Staff Software Engineer, Site Defense

What you'll do

• Design and operate high-scale, low-latency systems to protect against DDoS attacks, bots, and automated abuse.
• Develop and evolve ingress-level defenses across CDN, edge, and internal infrastructure layers.
• Build systems to detect, score, and mitigate malicious traffic in real time at per-request and per-user levels.
• Contribute to ML-at-Ingress initiatives by experimenting with models for traffic classification and anomaly detection.
• Own services end-to-end, including design, implementation, on-call rotations, and operational excellence.
• Participate in incident response and post-incident analysis for large-scale network or abuse events.
• Mentor junior engineers to support their professional growth and development.

What we're looking for

• 7+ years of experience building and operating high throughput and low latency production distributed systems.
• Proficiency in one or more general purpose programming languages such as Python, Go, Rust, Java, or C++.
• Experience with networking fundamentals including HTTP, TLS, TCP/IP, proxies, CDNs, and load balancing.
• Experience with DDoS mitigation, WAFs, bot management, or abuse prevention systems.
• Ability to design and operate high-scale, low-latency systems for traffic detection and mitigation.
• Strong communication skills to collaborate across service-oriented teams.
• Experience with ML systems in production, specifically for real-time inference or feature pipelines.
• Familiarity with anti-abuse frameworks, bot scores, or browser fingerprinting frameworks.