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Reddit // online content platform
Engineering, Full Time    New York    Posted: Thursday, February 06, 2020
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The front page of the internet," Reddit brings over 430 million people together each month through their common interests, inviting them to share, vote, comment, & create across thousands of communities. Come for the cats, stay for the empathy.

Reddit is poised to rapidly innovate & grow like no other time in its history. This is a unique opportunity to leave your mark on one of the most influential & trafficked corners of the internet.

The Ad Delivery team is one of the core engineering teams in the Ads group. It is responsible for building & maintaining critical components that make up Reddit's ad serving platform. This includes:

  1. Service-oriented architecture responsible for serving a high volume (500+ MM per day) of ads requests under a strict latency SLA of 100 milliseconds per request
  2. Mission critical real-time streaming & batch processing systems used for pacing, billing & analytics
  3. Control System that paces advertising budgets intelligently to ensure optimal ROI for advertisers
  4. Real-time reporting backend system that provides advertisers insights into how their ad campaigns are performing

As a Site Reliability Engineer, youll use your knowledge of operating distributed systems to improve the consistency, reliability, & performance of our growing ecosystem of services. Youll also use your development experience to contribute to the internal Infrastructure Product that all of Reddit Engineering uses to develop, deploy, & operate their services.


  • Collaborate with all Ads Engineering teams to design & develop systems that are resilient & highly performant at tremendous scale
  • Build tools & systems that will help support & scale the operation of Reddits advertising infrastructure & services
  • Draw on your knowledge of distributed systems to identify & fix network, system, & service-level issues
  • Design systems & processes that all Ads engineers will use to manage & deploy software in production
  • Lead efforts to improve observability & performance of the ad serving platform & reduce costs.


  • 4+ years of Software Infrastructure Engineering experience
  • Experience with the development & operation of high-traffic backend systems
  • Production Kubernetes experience
  • Understanding of Docker containers & runtimes
  • A demonstrated ability to debug, fix, & optimize code
  • Troubleshooting skills that span applications, networking (TCP/IP), & systems
  • Strong working knowledge of Linux (or UNIX) & TCP/IP.
  • Excellent communication & collaborative skills


  • Proficiency with Kubernetes, Mesos or DC/OS
  • At least 2 of managing processes built in Golang, Java, Scala, Pytho
  • Experience managing high-scale systems, Ads preferred
  • Experience with alerting & metrics collection via StatsD
  • Experience with managing Kafka
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