Hi, I'm Joon Park, a Fullstack Software Engineer with solid experience in end-to-end product development across web, iOS, and Android platforms. I've had the opportunity to lead projects from concept to launch in the App Store, rebuild complex user interfaces, and optimize app performance using modern JavaScript frameworks and AWS. I enjoy working with cross-functional teams, engaging in user research, and solving real customer problems. Currently, I'm focused on building AI agents and integrating Playwright tests into development cycles. I also have experience scaling apps and mentoring junior developers, and I am passionate about leveraging technology to deliver impactful digital products. When I’m not coding, I enjoy exploring Web3 technologies and playing soccer.…

Joon Park

Hi, I'm Joon Park, a Fullstack Software Engineer with solid experience in end-to-end product development across web, iOS, and Android platforms. I've had the opportunity to lead projects from concept to launch in the App Store, rebuild complex user interfaces, and optimize app performance using modern JavaScript frameworks and AWS. I enjoy working with cross-functional teams, engaging in user research, and solving real customer problems. Currently, I'm focused on building AI agents and integrating Playwright tests into development cycles. I also have experience scaling apps and mentoring junior developers, and I am passionate about leveraging technology to deliver impactful digital products. When I’m not coding, I enjoy exploring Web3 technologies and playing soccer.…

Available to hire

Hi, I’m Joon Park, a Fullstack Software Engineer with solid experience in end-to-end product development across web, iOS, and Android platforms. I’ve had the opportunity to lead projects from concept to launch in the App Store, rebuild complex user interfaces, and optimize app performance using modern JavaScript frameworks and AWS. I enjoy working with cross-functional teams, engaging in user research, and solving real customer problems.

Currently, I’m focused on building AI agents and integrating Playwright tests into development cycles. I also have experience scaling apps and mentoring junior developers, and I am passionate about leveraging technology to deliver impactful digital products. When I’m not coding, I enjoy exploring Web3 technologies and playing soccer.

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Skills

Experience Level

JavaScript
Expert
Node.js
Expert
AWS
Expert
GitHub
Expert
Web Design
Intermediate
TypeScript
Intermediate
Swift
Intermediate
React Native
Intermediate
React JS
Intermediate
iOS
Intermediate
HTML5
Intermediate
CSS
Intermediate
Java
Intermediate
Python
Intermediate
Rust
Intermediate
Socket.IO
Intermediate
Figma
Intermediate
C++
Intermediate
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Language

English
Fluent
Korean
Fluent

Work Experience

Founding Engineer at Cuemill
January 1, 2023 - Present
Spearheaded full development lifecycle for the "Loop by Cuemill" app across iOS, Android, and Web using Capacitor and Vanilla JS/Node.js. Refactored microservice-based backend APIs to improve data fetching efficiency across distributed services. Reduced user onboarding drop-off by designing a step-by-step wizard UX with a single-click entry point. Conducted friction logging and user interviews; led localization and launch strategy for the Korean market. Mentored junior developers and led cross-border team collaboration between Canada and Korea. Built an internal QR code analytics platform with manual translation support and automated mailing list integration using AWS Lambda, reducing reliance on third-party tools and saving over $1K annually. Managed full release management and bug triage, and deployed the app to App Store and Play Store.
Co-Founder / Fullstack Dev at Solana Ecosystem
November 30, 2022 - July 9, 2025
Engineered NFT minting site with custom whitelisting features using Candy Machine v1 that generated over $1M in revenue. Built NFT upgrade tools using Next.js and WebGL. Developed NFT marketplace and launched a $200K+ IDO using Solana smart contracts written in Rust. Led end-to-end execution from architecture to funding. Built a decentralized social platform with SHDW Drive for backend storage, enabling DAO-based content governance for open idea exchange.
IOS Developer at TD Bank
November 30, 2021 - July 9, 2025
Contributed to core TD iOS app enhancements using Swift and C++. Improved accessibility and UI components across high-traffic user flows.
Founding Engineer at Cuemill
January 1, 2023 - Present
Led the full development lifecycle for the 'Loop by Cuemill' app across iOS, Android, and Web using Capacitor and Vanilla JS/Node.js. Refactored backend microservice APIs to improve data fetching efficiency. Reduced user onboarding drop-off by designing user-friendly UX with a step-by-step wizard and single-click entry. Conducted friction logging and user interviews, led localization and launch strategy for Korean market, mentored junior developers, and managed cross-border collaboration between teams in Canada and Korea. Built an internal QR code analytics platform with AWS Lambda that reduced reliance on third-party tools and saved over $1K annually. Managed full release lifecycle including deployment to App Store and Play Store and bug triage.
Co-Founder / Fullstack Dev at Solana Ecosystem
November 30, 2022 - July 9, 2025
Engineered an NFT minting site with custom whitelisting features that generated over $1M revenue and built NFT upgrade tools with Next.js and WebGL. Developed NFT marketplace and launched a $200K+ IDO leveraging Solana smart contracts written in Rust. Built a decentralized social platform with SHDW Drive backend storage, enabling DAO-based content governance for open idea exchange. Managed end-to-end execution from architecture to funding in projects related to blockchain and Web3 ecosystems.
iOS Developer at TD Bank
November 30, 2021 - July 9, 2025
Contributed to core TD iOS app enhancements using Swift and C++. Improved accessibility and user interface components across high-traffic user flows, ensuring better usability and performance of the banking mobile app.

Education

Honors Bachelor of Science at University of Toronto
September 1, 2016 - June 30, 2020
Honors Bachelor of Science at University of Toronto
September 1, 2016 - June 30, 2020

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Gaming, Media & Entertainment
    paper Cuemill - Built iOS and Android app to the play store and app store

    📱 Cuemill – Founding Fullstack Engineer
    Jan 2023 – Present

    As the founding engineer at Cuemill, I led the end-to-end development of Loop by Cuemill, a cross-platform mobile and web application that helps users discover and participate in local, real-time activities.

    💡 Key Contributions:
    Spearheaded fullstack development of the app from zero to production using Vanilla JS, Node.js, Capacitor, and custom-built UI components.

    Architected scalable backend APIs and optimized cross-service data fetching to support dynamic event feeds, chat, and notifications.

    Designed and implemented a smooth onboarding flow, increasing activation by reducing friction through a one-click entry UX.

    Developed advanced real-time features including WebRTC video calls, live chat, and animated feedback (confetti loaders, activity pulses).

    Led Play Store & App Store deployment, managing release cycles, debugging platform-specific issues (iOS/Android), and ensuring GDPR-compliant data flows.

    Built internal analytics tools with AWS Lambda and mailing list automation, cutting 3rd-party costs by over $1K/year.

    🌐 Published:
    App Store: https://www.twine.net/signin
    Play Store: https://www.twine.net/signin