Senior Machine Learning Engineer - Engine Optimization | Roblox | San Mateo, CA

Roblox is a vibrant platform where millions of users come together to explore, create, play, learn, and connect in immersive 3D experiences crafted by a diverse global community of developers.At Roblox, we are dedicated to building innovative tools and a robust platform that empower our community to bring their imaginative experiences to life. Our vision is to transform how people unite, no matter where they are in the world or what device they use. We are on a mission to connect a billion individuals with optimism and civility, and we seek exceptional talent to help us achieve this goal.Joining Roblox means you will be at the forefront of shaping the future of human interaction, tackling unique technical challenges at scale, and creating safer, more respectful shared experiences for all.Our engine's resource management and streaming systems are crucial for providing a seamless, stable, and responsive experience for Roblox users across a vast array of devices and network conditions. These systems collaboratively manage compute, memory, bandwidth, and rendering quality while delivering dynamic world content in real time as players interact with their environments. The challenges we face include highly dynamic environments, unpredictable user behaviors, and opaque signals stemming from device and OS limitations.This position offers a unique chance to lead the integration of machine learning into real-time engine optimization. You will develop the ML framework for predictive resource allocation and content fetching, transitioning from heuristic-based logic to adaptive, data-driven decision-making. Your contributions will directly influence stability, visual quality, responsiveness, and content delivery across billions of global play sessions.

Roblox seeks a Senior Machine Learning Engineer to shape the future of immersive gaming from its San Mateo, CA headquarters. This position centers on developing and fine-tuning machine learning models that enhance user engagement and interaction across the Roblox platform. Role overview This role involves designing and implementing machine learning solutions that directly impact how millions of players experience Roblox. The work supports features and systems that drive user participation and enjoyment on a global scale. Impact Projects in this position reach a vast audience, influencing the daily experiences of players worldwide. The Senior Machine Learning Engineer will play a key part in advancing the platform’s capabilities and supporting continued growth in user engagement.

Every day, millions of users engage with Roblox to create, explore, and connect in immersive 3D environments—all crafted by our diverse community of developers and creators.At Roblox, we are committed to building innovative tools and platforms that empower our community to turn their imaginative visions into reality. Our mission is to transform how individuals connect, regardless of their location or device. As we strive to connect a billion people with positivity and civility, we seek exceptional talent to join our journey.Joining Roblox means you will be instrumental in shaping the future of human interaction, tackling unique technical challenges at scale, and contributing to the creation of safer, more respectful shared experiences for everyone.Are you an experienced engineer with a strong commitment to reliability and scalability? We are on the lookout for outstanding Software Engineers to join our Reliability team at Roblox. In this crucial role, you will lead the advancement of our systems, ensuring they achieve the highest standards of performance, reliability, and efficiency. You will collaborate with cross-functional teams to build robust infrastructure that sustains our growth. If you have a proven track record in resolving complex technical challenges, we want to hear from you. Help us shape the future of our platform and deliver exceptional value to our users.At Roblox, we envision reaching 1 billion daily active users, and we believe this engineer will be vital in propelling us toward that ambitious goal.Your Responsibilities:Create software and libraries that enhance fault tolerance and resilience.Design and develop frameworks and tools for performance testing, chaos experimentation, and improving infrastructure resiliency.Develop and implement performance monitoring and observability services to proactively identify and address infrastructure issues and platform degradations.

Join Roblox as a Senior Software Engineer and become part of a dynamic team that is shaping the future of online gaming. You will play a crucial role in developing high-quality software solutions that enhance our platform and improve user experiences. Collaborate with cross-functional teams, contribute to architectural decisions, and mentor junior engineers.

At Roblox, we engage tens of millions daily in a vibrant 3D universe where players can explore, create, and connect with friends. Our global community of developers and creators fuels this immersive experience.We are dedicated to crafting the tools and platform that empower our community to realize their creative visions. Our goal is to revolutionize how people connect from anywhere in the world on any device. Join us in our quest to unite a billion individuals with positivity and kindness, and be part of the exceptional talent that drives this mission.A career at Roblox means you will help redefine human interaction, tackle unique technical challenges at scale, and contribute to creating safer, more respectful shared experiences.As a Senior Software Engineer on our Matchmaking team, you'll play a critical role in developing and overseeing essential services within the Roblox ecosystem. Your work will influence our matchmaking processes, optimizing the selection of the most suitable game server for each play request, which is a complex O(n²) problem. Our system supports millions of concurrent players and ensures seamless game orchestration across globally distributed data centers, adapting to Roblox's remarkable growth. The Matchmaking team's mission is to deliver an unparalleled player experience by selecting the optimal game and managing performance across our worldwide data centers.

