Principal Software Engineer - Game Engine Systems at Roblox

At Roblox, we engage tens of millions of users daily who come to explore, create, play, learn, and connect with friends in immersive 3D digital experiences—crafted by our vibrant global community of developers and creators.We are revolutionizing the tools and platform that empower our community to bring their imaginative experiences to life. Our vision is to transform how people connect from anywhere in the world, across any device. Join us on our mission to connect a billion people with positivity and respect, as we seek exceptional talent to help us realize this vision.A role at Roblox means you will be instrumental in shaping the future of human interaction, tackling unique technical challenges at scale, and helping create safer, more respectful shared experiences for all.The Engine Networking Team is essential in uniting players by ensuring seamless communication of the game state. As a Principal Engineer on this team, you will enhance the player experience in a near-synchronous world. Your expertise in networking and asset loading will be vital to delivering a smooth gaming experience. You will engage across all facets of the game platform in pursuit of real-time communication throughout Roblox.

Join Roblox, where millions of users daily immerse themselves in 3D digital experiences crafted by our vibrant community of developers and creators.We are committed to building innovative tools and a platform that empower our users to turn their imaginative visions into reality. Our mission is to redefine how individuals connect globally, regardless of device or location. We aspire to connect one billion people with positivity and respect, and we are seeking exceptional talent to help us achieve this goal.A career at Roblox means playing a pivotal role in shaping the future of human interaction, facing unique technical challenges at scale, and contributing to creating safer, more respectful shared experiences for all.As a Senior Software Engineer on our Game Solutions engineering team, you will explore the potential of leading and emerging experiences on Roblox. This team collaborates closely with a select group of partners to develop games in strategic genres that test the limits of our engine capabilities. You will focus on prototyping, implementing solutions with external development studios, and iterating with cutting-edge engine features, ultimately having a significant impact on our engine roadmap and APIs.

Every day, millions of users engage with Roblox to explore, create, and connect with friends through immersive 3D digital experiences, all crafted by our vibrant global community of developers.At Roblox, we are dedicated to building advanced tools and a platform that enable our community to transform their imaginative ideas into reality. Our mission is to revolutionize how people connect from anywhere in the world, on any device. We aspire to unite a billion individuals with positivity and respect, and we seek exceptional talent to help us achieve this goal.Joining Roblox means you will be instrumental in shaping the future of human interaction, tackling unique technical challenges at scale, and contributing to safer, more inclusive shared experiences for everyone.As a Senior Software Engineer on the Engine DataModel team, you will take charge of innovating the foundational components that underpin the Roblox platform. The DataModel in the Roblox Engine is a tree-like structure similar to a scene graph found in other 3D engines. This position will report to the engineering manager and is based at our headquarters in San Mateo, CA, operating in a hybrid model (three days a week in-office from Tuesday to Thursday).Our team is responsible for:The core structures and systems that build and interact with the DataModel.The C++ reflection bindings that shape the Engine’s Luau API surface, allowing creators to engage with the DataModel. We utilize custom code generation tooling to produce the C++ for these reflection bindings and related structures.DataModel serialization and many other critical functions!Your Responsibilities:Develop engine code that performs optimally for all user-generated games on the Roblox platform.Build the essential systems and data structures within the Roblox engine, collaborating with other teams to devise universal solutions.Take ownership of projects throughout their entire lifecycle.Execute code that performs efficiently across all devices supported by Roblox—from desktop to mobile to console.

