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Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Backend Engineer, you will have the independence, opportunity, and end-to-end responsibility to help us build a critical, complex set of backend systems that support the creators of games and other experiences within our Roblox ecosystem. The Creator Success Team empowers Roblox to be the best development platform for creating 3D social experiences, allowing our creators to publish compelling content within the Roblox ecosystem. This includes services and solutions around the Creator Hub, Developer Forum, and Creator Dashboard. You will create and own mission-critical services in this cross-discipline team within our Roblox ecosystem. As a team, we believe in fast iteration and are biased toward action while keeping the long view. We have numerous exciting projects ahead of us for the years to come, including but not limited to: Build ML-driven services and large scale data pipeline to drive player insights and optimise monetization opportunities for creators Build next generation communication platform providing creators with powerful tools to manage the player community, organize virtual events, and collect player feedback Build a state-of-the-art remote configuration/experiment platform to enable the continued growth of games with the world's largest concurrent user(CCU) You Are: Experienced in industry: An outstanding software engineer with 8+ years of industry experience Experienced with Distributed Systems: You are deeply familiar with and regularly work with concepts like stream processing, data pipeline, queue, RPC, retry strategies, etc Experienced with native code : You have worked on deep and challenging problems in complex networked codebases, with 3+ years of experience in C#, Java, Go, or any other object-oriented programming language Platforms : You can jump with ease between Windows, OS X, Linux, Android, iOS, and other platforms. You understand where platform-specific code is relevant. Responsible: You build systems with proper monitoring, logging, operations, and automated testing in mind. Teamwork: A team player and love collaborating with others to push the boundaries and challenge the status quo You Will: Lead technical decision-making and guide the development team. Lead engineering and development for our services and systems at a massive scale Collaborate with cross-functional and cross-team leaders to push the boundary of what is possible Self-organize and take ownership of projects throughout their full lifecycle. For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $295,250 — $345,040 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. WHY SAFETY? At Roblox, we strive to connect a billion people with optimism and civility, and the Safety organization’s mission is to become the leader in civil immersive online communities. We systematically detect, remove, and prevent problematic accounts, content and behavior, and we make Roblox accounts secure and free from compromise. We cover a broad area of the tech spectrum, including machine learning, classifiers for 3D models, experimentation, automation, detection workflows, and AI-powered text filters. Aligned and partnering with product teams, we use this toolbelt to discover new opportunities, influence and shape the product roadmap and prioritization, build safety products, and measure the impact on our community of users and developers. In doing so, we keep Roblox safe, civil, and inclusive, and we foster positive relationships between people around the world. WHY ALT DEFENSE? Safety and Civility is Roblox’s #1 priority. The Alt Defense pod is at the front lines of this mission, tasked with solving one of the most difficult adversarial problems on the platform: Alternate Account Detection and Prevention. When bad actors are removed from Roblox, they often attempt to return immediately with new identities. Our goal is to stop them in their tracks. As the Technical Lead for this pod, you will architect and build an industry-leading detection system that operates at a massive scale—processing billions of accounts and identifying recidivism within minutes. You will also be supporting additional use cases for alt detection across the company. You will report to the Senior Engineering Manager of the Account Identity Team. You will: Lead the technical vision for alternate account detection platform, moving from reactive measures to proactive, near real-time prevention. Architect high-scale ML systems using Graph Neural Networks (GNNs) and advanced clustering techniques to map relationships across billions of entities. Solve complex ground truth and training data challenges for adversarial usecases Build for latency and scale, ensuring that detection happens within minutes of a bad actor’s attempt to rejoin the platform. Develop innovative adversarial approaches to stay ahead of sophisticated actors who use evolving techniques to mask their identity. Drive the ML roadmap, identifying opportunities to leverage big data and behavioral signals to improve precision and recall in a high-stakes environment. Mentor and up-level a pod of high-performing ML and software engineers, fostering a culture of technical excellence and rapid iteration. You have: MS or PhD degree in Computer Science, Machine Learning, or a related field. 