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Senior Software Engineer - Avatar Personization

Speechly

Speechly

Software Engineering
San Mateo, CA, USA
USD 242,100-293,800 / year + Equity
Posted on Jan 22, 2026
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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.

As a Senior Software Engineer on the Avatar Personalization team, you will use the Roblox game engine to build features that push the boundaries of our avatar technology, and build creative systems that make Roblox avatars simple and delightful to use. You will tackle the biggest projects, provide technical leadership, and coordinate with teams across Roblox to build systems used by tens of millions of monthly players and developers.

You are passionate about building outstanding systems and APIs in the Roblox game engine, enhancing avatar features, and enriching customization systems for Roblox players and developers. You'll work with Avatar technologies such as animation, clothing, hair, and shading. Experience in game or film development is especially translatable into this team and role.

You Will:

  • Implement groundbreaking features in Roblox game engine to build the best avatar system in the world
  • Build APIs for Roblox developers enabling in-experience creation of Roblox Avatars from scratchEnhance avatar fidelity and uniqueness on Roblox
  • Use the Roblox game engine to build excellent vertical applications for multiple platforms (mobile, tablet, PC, and console)
  • Refactor and improve our existing codebaseImprove system reliability, performance, and test coverage
  • Work with numerous teams to help build the world's best user generated gaming platform
  • Implement systems in a combination of C++ and Lua

You Have:

  • 5+ years of professional experience working on a consumer-facing game engine and/or game application
  • Proficiency with C++, 3D math, data structures, algorithms, and networking
  • Experience working on character building and customization systems, editors, and content creation tools
  • Experience building online console or mobile game titles
  • Experience with game or film character systems such as animation, rigid-body or cloth/hair physics, or shading

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
$242,100$293,800 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.