Every day, millions of users engage with Roblox to dive into, create, and share immersive 3D digital experiences—all powered by our vibrant community of developers and creators.At Roblox, our mission is to empower creators by providing the tools and platform necessary to bring their imaginative experiences to life. Our vision is to revolutionize global connectivity, enabling people to connect and engage from anywhere, on any device. We strive to connect a billion individuals with positivity and civility, and we are on the lookout for exceptional talent to join us on this journey.Joining Roblox means being at the forefront of shaping the future of human interaction, tackling unique technical challenges at scale, and contributing to safer, more respectful shared experiences for all.As a Senior Software Engineer on the Engine DataModel team, you will play a pivotal role in innovating and maintaining the foundational elements that are essential to the Roblox platform. The DataModel within the Roblox Engine resembles a tree-like structure similar to a scenegraph found in other 3D engines. This position reports to the engineering manager and is based at our headquarters in San Mateo, CA, following a hybrid work model of three days in the office (Tuesday to Thursday).Our team is responsible for:The core structures and systems used to build and interact with the DataModel.The C++ reflection bindings that create the Engine’s Luau API surface, enabling creators to interact with the DataModel. We utilize custom code generation tooling to produce the C++ for these bindings and other related structures.DataModel serialization and much more!You will:Develop high-performance engine code for all user-generated games on the Roblox platform.Build the core systems and data structures utilized in the Roblox engine, collaborating with other teams to devise universal solutions.Take ownership of projects throughout their entire lifecycle.Execute code that operates efficiently across all devices supported by Roblox, from desktop clients to mobile and console clients.You have:Experience in developing robust systems-level C++ programming.H...

Roblox is a platform where millions of users gather daily to explore, create, play, learn, and connect through immersive 3D experiences crafted by our vibrant global community of developers.At Roblox, we are dedicated to developing tools and platforms that enable our community to realize their imaginative visions. Our aim is to transform the way people connect, regardless of their location or device. We are on a journey to unify a billion people with positivity and respect, and we are seeking talented individuals to join us on this mission.A career at Roblox offers you the chance to influence the future of human interaction, tackle unique technical challenges at scale, and contribute to the creation of safer, more respectful shared experiences for all users.The Engine Networking Team is essential in bringing players together by ensuring seamless communication of the game state across all users. As a Principal Network Transport Engineer, you will enhance the player experience by creating a nearly synchronous game environment. Similar to how nerves coordinate actions within our bodies, our networking system synchronizes all devices to deliver a smooth gaming experience. You will engage across various aspects of the game platform, striving for real-time communication across the entire Roblox ecosystem.

Join Roblox, where millions engage daily to explore, create, play, learn, and connect through immersive 3D digital experiences crafted by a vibrant community of developers and creators.At Roblox, we are at the forefront of building innovative tools and platforms that empower our community to transform their imaginative ideas into reality. Our vision is to revolutionize how people connect globally, transcending geographical barriers and device limitations. We aim to unite a billion individuals with a spirit of optimism and civility, and we are seeking exceptional talent to help us achieve this mission.A career with Roblox means contributing to the evolution of human interaction, tackling unique technical challenges at scale, and fostering safer, more respectful shared experiences for all.As a pivotal member of Roblox’s database team, you will be instrumental in developing a next-generation, multi-tenant database platform that seamlessly scales and supports every online data workload at Roblox. In your role as a principal engineer, you will influence the architecture, design, and deployment of vital database capabilities that ensure our services remain fast, reliable, and efficient on a global scale. You will report to the Technical Director for Storage.Your Responsibilities:Innovate and implement new engine features—including indexing, storage formats, WAL and replication protocols, sharding, and enhancements to the query planner—to push the boundaries of latency, throughput, and availability.Advance the control plane to provide elastic scaling, autonomous healing, and zero-downtime schema or tenant transitions across global regions.Analyze and optimize critical code paths utilizing kernel-level tracing and advanced performance tools; spearhead systematic reductions in tail latency.Establish engineering best practices by leading design reviews, performance benchmarks, failure drills, and retrospectives following incidents.Automate processes: create frameworks for testing, CI/CD, rollout safety, observability, and autoscaling to ensure the platform operates autonomously at scale.Mentor and empower engineers, fostering deep expertise in database craftsmanship and sharing knowledge across Storage, Platform, and product teams.Engage with the open-source community—contributing upstream improvements and fostering collaboration.

At Roblox, we empower a global community of developers and creators to shape their digital experiences. Every day, millions engage with our platform to explore, create, play, learn, and connect with friends in immersive 3D environments.Our mission is to transform how people interact across the globe, from any device. We envision a future where we connect a billion individuals with positivity and respect, and we seek extraordinary talent to help realize this goal.Joining Roblox means being part of a pioneering team that addresses unique technical challenges and enhances the safety and civility of shared experiences for all users.The Engine Networking Team plays a crucial role in synchronizing player experiences by managing the communication of game states. As a Principal Engineer, you will ensure that players enjoy a seamless, almost real-time gaming environment. Your expertise will contribute significantly to the networking and asset loading processes, enhancing the overall player experience.

