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Staff Software Engineer - Site Defense

Reddit· Infrastructure
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Remote$217k - $303.9kFull-timePosted 1mo ago

About the role

Staff Software Engineer to join Reddit’s Site Defense team within the Infrastructure organization. Focus on high-scale, low-latency defenses against DDoS, automated abuse, and large-scale scraping, combining distributed systems, networking, security, and ML-for-ingress.

Responsibilities

  • Design, build, and operate high-scale, low-latency systems that protect Reddit from DDoS attacks, bots, and automated abuse
  • Analyze, 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 granularity
  • Partner closely within Infrastructure and with Security, and internal Safety teams to balance security, performance, and user experience
  • Mentor junior engineers in their professional growth
  • Contribute to the team’s ML-at-Ingress initiatives, including experimenting with models for traffic classification, bot detection, and anomaly detection
  • Own services end-to-end, including design, implementation, on-call, and operational excellence
  • Participate in incident response and post-incident analysis for large-scale network or abuse events

Qualifications

  • 7+ years of experience building and operating high throughput and low latency production distributed systems
  • Software development experience in one or more general purpose programming languages; Python, Go, Rust, Java, C++
  • Excellent communication skills to collaborate with a service-oriented team and company
  • Experience building and maintaining distributed, fault-tolerant distributed systems at scale
  • Experience with networking fundamentals (HTTP, TLS, TCP/IP, proxies, CDNs, load balancing)

Skills

Required:Distributed systemsNetworking fundamentalsProgramming languages

Benefits

  • Comprehensive Healthcare Benefits and Income Replacement Programs
  • 401k with Employer Match
  • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
  • Family Planning Support
  • Gender-Affirming Care
  • Mental Health & Coaching Benefits
  • Flexible Vacation & Paid Volunteer Time Off
  • Generous Paid Parental Leave
Last updated Oct 7, 2026. Interested? Apply on the company site.
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