Roblox is looking for a Senior Frontend Software Engineer to help shape engaging user interfaces for a global audience. This position is based in San Mateo, CA. Role overview This role centers on designing and building interactive frontend features that reach millions of players worldwide. The work involves collaborating with teams from different disciplines to deliver polished and intuitive experiences. What you will do Create and implement user interfaces that support Roblox’s platform and community. Work closely with engineers, designers, and product managers to refine and launch new features. Apply current frontend technologies and development practices to improve usability and performance. Requirements Experience developing modern frontend applications. Strong skills in designing user interfaces for large-scale platforms. Ability to collaborate within cross-functional teams.

Every day, tens of millions of users engage with Roblox to explore, create, play, learn, and connect with friends through immersive 3D digital experiences crafted by our global community of developers and creators. At Roblox, we are developing the tools and platform that empower our community to bring any experience they can envision to life. Our mission is to transform the way individuals connect, from anywhere in the world, and on any device. We aspire to unite a billion people with positivity and respect, and we are seeking exceptional talent to help us achieve this goal. A career at Roblox means you will contribute to the future of human interaction, tackle unique technical challenges at scale, and help foster safer, more respectful shared experiences for all.As a Senior Machine Learning Engineer on the Economy ML team, you will develop models that enhance ranking, personalization, pricing, and optimization across Roblox’s economic ecosystems, including the Marketplace, Developer Monetization, and Payments. Your contributions will significantly influence how users find virtual items, how creators earn revenue, and how the platform evolves sustainably.The Economy ML team is constructing the machine learning foundation for Roblox’s virtual economy—from smart pricing and personalized storefronts to dynamic layout optimization and understanding avatar content. We closely collaborate with Marketplace, Payments, and Developer Monetization teams to create ML systems that drive long-term value across engagement, retention, and creator earnings.Your Responsibilities:Translate vague product challenges into actionable designs and deliver end-to-end ML solutions for ranking, recommendation, pricing, and content comprehension across economic platforms.Construct and refine deep learning retrieval and ranking models that personalize item and widget ordering across the Marketplace and other shopping interfaces.Create models and policies that optimize pricing, conversion, and revenue while maintaining ecosystem health, enhancing user experience, and ensuring creator success.Oversee the complete ML lifecycle for your projects: data exploration, feature engineering, model design, training, evaluation, and production deployment on Roblox’s ML platform.Design and execute robust testing frameworks to validate model performance and business impact.

Every day, millions of users engage with Roblox to explore, create, play, learn, and connect within vibrant 3D digital environments crafted by our diverse global community of developers and creators.At Roblox, we are dedicated to building tools and a platform that enable our community to turn their imaginative experiences into reality. Our vision is to transform how people connect, from any location around the globe, across any device. We are on a mission to unite a billion individuals with positivity and respect, and we are searching for exceptional talent to help us achieve this goal.A career at Roblox means participating in the evolution of human interaction, tackling unique technical challenges on a grand scale, and contributing to creating safer, more respectful shared experiences for all.WHY SAFETY?At Roblox, our commitment is to connect a billion people with optimism and civility. The Safety organization is dedicated to leading the way in fostering civil immersive online communities. We employ systematic strategies to detect, eliminate, and prevent harmful accounts, content, and behavior, ensuring that Roblox accounts remain secure and uncompromised. Our expertise covers a wide array of technological domains, including machine learning, 3D model classification, experimentation, automation, detection workflows, and AI-driven text filtering. Collaborating closely with product teams, we leverage our toolset to uncover new possibilities, influence product development, and enhance safety features while measuring their impact on our community of users and developers. This work is essential in maintaining Roblox as a safe, civil, and inclusive space, promoting positive interactions among individuals worldwide.WHY ALT DEFENSE?Safety and civility are our top priorities at Roblox. The Alt Defense team is at the forefront of this initiative, tasked with addressing one of the most challenging adversarial issues on our platform: Alternate Account Detection and Prevention. When malicious users are banned from Roblox, they often attempt to return under new identities. Our mission is to thwart these attempts immediately. As the Technical Lead for this team, you will design and implement a cutting-edge detection system operating at an enormous scale—analyzing billions of accounts and identifying repeat offenders within minutes. Additionally, you will support various use cases for alternate account detection throughout the organization. You will report directly to the Senior Engineering Manager of the Account Identity Team.

