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Roblox

Roblox

User-generated multiplayer platform for immersive experiences

Machine Learning Scientist - Search and Discovery

Full-Time
$278.5k - $345k/yr

+ Equity compensation

Mid, Senior
Bachelor's, Master's, PhD
San Mateo, CA, USA
Hybrid

Three days on-site per week required.

No H1B Sponsorship

About the job

Requirements
  • Seven or more years of experience for the principal level or four or more years for the senior level designing and building scalable machine learning solutions.
  • Experience with transformer-based model training, inference, and product integration.
  • Ability to break product requirements into iterative deliverable stages.
  • A bachelor's, master's, or doctoral degree in Computer Science or a related discipline, or equivalent experience.
  • Ability to initiate and facilitate challenging technical decisions across multiple teams and organizations.
  • Ability to focus on the needs of Roblox users or internal engineers when solving technical problems.
Responsibilities
  • Design and implement machine learning solutions that power agentic search and discovery systems and drive Roblox content distribution.
  • Design and implement large-scale recommendation models.
  • Innovate on large language models, vision-language models, autoregressive models, or other large models for query understanding, user understanding, content understanding, recommendation, and agentic search.
  • Design evaluation and post-training loops, including supervised fine-tuning, preference optimization, and reinforcement learning, for ranking, query understanding, and agentic systems.
  • Balance research into new technologies with practical integration of research efforts into Roblox products.
  • Collaborate with other Roblox teams to build products using a community-first approach.
  • Communicate with the industry and relevant communities and serve as an ambassador for Roblox.
Desired Qualifications
  • Depth in recommendation, search retrieval and ranking, or large language model post-training and agentic systems.
  • A creative and strategic approach to solving complex problems and simplifying complexity.

About the company

Roblox provides a global virtual platform where people, especially under 18, can learn, work, play, and socialize by joining games and experiences created by a large community of developers. Using Roblox Studio, creators build immersive multiplayer experiences that run on the platform for others to explore and enjoy. The platform supports cross‑device access and social features, allowing players to interact, team up, and share content. Revenue comes from in‑platform purchases (such as virtual currency and items) and subscriptions, fueling a large ecosystem for both players and creators. What sets Roblox apart is its emphasis on user‑generated content and a scalable marketplace where millions of new games and experiences are continuously added by the community, rather than a single author-driven catalog. The company aims to connect people through shared, accessible digital experiences and to empower developers to build, monetize, and grow their communities on the platform.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

San Mateo, California

Founded

2004

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Simplify's Take

What believers are saying

  • Q2 2026 players spent 29 billion hours across more than 180 countries.
  • Roblox said creators earned $1.7 billion in the past 12 months through June 2026.
  • Build has already produced about 9,000 games, and 71% came from new Studio users.

What critics are saying

  • Nebraska sued Roblox on March 4, 2026; 140-plus federal child-safety lawsuits remain.
  • Reuters reported July 31, 2026 shares plunged nearly 30% after booking guidance cut.
  • If safety failures persist, regulators and app stores can cripple teen trust and growth.

What makes Roblox unique

  • Roblox Studio and Build create user games from prompts, widening creator supply fast.
  • RDC 2026 added Roblox Everywhere, letting games run in browsers and standalone apps.
  • Roblox Wallet and Card turn creators into businesses with daily payouts and spending.

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Benefits

Benefits and Perks - The health and well-being of our employees and their families is our top priority. We offer robust and comprehensive programs with variety to best meet your needs.

Well-Being Benefits - With flexible time off and a bi-annual, company-wide spring/summer recharge, Roblox knows how to balance working hard with winding down.

Financial Benefits - Competitive compensation packages, 401(k) matching, and flexible share incentives that let you choose how to share in our success.

Health and Wellness - Comprehensive medical, dental, and vision benefits, family planning resources, and 12 weeks off for all new parents.

Flexible Workplace - Our hybrid work schedule balances working onsite and working remotely. Enjoy daily lunch and an in-house fitness center when working from our San Mateo headquarters.

Growth & Insights and Company News

Headcount

6 month growth

13%

1 year growth

13%

2 year growth

10%
Bloomberg
Sep 14th, 2026
Roblox CEO: AI will create more game makers, not fewer

Roblox is launching Roblox Build, an AI-powered tool that enables users to create games directly from its mobile app. CEO David Baszucki predicts AI will increase the number of creators rather than reduce them, as the technology makes game development more accessible. The new tool generates code, 3D scenes, and avatars, lowering barriers to entry for aspiring game developers. The move reflects Roblox's broader strategy to democratise game creation through artificial intelligence. By simplifying technical aspects of development, the platform aims to attract users who may lack traditional coding skills.

TechAmerica
Sep 12th, 2026
Roblox expands AI game creation and plans games outside its platform.

