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 and proactively detect, remove, and prevent problematic content and behavior, and we make Roblox accounts secure and free from compromise. We also keep the platform compliant for changing regulations and growth markets. We cover a broad area of the tech spectrum, including machine learning, experimentation, automation, highly scalable distributed backend systems, detection workflows, and AI-powered text filters. Aligned and partnering with product teams, we use this tool belt 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 CRITICAL HARMS?

As a Principal ML Engineer on Critical Harms, you’ll build systems to identify and address some of the highest-risk and most critical problems we face, including rare events with sparse data such as predatory behavior, child endangerment, extremism, fraud. Safety and Civility is Roblox's #1 priority, and our mission is to protect our community.

You Will:

• Build systems to detect and address problematic behavior on Roblox. You will work on building and serving ML models to detect unsafe behavior, content and communication at scale.
• Define new investigation tool and lead generation model to help our investigation team, keep up to date with new threat on the platform
• Help define the team's roadmap and long-term strategy towards keeping content and features on Roblox safe.
• Shape how the next generation of internet users interacts safely in the metaverse

You Have:

• 8+ years of experience in software development
• 5+ years of experience building and shipping products to production.
• 5+ years of experience identifying and driving solutions to difficult problems that span multiple teams and require deep technical expertise.
• 5+ years of demonstrated ability developing systems at scale.
• Proven experience shipping ML models in production.
• 5+ years experience using big data query/processing languages and tools such as SQL, Hive, Spark and Airflow
• Graduate degree or equivalent experience in Computer Science, Applied Math, Physics, Engineering, Statistics, or other technical field is a plus

You Are:

• A Technical Leader: You have initiated and facilitated challenging technical solutions. Your technical expertise influences product direction. You nurture a culture of technical excellence.
• Versatile: You're a generalist 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.

Roles that are based in our San Mateo, CA Headquarters are in-office Tuesday, Wednesday, and Thursday, with optional in-office on Monday and Friday (unless otherwise noted).

You’ll Love: 

• Industry-leading compensation package
• Excellent medical, dental, and vision coverage
• A rewarding 401k program
• Flexible vacation policy (varies by exemption status)
• Roflex - Flexible and supportive work policy 
• Roblox Admin badge for your avatar
• At Roblox HQ: 
• Free catered lunches five times a week and several fully stocked kitchens with unlimited snacks
• Onsite fitness center and fitness program credit
• Annual CalTrain Go Pass

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 for all candidates during the interview process.