Good evening β€”

I'm Josie Daw.

Tech LeadFullstack DeveloperCommunity Builder
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About Me

Josie Daw

I'm a British tech lead actively contributing to the growth of South Korea's tech scene, often building impactful products with NextJS, React Native/Expo, and modern cloud stacks. My academic background in History from Cambridge adds a unique lens to problem-solving and product thinking.

I organize major tech events like the annual Seoul Tech Impact hackathon for social good and created Constant Coding - an initiative helping underrepresented groups break into tech. I also helped found The Tech Table and I co-lead Tech Korea Advocates. I'm a top 50 Major League Hacking Hacker (2025), a top 100 Technologist to Watch (2023), and have personally helped dozens of people launch careers in tech.

I'm passionate about using technology for good. I regularly provide pro bono development work for non-profit groups and community organizations - if you're building something that matters but have limited resources, get in touch.

Core Technologies

PHP/CodeIgniter
NextJS
React
React Native
Expo
TypeScript
MySQL
Firebase
TailwindCSS
AWS
Vercel
Redux
Google Cloud

✦ Something Interesting About Me

"I was named a Top 100 Technologist to Watch (2023) by Women Who Code and a Top 50 Major League Hacking Hacker (2025)."

Portfolio

24 projects

Korea Cyber Monitor
Real World

Korea Cyber Monitor

Creator & Solo Dev2026

Korean Cybersecurity Incident Tracker

A real-time tracker displaying time elapsed since the last Korean cybersecurity failure. Features automated incident detection via web scraping and CRON jobs, duplicate prevention using similarity algorithms, email notifications, and an admin interface for managing and publishing incidents.

NextJS & Typescript
TailwindCSS
PostgreSQL
Prisma
Vercel
StoryKorean
Real World

StoryKorean

Creator & Lead Dev2019

Korean Folk Story Collection (Web & Apps)

An interactive platform for Korean language learners to read and learn simplified Korean folk stories with English translations. The apps have over 50,000 downloads and the website has over 125,000 unique users per year.

NextJS & Typescript
React Native (Expo)
Vercel
Listings
Just for Fun
πŸ† Award Winner

Listings

Lead Dev2024

Like Hinge ... but for Housing

The Listing App offers a simplified, yet engaging platform to view and save prospective living spaces. Users are able to set their preferences to preemptively filter homes that may or may not align with their search.

Prizes & Awards

  • 2024 Technica [MLH] Best DEI Hack sponsored by Fidelity
  • 2024 Technica WonderBridge Connecting All Users: Best Accessibility Solution
Typescript
React Native (Expo)
Firebase
Raw Korean
Real World
πŸ† Award Winner

Raw Korean

Co-Founder & CTO2021

Interactive Korean Learning Platform (Web & Apps)

An edtech startup empowering Korean language learners to self-study Korean from anywhere in the world through interactive, mobile-oriented components.

Prizes & Awards

  • 500Startups startup
  • κΈ€λ‘œλ²Œμ°½μ—…μ‚¬κ΄€ν•™κ΅ awardee
  • μ„œμšΈμΊ νΌμŠ€νƒ€μš΄ & μˆ™λͺ…μ—¬μžλŒ€ν•™κ΅μΊ νΌμŠ€νƒ€μš΄ awardee
  • ν•œκ΅­μ—¬μ„±λ²€μ²˜ν˜‘νšŒ awardee
NextJS/React & Redux & React Native (Expo)
TypeScript
PHP
MySQL
AWS S3, RDS, EC2 (more)
Sentry
Easy Peasy QR
Just for Fun

Easy Peasy QR

Creator & Solo Dev2024

Simple QR Code Generator

A simple QR code generator that allows users to create QR codes for URLs, text, and more. Created as a 1-day project to provide free, permanent QR codes for users.

NextJS & Typescript
Vercel
Empower Korea
Real World

Empower Korea

Solo Dev2023

Women's Empowerment Site

A site advertising 'λˆ„κ΅¬λ³΄λ‹€ 일에 μ§„μ‹¬μž…λ‹ˆλ‹€λ§Œ' and the EMPOWER 2023 program in South Korea.

NextJS & Typescript
Vercel
NextUI
Magic Eightball
Just for Fun

Magic Eightball

Creator & Solo Dev2023

Simple Fortune Telling Site

A simple site to test out ThreeJS and NextJS with a magic eightball theme.

NextJS & Typescript
Vercel
ThreeJS
GoingOutdaws
Just for Fun

GoingOutdaws

Creator & Solo Dev2023

Personal Hiking Site

Personal hiking website to practice some MUI and Google features (reCaptcha, etc.)

NextJS
TypeScript
MUI
MySQL
The Tech Table Korea
Real World

The Tech Table Korea

Co-Lead & Solo Dev2026

Women in Tech Community Platform

Platform for The Tech Table, a grassroots volunteer-driven collective of women in tech across Seoul. The site showcases skill development workshops, leadership programmes, and networking events for engineers, founders, designers, and tech professionals.

NextJS & Typescript
TailwindCSS
PostgreSQL
Prisma
React Email
Vercel
Battle of Imjin River Memorial
Real World

Battle of Imjin River Memorial

Solo Dev, Co-Chair, & Technology Advisor2024

War Memorial Site

As Co-Chair and Tech Advisor to the British Korean War Memorial Committee, I rebuilt the original website. I also upgraded the designs and implemented new features, including an interactive digital tour of the battlefield integrated with physical QR code signs.

