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Senior Infrastructure Engineer






San Francisco, CA, US


Lumosity is a world-leading brain training program with over 100 million users and almost 6 billion games played. Our mission is to help people improve and understand their mental abilities. Lumosity is bringing modern mindfulness practices to our large audience. We’re integrating the best of traditional teachings, modern science, and engaging design to create compelling experiences that inspire real practice and learning.
You are a curious engineer that thinks about scaling applications infrastructure. You have the ability to quickly learn technology stacks and identify areas to improve the end user experience. We have the majority of our applications on Kubernetes (some still on ECS), and keep a lot of non-application infrastructure (Kafka, data stores, etc) on EC2 managed with Chef. The rest of our current stack is listed at, and we’re constantly looking to build out more to support our user facing, data engineering, and data science teams.


    • Develop and maintain all aspects of operations infrastructure
    • Create next-gen infrastructure supporting external and internal applications
    • Predict scaling problems before they occur
    • Employ preventive measures to maintain high availability servers that service 65 million requests a day
    • Utilize AWS EC2 and Kubernetes


    • 4-6 years experience in site operations
    • Strong software engineering, database, system administration, and infrastructure management skills
    • Managed operations and infrastructure for a large-scale website
    • Familiarity with the following technologies: AWS, Chef/Puppet, deployment of Rails applications, Kubernetes/Docker, Memcached, Redis, Docker, and git
    • Database management in MySQL, and overall Linux knowledge
    • BA/BS in Computer Science


    • A collaborative culture where growth from within is encouraged
    • Regular creative learning sessions, skill shares, forums, guest speakers, and workshops
    • Continuous learning budget for conferences, professional and skill development
    • Competitive benefits (options for individual and/or family medical, dental and vision plans, commuter benefits, parental leave, One Medical membership and much more!)
    • Flexible time off
    • Gym and cell phone reimbursement
    • Catered lunch 4 times a week, fully stocked kitchen & snacks, and dinner when you work late
    • Fun social events such as board game nights, work anniversary celebration, weekly happy hours, and quarterly company-wide events
    • Team lunches and off-sites (past excursions include creative retreats, cooking classes, escape rooms, and terrarium building)
    • We recognize family is important, we host a Bring Your Child to Work Day as well as other kid-friendly offsite events
    • We empower employees to give back to our community and our CSR team hosts volunteer events year round

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