Principal/Senior Machine Learning Scientist - Search and Discovery

Required

• You have 7+ (for principal) or 4+ (for senior) years of experience designing and building scalable machine learning solutions. Experienced with transformer based model training, inference, and product integration. Break down product requirements into iterative deliverable stages.
• Depth in recommendation, search retrieval and ranking, or LLM post-training and agentic systems is a plus.
• You have a BS, MS, or PhD in Computer Science or a related discipline or equivalent experience.
• You have initiated and facilitated challenging technical decisions across multiple teams and organizations.
• While deeply technical, you always start with the needs of the user, whether they are Roblox users or internal engineers.
• A creative and strategic approach to solving hard problems. You simplify the complex. You bring in fresh ideas from new places.
• 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
• $278,530—$345,040 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.