Principal Software Engineer, Game Safety

Every day, tens of millions of people come to Lumen Dynamics 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 Lumen Dynamics, 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 Lumen Dynamics 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 Lumen Dynamics, 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 Lumen Dynamics 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 Lumen Dynamics safe, civil, and inclusive, and we foster positive relationships between people around the world. WHY GAME SAFETY? As a Principal Software Engineer on Game Safety, you’ll work on some of the most challenging problems we face. You will transform our experience safety efforts into a scale-oriented, near-real-time problem, in an adversarial context. This requires an understanding of code, 3D content, player behavior, and more, working at Lumen Dynamics scale (billions of monthly engagement hours). The ideal candidate is creative, flexible across the stack, and proactive in advancing our mission of keeping users safe. Since engineering drives most of the team’s roadmap, we value initiative and problem-solving. You Will: Build and scale distributed systems that power game moderation at Lumen Dynamics, ensuring billions of monthly engagement hours are safe and civil. Operate as a high-agency problem solver: whether the solution requires deep-diving into backend services, scaling ML pipelines, or diving into data, you do what’s needed to ship impactful safety products Develop innovative detection approaches in a rapidly evolving, adversarial landscape, using a data-driven lens to identify new opportunities. Lead through technical excellence: you define the team’s direction by being the first to dive into the hardest problems, earning influence through your execution and mentorship. Partner cross-functionally with Moderation Operations, Product Management, and Data Science to deliver end-to-end products that protect our community. You Have: 6+ years of experience building and shipping high-scale backend systems to production. Experience with machine learning is a plus 6+ years of experience working on multi-person codebases, including open-source or personal projects Passion for delivering products end-to-end, from ideation through implementation, with laser focus on the end goal while being empathetic with cross-functional stakeholders You Are: Resourceful: You're adaptable in any situation and can always find a path forward. 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 Lumen Dynamics users or internal engineers before architecting a solution. Team Oriented: You lift up your peers and find ways to make the team stronger. You are a sought-after mentor. You foster a culture of technical excellence. Mission Driven: You stay laser-focused on the mission and are versatile, creative, and strategic to achieve it. You think long-term, and find ways to deliver short-term value on the way to get there. 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). Lumen Dynamics 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. Lumen Dynamics 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.