Software Engineer, JavaScript and React SDKs

  • San Francisco, CA, USA
  • Full-time
  • Department: Engineering

Company Description

Optimizely is the world's leader in customer experience optimization, allowing businesses to dramatically drive up the value of their digital products, commerce and campaigns through its best in class experimentation software platform. By replacing digital guesswork with evidence-based results, Optimizely enables product and marketing professionals to accelerate innovation, lower the risk of new features, and drive up the return on investment from digital by up to 10X. Over 26 of the Fortune 100 companies choose Optimizely to power their global digital experiences. Optimizely’s impressive customer list includes eBay, FOX, IBM, The New York Times and many more global enterprises.

Job Description

Optimizely has recently launched a new Developer focused product called Full Stack to enable Developers and Product teams to experiment and safely release features anywhere in their application stack. The Developer Experience Engineering team builds SDKs and other services and applications for Full Stack that powers hundreds of millions of unique user experiences such as onboarding flows, search algorithms, pricing tests that go beyond A/B testing. Products that we work on include A/B Experimentation, Feature Experiment, and Feature Rollouts (aka Feature Flagging).
This is one of the fastest growing products in Optimizely’s portfolio, and your contribution and impact will help us dominate the market! You will be integral in helping us build and grow the Platform. Our engineers have the opportunity to work on many languages and tech stacks, including JavaScript/Node, React, React Native, Java, Golang, Python, Ruby, and much more! This is a very exciting time to join an early, fast growing product line and help shape its future.

  • You'll be implementing and shipping features on our most used SDK, the JavaScript and React SDKs, which consistently delivers 100M+ experiences daily to our customers' end users.
  • You'll spend time following trends and best practices in the JavaScript ecosystem and incorporate those into our SDKs.
  • You’ll be working with other members of the team on other features and services that greatly impact how developers use our Full Stack product. 
  • You'll also be picking up new skills by working on some of our other 10+ SDKs and the services we build around them.


  • 2 + years of strong development experience with JavaScript, React, and/or Node. 
  • Passion for building creative products for Developers around the world to be successful.
  • Experience with building NPM packages, React Native and Golang or other backend languages are a huge plus!

Additional Information

At Optimizely, we embody inclusion and embrace diversity.   We believe in work/life balance and bringing our true selves to work.  To that end, we offer best-in-class perks and benefits that support our Optinauts along their career journey with us.  Read more about our culture at

Optimizely is an equal opportunity employer and makes employment decisions on the basis of merit.  Optimizely prohibits discrimination based on race, color, religion, sex, sexual identity, gender identity, marital status, veteran status, nationality, citizenship, age, disability, medical condition, pregnancy, or any other unlawful consideration. All your information will be kept confidential according to EEO guidelines.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

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