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Sr. Web Engineer






San Francisco, CA, US


Lumosity is a brain training program with over 85 million users and 4.4 billion games played. In addition to improving Lumosity, we’re also creating new products that combine science, engineering and design to help people form better sleep habits, practice mindfulness, and more.
You are a curious and ambitious full stack engineer that wants to iterate quickly on a large scale application. You have the ability to quickly learn technology stacks and identify areas to improve the end user’s experience.


    • To work collaboratively with talented people
    • An environment where we often pair, test everything and ship multiple times a day
    • To improve yourself as an engineer
    • To work on the business logic of a system that serves 65 million requests daily


    • Write clean, well tested, full stack code using Ruby on Rails
    • Build systems that are simple and scale well
    • Proactively identify areas for improvement in the software and products


    • Worked on a high-performance, consumer-facing web site
    • Comprehensive computer-science fundamentals
    • The ability to work across the software stack
    • BA/BS in Computer Science or related field
    • Command of your favorite object-oriented programming language: Ruby, Python, Java, Objective-C, C++, etc.
    • Battle-worn MySQL knowledge
    • Javascript experience


    • 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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