Senior Frontend Engineer, Forge

Seoul, South Korea · Engineering · AI

Company: Video models turn footage into data that people and agents can find and use.
Role: Build video-AI and agent experiences for Playground and Jockey App.

What you will do

We rewrote the responsibilities and qualifications in plain language instead of copying the original posting.

Build intuitive model exploration and AI-agent interfaces.
Implement conversations, streaming responses, progress/results and loading, error and retry states.
Design frontend structures for identity, organizations, billing, usage and complex state/data.
Shape flows with product/design and API/event interfaces with backend and AI teams.
Improve reusable components, shared patterns, tests, performance and accessibility.

5+ years in frontend development, leading production web-app design, launch and operation.
Strong React/TypeScript and architecture/data-flow experience with Next.js, React Query or comparable tools.
Complex asynchronous UI state, loading, error and retry experience. Hybrid in Seoul; eligible for overseas travel; three-month probation at 100% salary.
Component design, state, tests and performance improvements for quality and maintainability.
Prioritization and technical tradeoffs amid changing requirements with product, design and backend colleagues.
Business-level English technical discussion and writing across disciplines and locations.

Responsive CSS frameworks such as Tailwind/design systems, Figma and in-house design collaboration.
Unit testing with Jest/React Testing Library, REST/API design and Mock Service Worker.
Enterprise products, SDLC, CI/CD, build, caching and optimization.
Video streaming, video search or related services.

Read the employer’s original job description

A former Korea GM at a global company reads it and tells you what to improve for this role. It uses 1 credit.

Checked 2026-10-17

TwelveLabsSenior Frontend Engineer, ForgeStart a mock application