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I am a frontend developer with 3 years of experience building ecommerce back-office, ERP, and WMS systems. I have end-to-end experience in setup, launch, CI/CD, design systems, performance optimization, and migrations. As a team lead and tech lead, I’ve driven recruitment, policy development, documentation, and a collaborative development culture. I enjoy onboarding new teammates, conducting code reviews, and building scalable, reusable components.…I am a frontend developer with 3 years of experience building ecommerce back-office, ERP, and WMS systems. I have end-to-end experience in setup, launch, CI/CD, design systems, performance optimization, and migrations. As a team lead and tech lead, I’ve driven recruitment, policy development, documentation, and a collaborative development culture. I enjoy onboarding new teammates, conducting code reviews, and building scalable, reusable components.

Nadan Jo

Front-End Developer, Back-End Developer, Developer, +7

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I am a frontend developer with 3 years of experience building ecommerce back-office, ERP, and WMS systems. I have end-to-end experience in setup, launch, CI/CD, design systems, performance optimization, and migrations. As a team lead and tech lead, I’ve driven recruitment, policy development, documentation, and a collaborative development culture. I enjoy onboarding new teammates, conducting code reviews, and building scalable, reusable components.…I am a frontend developer with 3 years of experience building ecommerce back-office, ERP, and WMS systems. I have end-to-end experience in setup, launch, CI/CD, design systems, performance optimization, and migrations. As a team lead and tech lead, I’ve driven recruitment, policy development, documentation, and a collaborative development culture. I enjoy onboarding new teammates, conducting code reviews, and building scalable, reusable components.

Available to hire

I am a frontend developer with 3 years of experience building ecommerce back-office, ERP, and WMS systems. I have end-to-end experience in setup, launch, CI/CD, design systems, performance optimization, and migrations.

As a team lead and tech lead, I’ve driven recruitment, policy development, documentation, and a collaborative development culture. I enjoy onboarding new teammates, conducting code reviews, and building scalable, reusable components.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Korean

Fluent

English

Advanced

Work Experience

Frontend Developer at TeamFresh

April 1, 2024 - September 26, 2025

Switched to page-level global state management for data retention, improving usability by 40%. Defined project policies (REST API specs, frontend/back-end collaboration, Git branching strategy, package management).

Frontend Developer at TeamFresh

April 1, 2024 - September 26, 2025

Led frontend development for Dawn Market (grocery e-commerce back-office). Built a design system with Storybook, set up CI/CD, reduced communications costs by 40% through UI testing, created component-level test code with React Testing Library and Jest, and delivered an event page view for app menu navigation and coupon downloads. Migrated to MSW for SSR/API-less development, boosting development speed by 30%. Defined core system design: reusable components, modules, permissions, routing, global state, error handling, API flow, and sidebar.

Frontend Developer (WMS project) at TeamFresh

April 1, 2024 - September 26, 2025

WMS project work: switched to page-level global state management for data retention, improving usability by 40%. Defined project policies (REST API specs, frontend/backend collaboration, Git branch strategy, package management).

Frontend Developer at TeamFresh

April 1, 2024 - September 26, 2025

Frontend development for a logistics cold-chain platform. Led frontend architecture, setup and launch, CI/CD, and performance optimization. Built a design system with Storybook and CI/CD, reducing communication costs by 40% through UI testing. Implemented component-level tests with React Testing Library and Jest to catch errors early. Developed event page views (app menu navigation and coupon downloads) and migrated to MSW for API-less development, boosting development speed by 30%.

Frontend Tech Lead at Dawn Market

February 1, 2024 - September 26, 2025

Frontend tech lead for grocery e-commerce back-office. Managed scheduling, task distribution, tech reviews, code reviews, and documentation. Built a design system with Storybook and CI/CD; reduced communication costs by 40% via UI testing. Wrote component-level tests using React Testing Library and Jest. Created event page web view (menu navigation and coupon download). Adopted MSW for API-less development, increasing speed. Led core system design including reusable components, modules, permissions, routing, global state, error handling, API flow, and sidebar.

Frontend Team Lead at TeamFresh

August 1, 2023 - September 26, 2025

Hired 5 members and supported onboarding, code reviews, and pair programming. Established project guidelines and handover policies to reduce costs and risks and support new team members. Replaced coding tests with work-oriented assignments, earning positive candidate feedback. Fostered a development culture through code reviews and study sessions.

Frontend Developer at Yohoyoho

October 1, 2022 - September 26, 2025

Improved download performance for tax invoices and statements by 85%. Established an one-click deployment system and documented CI/CD using Bamboo. Legacy tech migration (TypeScript, TanStack Query, Recoil, React Hook Form, React Table). Modular design at the component level, separating concerns for functionality and UI files.

Frontend Team Lead at Yohoyoho

October 1, 2022 - September 26, 2025

Frontend team lead for an ERP system for truck driver platforms. Improved download performance for tax invoices and statements by 85%. Established one-click deployment and documentation by implementing CI/CD using Bamboo. Migrated legacy tech (TypeScript, TanStack Query, Recoil, React Hook Form, React Table) and designed modular components to separate concerns for functionality and UI.