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 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 Experience? 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. We are looking for a Principal Software Engineer to join our Safety Experience team within the Trust & Safety organization. In this role, you will revolutionize Roblox users' perception of safety by developing agentic applications and complex technical solutions at scale. You Will: • 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. You Have: • 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. You Are: • A Technical Leader: You have initiated and facilitated challenging technical solutions. Your technical expertise influences product direction. You foster a culture of technical excellence. • Versatile: You're a jack of all trades and you are comfortable with several languages and technologies already; you are adaptable in any situation. You are resourceful, and take a creative and strategic approach to solving hard problems. • Analytical: Excited to investigate large, ambiguous problems, and quantify the problems and the solutions. • User Oriented: You always start with the needs of the user, whether they are Roblox users or internal engineers before architecting a solution. • Team Oriented: You lift up your peers and find ways to make the team stronger. 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.