Staff Software Engineer - Site Defense

Reddit
United States
Workplace: RemoteFull timeUSD 217,000 - 303,900 annuallyFunction: Software EngineeringExperience: 7+ yearsSkills: ["Communication","Mentoring","Incident response","Operational excellence","Real-time analysis"]

Design and operate high-scale, low-latency defenses that protect Reddit from DDoS, bots, and automated abuse. Own ingress-level security systems across CDN, edge, and internal infrastructure, building real-time detection, scoring, and mitigation at per-request/per-user granularity. Partner with Infrastructure and Security teams to balance performance and user experience, contribute to ML-at-Ingress initiatives, and lead end-to-end service ownership including on-call and incident response.

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FursaFursa
Reddit
Reddit
2 days ago

Staff Software Engineer - Site Defense

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 10 hours agoStatus: Live

Job Summary

Design and operate high-scale, low-latency defenses that protect Reddit from DDoS, bots, and automated abuse. Own ingress-level security systems across CDN, edge, and internal infrastructure, building real-time detection, scoring, and mitigation at per-request/per-user granularity. Partner with Infrastructure and Security teams to balance performance and user experience, contribute to ML-at-Ingress initiatives, and lead end-to-end service ownership including on-call and incident response.
Location: United States
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key 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 with Infrastructure, Security, and internal Safety teams to balance security, performance, and user experience.
  • •Own services end-to-end (design, implementation, on-call, and operational excellence) and participate in incident response and post-incident analysis.

Pay and Benefits

Salary: USD 217,000 - 303,900 annually
Equity and Bonus:Equity
Perks:Health InsuranceDentalVision401kParental Leave

Key Requirements

  • •7+ years building and operating high-throughput, low-latency production distributed systems.
  • •Software development experience in one or more general-purpose languages: Python, Go, Rust, Java, or C++.
  • •Experience with DDoS mitigation, WAFs, bot management, or abuse prevention systems.
  • •Strong networking fundamentals, including HTTP, TLS, TCP/IP, proxies, CDNs, and load balancing.
  • •Excellent communication skills to collaborate with service-oriented teams across the company.
Experience:7+ yearsDistributed systemsNetworkingSecurityMachine learning
Skills:CommunicationMentoringIncident responseOperational excellenceReal-time analysis
Languages:English
Tech Stack:PythonGoRustJavaC++HTTPTLSTCP/IPProxiesCDNsLoad balancingReCaptchaDatadomeTurnstileFingerprintJSThumbmarkJSMachine learningReal-time inference

Company Brief

Reddit
Operates Reddit, a large online community and discussion platform where users submit content, comment, and vote across topic-based communities (subreddits); monetizes via advertising, premium subscriptions, and awards.
Industry: Digital Media
Company Size: Enterprise (1,001+ employees)
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: San Francisco, United States
Founded: 2005
WebsiteLinkedIn