Greenhouse ·
full-timeSenior Machine Learning Platform Engineer, Foundation AI
Roblox · San Mateo, CA, United States
Roblox operates a global platform for 3D immersive digital experiences, supporting millions of users and creators. This role involves building and maintaining the machine learning platform that powers critical features such as discovery, safety, economy, and content creation. As a senior engineer, you will treat the platform as a product, designing and shipping durable APIs, SDKs, CLIs, and UIs that simplify the machine learning lifecycle for internal developers. Daily responsibilities include managing core components like model registries, serving layers, and pipeline orchestrators, while setting technical strategies to ensure high-scale reliability and performance. You will partner with data science and infrastructure teams to optimize GPU-intensive training and inference workflows. This position is well-suited for a seasoned engineer with over seven years of experience in system design and backend infrastructure who is passionate about developer experience. A successful candidate will be a hands-on builder capable of translating complex machine learning requirements into clean, automated abstractions that reduce time-to-production for the broader engineering organization.
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. ML Platform powers hundreds of use cases and billions of inferences per day across Discovery, Safety, Economy, and Creation. We build the primitives that let teams train, evaluate, deploy, and operate models quickly and safely—so a new ML idea can reach production in weeks or less. We’re looking for a Principal Platform Engineer who treats platform as a product : someone who can turn complex ML/AI infrastructure into clear, durable APIs, SDKs and easy-to-use CLIs/UIs that our internal developers love. This role blends product thinking, developer experience, backend engineering, and infrastructure at scale. Hands‑on ML experience is a plus; a track record of building internal platforms that developers love is a must. You Are Have 7+ years of professional experience and have a wealth of system design experience upon which to draw to build a scalable, reliable ML platform for all of Roblox. A Code Machine; you love not only to design and communicate ideas but also to actually ship product. You obsess about user feedback, and constantly drive towards getting platform features in customers hands. Proficient in API design and developer experience—gRPC/REST APIs, SDKs, CLIs, and simple UIs that developers love to use. Good to have - experience with the end‑to‑end ML model lifecycle such as model serving, training, model CI/CD, and GPU resources management, and have built ML platform features that are delightful to use. You're passionate about infrastructure‑as‑code and automating painful manual processes. You push for platform solutions that don’t leave on-call teams carrying the burden of design choices. Passionate about supporting ML engineers to meet and understand their needs, and translating them into clean, durable platform abstractions. A clear communicator who excels at both written and verbal communication across differing levels of technical detail. Bachelor's degree in Computer Science, Computer Engineering, Data Science, or a similar technical field. You Will Own platform as a product and set direction end to end: Define requirements, write RFDs, and ship APIs, SDKs, CLIs, and UIs that make ML@Roblox easy to adopt. Bootstrap and maintain core ML Platform components: Serving Layer, Model Registry, Pipeline Orchestrator, and Training/Inference control planes. Set technical strategy and oversee development of high scale and reliable infrastructure systems, with clear SLOs for latency, availability, and cost. Design great developer experiences with paved‑road templates, golden paths, opinionated defaults, and clear docs to reduce time‑to‑first‑production. Instrument the platform to measure adoption, friction, reliability, and cost; use data to prioritize roadmap and validate outcomes. Partner across organizations (ML Engineering, Data Science, Infra/SRE, Security, Finance) to optimize performance, safety, and spend, especially for GPU‑intensive training and high‑QPS inference. Propose and implement new platform tooling to improve time to production for MLEs across the full ML lifecycle. Stay abreast of industry trends in machine learning and infrastructure to ensure the adoption of leading‑edge technologies and practices. Mentor junior and senior engineers, lead design reviews, and drive cross‑team architectural decisions that last. 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 $243,290 — $312,970 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 re
| Role | Senior Machine Learning Platform Engineer, Foundation AI |
|---|---|
| Company | Roblox |
| Location | San Mateo, CA, United States |
| Type | full-time |
| Compensation | Not disclosed |
| Posted | 2026-10-07 |
| Deadline | Rolling |
Typical process for this type of role
A general guide — the exact steps for this specific listing may vary; check the original posting for details.
- 1ApplicationSubmit your resume through the apply link.
- 2ScreeningRecruiter reviews your background against the role.
- 3AssessmentA technical test, assignment, or coding round, depending on the role.
- 4Interview(s)One or more rounds with the hiring team.
- 5OfferOffer letter with compensation and start date.
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