Joe Knowles

Full-stack React expert, based in Leeds (UK)

With over 9 years of experience, I've built applications that took 3 early stage startups from Seed stage to Series A and beyond.

Looking for full-stack roles using React, with Node or Rails.

Ionic
Android Studio
React
Node.js
Typescript
GPT API
threeJS
Capacitor
Firestore
Cypress
Firebase Auth
Ruby on Rails
PostgresQL
Styled components
Render
Expo
NextJS
React Native
react-three-fiber
AWS
Prompt engineering
EC2
Material UI
Prisma
GraphQL
Apollo
RDS
redux
Tailwind CSS
SASS
Jest
Supabase
Storybook
Ionic
Android Studio
React
Node.js
Typescript
GPT API
threeJS
Capacitor
Firestore
Cypress
Firebase Auth
Ruby on Rails
PostgresQL
Styled components
Render
Expo
NextJS
React Native
react-three-fiber
AWS
Prompt engineering
EC2
Material UI
Prisma
GraphQL
Apollo
RDS
redux
Tailwind CSS
SASS
Jest
Supabase
Storybook

Personal Web Projects

PassTime

Built with React, NextJS, AWS, PostgresQL, EC2, TypeScript, Material UI, Prisma, GraphQL, Apollo, RDS

A time management app, based on some recent research on productivity: if you make a plan for when you're going to do things, you're more likely to spend your time how you want to, than if you just add things to an ever-growing 'to-do' list.


Try at: passti.me

Codebase: GitHub

See 9 other projects

Experience

Polar Analytics team photo
Polar Analytics UK REMOTE (April 2022 - September 2024) Senior Full-stack Developer

React, Node.js, Typescript, GPT API, Prompt engineering

  • Joined as 2nd full-stack engineer
  • Built user facing application taking us from seed stage through series A funding totalling $18 million
  • Built the onboarding flow and billing system that handled an increase in ARR from $100k to $3M in under 3 years
  • Built an AI data report generator powered by ChatGPT
  • Directly supported customers, leading to best-in-class app ratings
View full CV