At Criteo we face some of the most challenging, but interesting problems in the IT industry. We work at a scale of speed, performance and complexity that few others in the industry can compete with. Our data is not big it’s absolutely HUGE. We have about 40 petabytes in our Hadoop storage (more than 30 TB extra per day), we take less than 10ms to respond to an ad request and we deliver billions of ads per day.

To help us solve these challenges, Criteo is looking for the best of the best in terms of engineering talent within our cool and geeky environment!

SREs develop, maintain and operate software that automates the traditional roles of the system administrator.

Challenges of this role

• Build systems that make the best decision in a very short time, half a million times per second. Across three continents and 15 datacenters, 24/7.
• Store and process tens of TB of data, in one hour, using over a thousand nodes on our Hadoop cluster. And constantly get better at it while keeping the lights on.
• Get stuff done. A problem partially solved today is better than a perfect solution next year. Have an idea during the night? Code it in the morning, push it at noon, test it in the afternoon and deploy it the next morning.
• High stakes, high rewards: 1% increase in performance may yield millions for the company. But if a single bug goes through, the Internet goes down (we’re only half joking, our work reaches 95% of the internet  population).
• Develop open source projects. Because we are working at the forefront of technology, we are dealing with problems that few have faced. We’re big users of open source, and we’d like to give back to the community.
• Work with engineering leadership to develop long-term roadmaps and architectures to scale our infrastructure and improve our SLA.

Strong candidates qualifications

• Reliability – You apply rigorous thinking when designing systems or software. You focus on resilience, monitoring and high availability.
• Scalability – You like working with problems involving huge amounts of servers with requirements for high throughput and millisecond response times.
• Flexibility - It’s not really important what technology you’ve used before (Ruby, Python, Java, Scala…) – we’re looking for people who can adapt very quickly and with an open mind. Our engineers will choose and use the best tool for the job.
• Curiosity – You love tinkering with Linux, Networks and Distributed Systems , work on personal projects, are curious.
• Passionate - You are a problem solver, a fixer, and a creative technologist. We believe engineering is a talent and a passion, not just a skill.
• Team Oriented - You need to be a great team worker and a great communicator.

Bonus

• Experience at Internet scale, using the Hadoop stack, Kafka, Mesos,Cassandra etc.
• Experience with tools such as Chef, Puppet or Ansible
• Good knowledge of advertising technology

We use: CentOS, Windows, Chef, Graphite, Cassandra, Couchbase, ElasticSearch, Memcached, Hadoop, Spark, Kafka, Jenkins, Consul, Mesos, IIS, HAProxy, Maven, MSBuild, Gerrit, Kerberos, Active Directory, OpenAM, Nagios, Centreon, Riemann, IPMI…

Criteo R&D Culture

• Empowerment –We believe in hiring the best engineers in the industry and then letting them get on with what they do best – designing, coding and releasing state of the art software.
• Mobility –In our Voyager program our engineers get to pick which team they want to work on for 2-4 weeks, boosting collaboration, networking and maybe even leading to switching teams.
• Agility- We work in a fast pace environment where we build and release stuff frequently to deliver value soon and adapt to changes quickly.
• Variety –We have many ways to get your code to production including our Hackathon, 10% projects, Voyager and more.
• Multicultural –We have engineers from all over the world for you to interact and exchange ideas with.

Our culture keeps evolving, and you will be expected to contribute actively with new ideas to complement and enhance the existing programs that include frictionless internal mobility, 10% time, mentoring, technical talks, hackathons, conferences, etc.

Are you up to the challenge?

• About Criteo [CRTO]

Criteo (CRTO), the leader in commerce marketing, is building the highest performing and open commerce marketing ecosystem to drive profits and sales for retailers and brands. 2,700 Criteo team members partner with 16,000 customers and thousands of publishers across the globe to deliver performance at scale by connecting shoppers to the things they need and love. Designed for commerce, Criteo Commerce Marketing Ecosystem sees over 50 billion in annual commerce sales data. For more information, please visit www.criteo.com.

The 600+ engineers @Criteo are building the next generation digital advertising technologies that allow us to manage billions of ad impressions every day. We're working in a very fast-paced release cycle and are adding new capabilities weekly and even daily.

A few figures:

15 datacenters (9 with computing capacity + 6 dedicated to network connectivity) across US, EU, APAC

More than 24K servers, running a mix of Linux and Windows

One of the largest Hadoop clusters in Europe with close to 108PB of storage and 32.000 cores

150B HTTP requests and close to 4B unique banners displayed per day

Close to 3M HTTP requests per second handled during peak times

130Gbps of bandwidth, half of it through peering exchanges

We recognize that engineering culture is key for building a world-class engineering organization. Our core values are getting stuff done, collaboration and respect, code quality, striving for excellence, and having fun at what we do.

Do you want to know more about life in the R&D?

Youtube:  R&D Criteo @ US / R&D Criteo @ Global   

Our blog: http://www.criteolabs.com

Twitter: @CriteoEng
Also on Glassdoor

Criteo is an Equal Opportunity Employer          
 

#LI-CD1

 To all recruitment agencies: Criteo does not accept agency resumes. Please do not forward resumes to our jobs alias, Criteo employees or any other company location. Criteo is not responsible for any fees related to unsolicited resumes.