10+ years of industry experience in Applied ML, with a significant focus on anti-abuse, fraud, integrity, or identity. Expertise in Graph Learning: Deep experience with Large-scale GNNs (GraphSAGE, PGB, etc.) and unsupervised/semi-supervised clustering at the scale of billions of nodes. Proven track record of leading complex technical projects from conception to production-level deployment. Experience with high-throughput systems: You understand the nuances of deploying ML models in low-latency environments where "time-to-detect" is a critical KPI. Adversarial mindset: You can think like a bad actor to anticipate how they will circumvent detection and build robust defenses against it. You are: Resourceful: You're adaptable in any situation and can always find a path forward in the face of evolving threats. Analytical: Excited to investigate large, ambiguous datasets to find the "signal in the noise" of billions of accounts. User Oriented: You understand that safety measures must be balanced with a seamless experience for our legitimate community members. Team Oriented: You are a sought-after mentor who lifts up your peers and builds a collaborative, high-performance environment. Mission Oriented: You are laser-focused on keeping Roblox safe and are willing to take bold, strategic risks to achieve a billion-user scale safely. For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $328,610 — $399,420 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. WHY DATA SCIENCE & ANALYTICS? The Data Science & Analytics organization's mission is to increase our speed, frequency and acumen of making decisions at scale by instilling a data-influenced approach to building products. We cover a wide area of the data spectrum including analytical data engineering, product analytics, experimentation, causal inference, statistical modeling and machine learning. Aligned and partnering with product verticals, we use this extensive tool belt to discover new opportunities and unmet use cases, influence and shape the product roadmap and prioritization, build data products and measure impact on our community of players and developers. WHY ENGINE INFRA? Engine Infra team is responsible for the game-server fleet that simulates live experiences — making it efficient, observable, and reliable on Roblox edge infrastructure and regional cloud capacity, from multiplexing and ARM bursting through telemetry, resource allocation, and edge latency. You Will: Define Metrics — Own Engine Infra metrics, telemetry logging, and validation for the RCC fleet and edge compute. Establish KPIs for game-server efficiency, reliability, and player experience — including CPU and memory, heartbeat, occupancy and multiplexing efficiency, crash and OOM rates, runtime error codes, and latency quality (e.g. DataPing vs RakPing) that directly affect creators and players. Transform & Visualize Data for Actionable Insights — Access and process raw RCC and engine telemetry, build analytics pipelines, and deliver clear operating views of the fleet. Turn per-instance, per-game, datacenter, and channel signals into dashboards and decision systems that help Engine Infra pack more players onto fewer cores, allocate CPU and memory correctly, and keep multiplexed and large-server processes healthy. Design Experiments & Apply Causal Inference — Lead channel tests, hardware A/Bs, and causal analyses for multiplexing, ARM64 bursting, regional capacity, and edge latency. Measure trade-offs among efficiency, stability, and quality; separate host, container, engine, content, and release effects; and estimate player-experience impact (including latency-sensitive cohorts, not only global averages) so launches ship on evidence. Drive Cross-Functional Collaboration — Partner with Engine Infra, Game Engine, Networking, Matchmaking, Infrastructure, Product, and TPMs, and with teams such as Creator Analytics and Growth, to debug ambiguous production issues and open new capacity and quality opportunities. Shape the Future of Roblox’s Foundation — Influence how Roblox runs live experiences on owned edge and cloud hardware — a more efficient RCC fleet, better regional capacity, lower edge latency, and a platform that stays interactive as we scale toward larger, denser servers. You Have: Advanced degree in Computer Science, Statistics, Engineering, or a related field with a focus on large-scale system analysis. 4+ years as a Data Scientist, with a proven track record of working on high-volume telemetry, product quality optimization. Expertise in processing massive, noisy datasets (like crash logs or telemetry pings) and building scalable pipelines for reporting. Experience using first-principles reasoning to debug complex, ambiguous system failures that don't always have a clear cause. Experience presenting deep technical results to Engineering leaders and using data storytelling to prioritize work and future investment. Nice to Have: Direct experience with game engines or systems performance Experience in game development or working on real-time interactive systems A background or interest in memory management, OS-level interactions, or network stack optimization. For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $221,380 — $263,670 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The App Test team builds the test automation platform that enables Roblox engineers to deliver reliable, high-quality experiences across the Roblox Universal App. Our systems span test frameworks, execution and orchestration, device-farm infrastructure, debugging tools, dashboards, and the supporting infra that power end-to-end testing across mobile, desktop, console, and VR. As a Senior Software Engineer on the App Test team, you will design, build, and scale tools and services that power the test automation lifecycle. You will work on foundational systems that enable engineers to author, select, execute, debug, maintain, and triage tests efficiently, while helping evolve our platform toward an AI-native testing experience. You will have the opportunity to solve complex engineering problems across distributed systems, cross-platform automation, developer tooling, and AI orchestration. Your work will help teams identify regressions earlier, improve release confidence, and deliver software faster without compromising quality. You will: Build and scale test automation infrastructure: Design, implement, and evolve the frameworks, runners, orchestration services, device-farm integrations, and supporting infrastructure that power reliable end-to-end testing across