## 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 Luau App Foundations team is responsible for the core infrastructure of the Roblox application. They bridge the gap between app and the performance-heavy Roblox game engine. This team is building the unified stack that powers mission-critical surfaces like Home, Avatar, and Social for millions of concurrent users. They are the ones who make it possible for "Web-style" development efficiency to exist within a high-performance C++ game engine. ### Why is this role exciting Technical Pioneer: You will be writing libraries and modules using C++ inside a world class Roblox proprietary Game Engine. ### Systematic Impact This is a "Force Multiplier" role. The frameworks and components you build will be used by dozens of other engineering teams to ship their features. ### Complex Problem Solving You aren’t just building an app; you’re managing smooth data flow through a client that has to perform perfectly on a $100 Android phone and a $3,000 Gaming PC simultaneously. 0 to 1 Transitions: You will lead the charge in shaping some of the most crucial components of the App written in C++ inside the Game Engine. ### Key Challenges Bridging Tech Stacks: The libraries you write sit between a modern UI (written in Luau) and Core Game engine layer as well as Platform layer (Android, iOS abstractions) ### Large-Scale Performance Diagnosing memory usage and framerate issues that only appear when you have millions of daily active users. ### Standardizing Chaos Creating a "joyful development experience" for other engineers by enforcing clean, modular, and testable code standards across a massive organization. ### Platform Universality Ensuring that a single foundation works across iOS, Android, Windows, Mac, and Consoles without compromise. You will: Be the primary C++ expert in the team and drive frontend C++ strategy for extending our interface layer. Work with stakeholders across Engineering, Product, and Design to expand frontend ecosystems and drive technical enhancements in engineering space. Implement innovative solutions to feature requests and collaborate with the Roblox Surface owners on new initiatives. Have fun working with our internal team members and community developers to improve the overall state of Lua App on Roblox You have: 4+ years of experience with significant knowledge of system or mobile programming. ### Proficiency in C++ Strong C++ programming skills with an ability to write high quality, performant code; experience with Lua is a plus Passion about building frameworks and libraries: You are driven to build a strong platform with world class design patterns and cutting edge system architecture. ### Performance focus You embrace software performance considerations, with an ability to implement performant solutions for platforms including mobile. ### Personally Motivated Self-sufficient, self-organized and able to take ownership of a project throughout its full lifecycle A Team player mentality: Ability to work closely with and inspire the rest of your team while displaying excellent interpersonal and communication skills 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 $195,780 — $242,100 USD Roles 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. ## At a glance - Posted by the employer: Jul 7, 2026 - First seen by OpenNash: Jul 10, 2026 - Last checked: Oct 18, 2026 - Listed for: 103 days - Location: San Mateo, CA - Pay: $195,780 — $242,100[Apply on Roblox’s careers site →](https://careers.roblox.com/jobs/8036535?gh_jid=8036535) ## More jobs at Roblox ### [Director, Product Management, Consumer Frontend](https://jobs.opennash.com/companies/roblox/jobs/618dea38caeed8a50e32/) San Mateo, CA ### [Principal Frontend Software Engineer - Discovery](https://jobs.opennash.com/companies/roblox/jobs/398950a33788754f79e1/) San Mateo, CA ### [Principal Fullstack/Backend Software Engineer, User Connections](https://jobs.opennash.com/companies/roblox/jobs/ffe1dce0d85429fc740d/) San Mateo, CA ### [Principal Security Software Engineer, Application Security](https://jobs.opennash.com/companies/roblox/jobs/788ab089afa64d9b6c2e/) San Mateo, CA ### [Principal Security Software Engineer, IAM](https://jobs.opennash.com/companies/roblox/jobs/aca788f4dd092e078ecf/) San Mateo, CA ## Similar jobs at other companies ### [Software Engineer II - Operating Systems (OS) Software/Hardware Optimization](https://jobs.opennash.com/companies/microsoft/jobs/9dfe31e5f9775dd7b962/) Microsoft · United States, Washington, Redmond ### [Senior Software Engineer, Networking Software Systems](https://jobs.opennash.com/companies/qualcomm/jobs/6fb248c49007f479715f/) Qualcomm · Santa Clara, California, United States of America ### [Software Systems Testing Engineer](https://jobs.opennash.com/companies/lockheed-martin/jobs/4e689ee82764dc9d7235/) Lockheed Martin · Littleton, CO ### [Software Systems Engineer](https://jobs.opennash.com/companies/general-dynamics/jobs/2a70e5d819f23f12a628/) General Dynamics · Manassas, VA, US ### [Software Engineer (Systems) 3](https://jobs.opennash.com/companies/sanmina-sci/jobs/cbfbda784474da816978/) Sanmina-SCI · Penang, MY [Software Engineering jobs](/functions/software-engineering/) OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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