Expa is hiring a

Senior Infrastructure Engineer

San Francisco, United States

Job Description

Mix is working on the next generation of social discovery tools and we’re seeking a self-directed Senior Backend/Distributed Systems Engineer who is passionate about robust and scalable web applications.  The operations infrastructure team focuses on designing, administering, and maintaining core and backend systems. This role works closely with the development team helping ensure that scalability, performance, and maintainability are inherent in our infrastructure.


  • Plan, design and deploy hardware and software infrastructure
  • Ensure integrity of monitoring, alerting, system maintenance, and capacity planning
  • Communicate regularly with development and support teams regarding system status and implementation schedules
  • Play a key role in ensuring the performance, health, and tuning of various backend distributed systems

Required Qualifications

  • At least 5 years experience with large backend distributed systems
  • Knowledge of relational databases (SQL fundamentals)
  • Deep Experience with monitoring and metrics systems (Nagios, Ganglia or similar)
  • Experience implementing and managing a configuration management system (Chef, Puppet)
  • Solid scripting/programming experience (php, python, perl, shell or similar)
  • Experience in or working knowledge in a high level language (C++, Java or equivalent)
  • Prior work in designing or supporting either high throughput or large volume data processing pipelines/workflows
  • Solid System Administration knowledge / Strong Unix Skills
  • Solid knowledge of Networking Fundamentals
  • Experience supporting a 24x7x365 production environment at scale required
  • Strong communication skills
  • Proven ability to work independently

Desired Qualifications

  • Expertise administering and tuning in any of the following: hadoop, hbase, cassandra, redis, memcache, elasticsearch/lucene/solr.   AKA - You’ve pushed at least one of these technologies to the point of failure or reached its system limits... and then worked up a fix/solution!


Mix offers comprehensive medical, dental, and vision insurance as well as competitive salary and meaningful equity. We offer a 401k savings plan and an unlimited PTO policy.

We are headquartered in the SOMA district of San Francisco, but with many remote employees. We have fully-stocked healthy kitchens and are located conveniently near public transportation.

About Mix

Mix’s mission is to connect the curious with the creative, delivering personalized recommendations one click at a time. Mix will provide a modern and elegant way to discover the best content liked by friends and experts, from across the web to your mobile device. Mix is proud to be an Expa portfolio company and we're looking for talented folks to join our team.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.