Principal/Senior Machine Learning Scientist - Search and Discovery

You Will:

• Design and implement the machine learning solutions that power agentic search and discovery systems to drive Roblox content distribution.
• Design and implement large scale recommendation models.
• Design and implement LLMs and VLMs for visual understanding and natural language understanding.
• Balance researching new technologies with a practical approach to integrate research efforts into the Roblox products.
• Collaborate with other teams within Roblox to make sure we are building products with a community first approach.
• Communicate with the industry and communities where applicable and be ambassador for Roblox.

You Have:

• 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.
• 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.

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.

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.