Join Roblox, where millions of users explore, create, play, learn, and connect in immersive 3D experiences crafted by our vibrant community of developers and creators.At Roblox, we are revolutionizing the tools and platform that enable our community to bring their wildest imaginations to life. Our mission is to transform how people connect from anywhere in the world, on any device. We aim to unite a billion individuals with positivity and civility, and we are seeking exceptional talent to help us achieve this goal.A career with Roblox means shaping the future of human interaction, tackling unique technical challenges at scale, and contributing to safer, more civil shared experiences for all.As a Finance Analytics Engineer, you will play a pivotal role within our Finance team, helping to mold our data ecosystem. You will design, build, and maintain scalable data pipelines that convert raw data into a reliable and trustworthy source of truth for the Finance organization and beyond.Your expertise will bridge the Finance and Data Engineering teams, utilizing your finance domain knowledge to comprehend their data requirements, translate them into technical specifications, and create the necessary data infrastructure. Your contributions will significantly influence financial planning, forecasting, and strategic decision-making throughout the company.You will report directly to the Senior Manager of Finance Data, working from our San Mateo, CA office on Tuesdays through Thursdays.

At Roblox, our platform allows millions of users to explore, create, and connect in immersive 3D experiences crafted by our diverse community of developers. Every day, players from around the globe engage in imaginative play and learning, and we are dedicated to empowering them with the tools they need to bring their visions to life.Our mission is to foster a connected world, inspiring a billion people to engage with optimism and respect. We are seeking exceptional talent to join us on this journey, shaping the future of human interaction and tackling unique challenges at scale to create safe, enjoyable shared experiences.As a Senior Machine Learning Engineer at Roblox, you will tackle complex problems using cutting-edge AI and machine learning technologies to innovate the experiences of our growing user community. We are looking for leaders in AI and ML to spearhead the development of cost-effective machine learning solutions, guiding the design of essential components for on-device ML operations. Your work will focus on enhancing model architectures, facilitating efficient deployment to cloud and client systems, and managing sophisticated tasks such as Generative AI model deployment. You will play a key role in optimizing architectures across a variety of compute devices, making the best use of available resources. Join us in our exciting journey!

Join Roblox as a Senior Machine Learning Engineering Manager and lead a dynamic team focused on developing cutting-edge machine learning solutions. In this role, you will be responsible for overseeing the design, implementation, and optimization of algorithms that enhance user experience and gameplay. Your leadership will guide the team in leveraging data to drive strategic decisions, ensuring our platform remains at the forefront of technology.

At Roblox, millions of individuals engage daily to explore, create, play, learn, and connect with friends in immersive 3D digital experiences crafted by our global community of developers and creators.We are dedicated to building tools and platforms that empower our community to realize their imaginative experiences. Our vision is to transform how people connect from anywhere in the world and on any device. Our mission is to unite one billion people with optimism and civility, and we are seeking exceptional talent to help us achieve this goal.Joining Roblox means you will play a pivotal role in shaping the future of human interaction, tackling unique technical challenges at scale, and contributing to the creation of safer, more civil shared experiences for all.The Rights Manager and Content Suitability teams, part of our Safety Experience, are in search of a Senior Machine Learning Engineer.The Safety Experience organization develops tools and systems that empower Roblox users and creators to control their experiences while enabling moderators to uphold our community standards. Our focus includes education, intervention, visibility, and action.Our initiatives include:Monitoring and influencing user behavior for enhanced safety.Building scalable and efficient moderation platforms.Providing transparency and educational resources for parents and developers.Empowering users to manage their own safety.Allowing IP owners to manage their creations on Roblox.Delivering quick and accurate support through our Customer Care Chatbot.Your responsibilities will include:Implementing machine learning solutions for safety-focused systems.Promoting a culture of technical excellence and inclusivity.Breaking down long-term product requirements into actionable phases for continuous improvement.Designing and building large-scale machine learning models with billions of parameters, ensuring they are production-ready.Facilitating complex technical decisions with empathy and foresight.

