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emoji of a pushpinRemote-US (or Washington, DC)emoji of a money bag$150k-$210kemoji of a clockFri Sep 30 2022
emoji of a woman of coloremoji of a man21 people in techemoji of a woman of coloremoji of a woman 13 women in techemoji of a woman of coloremoji of a person of color 5 people of color in tech

CommonLit is a non-profit education organization dedicated to providing high-quality literacy instruction to low-income students and students of color to prepare them for success in college and careers. We operate a free online reading and writing program,, that is used by millions of teachers and students.


About the Role

CommonLit's mission is to improve the educational and economic outcomes of students through better literacy and critical thinking skills. Our application supports millions of students in the United States and around the world with a rigorous, high-interest literacy curriculum in English and Spanish. 

Our small (nine-member) engineering team works in a collaborative, high-trust environment where we ship high-quality software to power CommonLit's curriculum and to assist teachers in assessing their students growth. As a Senior Engineer you'll lead significant technical projects, contribute your own code, review teammates' work, and advance CommonLit's mission. You'll act as a force-multiplier for your teammates' work in addition to your own high-leverage contributions.

Our team is a group of life-long learners. We value sharing new ideas, lifting each other up, and building performant, reliable software that teachers can rely on in the high-stress classroom environment. 

A Day in the Life

As a Senior Engineer your work will include:

  • Writing high-quality Ruby and Typescript code and tests for our Ruby on Rails monolith
  • Reviewing your teammates' work in our code review workflow
  • Researching technical ideas for upcoming projects
  • Mentoring and helping level-up less experienced engineers on the team
  • Deploying and operating our application in production


  • 5-8+ years of web development experience with some of that time spent on a Ruby on Rails production application
  • Experience working with a modern JavaScript framework (React, Vue, Angular, etc.)
  • Ability to work comfortably in SQL (we use PostgreSQL and Redshift)
  • Experience dealing with performance and scaling issues
  • You live in the United States and have work authorization
  • You have a commitment to improving equity of opportunity for students of color

As an equal opportunity employer, CommonLit values having a diverse workforce and continuously strives to maintain an inclusive and equitable workplace. We encourage people with a diverse range of backgrounds to apply. We do not discriminate against any person based upon their race, traits historically associated with race, religion, color, national origin, sex, pregnancy or related medical conditions, parental status, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, or any other legally protected characteristics. If you are a qualified applicant requiring assistance or an accommodation to complete any step of the application process due to a disability, you may contact us at


Interviewing is a demand on your time. Here's what you can expect from our interview process:

  • A call with a senior engineer or CTO
  • A 45-60 minute technical interview on over Zoom with two engineers (we rotate the interviewers and change members of the pair to ensure consistent leveling of expectations)
  • Finalists will be invited for a ~4-hour final interview including pairing with CommonLit engineers, an architecture discussion, and meeting our Product team


CommonLit is an organization dedicated to improving equity among students by providing free resources to teachers of low-income students and students of color. CommonLit is women-founded and a majority of our technical team is made up of women.

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