Job Description

Founded in 2023 by an entrepreneur from an English education startup and a developer from Seoul National University, ThetaOne is innovating English education based on AI technology. Led by renowned U.S. venture capital firms Strong Ventures and The Ventures, the company successfully secured 1 billion KRW in Seed funding and was selected for the 1.5 billion KRW Deep Tech TIPS support program in Korea. Leveraging an agile culture and outstanding colleagues, ThetaOne is rapidly growing with a focus on the global market by developing world-class educational AI models and Langflix, a video content-based language education service. With Langflix, simply entering the URL of a YouTube video you want generates a learning curriculum tailored to your interests. It provides the industry's only Deep Tech TIPS-based 4-axis shadowing feedback (phoneme, stress, speed, and rhythm) and supports Netflix, YouTube, and short-form videos. Since launching as a paid service in January 2026, we have been growing at a rate of 2x every month and have even ranked 2nd on the App Store Education chart. Ultimately, we aim to become the "TikTok of English learning," enabling users to learn English effectively and enjoyably through video-based learning every day. We are looking for a marketer to join us in Langflix's expansion into Japan. • Managing content upload schedules for official Japanese social media channels and supporting post registration • Organizing social media content materials and proposing marketing campaign plans • Researching social media trends, competitor IPs, and the Japanese English education content market • Managing supporter groups within Japan • Reviewing and improving Japanese UX writing

Qualifications

- Native-level Japanese proficiency (Able to judge content and wording based on local Japanese sensibilities) - Able to communicate smoothly with the team in Korean - Well-versed in Japanese social media and content trends

Preferred

- Interest in or experience with English education or language learning - Experience in managing social media channels or content creation (video, images, copy) - Major in or interest in marketing, media, or business management - Those who wish to gain practical experience in entering the Japanese market or global marketing

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