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Mantra

AI-powered manga translation engine for publishers

Frontend Engineer - Mantra Engine

Frontend EngineeringConfirmed live in the last 24 hours
Full-timeTokyo, Japan¥6M - ¥10M /yr

About the Job

Requirements

  • Strong experience building production web applications with modern JavaScript or TypeScript and a component-based framework such as Vue or React.
  • Ability to design and evolve frontend architecture, including state management, routing, component boundaries, and API integration patterns.
  • Experience improving user experience quality through performance, accessibility, error handling, and maintainability.
  • Experience collaborating cross-functionally to shape specifications and ship iteratively.
  • English proficiency sufficient for basic communication with non-Japanese speakers; spoken fluency is not a priority.

Responsibilities

  • Own the frontend implementation for key Mantra Engine B2B workflows using Vue 3 and TypeScript.
  • Design and evolve maintainable UI architecture, including component boundaries, state and data flow, and routing.
  • Build reusable UI components and patterns that improve delivery speed and consistency.
  • Collaborate with the backend team using Django on API contracts and integration, including error handling and pagination.
  • Work with business and product stakeholders to turn user needs into clear specifications and high-quality user experience.
  • Improve frontend quality in performance, accessibility, reliability, and developer experience.

Desired Qualifications

  • Experience leading engineering teams of several members, such as as an engineering manager or technical lead.
  • Experience designing, operating, and building backend systems and infrastructure for large-scale services.
  • Experience driving agile development processes such as Scrum.

About the Company

Mantra

AI-powered manga translation engine for publishers

Mantra builds AI-powered translation tools for manga and distributes them to publishers and manga platforms. Its main product, the Mantra Engine, processes manga content to produce translations that preserve the original artwork, layout, and narrative context, delivering accurate, culturally appropriate localization. The service is offered on a subscription basis to B2B customers such as publishers and platforms, with additional revenue opportunities from licensing and partnerships. This approach aims to cut the time and cost of traditional translation, making manga more accessible to a global audience while maintaining quality. Mantra differentiates itself by specializing in manga translation, leveraging AI and ML to handle the unique combination of text and artwork, and by actively engaging with industry programs and awards to validate its impact.

Company size
51-200
Company stage
Early VC
Total funding
$7.9M
Headquarters
Tokyo, Japan
Founded
2020

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