Join Roblox, where millions engage daily to explore, create, play, learn, and connect in immersive 3D experiences crafted by our global community of developers and creators.At Roblox, we are committed to building innovative tools and platforms that empower our community to bring their imaginative experiences to life. Our vision is to transform the way people connect from anywhere in the world and on any device. We are dedicated to connecting a billion people with positivity and respect, and we are on the lookout for exceptional talent to help us achieve this goal.A career at Roblox means you will contribute to shaping the future of human interaction, tackle unique technical challenges at scale, and help foster safer, more respectful shared experiences for all.The Core Services team oversees the essential infrastructure and API stack while developing high-throughput microservices that power Roblox. These services must be fast, reliable, and highly scalable, significantly impacting the daily experience of every Roblox user. Additionally, the team is responsible for shared libraries, infrastructure microservices, and the web infrastructure utilized by all Roblox full-stack feature teams. We deploy testable and configurable features that facilitate rapid experimentation, data collection, and optimization for performance and user engagement. Core Services is pivotal to the Roblox experience.As a Senior Software Engineer on our team, you will take ownership of and drive the development and management of our core infrastructure, API stack, and microservices. These elements are critical to supporting various services and platforms within Roblox, including our studio environment. You will also play a vital role in developing tools and frameworks for full-stack teams. This is an opportunity to take charge of high RPS (requests per second) services, contribute to the re-architecture of systems to support our company's growth, and collaborate with diverse teams, including Infra and product teams at Roblox, leading initiatives and making a significant impact across the organization.Here are some highlights of how we power Roblox:Microservices - We manage over 50 microservices, the highest of any full-stack engineering team at Roblox. These services are essential to the operation of Roblox, forming the core connection between users and experiences.

Join Roblox, where millions of users engage daily to explore, create, play, learn, and connect through immersive 3D digital experiences crafted by our global community of developers and creators.At Roblox, we are dedicated to developing tools and platforms that enable our community to transform their imaginative ideas into reality. Our mission is to redefine how people connect across the globe, regardless of location or device. We strive to unite a billion people with positivity and respect, and we are on the lookout for exceptional talent to help us achieve this ambitious goal.A career at Roblox means you will contribute to shaping the future of human interaction, tackling unique technical challenges on a large scale, and assisting in crafting safer, more civil shared experiences for all users.As a Software Engineer on our Game Solutions team, you will explore the limits of what is possible in both established and emerging experiences on Roblox. Your role will involve prototyping, deploying solutions alongside external development studios, and iterating with the latest engine features, ultimately allowing you to significantly influence our engine roadmap and APIs.

About Roblox Roblox brings together millions of people each day through immersive 3D experiences built by a global community of creators. The company focuses on developing tools and platforms that help creators turn ideas into reality. Roblox aims to connect a billion people, encouraging creativity and collaboration across devices while promoting positivity and respect. Role Overview The Enterprise Applications Engineer joins the Corporate Engineering team in San Mateo, CA. This role centers on planning, designing, implementing, and maintaining SaaS applications and tools used across the company. The position supports the alignment of enterprise SaaS technology architecture and governance with Roblox's business strategies. The engineer will also help drive self-service solutions and improve operational efficiency. Key Responsibilities Plan, design, implement, and maintain enterprise SaaS applications and tools Align SaaS technology architecture and governance with business initiatives Promote self-service capabilities for internal teams Identify and deliver improvements to increase efficiency Location This position is based in San Mateo, CA, United States.

