Software Engineer, Twelve Labs
Frontend
$130-150k
+ Offers Equity
More information about location
AI-enabled video understanding technology
Be an early applicant
AI-enabled video understanding technology
21-100 employees
Be an early applicant
$130-150k
+ Offers Equity
More information about location
21-100 employees
Company mission
To build the best video understanding platform driven by leading perceptual-reasoning research
Role
Who you are
- 3-5 years of experience building production React applications
- Deep expertise in React performance optimization, render cycle management, and complex state handling
- Track record of building smooth, responsive interfaces with real-time updates and complex interactions
- Experience with video players, timeline interfaces, or creative tools
- Obsessive attention to response times, polish, and the details that make products feel professional
- Keen eye for design
Desirable
- Experience with AI-powered products or creative/editing tools
- Familiarity with video workflows (HLS, timeline-based editing, EDL/FCPXML)
- Background in building collaborative features (real-time sync, permissions, commenting)
- Experience optimizing large data sets in the browser (thousands of video clips)
What the job involves
- We're looking for a Frontend Engineer who cares deeply about performance and craft to build video-centric interactive applications that delight and engage users
- You have experience crafting fluid, multi-state, asynchronous experiences with thoughtful microinteractions and animations, and you’re comfortable translating Figma designs and prototypes into production-ready applications with rich behaviors
- Building performant, polished interfaces that allow users to interact with video
- Craft fluid, multi-state, asynchronous experiences
- Translate Figma designs/prototypes into production-ready UIs with rich behaviors
- Ensuring every interaction - from micro-animations to keyboard shortcuts - feels immediate and intentional
Our take
Developing an algorithm that can understand text or images is (relatively) straightforward. However, the challenge escalates when it comes to understanding video, where these modes merge with audio, and context becomes much harder to grasp.
Twelve Labs has developed a machine learning solution that tackles this challenge by making the inner content of videos both indexable for developers and highly searchable for users. This technology could prove immensely valuable, with use cases extending far beyond simple searchability for end users. It could be employed for more accurate monitoring of community guidelines on social media, enterprise knowledge searches, and a deeper understanding of the value of video content.
With recent funding under its belt, Twelve Labs is set for rapid growth. The investment will drive R&D, nearly double its workforce, and advance its video understanding technology. As it expands, Twelve Labs is well-positioned to lead the future of multimodal AI and revolutionize how organizations extract values from video content.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 7 rounds)
Oct 2025
$3m
EARLY VC
Dec 2024
$30m
EARLY VC
Total funding: $110.2m
Company benefits
- Full health, dental, and vision benefits
- Extremely flexible PTO and parental leave policy. Office closed the week of Christmas and New Years
- Remote-flexible, offices in San Francisco and Seoul and coworking stipend
- VISA support (such as H1B and OPT transfer for US employees)
Company HQ
SoMa, San Francisco, CA
Leadership
Jae Lee
(Co-Founder & CEO)After Interning as a Software Engineer at Samsung and Amazon, they joined the Republic of Korea's Cyber Operations Command as a Lead Data Scientist. Co-founded Twelve Labs after this period of military service.
Aiden Lee
(Co-Founder & CTO)Interned at Korea Advanced Institute of Science and Technology (KAIST) as a Deep Learning Researcher. Completed their National Defense duty as an AI & ML Engineer in the Cyber Operations Command.
Sung Jun (SJ) Kim
(Co-Founder)Served for the Ministry of National Defense as a Lead Software Engineer in the Cyber Operations Command. Before this, they were a Cyber Security Research Scientist at Sungkyunkwan University.
Dave Chung
(Co-Founder)Previously a Project Team Lead at the Institute of East and West Studies (IEWS) at Yonsei University, focusing on the planning and development of the Korean Web 3.0 ecosystem (Funded by the Ministry of ICT).
Soyoung Lee
(Co-Founder)Worked in Risk Assurance for PricewaterhouseCoopers in Seoul before co-founding Twelve Labs.
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