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Juliette Pretot

Creative, ambitious and enterprising software engineer. I primarily focus on modern JavaScript, more specifically React, its ecosystem and Node.js.


  • JavaScript, GraphQL, Node.js, React
  • Functional Programming
  • Web Performance Optimization
  • Mentoring
  • Agile Methodology


Frontend Engineer at N26, Jan 2018 - now

Isomorphic ReactJs, GraphQL, & Node.js for an online banking app used by more than one million people.

  • Boosted developer productivity by spearheading a component-based design system
  • Reduced code complexity by engineering simple, standardized abstractions for loading states, animations and color-logic
  • Improved time-to-interactive by one second through component-level code splitting
  • Reduced time-to-first-meaningful-paint by 20% through replacing sprites with improved server-side rendering
  • Doubled the speed of font loading using Unicode-range-splitting and preloading
  • Strong accessibility focus, built 100% screenreader compatible UI
  • Agile & cross-functional, pair programming

Lead Engineer and Co-Founder at Language Academy 2016 - 18

Build-time rendered React, SASS, & Firebase for a language learning platform.

  • Bootstrapped a profitable business as a founder
  • Architected the company’s web workflow
  • Built & designed conversion oriented web pages, achieving a 10% visitor to email-subscriber rate
  • Achieved a 63% faster time-to-interactive compared to competitor’s websites
  • Reduced email automation cost by 82% using open-source software
  • Built a web-based chatbot that evaluated a user’s language level
  • Agile & cross-functional structure

Web Developer & Design Researcher at Clue, 2015 - 2016

JavaScript, HTML, CSS, Python, & Heroku for a health tracking app used by more than five million people.

  • Rebuilt the support website, increasing page views by an average of +20%
  • Built in-app surveys & A/B tests using web technologies
  • Prototyped a chatbot in Python
  • Conducted design research (User interviews, competitor/comparator reviews, A/B tests)
  • Developed and implemented company-wide processes for design research
  • Agile & cross-functional structure


Google Developer Challenge Scholarship: Mobile Web Specialist

  • One of 1000 scholars selected by Google
  • Offline enabled JavaScript apps using service-workers, ES6 & SASS

Law School at Humboldt University Berlin

  • Academic processes, theories & principles of law
  • Studied the intersection of law & technology

High School

  • Fast-tracked curriculum for high-achieving students. Graduated two years younger than the national average

Selected Side Projects