US	1,000,000 groups 150,000,000 members 1,300,000,000 connections Java, Scala, JRuby, Groovy, JavaScript, Python Spring, Grails, Rails, Sinatra, Node.js, Hadoop
BS, MS. or PhD in CS or related OOP, data structures, algorithms, software design Passionate about building the world’s largest professional network	YOU

Applications

We're proud of our distributed Java applications capable of serving billions of page views to over 150 million LinkedIn members across browsers, iPads, iPhones, Android and Blackberry phones. Our engineers are responsible for architecting, designing, developing, and supporting the most visible Internet-scale features and infrastructure at LinkedIn. We work across the entire stack, from the data layer (Oracle, MySQL, Voldemort, Memcached), to the distributed service layer (REST, RPC), all the way to the frontend presentation tier (Spring, Grails, JRuby, Node.js).

Sanjay Dubey	I love working with some of the smartest people in the industry on hard problems. It’s an opportunity to learn new things each day.
Yevgeniy Brikman	I love the monthly Hackdays. Build anything you can dream of.
Sean Dawson	Every Hackday, my coworkers push the bar a little higher. I'm very grateful to be able to work with rock star engineers.
Prachi Gupta	Besides presenting me with exciting new technical challenges each day, LinkedIn offers me unique opportunities to meet with thought leaders and industry influencers through the in-house speaker series and contribute back to silicon valley through volunteering and mentorship programs.

Systems and Infrastructure

We're building the next-generation data, storage and search platform. Help us scale LinkedIn infrastructure to handle massive data growth across the LinkedIn ecosystem as we experience dramatic growth in membership and products. Bring your experience in distributed technologies and algorithms and a strong systems orientation (multi-threading, concurrency, scalability, performance). You should understand frameworks for caching, queuing, and distributed data storage, and be excited to work on cutting edge open-source systems.

Nick Dellamaggiore	LinkedIn beckons the curious engineer with hackdays, internal programming competitions, mountains of data and boundless product possibilities.
Swee Lim	We have an awesome and talented engineering team. We like to innovate and have fun.
Baq Haidri	LinkedIn gives engineers a rare opportunity: help build and scale infrastructure and products with a driven, focused team, while impacting over a hundred million users. Throw in a fun-loving company culture and it doesn't get much better than that!
Tom Quiggle	LinkedIn is developing cutting edge systems to manage social data at scale. The technical challenges are fascinating.

Data Analysis and Machine Learning

LinkedIn is looking for applied research engineers and scientists to work on our on our massive semi-structured text and graph data sets. Build highly scalable, highly performant social graph engines, state-of-the-art full-text search engines, and platforms for applied data analytics. You need experience in data mining, information retrieval and/or machine learning, and a strong systems orientation.

Alexis Pribula	The bottom line is that all of us at LinkedIn help people be more successful in their professional lives, and that rules.
Paul Ogilvie	Our large professional user base makes it possible to build compelling data-driven products that can help enrich their careers.
Lili Wu	I love our tech talks and reading groups. What a great company culture!
Alejandro Crosa	Have an impact on every professional in the world.

Tools

The LinkedIn automation and tools team designs and builds core systems and processes that provide the infrastructure for our professional networking site and applications. With our site experiencing dramatic growth, we are seeking engineers to join our team and contribute to taking LinkedIn to the next level. You will focus on building the monitoring, performance measurement, deployment automation, testing frameworks and internal work flow for development, QA, operations, and release control in a very large scale, high visibility, 7x24 mission-critical production environment.

Dan Sully	LinkedIn's technical challenges drive me to be a better engineer every day.
Haiping Han	I love to hear engineers like our tooling. I am thrilled to do more.
Brian Overstreet	At LinkedIn, no day is ever dull. I'm routinely afforded unbelievable opportunities to work on cutting-edge projects with exceptional colleagues.
Ursula Huang	Whether they are decorating their cubes for the Pimp My Row contest or helping me design a code module, I am continually delighted with the positive attitude and talent shown by everyone at LinkedIn.