Roblox's supported platforms Advance the AI-native test lifecycle: Develop intelligent tooling that improves test authoring, selection, execution, maintenance, and failure triage, using AI to reduce manual effort and make testing more accessible and effective Develop test orchestration and intelligence: Build systems that connect test planning, test selection, execution, and failure analysis, enabling more efficient use of test infrastructure and faster feedback to engineers Enable intelligent test selection: Design and implement capabilities that identify the most relevant tests for code changes and releases, balancing test coverage, validation confidence, execution time, and infrastructure cost Shift quality earlier in the development lifecycle: Integrate automated quality checks and actionable test feedback into development and CI/CD workflows to help teams identify and resolve issues earlier Drive projects end to end: Take ownership of technical initiatives from problem definition, design, and implementation through production deployment, adoption, measurement, and continuous improvement Collaborate across engineering: Partner with application, platform, QA, infrastructure, and developer productivity teams to develop scalable solutions that address the needs of engineers across Roblox You have: Software engineering experience: Experience designing, building, testing, and operating production software, with a track record of solving complex engineering problems in large codebases Programming fundamentals: Strong programming skills in C++, Python, Go, or another modern programming language, with an emphasis on writing maintainable, reliable, and well-tested code Ownership and collaboration: Ability to take ownership of projects, work effectively across teams, communicate technical decisions clearly, and deliver solutions that improve the experience of engineers who use your tools Nice to have Experience with cross-platform test automation frameworks such as Appium, Selenium, or comparable tools, including mobile, desktop, or game testing Experience applying LLMs, agents, or other AI techniques to developer tools, including test authoring, intelligent test selection, test maintenance, failure analysis, or automated debugging Experience working with large-scale software development workflows and integrating automated quality checks into the development lifecycle For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $196,750 — $243,290 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Who We Are: Roblox is reimagining the way people come together to connect, create, and express themselves. To support our massive scale, we are powered by thousands of microservices. The Application Networking team connects and secures these services, building ingress gateways, managing the service mesh, and enabling seamless communication across Roblox’s hybrid on-prem and cloud infrastructure. We are executing on Cloud Bursting, a strategic initiative to enable Roblox’s core services to transparently burst from on-prem data centers to the cloud, allowing us to handle historical peak concurrent players and survive regional failures. You will join our Application Gateway team to build the networking infrastructure that makes this possible. You Will: Design, build, and operate Roblox's Envoy-based application gateway fleet — the front door for billions of daily requests — owning L7 routing, authentication, rate limiting, and traffic policy end to end. Own the reliability and scale characteristics of the gateway: capacity and headroom modeling, failure isolation and blast-radius reduction, progressive delivery of config and code changes, and measurable reduction in edge-caused incidents. Partner with the internal networking and service teams to deliver one coherent traffic story from client to service, abstracting cluster and regional boundaries away from application developers. Serve as a primary escalation point for complex edge and gateway issues, debugging across Envoy configuration and internals, xDS control plane behavior, TLS termination, and the underlying network and load-balancing stack. Act as a senior voice on the team, mentoring junior engineers and promoting best practices in testing, deployment, and reliability engineering. You Are: A professional with 3+ years of experience in distributed systems, with strong expertise in networking architecture and technologies (Envoy, Kubernetes). You understand the tradeoffs of sidecar-based microservice architectures at scale. Deeply knowledgeable of L7 networking concepts: routing and request transformation, TLS termination and certificate management, authentication and authorization, rate limiting, and load-balancing. Experienced running Kubernetes in production and familiar with the K8s networking model. Comfortable working with Envoy proxy internals, xDS APIs, and control plane architectures. Excellent at designing large-scale distributed systems that span multiple clusters, regions, and runtime environments. Fluent in Go, C/C++, or Rust. Experienced with on-call rotations and approach infrastructure with a “reliability-first” mindset. For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $196,750 — $243,290 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a senior software engineer on the Cell Platform team at Roblox, you will build systems that Roblox engineers use to create and deploy resources onto Kubernetes. Our engineers deploy their services in a complex, hybrid, multiple-cluster, K8s environment. The Cell Platform manages this complexity for our users, with tools, APIs, K8s controllers, and UX, simplifying infrastructure for our internal customers. You Have: A desire to work on critical, large-scale distributed systems An appreciation of observability and instrumentation and tooling to make your life easier 7+ years of experience as software engineer Bachelor's degree in Computer Science or an equivalent field You will: Build our