Roblox is a vibrant platform where millions of users engage daily to explore, create, play, learn, and connect with friends through immersive 3D digital experiences, all crafted by a global community of developers and creators.Our mission at Roblox is to empower creators to bring their imaginative visions to life by building an innovative platform and tools that redefine how individuals connect worldwide, on any device. We aim to unite a billion people with positivity and respect, and we are seeking exceptional talent to help us achieve this goal.Joining Roblox means you will contribute to shaping the future of human interaction, addressing unique technical challenges at scale, and fostering safer and more civil shared experiences for users around the globe.About the Role:As a leader on the experimentation platform team, you will spearhead the development and scalability of our industry-leading experimentation tools designed for internal teams and developers. With approximately 98 million daily users and hundreds of experiments underway, our platform efficiently processes millions of queries per second.We are seeking a highly skilled engineer who is enthusiastic about creating scalable systems for both online execution and offline analysis to enhance the experience for our users and creators. Your contributions will directly influence the interface for defining experiments, calculating and tracking metrics, and visualizing results to launch successful variants.

Every day, millions of users engage with Roblox, diving into immersive 3D experiences crafted by our vibrant global community of developers and creators.At Roblox, we empower our community with innovative tools and platforms that bring their imaginations to life. Our mission is to transform how people connect from anywhere, on any device, fostering a world of optimism and civility. We are seeking exceptional talent to help us reach our goal of connecting a billion people.Embarking on a career at Roblox means shaping the future of human interaction, tackling unique technical challenges at scale, and creating safer, more respectful shared experiences for all.As our Ads business rapidly expands, we are developing a large-scale machine learning infrastructure aimed at delivering impactful performance ads to our user base and substantial value to our advertisers.In the role of Senior Machine Learning Infrastructure Engineer within our Ads ML Infra team, you will design and implement scalable, reliable, and high-performance infrastructure that underpins machine learning systems throughout our organization. You will work with vast datasets, handling hundreds of billions of engagements while redefining how we deliver performance ads to millions.

Join the dynamic team at Roblox, where millions of users engage in a vibrant 3D metaverse created by our global community of developers and creators.At Roblox, we are committed to equipping our community with the tools and platform needed to turn their imaginative visions into reality. Our mission is to redefine how people connect globally, fostering interactions from any location and on any device. We aim to unite a billion people through positivity and respect, and we are searching for exceptional talent to help us achieve this goal.A role at Roblox means you will contribute to shaping the future of human interaction, tackling unique technical challenges at scale, and enhancing the safety and civility of shared digital experiences for all.As we witness unprecedented growth in daily active users, our team is at the forefront of pioneering the next generation of advertising within the immersive metaverse. We play a crucial role in connecting global brands with our vast community of creators, delivering billions of impressions.We are looking for a skilled Software Engineer to join the Ads Experience team. You will collaborate with seasoned engineers and product leaders to develop our monetization experience, which encompasses Advertiser Experience (Roblox Ads Manager), Brand Experience (Brand Ads & Integrations), and Publisher Experience (Creator Monetization & Commerce).This is a unique opportunity to advance your career by tackling complex technical challenges. You will help shape the features that dictate how advertising operates within a 3D metaverse, balancing user experience with a vast real-time economy.Your ResponsibilitiesDevelop the Roblox Ads Manager: Design and implement full-stack features for our flagship advertising platform, writing high-quality code for both the React/TypeScript frontend and Go/C# backend services.Implement Brand Ad Offerings: Work with senior engineers to devise the logic and delivery mechanisms for immersive 3D ad units, ensuring optimal performance within games.Support Creator Success: Create tools and dashboards that facilitate easy onboarding for game creators, enabling them to manage their ad inventory and monitor revenue and engagement metrics.Ensure System Reliability: Write comprehensive unit tests and maintain system performance for all developed features.

Join Roblox as a Machine Learning Engineering Manager focused on Critical Harms where you will lead innovative projects that harness the power of machine learning to enhance safety and user experience on our platform. You will oversee a talented team dedicated to developing cutting-edge algorithms and models that proactively identify and mitigate risks.

Join Roblox as a Senior Product Designer, where you will play a pivotal role in shaping the user experience for our innovative platform. Collaborate with cross-functional teams to create engaging designs that captivate our diverse audience. This is an exciting opportunity to leverage your design expertise to enhance our product offerings.