Reddit is a community of communities. It’s built on shared interests passion and trust and is home to the most open and authentic conversations on the internet. Every day Reddit users submit vote and comment on the topics they care most about. With 100000+ active communities and approximately 126 million daily active unique visitors Reddit is one of the internet’s largest sources of information. For more information visit www.redditinc.com Reddit's Transport and Site Defense teams build and operate foundational infrastructure behind one of the largest sites in the world. These teams own how requests enter Reddit how services discover and talk to each other how traffic moves across clusters and clouds and how Reddit protects itself from DDoS attacks scrapers bots and other undesired traffic. We are looking for an experienced Engineering Manager to lead and grow the Site Defense teams. This is a high-impact role for a manager who can guide senior engineers make strong technical and organizational tradeoffs and help Reddit scale critical traffic and defense platforms while keeping the site available. How You'll Have Impact Complete Reddit's migration from Fastly to Cloudflare including high-traffic properties such as reddit.com media endpoints Ads endpoints e.reddit.com/gql-fed devvit.reddit.com and long-tail CDN traffic. Make Portal Transporter the predominant service discovery platform for Reddit moving toward broad gRPC/xDS adoption and reducing fragmented service discovery. Migrate high-volume Thrift traffic to gRPC through TGRPC while preserving reliability customer trust and migration velocity. Reduce data transfer and cross-cluster networking costs through smarter routing service discovery and infrastructure standardization. Expand Site Defense coverage across post-CDN traffic including TAC RLS TRS Recaptcha edge challenges device attestation IP reputation and bot context. Deliver the Site Defense Platform and ML-at-ingress direction in a way that improves defense effectiveness while controlling false positives and preserving user experience. Operate merged Transport and Site Defense on-call responsibilities while protecting team focus improving runbooks cross-training engineers and clarifying ownership boundaries with Site Experience SRE. Maintain high availability and low latency while performing large migrations on systems that sit directly in Reddit's request path. What you'll do Lead hire onboard and develop a high-caliber team of infrastructure engineers across Transport and Site Defense. Partner with senior ICs to define technical strategy for global traffic edge/CDN service discovery gRPC datapath rate limiting site defense and bot detection infrastructure. Drive multi-quarter execution on high-risk platform migrations including CDN migration inter-cluster load balancer adoption Thrift to GRPC migration and Site Defense Platform expansion. Establish clear priority frameworks that balance KTLO roadmap commitments incidents business-critical migrations and cross-functional asks. Build and maintain a healthy operational model for critical infrastructure including on-call quality SLOs dashboards incident response postmortems and proactive maintenance. Collaborate deeply with partner teams across Consumer Ads Media Platform Graph QL SEO Web Platform Info Sec Compute ML Platform Storage DevEx Safety/Trust CIAM and Site Experience SRE. Coach engineers through technical design stakeholder alignment project planning execution risk communication and career growth. Create a culture of metrics-driven quality operational transparency crisp ownership and pragmatic technical ambition. Who You Might Be 3+ years of people-management experience for software infrastructure platform SRE or security/abuse-defense engineering teams. 5+ years of experience building or operating internet-scale infrastructure distributed systems networking cloud platforms service mesh edge/CDN or reliability-critical systems. Strong technical judgment in areas such as Kubernetes Envoy Contour xDS gRPC CDNs DNS load balancing cloud networking rate limiting service discovery traffic routing and observability. Experience managing operationally critical services including on-call incident response reliability review SLOs and production-change safety. Proven ability to lead large migrations or platform adoption efforts across many customer teams. Ability to partner with senior/staff engineers and translate between technical detail user impact team capacity and executive-level risk. Strong communication prioritization and stakeholder-management skills. High empathy for engineers and internal customers with the judgment to protect team focus while still serving the business. Nice To Have Experience with edge security bot defense DDoS mitigation WAF traffic reputation Recaptcha/challenge systems abuse detection or fraud/risk infrastructure. Experience with Cloudflare Fastly Akamai or similar CDN/edge providers. Experience with ML-enabled platform systems online scoring request annotation signal pipelines or false-positive-sensitive enforcement systems. Experience with cost optimization for large-scale cloud networking or service-to-service infrastructure. Hands-on software engineering experience in Go Rust Python Java C++ or similar production 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 #LI-Remote Pay Transparency This job posting may span more than one career level. In addition to base salary this job is eligible to receive equity in the form of restricted stock units and depending on the position offered it may also be eligible to receive a commission. Additionally Reddit offers a wide range of benefits to U.S.-based employees including medical dental and vision insurance 401(k) program with employer match generous time off for vacation and parental leave. To learn more please visit https//www.redditinc.com/careers/ To provide greater transparency to candidates we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function level and country location benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including skills depth of work experience and relevant licenses/credentials and may vary from the amounts listed below. The base salary range for this position is $217000 $303900 USD In select roles and locations the interviews will be recorded transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording transcription and summarization prior to any scheduled interviews. During the interview we will collect the following categories of personal information Identifiers Professional and Employment-Related Information Sensory Information (audio/video recording) and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information including our retention of it please refer to our Candidate Privacy Policy for Potential Employees and Contractors Reddit is proud to be an equal opportunity employer and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If due to a disability you need an accommodation during the interview process please let your recruiter know.