Frontend Engineer
Posted 8d agoBe an early applicant
The constraint that defines this job
Our median learner is on a four-year-old Android phone with 3GB of RAM and a data pack they are careful with. Every kilobyte and every re-render is a real cost to a real student. If you have ever wanted an engineering problem where performance work is obviously worth doing rather than a nice-to-have, this is it.
What you will build
The lesson player: video, transcript, inline quizzes and progress sync, all of which must survive the connection dropping in the middle of a chapter. Alongside it, the practice-test experience, which has to feel instant even when a student answers forty questions in six minutes.
You will work with two other frontend engineers, a designer and the content team. Content sits in the same reviews as engineering, so you will hear directly when something you built confuses a fifteen-year-old.
What we look for
Two to five years of React, an instinct for semantic HTML and accessible markup, and real curiosity about what happens between a tap and a paint. You do not need prior EdTech experience. You do need to care that the app works on a bad connection in a small town, because that is who uses it.
Responsibilities
- Build and maintain the lesson player and practice-test experiences
- Keep the initial JavaScript bundle under the agreed budget for every release
- Make offline and flaky-network behaviour a first-class part of every feature
- Test on real low-end Android hardware, not only on a desktop emulator
- Sit in content reviews and translate learner confusion into interface changes
Requirements
- 2-5 years of production frontend work with React
- Strong HTML and CSS, including accessible form and dialog patterns
- Familiarity with Core Web Vitals and how to actually move them
- Experience with a bundler and reading a bundle analysis report
- Comfortable working in a codebase you did not write
Skills
Benefits
- Health insurance with no waiting period
- A test-device library you can borrow from indefinitely
- Hybrid working with two fixed office days
- Paid certification and conference budget