NextJS & Typescript
Vercel
KakaoMap & GoogleMaps
Korea Britain Society
Real World

Korea Britain Society

Solo Dev2025

Non-Profit Organization Site

A site for the Korea Britain Society, a non-profit organization that promotes cultural exchange between Korea and Britain. The site includes a blog for current and past events, and an admin portal. The site is available in English or Korean for static content.

NextJS & Typescript
Vercel
Firebase
Seoul Tech Impact
Real World

Seoul Tech Impact

Organizer & Lead Dev2023

Hackathon Site & Dashboard

A comprehensive site for Seoul Tech Impact hackathon (a hackathon for social good held annually in South Korea). The site includes user profiles, application processing (with automated emails) and an admin dashboard for managing hackathon participants.

NextJS & Typescript
Vercel
Firebase
TailwindCSS
Safe Haven Korea
Real World

Safe Haven Korea

Creator & Solo Dev2023

Mental Health Support Site

A site providing anonymous resources and support for individuals in South Korea.

NextJS & Typescript
Vercel
Firebase
TailwindCSS
Red Collar Rescue
Real World

Red Collar Rescue

Solo Dev2023

South Korean Dog Rescue

A mobile-friendly website to help the public learn more about Red Collar Rescue and their mission to rescue dogs in South Korea. The site also includes a comprehensive admin dashboard for managing dogs, applications, and users.

NextJS & TypeScript
Firebase
TailwindCSS
μ°Ύμ•„λ³΄κ°œ - Follow My Dog
Just for Fun
πŸ† Award Winner

μ°Ύμ•„λ³΄κ°œ - Follow My Dog

Creator & Solo Dev2023

Worry-Free Dog Tracking

Highly accurate real-time location tracking for pets using Korean maps.

Prizes & Awards

  • 2023 FoundersLive Seoul - Second Place
React Native & Expo
Firebase
Maps API (Kakao, Google, Naver)
Wailuku Walking Tour
Just for Fun
πŸ† Award Winner

Wailuku Walking Tour

Lead Dev2022

App Pretotype

Prize-winning hackathon project designed and developed within 48 hours, designed to support community building in Wailuku, Hawaii.

Prizes & Awards

  • 2022 Technica - Best Travel/Transportation Hack
NextJS
Firebase
Google Maps
TailwindCSS
Be the Key
Real World

Be the Key

Solo Dev (& Book Editor)2026

Book Website

Official website for 'Be the Key: Ten Korean Women on Careers, Culture, and Identity' - a collection of ten personal essays by Korean women whose professional journeys span journalism, technology, recruitment, sustainability, automobile, pharmaceuticals, and finance.

NextJS & Typescript
TailwindCSS
Framer Motion
Vercel
Operation Lemontree
Just for Fun

Operation Lemontree

Creator & Solo Dev2025

Open-Source Production-Lite React Native App

Operation Lemontree is a fully open-source app that connects people in a community to share items they no longer need. Users can upload items they want to give away, browse items that are available, and start conversations about items they are interested in. This project was designed to showcase different features of a production-lite Expo app. It is encouraged to be used as a learning tool for developers who are new to React Native and Expo.

Typescript
React Native (Expo)
Firebase
Supabase
Push Notifications
Moodlets
Just for Fun
πŸ† Award Winner

Moodlets

Creator & Solo Dev2023

Mood Tracking App

Prize-winning hackathon project created for the Women Who Code Hackathon for Social Good 2023, designed to help users track their moods and needs with a game-like UI. This app was created with the purpose of improving mental and physical health of individuals and encouraging more empathy from those around them.

Prizes & Awards

  • 2023 Women Who Code Hackathon for Social Good - First Prize
  • 2023 Women Who Code Hackathon for Social Good - Best Mobile Development Project
  • 2023 Women Who Code Hackathon for Social Good - Best Solo Project
React Native & Expo
Typescript
Firebase
No Trace OCR
Just for Fun

No Trace OCR

Creator & Solo Dev2024

Privacy Focused OCR Tool

A simple OCR tool that allows users to extract text from images and PDF files without storing any data. Created as a short 5-day project to test out Mantine and Google Cloud Vision.

NextJS & Typescript
Vercel
Mantine
Google Cloud Vision
Tech Korea Advocates
Real World

Tech Korea Advocates

Co-Lead & Solo Dev2024

Tech Community Site

Providing a platform to connect tech enthusiasts in Korea with an additional admin dashboard.

NextJS & Typescript
Vercel
Firebase
TailwindCSS
Constant Coding
Real World

Constant Coding

Creator & Solo Dev2022

Helping Underrepresented Groups Get Into Tech

This site hosts Constant Coding events from EventBrite, coding tutorials for beginners, as well as providing a registration system for the email mailing list (connected to MailChimp).

NextJS
Firebase
TailwindCSS
EventBrite API
MailChimp API
TechJobsKorea
Just for Fun

TechJobsKorea

Creator & Solo Dev2022

Korean Job Searching Site

Simple site to help people find tech jobs in Korea, created to test out Firebase and TailwindCSS.

NextJS
Firebase
TailwindCSS
Vercel
Klose
Just for Fun
πŸ† Award Winner

Klose

Lead Dev2021

App Pretotype

Prize-winning hackathon project designed and developed within 48 hours, aimed at improving communication with loved ones.

Prizes & Awards

  • 2021 Technica - Best Hack for Influencing Human Behavior @ Home
React Native & Expo
PHP
MySQL
Netlify