Senior Software Engineer, ML Infra

• Design, build, and own critical components of the AI based text safety components, with a focus on usability, reliability, scalability, and performance. - Implement robust AI service to ensure text quality on all Roblox properties (Avatar, Game Description etc.). - Advance our AI systems infrastructure by developing strong frameworks and APIs to support the text filtering needs for hundreds of clients in Roblox. - Partner with cross-functional teams of engineers, product managers, policy experts, and safety specialists to to deliver scalable data and AI solutions to power next-generation safety systems. - Develop text safety quality metrics and eval tooling to support the continued quality iteration over time. - Stay current with emerging technologies and push forward innovation in AI space to enhance user and platform safety. You Have:

• 5+ years of experience designing, building, and deploying large-scale machine learning systems in production environments. - A graduate degree or equivalent experience in Computer Science, Engineering, or a related technical field. - Strong communication skills and a collaborative, solution-oriented approach to problem solving. - Hands-on experience with fine-tuning VLMs, LLMs, or large multimodal models to improve model quality, safety, and performance is a plus. You Are:

• Data & System Oriented: You understand that robust data and systems are the foundation of any production applications, and you design infrastructure for scale, correctness, and reliability. - Collaborative: You thrive in cross-functional teams, partnering effectively with Product and Engineering to solve complex challenges. - Curious & Creative: You enjoy tackling hard problems, exploring new technologies, and driving continuous improvements in both systems and workflows. - Impact Driven: You focus on outcomes - prioritizing product impact, reliability, and measurable success over code volume or complexity. 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

$196,750—$243,290 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.