Roblox is a vibrant platform where millions of users engage daily to explore, create, play, learn, and connect with friends in rich 3D digital environments crafted by our diverse community of developers and creators.At Roblox, we are innovating the tools and platform that empower our community to bring their imaginative experiences to life. Our vision is to transform how people connect, from any corner of the globe, across any device. We are on a journey to unite a billion people with positivity and respect, and we are seeking exceptional talent to join us in this mission.Joining Roblox means you will have the opportunity to shape the future of human interaction, tackle unique technical challenges at scale, and contribute to creating safer, more civil shared experiences for everyone.As a Principal Software Engineer for Engine UI at Roblox, you will be integral in enhancing our state-of-the-art game engine, expanding the User Interface capabilities across the entire Roblox platform. This role will empower our game developers to create high-quality, performant UI that fosters meaningful interactions.

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.

Join Roblox, where millions of users engage in creating, exploring, and connecting through immersive 3D experiences crafted by our vibrant developer community.At Roblox, we are devoted to enhancing the tools and platform that allow our community to transform their imaginative ideas into reality. Our goal is to redefine global connectivity, enabling seamless interactions across diverse devices. We aspire to unite a billion individuals with positivity and respect, and we seek exceptional talent to help us achieve this vision.A career with Roblox means influencing the future of human interaction, tackling complex technical challenges at scale, and fostering safer, more respectful shared experiences for all.The Engine Networking Team is pivotal in synchronizing player experiences by efficiently managing game state communications. As a Principal Engineer on our team, you will ensure players immerse themselves in a nearly real-time gaming environment. Your work will encompass various aspects of our platform, aiming for seamless real-time communication throughout Roblox.

At Roblox, we bring together millions of users daily to explore, create, play, learn, and connect with friends in immersive 3D digital experiences crafted by our vibrant global community of developers and creators.We are dedicated to building innovative tools and platforms that empower our community to manifest their wildest imaginations. Our vision redefines how people connect from anywhere in the world, on any device. Join us on a mission to connect a billion individuals with positivity and courtesy, as we seek exceptional talent to help us achieve this goal.A career at Roblox means shaping the future of human interaction, tackling unique technical challenges on a massive scale, and contributing to the creation of safer, more civil shared experiences for all users.As our daily active user base expands at an unprecedented rate, we are pioneering the next generation of advertising in an immersive metaverse. Our team lies at the heart of the Roblox Ads ecosystem, delivering billions of impressions while providing the essential infrastructure that connects global brands with our extensive community of creators.We are on the lookout for a Principal Software Engineer to spearhead the technical strategy and execution for the Ads Experience team. This team manages the entire monetization experience, including Advertiser Experience (Roblox Ads Manager), Brand Experience (Brand Ads & Integrations), and Publisher Experience (Creator Monetization & Commerce).This position presents a foundational technical challenge that transcends conventional ad-tech. You will design the scalable backbone of our monetization system, championing the technical vision for our Ads Manager, immersive Brand Ads formats, and creator solutions, while integrating AI and balancing a three-sided marketplace economy in real time.

Join Roblox as a Principal Software Engineer and play a pivotal role in shaping the future of distributed systems and storage solutions. You will work closely with a talented team dedicated to delivering high-performance systems that enhance user experience and empower creators. Your expertise will help us innovate and scale our infrastructure to support millions of players and developers around the globe.

