Senior Software Engineer - Safety Experience (San Mateo)

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 Safety Applications?As we scale, the complexity and volume of safety threats have grown exponentially, making Trust and Safety the single most critical engineering problem we face. The platform’s ability to achieve its mission hinges entirely on the foundational tooling we build.We are not just responding to incidents; We are building the scalable operating system for all of Roblox’s Trust & Safety strategy. As a Senior Engineer on the Safety Application pod within the Safety Experience, you will be instrumental in developing our in-house safety applications. This role emphasizes building intuitive, scalable, and AI-agentic-powered tooling for daily Roblox safety acts. If you are passionate about solving complex, high-impact problems in an adversarial landscape, this is the team for you. You will report to the Engineering Manager of the Safety Application Team.You Will:Architect and Lead End-to-End Systems: Assume ultimate technical ownership for the lifecycle of complex, full-stack systems within Safety labeling and Investigative tooling. Drive the technical strategy from specification through implementation, rollout, and iteration, actively shaping and influencing the pod's broader roadmap.Spearhead Cross-Functional Alignment: Act as the primary technical anchor for Operations, Product Managers, and partner safety pods. Take the lead in resolving highly ambiguous workflows, translating complex business pain points into scalable, extensible technical architectures while proactively managing tech debt and long-term platformization goals.Pioneer Architectural Vision: Define and drive the architectural direction for the next generation of safety applications. Lead the integration of advanced AI methodologies (including LLMs and agentic workflows) to build highly effective, scalable moderation solutions.Design and Scale Core Primitives: Architect, build, and evangelize shared moderation primitives (e.g., Compliance infrastructure, Quality Assurance, Traffic Routing, workforce management, and agentic AI labeling frameworks). Empower external integrator teams by creating frictionless, self-serve onboarding pathways for new safety surfaces.Drive Multi-Quarter Initiatives: Lead large-scale, cross-organizational technical initiatives. Navigate complex dependencies, resolve cross-team blockers, and align disparate groups to ensure the widespread adoption and operational success of our core safety applications.Act as a Technical Multiplier: Elevate the engineering standards of the team. Take responsibility not just for your own project execution, but for mentoring engineers, driving design reviews, and establishing best practices across the safety platform ecosystem.Partner with Leadership: Partner closely with engineering leadership to define technical priorities, reporting directly to the Manager of Safety Applications.You Have:7+ years of experience in software development.Distributed Systems Architecture: Proven ability to design and implement robust, high-throughput microservices (handling thousands of requests per second) while maintaining a strict focus on system safety and security. Safety-Driven Mindset: A strong commitment to designing, implementing, and maintaining systems that prioritize user safety, data integrity, and compliance with safety policies.Equivalent experience or a BS in Computer Science, Applied Math, Physics, Engineering, Statistics, or another technical field.Curious to learn new technologies and systematically grow your skills.You Are:Experienced (7+ years): You have extensive experience as a full-stack engineer, proficient in both front-end and back-end development, working on complex, production-grade systems end-to-end.Analytical & Data-Driven: You possess a strong ability to instrument, collect, and analyze user interaction data (e.g., A/B testing, usage metrics) to inform design decisions and continuously maximize user impact and product performance.Versatile & Adaptable: You are proficient across multiple programming languages, frameworks, and technologies (e.g., modern React, #Golang, Python, relational/NoSQL databases, cloud platforms) and can quickly shift focus and master new skills to meet project demands.Team-Player & Technical Leader: You are a collaborative team member who actively mentors peers, drives technical excellence, and takes ownership of leading and delivering key features and projects across team boundaries.AI native: You are eager to define and build AI-centric solutions, incorporating modern machine learning and agentic AI capabilities directly into the core user experience and system architecture.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 USDRoles 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.