/about-us/work-with-us lark™ | Work With Us

About Us

lark™ | Work With Us


Join us

We're on a mission to improve lives

At lark, we're changing the game in mobile health and wellness technology. We design wearable sensors and real-time, empathetic coaching that make people healthier and happier. Our mission is to improve lives by combining cutting-edge technology, behavior change science, and human-centered design.

We're a fun, close-knit bunch of Stanford and MIT nerds. We like great design, tough engineering challenges, and moving quickly. We strongly believe in work-life balance, and we thrive in a supportive, creative culture where the best ideas win.

We're always looking for passionate, exceptional people to join our team in Palo Alto, California. If you're excited to help us tackle the biggest, baddest challenges in healthtech, please drop us a line at jobs@lark.com.

Software Engineer

We’re looking for a full-stack engineer to come join our software team. You’ll help build the engine that is interpreting the world’s health sensor data and empowering people to live fitter and happier lives.

This is a role that involves working in many different environments/languages. You should be excited by the opportunity to learn a lot in a short period, or to test your skills across the stack if you’re already a master of everything. :)


  • You’re excited to solve hairy problems and design systems that have never been built before
  • You have experience working with databases, ideally both SQL and NoSQL technologies
  • You’re comfortable in both frontend and backend environments
  • You love shipping code, and are excited to join a fast-moving startup
  • Minimum 1-2 years experience building products through code


  • You have machine learning experience
  • You’ve released a product (personal projects are fine!)


UI/Visual Designer

Excellent interaction design is core to lark's mission and is the driving force behind our products. Help us create beautiful, engaging, and empathetic products that will coach our users to better health.


  • Outstanding portfolio and experience with rapid prototyping
  • 3+ years experience designing user experience on web, iOS, and Android
  • Expert knowledge of industry tools (Photoshop, Illustrator, Balsamiq, etc.)
  • Degree in interaction design, human computer interaction, industrial design, or equivalent preferred


Machine Learning Lead

Our machine learning team implemented a method of converting raw activity data into walking, running, and biking in no time, but activity data is just the tip of the iceberg. Come join us as we implement machine learning throughout every facet of the product to help people come to amazing realizations about themselves.


  • 2+ years experience using machine learning, preferably in a startup environment
  • Expertise in a practical form of machine learning
  • Experience working with the LAMP stack and python (to work with the backend team)
  • Several past projects demonstrating successful use of machine learning for a useful outcome
  • Desire to explore the unexplored and do something different
  • Minimum of Bachelor's degree in Computer Science (or equivalent)


Android Developer

Join our engineering team and lead the development of Android applications that will coach and inspire people to improve their lives.


  • 2+ years experience in Android development and expertise with Android 4.x
  • Experience with HTML5 and Bluetooth development is a plus
  • Startup experience and a desire to move quickly
  • Minimum of Bachelor's degree in Computer Science (or equivalent)


Content Manager / UX Designer

Do you love helping people improve? Are you a very persuasive writer? Lark is looking for someone excited by the challenge of helping people live healthier lives through mobile-app-based coaching. Your role will be a highly creative mix between user interviews, UX design, and creating effective messaging. Your goal will be to create holistic, empathetic coaching based on user data that changes our users' lives for the better.


  • Positive attitude and excitement to learn
  • Startup experience and a desire to move quickly
  • Excellent communication skills
  • Exercise expertise is a plus
  • Minimum of Bachelor's degree 

(When applying, please include examples of work/projects that show experience in persuading users via written word.)


Coaching Expert in Sleep, Diet, Exercise or Behavior Change 

Our company was founded by experts in behavior change and sleep. We've since expanded our product and company to cover all aspects of health. If you're an expert, we'd love to talk!


  • Minimum of a Bachelor's degree and 5+ years of relevant experience
  • Flexibility and agility in implementing your expertise
  • A passion to move quickly and change lives