マーケティング責任者/Head of Marketing(Langaku)

「英語が苦手だったけれど、初めて楽しく続けられた」 「Langakuのおかげで、共通テストの模試で満点だった」
2022年6月のリリース以来、Langakuは多くのユーザーの「英語学習の常識」を変えてきました。集英社をはじめとする出版社の全面協力のもと、国民的な人気マンガを教材として提供。「勉強＝苦痛」というイメージを払拭し、好きな物語を夢中で追いかけるうちに、自然と英語力が身につく——そんな新しい学習体験を創り出しています。

「Google Play ベスト オブ 2025」自己成長部門 大賞の受賞は、その成果の一つに過ぎません。現在は教育現場への導入も進み、プロダクトは次の成長フェーズに入っています。

一方で、これまでのLangakuはアプリ運営・プロダクトマネジメント・マーケティングを一人が兼務する体制で成長してきました。ここから事業を非連続に伸ばすには、獲得から課金・継続までのファネル全体を一つの数字として捉え、プロダクトとマーケティングを横断して打ち手を設計できる人が必要です。

そこで今回、Langakuのブランド戦略とユーザー獲得をリードするマーケティング責任者を募集します。マンガという強いIPを活かし、広告・ASO・SNS・PR・コンテンツなど複数のチャネルを組み合わせながら、Langakuをより多くの学習者に届けていただきます。獲得数だけでなく、ユーザーがLangakuを好きになり、継続的に利用するまでの体験を、プロダクトチームと連携してつくるポジションです。

“I used to struggle with English, but for the first time, I’ve been able to stick with it and actually enjoy it.” “Thanks to Langaku, I scored a perfect score on my Common Test practice exam.”

Since its release in June 2022, Langaku has transformed the “conventional wisdom” about English learning for many users. With the full cooperation of publishers such as Shueisha, we offer nationally popular manga as learning materials. We’re creating a new learning experience that dispels the notion that “studying equals suffering”—one where users naturally acquire English skills while becoming engrossed in the stories they love.

Winning the Grand Prize in the Self-Improvement category at “Google Play Best of 2025” is just one of the results of this effort. We’re now expanding into educational settings, and the product is entering its next phase of growth.

However, until now, Langaku has grown under a structure where a single person handled app operations, product management, and marketing. To achieve exponential growth from this point forward, we need someone who can view the entire funnel—from acquisition to monetization and retention—as a single metric and design strategies that span both product and marketing.

Therefore, we are now seeking a Head of Marketing to lead Langaku’s brand strategy and user acquisition. Leveraging our strong manga IP, you will combine multiple channels—including advertising, ASO, social media, PR, and content—to bring Langaku to a wider audience of learners. This role involves working closely with the product team to create an experience that goes beyond mere user acquisition, ensuring users develop a fondness for Langaku and continue using it over the long term.

1. Identifying Growth Challenges and Designing Strategies and Tactics
   Identify bottlenecks at each stage—acquisition, onboarding, retention, and monetization—through analysis of user behavior and funnel data.
   Design a KPI tree based on business objectives and establish a monitoring system.
   Translate analysis results into prioritized actions and incorporate them into an execution plan, starting with the highest return on investment.
2. Growth Through Product Improvement
   Collaborate with Product Managers, engineers, and designers to plan and drive initiatives to improve onboarding, optimize monetization pathways, and increase retention rates.
   Drive the full cycle from hypothesis formulation through A/B testing, effectiveness verification, and implementation into the product.
3. In-App Initiatives and CRM
   Plan, execute, and evaluate the effectiveness of in-app campaigns, events, and CRM initiatives such as push notifications and emails.
   Designing communications for each user segment and connecting them to retention, reactivation, and monetization
4. Marketing Investment Decision-Making
   Making investment decisions based on CAC, LTV, retention rate, and monetization rate
   Designing medium- to long-term budget allocations that consider not only direct acquisition efficiency but also the incremental effects of initiatives and brand lift
   Formulating overall strategies for all acquisition channels—including digital advertising and ASO—and directing their execution