• Rethinking Path Validation: Pt. 2

    March 16, 2016

    BGP, or the Border Gateway Protocol, is a widely-used protocol that allows very large networks, such as the Internet, to be able to scale. While BGP was originally developed for Internet routing, now it is used in some large institutional networks as well. This two-part post will discuss one proposed model for improving BGP security, based on a talk given by LinkedIn Network Architect Russ White at NANOG 66. The first part explained how BGP works, described the shortcomings of...

  • Making Your Feed More Relevant – Part 2: Relevance models and features

    March 15, 2016

    This is a follow up post to Making Your Feed More Relevantthat provided introductory background on the feed system at LinkedIn. In this post we will dive deep into relevance models and features. We use many metrics for assessing the engagement level that the feed provides. Below are a few such metrics: Interactions: number of clicks, likes, comments, follows, joins, connects, re-shares Viral actions: number of likes, comments, and re-shares Shares: number of re-shares Engaged...

  • Puzzling Candidates to Attract Top Talent

    March 11, 2016

    Engineers are passionate about problem solving. I know that from both my personal experience as a software engineer and from the people I work with here at LinkedIn. It’s incredibly refreshing to be surrounded by like-minded problem-solvers who share my curiosity and creativity. One morning, I found myself confronted with a regular expressions crossword that MIT had published as part of their Mystery Hunt in 2013. I spent so many hours working on the puzzle that when I finally...

  • Together We’re Better: 255 Lean In CS&E Circles created in 2015

    March 10, 2016

    “When I first started college, I wasn’t a confident student," recalled Tessa Hurr, a sophomore at Columbia University, who attended this year's Grace...

  • The Competitive Advantage of Craftsmanship, Voldemort's Hadoop Usage and Other ...

    March 9, 2016

    LinkedIn Engineers are asking big questions and sharing their personal answers. From apprentice mentorship to open source citizenship to software...

  • Hiring Relevance Science Engineers at LinkedIn

    March 7, 2016

    I get asked a lot of questions by my friends about relevance science and engineering at LinkedIn. Why has relevance science become so important in the...