Join Roblox, where millions of users engage daily to explore, create, and connect in dynamic 3D environments crafted by a talented global community of developers. At Roblox, we're dedicated to building innovative tools and platforms that empower our users to bring their creative visions to life. Our mission is to reimagine how people connect from anywhere in the world on any device, fostering a community of positivity and civility.As a Principal Engineer on our Engine Networking Team, you will play a pivotal role in enhancing player experiences by ensuring seamless communication of game states. Your expertise in networking and asset loading will be crucial in delivering smooth, near-synchronous gameplay experiences, as you dive into various aspects of our game platform striving for real-time connectivity across Roblox.In this role, you will:Lead a talented team of engineers with over 8 years of industry experienceDemonstrate a deep understanding of game networking, with a keen interest in open-source technologiesBring experience in asset loading, rendering, and networking, ideally from a Game Engine/Studio background (Desirable)Exhibit exceptional systems-level C++ programming skills, with a fascination for CPU operations involving smart pointers, templates, and memory managementHave a meticulous approach to optimizing network exchanges, focusing on minimizing latency and maximizing efficiencyPossess an understanding of operating system interactions upon code executionWe seek candidates who have:Experience working on the core architecture of a multiplayer game engine, addressing challenges related to scalability, performance, latency, and throughput in client/server modelsEngaged with large-scale multithreaded distributed systems that connect millions of users globallyWorked across various devices supported by Roblox, including desktop, mobile, and console clients

Join Roblox as a Principal Software Engineer, where you will be at the forefront of the gaming industry, developing innovative software solutions that enhance the user experience. You will collaborate with cross-functional teams to design, implement, and optimize systems that power our platform.

Roblox is a dynamic platform where millions of users engage in 3D immersive experiences, exploring, creating, learning, and connecting with friends—all made possible by our vibrant community of developers and creators.At Roblox, we are committed to empowering our community by providing innovative tools and platforms that transform their imaginative ideas into reality. Our goal is to redefine how people interact globally, across various devices. We aspire to connect a billion users with a spirit of optimism and civility, and we are seeking exceptional talent to help us achieve this vision.Joining Roblox means being part of a team that shapes the future of human interaction, tackling unique technical challenges at scale, and contributing to the creation of safe and respectful shared environments.Are you a seasoned engineer with a strong focus on reliability and scalability? We invite you to join our Reliability team at Roblox. In this crucial role, you will lead the transformation of our systems, ensuring they achieve top-tier performance, reliability, and efficiency. Collaborate with cross-functional teams to build a robust infrastructure that fuels our growth. If you have a proven record of addressing complex technical challenges, we want to connect with you. Join us in crafting the future of our platform and delivering unmatched value to our users.At Roblox, our ambitious vision aims for 1 billion daily active users, and we believe your expertise will be vital in propelling us toward that goal.

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.

Join Roblox as a Principal Software Engineer specializing in Connections, where you will lead innovative projects that enhance user experiences across our platform. You will work collaboratively with cross-functional teams to design and implement scalable solutions that power millions of interactions on Roblox.

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.

Join Roblox as a Principal Software Engineer in our Sharing team, where you will play a pivotal role in developing and enhancing our platform. This position offers the unique opportunity to work on cutting-edge technology that powers millions of users worldwide. You will collaborate with cross-functional teams to design and implement scalable solutions that improve user engagement and drive platform innovation.

Every day, tens of millions of users engage on Roblox to explore, create, play, learn, and connect with friends in immersive 3D digital worlds—all crafted by our vibrant community of developers and creators. At Roblox, we are dedicated to building the tools and platform 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 on any device. We are on a mission to unite one billion individuals with positivity and respect, and we are seeking exceptional talent to help us achieve this goal. A career at Roblox means playing an integral role in shaping the future of human interaction, addressing unique technical challenges at scale, and contributing to the creation of safer, more respectful shared experiences for everyone.As a Principal Software Engineer on the Compute Cell Lifecycle team, you will design, support, and enhance the infrastructure at Roblox while we expand our private cloud. The Cell Lifecycle's mission is to create and maintain a sustainable and dependable compute primitive across all backend environments (including all on-premises and public cloud data centers) for every Roblox engineer. Join us in creating, supporting, and evolving the infrastructure that manages millions of containers handling hundreds of millions of requests per second, thereby making a lasting impact on the company.Your Responsibilities:Develop and enhance a cell primitive for Roblox that supports the majority of Roblox’s compute workloads.Collaborate closely with other teams in Compute and across the organization to introduce new features, support new workloads, and define the appropriate cross-system APIs as we broaden the 'cells' footprint.Safely and efficiently manage a critical at-scale system.