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# Software Engineer - Bot Defense

- **Company:** Roblox
- **Location:** San Mateo, CA, United States
- **Experience:** Expert
- **Salary:** $196,750.0
- **Contract:** Permanent contract
- **Skills:** Webui, Software Engineering, Backend, Information Technology, Roblox, Front End Software Development
- **Published:** July 9, 2026
- **Apply:** https://careers.roblox.com/jobs/8047817?gh_jid=8047817

## About the Role

* 4+ years of experience in software development. Experience as a full-stack engineer, proficient in back-end development, working on complex, production-grade systems end-to-end.
 * 2+ years of experience in front-end development
 * Equivalent experience or a BS in Computer Science, Applied Math, Physics, Engineering, Statistics, or another technical field.
 * 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.
 * Team Oriented: You lift up your peers and find ways to make the team stronger.
 * User Oriented: You always start with the needs of the user, whether they are Roblox users or internal engineers before architecting a solution.

## Description

We are seeking a founding Full-Stack Engineer to define and own the frontend and platform interface for the Bot Defense team at Roblox.

As a full-stack engineer on our team, you will bridge the gap between complex detection models and real-time mitigation, working across the entire stack—from developing high-throughput data processing pipelines and real-time request-level defenses to building intuitive tooling for reviewing and monitoring bot activity. You will have a direct impact on platform health, ensuring fairness for creators and players by staying ahead of evolving threats in a high-stakes, data-driven environment

This isn't just a traditional coding role; it is a platform-building role. If you want to solve complex, high-stakes problems with a team that has already proven its ability to deliver major technical milestones, we want to talk to you.

You will:

 * Be the architect of our platform interface: You won’t be maintaining legacy code; you will be building our GCS (Generic Challenge Configuration) Web UI from scratch. This tool is the gateway for downstream feature teams across Roblox to self-onboard and tune rules independently. You are essentially building the "control center" for bot defense.
 * High-impact engineering at scale: You will own the Device ID integration—a critical signal layer that acts as the un-spoofable cornerstone for our reputation graphs. Your work will directly dictate how we catch sophisticated bots across signup, login, and game-join events.
 * The "Founding" Experience: You will have total autonomy to shape our frontend practices. As the first dedicated full-stack hire on a team of 9 infrastructure and ML experts, you will have unique influence over the team's roadmap, tooling, and technical direction.
 * Visible Results: Your work directly protects the platform’s health. By building custom analytics views and alert groupers, you will be the reason we can identify false positives in real-time and spare legitimate users from unnecessary friction.1
 * Bridge the gap: Translate complex backend detection intelligence into intuitive, high-value interfaces.
 * Build the ecosystem: Transform us from a "service team" into a "Bot Defense-as-a-Service" platform.
 * Solve the toughest problems: Help us solve the "Identity Gap"—the most urgent challenge facing our signup protection today.


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