Senior Software Engineer, Client Systems

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...

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.

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.

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.

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.

Join Roblox, where millions engage daily to explore, create, play, learn, and connect in vibrant 3D digital worlds crafted by our global developer community.At Roblox, we're on a mission to build a platform that empowers creators to bring their most imaginative experiences to life. Our vision is to transform how people connect from anywhere, on any device. We aim to connect a billion people with positivity and respect, and we invite extraordinary talent to help us achieve this goal.A career at Roblox means playing a pivotal role in shaping the future of human interaction, tackling unique technical challenges at scale, and crafting safer, more inclusive shared experiences.As a Senior Software Engineer focusing on Ads Experience, you will innovate a fresh advertising interface for our advertisers and publishers. This team will equip advertisers with tools for effective ad campaigns and enable publishers to generate revenue through immersive advertisements. You'll be instrumental in developing a groundbreaking experience that will be vital for our future in Immersive Ads, reporting to our Engineering Manager.In this role, you will design robust and scalable systems for high-traffic areas across our Ads products, leveraging React and other technologies to build components rapidly and efficiently across various devices.If you possess a profound understanding of frontend technologies and a passion for enhancing client-server interactions, you will thrive in our environment!

Join Roblox, where millions of users engage daily in 3D immersive experiences crafted by a vibrant community of developers and creators.At Roblox, we offer innovative tools and a platform that empowers our community to transform their imaginative ideas into reality. Our mission is to redefine how individuals connect globally, transcending geographical boundaries and device limitations. We aspire to unite a billion individuals with a spirit of optimism and civility, and we are in search of extraordinary talent to help us achieve this goal.A career at Roblox is an opportunity to shape the future of human interaction, tackling unique technical challenges at scale, and contributing to the creation of safer, more civil shared experiences for everyone.As a Senior Software Engineer on the Sharing team, you will lay the groundwork for how millions of users capture, share, and discover content on Roblox. You'll work across the technology stack to create high-performance experiences, from client-side user interactions to backend systems serving billions of content items each day.You will collaborate closely with product and engineering teams to define architecture, enhance reliability, and drive measurable improvements in engagement and content growth. This role is perfect for engineers who excel in building scalable, developer-facing, and user-facing products that merge technical depth with creative impact.

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.

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.

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, where millions of users engage in immersive 3D experiences crafted by our dynamic community of developers and creators each day.At Roblox, we are dedicated to providing the tools and platform that enable our community to manifest their imaginative visions into reality. Our goal is to transform how people connect globally, across various devices. We are on a quest to unite a billion individuals with positivity and respect, and we need exceptional talent to help us achieve this mission.A career with Roblox allows you to influence the future of human interaction, tackle unique technical challenges at scale, and contribute to creating safer, more respectful shared experiences for all.What You’ll Do:As a Senior Software Engineer on our Avatar Identity engineering team, you will design and implement experiences on Roblox that enhance the building and customization of player avatars. These avatars are central to every player's journey in Roblox, and your work will shape a novel customization approach for millions of users daily.Your Responsibilities:Develop innovative user-facing experiences on Roblox that empower players to customize their avatars in fresh and exciting ways.Enhance the Roblox app (Luau/React) by adding new features and expanding the game APIs used by third-party developers for avatar customization (C++).Actively contribute to the team’s roadmap and strategic direction.Work collaboratively with engineers and cross-functional partners (product, design, art) within the Avatar and Marketplace teams.

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.

Join Roblox, where millions of users engage daily in creating, exploring, and connecting within immersive 3D digital experiences crafted by our vibrant community of developers and creators.At Roblox, we are committed to building tools and a platform that empower our users to bring their wildest imaginations to life. Our vision is to transform the way people connect globally, from any device. We are on a quest to unite a billion individuals with positivity and respect, and we are searching for exceptional talent to join us on this journey.A career with Roblox means you will have the opportunity to influence the future of human interaction, tackle unique technical challenges at scale, and contribute to creating safe and respectful shared experiences for all.Why Safety?At Roblox, we aim to foster a billion connections rooted in optimism and civility. Our Safety organization is dedicated to establishing civil immersive online communities by proactively identifying, eliminating, and preventing harmful content and behaviors while ensuring robust account security. We adapt to regulatory changes and market growth through a wide array of technological solutions, including machine learning, automation, and scalable distributed systems. Collaborating closely with product teams, we utilize these resources to uncover new opportunities, influence product strategy, and build safety solutions that positively impact our community.Why Creator Trust?The Creator Trust team is prioritizing creator safety and trust as a key product focus. Our mission is to deliver a consistent, equitable, and transparent safety experience, empowering creators to develop successful experiences and marketplace assets without the challenges of unclear systems. We also support creators in safeguarding and managing their intellectual property rights across our platform. If you are passionate about empowering creators and tackling complex platform challenges, then the Creator Trust team is where you can make a significant impact.You Will:...

