Principal Software Engineer- Safety

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.

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 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.

Safety is paramount at Roblox, and it shows up in everyday human moments. A rating left on a game. The words a Customer Care agent chooses when replying to a report. Whether a suspended account feels like a fair call or an arbitrary one. How fast someone gets back into an account they thought was gone for good, guided by an agentic Customer Care experience.

Every one of these moments runs through systems we build: our tools, our data pipelines, our audit trails.

• Design and build agentic workflows and technical solutions for both customer facing applications and internal use cases.
• Stay familiar with recent trends in LLMs and develop innovative solutions and features for the chatbot, while optimizing for cost.
• Influence the team's roadmap and long-term strategy in collaboration with product, operations, and other cross functional stakeholders to develop the next generation of safety experience.
• Provide technical leadership, influencing decisions within and beyond the pod
• Mentor junior engineers to strengthen their technical skills and support their professional growth.

• A Bachelor's degree in Computer Science, or a related field, with a minimum of 8 years of hands-on experience. A graduate degree is highly preferred.
• Proven experience developing innovative solutions using LLMs is required.
• Extensive experience with modern programming languages such as C#, Java, Python, or similar, with a strong emphasis on writing efficient, maintainable, and scalable code.
• In-depth knowledge of contemporary software design patterns, including microservice architecture, RESTful APIs, and Remote Procedure Calls (RPC), with a proven track record of building robust and scalable systems.
• Demonstrated ability to develop end-to-end solutions for complex technical challenges, collaborating across multiple teams from conception through to launch.
• Proven experience developing innovative solutions using LLMs is highly desirable.
• Prior experience in machine learning is helpful.

• A Technical Leader: You have initiated and facilitated challenging technical…