Roblox expands AI game creation and plans games outside its platform. Roblox is expanding its AI game-building tools while giving creators new ways to distribute games across the web, mobile, PC and consoles. Sep 12, 2026 - 05:39 Roblox is expanding its AI-powered game creation tools while preparing to let developers distribute games beyond the Roblox platform, including through web browsers and standalone apps on mobile, PC and consoles. Discover more Professional & Trade Associations Web Apps & Online Tools The announcements, made at the company's annual Roblox Developer Conference, also include new NPC capabilities, offline play, creator financial tools and updates to game discovery and chat. Roblox expands AI game creation. Roblox is broadening access to Build, a generative AI feature that lets users create games with natural-language prompts. First introduced in July and initially limited to New Zealand, Build is expanding to Serbia and Singapore. Machine Learning & Artificial Intelligence The tool is also gaining desktop access, an asset library and more iterative controls. Later this year, Roblox plans to add prompt-based scene generation and extend that capability to Roblox Studio. Developers will eventually be able to make Roblox-powered games available as standalone apps on mobile devices, PCs and consoles. By the end of the year, players are also expected to open games directly in a browser through a shared link. New tools for games, NPCs and discovery. Roblox plans to introduce NPCs that can playtest games later this year. Creators will also be able to offer an offline mode so players can continue playing when network connections are weak. A new Friends chat tab will remain available as players move between games and will support voice typing. Roblox is also updating its discovery system to recommend shorter games to younger users and longer-play experiences to older players. The company is adding more 2D game-development capabilities, including an orthographic camera, animated image containers and direct sprite-sheet imports. In Roblox's Moments feed, players will also be able to select avatars shown in clips and purchase associated items. Roblox Wallet and Card target creator earnings. Discover more Small Business Business Operations Space Technology Roblox said creators have earned more than $5 billion on the platform since 2013, including $1.7 billion during the past 12 months. The company is launching Roblox Wallet, which will allow eligible creators to receive real-money payouts by the end of each business day and transfer funds to bank accounts. Roblox is working with Airwallex to provide the service initially to U.S. users aged 18 and older, with international expansion planned later. Roblox also previewed a Roblox Card expected to launch next year, allowing creators to spend their earnings at merchants that accept the card. CEO and founder David Baszucki said players spent more than 29 billion hours on Roblox during the most recent quarter across 180 countries, as the company looks to expand both creation tools and the reach of games built with its technology. Business & Corporate Law

Kotaku
Sep 11th, 2026
The most viral Roblox games are about to break containment.

The most viral Roblox games are about to break containment. Creators will soon be able to upload their games as standalone apps Roblox is the biggest gaming platform on the planet, but its viral hits and the subcultures that sprout up around them have mostly been siloed from the rest of the internet. That's about to change. Roblox Everywhere was announced on September 11, a way for the company, currently under investigation for child safety, to deliver games directly to players inside dedicated apps. "Our vision for Roblox Everywhere is to enable creators to reach audiences where they already are," the company wrote in a blog post about this week's Roblox Developers Conference. "Soon, creators will have the option to make their games available as standalone apps across mobile, PC, and consoles, with Roblox powering the technology and services underneath." This will make it easier for people to enter the Roblox ecosystem and allow newcomers to play with those already on the Roblox app via cross-play. The company announced a bunch of other forthcoming features as well that have the potential to supercharge a platform that's already bigger than the entirety of Steam. "By the end of this year, players will be able to join a game in-browser on Chrome (more browsers to follow) from a game's Experience Details Page - no app or install required," the company continued. "Web player allows players to click a link from anywhere (search, YouTube, X, an email from a friend, or a creator's social channel) and start playing instantly." Roblox also plans to have developers enable new features that will make offline play more seamless for people on the go, and make it easier for players to follow one another between games and chat across them. The company is investing in new tools to encourage the creation of 2D games (Roblox is currently dominated by 3D social sandboxes), and better discovery mechanisms to potentially lead to a more vibrant ecosystem less dominated by exploitative slop. And of course, there's generative AI. "Coming later this year, Scene Generator will power prompt-to-scene functionality across both Build and Studio, with greater creator control available in Studio," Roblox revealed. "By providing a text prompt and reference image, creators can generate a fully functional layout - then refine it in Studio." With this feature arriving alongside mobile-first development tools to make it easier to create short experiences, Roblox seems to be pulling the ripcord on its existing UGC production pipelines to buoy its flagging financials. And what do shareholders love more than a financial services side business? Roblox also announced a new Roblox credit card today that will help it bypass Apple and Google's app store taxes while also giving players discounts on Robux (the in-game currency) purchased with the credit card. "Roblox Card connects to Roblox Wallet, enabling creators to spend their available balance directly, anywhere it's accepted," the company wrote. "We plan to begin rolling out Roblox Card in 2027." Level up your inbox.

Yahoo Finance
Sep 11th, 2026
Roblox launches wallet for faster creator payments and off-platform gaming

Roblox is launching a digital wallet in December to streamline creator payments. The wallet will allow US-based adult creators to automatically receive daily real-world revenue from their games and transfer it to bank accounts, eliminating manual conversion requests for Robux, the platform's virtual currency. Since 2013, Roblox has paid creators over $5 billion, including $1.7 billion in the past year. The median earnings amongst roughly 42,000 paid creators is about $1,500 annually. The company also announced users will be able to launch games directly from Chrome browsers by year-end, bypassing the Roblox app. Creators can distribute games as standalone apps across mobile, PC, and consoles. The wallet, managed by payment company Airwallex, will expand internationally in 2027.

Yahoo Finance
Sep 11th, 2026
Roblox unveils standalone game apps, in-browser play and offline mode at RDC

Roblox announced platform updates at its 12th annual Roblox Developers Conference, unveiling new features for creators and players. The company plans to let creators distribute games as standalone apps across mobile, PC, and consoles, whilst maintaining Roblox's underlying technology. By year-end, players will access games directly in Chrome browsers without downloads. The platform is expanding capabilities to support 2D games, introducing features including an orthographic camera and sprite-sheet import. Additional updates include offline play mode, cross-game friends chat, and voice typing functionality. Last quarter, players spent 29 billion hours on Roblox across over 180 countries. The announcements mark Roblox's 20th anniversary and aim to expand creator reach and player accessibility across devices and platforms.