UI/Front End Engineer

Castlight Health · San Francisco, CA

Health & Well-Being
Posted 1 month ago

Machine Learning
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Do you want to help change the way people experience their health care? Castlight’s mission is to improve our users’ journey through the health care system. As part of that mission, we're looking for a top caliber engineer with experience in building SaaS Applications at Internet scale, including some front-end experience for a greenfield project to develop and drive a personalization platform for Castlight’s applications.

This team has already developed a platform that drives significant value for our users and the business, and now we’re embarking on something even bigger.

This team leverages a rich set of health claims, demographics, biometrics, and wearables data. You’ll collaborate with data scientists, machine learning engineers and backend engineers to deliver personalized features to our application.

Work will primarily spend your time in our UI stack implementing components in our user-facing applications using Angular 2, and instrumenting experiments in these applications to deliver features to the end-users and to monitor performance (e.g. A/B tests).

Ability to contribute to the development of APIs for integrating with the platform using Java, J2EE, and the Spring framework is a huge plus. Some of your time will be spent working with the team to maintain our existing platform, but most will be toward this greenfield project.


  • 2+ years of front end development experience using JavaScript with either Angular 2 or React 
  • 2+ years of experience using HTML / HTML5 & CSS / CSS3
  • Familiarity working in an Agile environment
  • BS in Computer Science or other technical degree such as Physics, Mathematics or Engineering 


  • Experience developing APIs and contributing to the development of RESTful services 
  • Experience with SQL / RDBMS 
  • Mobile development / Ionic experience


Our Values

One team. On a mission. Making things happen.

Diversity and Inclusion

The Castlight culture values and celebrates different backgrounds, perspectives, and points of view. We believe our diversity helps drive creativity and innovation. We strive to make everyone feel included, valued, and engaged; enable them to do their best work; and build their careers here at Castlight. That is why diversity and inclusion are more than just words to us. Rather, they are a commitment to a culture where employees feel respected and empowered to share their ideas and deliver the best results.

Learn more about our continuing commitment to diversity and inclusion.

About Castlight

Castlight is on a mission to make it as easy as humanly possible to navigate healthcare and live happier, healthier, more productive lives. Our health navigation platform connects with hundreds of health vendors, benefits resources, and plan designs, giving rise to the world’s first comprehensive app for all health needs. We guide individuals—based on their unique profile—to the best resources available to them, whether they are healthy, chronically ill, or actively seeking medical care. In doing so, we help companies regain control over rising healthcare costs and get more value from their benefits investments. Castlight revolutionized the healthcare sector with the introduction of data-driven price transparency tools in 2008 and the first consumer-grade wellbeing platform in 2012. Today, Castlight serves as the health navigation platform for millions of people and is a trusted partner to many of the largest employers in the world. We are headquartered in San Francisco, and can be found online at www.castlighthealth.com and on the New York Stock Exchange as CSLT.

Castlight Health provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, Castlight Health will provide reasonable accommodations for qualified individuals with disabilities.

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