Roblox-wide control plane using Kubernetes primitives (and plenty of custom resources) Work on the interface of the few hundred person infrastructure organization to the thousands of Roblox engineers Write and review high quality code and tests (largely Golang) Work on a team that cares about inclusivity and shipping For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $243,290 — $295,250 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The Traffic Proxy Services team powers the front line of Roblox — operating the global edge network and high-performance Layer 7 proxies that handle billions of web and API requests daily while defending the platform against large-scale automated attacks. In this role, you'll help pioneer the next generation of our edge infrastructure: replacing legacy proxy configurations with programmable, memory-safe Rust services running on Kubernetes, and building intelligent, automated defense systems. Working alongside principal engineers and key partners across Security, Reliability, and Platform teams, you'll tackle high-stakes systems challenges where efficiency, scale, and uptime are critical. You Are: An experienced systems engineer with 7+ years building and operating backend or infrastructure software, including time owning a tier-0 service in production. Fluent in a systems language. Rust strongly preferred; strong Go experience with the appetite to work in Rust is welcome. Deeply comfortable with networking fundamentals: TCP, TLS, HTTP/1.1 and HTTP/2, QUIC and the internals of at least one production L7 proxy (HAProxy, Envoy, NGINX, Pingora or similar). Able to troubleshoot a live network problem. Familiar with how the kernel and userspace interact, and comfortable tuning the kernel to optimize for efficiency and reliability. Experienced with high-performance packet processing in and around the kernel — kernel-bypass and kernel-path techniques such as eBPF/XDP. Able to independently design, build, and operate systems on Kubernetes end to end, and to reason about node-level behavior when latency and resource isolation matter. Able to write a design doc that survives review by senior stakeholders across several teams, and to disagree productively when it doesn't. Motivated by problems where the blast radius is real and the feedback loop is immediate. Genuinely curious. You pull on the thread until you understand why a system behaves the way it does, and you would rather learn an unfamiliar layer of the stack than route around it. You Will: Design and build high-performance services that sit directly in the request data path, where performance, reliability, and security are of utmost priority. Effectively leverage AI tools to speed up research, development, and troubleshooting while keeping a critical eye Evolve our edge architecture toward something simpler and programmable, migrating policy incrementally with parity testing and exercised rollback. Improve traffic classification and intelligence to detect and mitigate DDoS and abuse traffic. Build feedback loops that automate mitigation and reduce MTTR. Raise the efficiency of the edge Own your work in production as part of the team's on-call rotation, and raise the reliability bar through design, code review, incident review. Collaborate across Networking, Security, Reliability, and Compute to deliver on Infrastructure and company priorities. Be a gatekeeper for a high code quality bar, architectural designs, and pragmatic vs. long-term approaches. Uphold our company vision by putting the Roblox community first and exemplifying our values. For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $243,290 — $295,250 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. About the role We build the isolation layers that contain untrusted and semi-trusted code. You will design, build, and harden process sandboxes across one or more of Linux, macOS, and Windows, the last line of defense when something inside goes wrong. This is a deep systems role for someone who thinks in terms of attack surface, threat models, and the exact boundary between trusted and untrusted. You Will: Design and implement sandboxes using platform primitives: nsjail, seccomp-bpf, namespaces, cgroups, and Landlock on Linux; the Seatbelt (sandbox_init / SBPL) and related mechanisms on macOS; AppContainer, job objects, restricted tokens, and integrity levels on Windows. Define and lock down every communication path in and out of the sandbox: syscalls, IPC, shared memory, file descriptors, sockets, brokers, and minimize what each one exposes. Enumerate and reduce attack surface: kernel syscall surface, broker interfaces, device access, and side channels. Assume the code inside is hostile. Make deliberate engineering tradeoffs between isolation strength, performance, compatibility, and maintainability, and document the reasoning. Write threat models, review designs, and respond to sandbox escapes and hardening findings. You Have: Deep, hands-on knowledge of the OS security model on at least one of Linux, macOS, or Windows, and the sandboxing primitives that platform provides. Strong grasp of attack surface analysis: how sandboxes are escaped and how to shrink the ways in. Fluency in the boundary between sandbox and host (brokers, IPC, syscall filtering, privilege separation) and how to design a minimal, well-audited interface. Systems programming in C, C++, or Rust; comfort at the syscall and kernel-interface level. Sound judgment on tradeoffs: knowing when tighter isolation is worth the cost and when it isn't. A security mindset: you default to least privilege and distrust every input crossing the boundary. Nice to have Experience across more than one of the three platforms. Kernel, hypervisor, or low-level OS internals work. Fuzzing, exploit development, or red-team experience against isolation boundaries. For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $269,170 — $326,060 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.