Join Roblox as a Senior Software Engineer - Engine Reliability and be a key player in ensuring the robustness and performance of our gaming engine. In this role, you will collaborate with talented engineers to develop innovative solutions that enhance the reliability of our systems, allowing millions of users to enjoy seamless gaming experiences.

At Roblox, we empower millions of users to explore, create, play, and connect through immersive 3D digital experiences, all crafted by our vibrant community of developers and creators.Our mission is to redefine how people come together from any corner of the globe and on any device. We are committed to fostering a community that connects a billion people with optimism and civility, and we are on the lookout for exceptional talent to join us in this endeavor.A career at Roblox means you will be at the forefront of shaping human interaction, tackling unique technical challenges at scale, and contributing to the creation of safe, civil shared experiences for all.As a Senior Software Engineer on our Systems team, your contributions will directly impact the foundational elements of Roblox. You will develop robust software that supports our extensive community of over 2 million developers, enabling them to push the boundaries of interactive gaming. Your work will encompass various aspects of the engine, including threading, memory management, physics, and scripting. If you possess a passion for C++ and thrive in high-performance, real-time applications, you will find a welcoming environment within our Game Engine team.Your responsibilities will include:Crafting engine code in C++ for critical sub-systems within the Roblox game engine.Developing systems for data synchronization between server and client, implementing game-aware data streaming, and optimizing resource usage to ensure seamless gameplay across diverse devices.Contributing to every application developed by Roblox, from mobile clients to cloud-based servers.Your qualifications include:A minimum of 4 years of experience working on intricate challenges in extensive C++ codebases.Proficiency with system-level pointers, templates, and raw memory blocks.A strong understanding of game engine architecture or a desire to learn.Experience in building reliable, functioning systems.A curiosity and commitment to staying updated with technological advancements.

At Roblox, our platform serves millions of users daily, providing a space for exploration, creativity, gameplay, learning, and social connection through immersive 3D experiences crafted by our global community of developers and creators.We are dedicated to constructing innovative tools and platforms that enable our community to manifest their imaginative visions. Our goal is to revolutionize how individuals connect globally, regardless of their geographical location or device. Join us in our mission to unite a billion individuals with positivity and respect, as we seek exceptional talent to help realize this vision.A career at Roblox means influencing the future of human interaction by tackling unique technical challenges on a grand scale and contributing to the creation of safer, more respectful shared experiences for all.Every day, numerous configuration changes are made by service owners across Roblox. This crucial function supports millions of players worldwide as they engage with Roblox for play, learning, work, and socializing. Become a part of the Engineering Efficiency - Configuration team at Roblox and play a vital role in enhancing our development experience. As a Senior Software Engineer, your contributions will significantly transform our development processes and facilitate global expansion through advanced technology.Your ResponsibilitiesUnify and Integrate Systems: Seamlessly merge various high-performance frontends and backends into a cohesive, scalable, and secure next-gen configuration system capable of handling millions of requests per second. Integrate configuration management into the CI/CD pipeline effortlessly.Accelerate Configuration Management with AI: Implement AI Agents to enable smooth configuration upgrades, management, and automation.Ensure Safety and Reliability: Develop robust systems to automate configuration changes, minimizing errors and guaranteeing safe modifications at scale.Enhance and Support: Take ownership of existing configuration systems, provide on-call support as needed, and proactively introduce new features and fixes to improve stability and performance.Improve Runtime Configurations: Create and enforce language-specific libraries and standardized processes to optimize runtime configurations across our platform, promoting consistency and efficiency.

Join Roblox, where millions engage daily in exploring, creating, playing, learning, and connecting through immersive 3D digital experiences crafted by our global community.At Roblox, we provide the tools and platform that empower our community to manifest their imaginative experiences. Our aim is to redefine how people connect from anywhere in the world on any device. We are on a mission to unite a billion individuals with positivity and respect, and we are seeking exceptional talent to help us achieve this goal.A career at Roblox offers you the opportunity to influence the future of human interaction, tackle unique technical challenges at scale, and contribute to creating safer, more respectful shared experiences for everyone.As a Senior Software Engineer on our Systems team, you will play a pivotal role in developing the foundational components of Roblox. The software you create will empower our expansive community of over 2 million developers to innovate within interactive gaming. Your contributions will affect every aspect of our engine, including threading, memory management, physics, and scripting. If you have a passion for C++ software development and high-performance real-time applications, you will thrive within our growing Game Engine team.

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.