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Mantra

Flutter Engineer (Langaku)

Salary
600万 - 900万
Location
Tokyo
Remote
On-site / hybrid
Visa
Sponsorship available
Language
Japanese: Business Level / English: Business Level
Posted
Mar 5, 2026
Python
AWS
Github
GCP
Django
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Overview

Primary Responsibilities

Designing, developing, operating, testing, and documenting mobile applications using Flutter.

Enhancing productivity and quality through automation of testing and operations.

Collaborating with product managers and designers to design user experiences and features that solve user problems.

Making technical decisions and building/managing development schedules.

Technical Stack:

Frontend: Flutter

Backend: Python

Infrastructure: AWS, GCP

Basic Qualifications

3+ years of experience in developing with Flutter.

Ability to design and develop software with maintainability and performance in mind.

Ability to design and propose improvements for mobile apps considering user experience.

Experience in team development using Git, GitHub, etc.

Preferred Skills

  • Experience in developing BtoC mobile applications.
  • Experience in building and operating infrastructure using AWS.
  • Knowledge and understanding of UI/UX design, and experience in designing.
  • Experience in implementing and operating automated testing for frontend apps.
  • Knowledge and experience with server-side development using Django.
  • The Ideal Candidate
  • Someone accustomed to continuous learning
  • Able to approach problems by formulating and then verifying hypotheses
  • Enjoys communicating with people from different fields and backgrounds
  • Able to take ownership and handle working independently
  • Strong interest in Mantra's focus areas (manga, language, machine learning)

Hiring Process

1

Document screening (resume, detailed career and job history, portfolio)

2

~3 Interviews

3

Final meeting to discuss terms of employment and compensation

Quick Facts

CompanyMantra
LocationTokyo
Salary600万 - 900万
RemoteOn-site / hybrid
VisaAvailable
LanguageJapanese: Business Level / English: Business Level
Interested in this role?

Submit your application for this role at Mantra.

Apply Now