This position is closed and is no longer accepting applications.

Lead Android Developer

KOMOJU Musashino-Shi, Tokyo March 25 2025
  • 💴 ¥12M ~ ¥14M annually
  • 🏡
    Fully remote
    From Japan
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Senior level
    Unspecified years of experience

About KOMOJU

KOMOJU Musashino-Shi, Tokyo

The leading cross-border payment gateway for Japan. We power payments for companies like video game distribution platform Steam and the popular mobile app TikTok.

Key benefits

  • Developer-centric, inclusive culture
  • International at our core
  • Generous holiday policy

About the position

We are looking for our first Android Developer to help build out KOMOJU’s Point of Sale (POS) application and mobile SDK which implements our platform API for payment processing. As you will be joining a new team in the company you will have the ability to influence coding standards and the frameworks we adopt.

Our ideal candidate has experience working on mobile applications and is eager to learn other languages and frameworks across tech stacks to ship the best mobile experiences. Testing and code quality are also extremely important to our culture, so having a strong knowledge of testing and the different testing types is required.

Responsibilities

  • Develop KOMOJU POS and mobile SDK offerings using Kotlin
  • Collaborate with product managers and other developers to define, design, and ship new features.
  • Work across tech stacks with backend engineers to design and implement features for mobile applications.
  • Flexibility to engage with other programming languages and work on our platform backend as needed.

Requirements

  • Experience with Android SDK and mobile development lifecycle.
  • Familiarity with RESTful APIs to connect mobile applications to back-end services.
  • Strong knowledge of mobile UI/UX principles, patterns, and best practices.
  • Generalist (T-shaped developer), able to jump between multiple areas of our tech stack to get the job done.
  • Ability to work effectively in a collaborative team environment.

Compensation

¥12,000,000 ~ ¥14,000,000 annually.

Hiring Process

  1. 1

    Initial screening call with HR

    To understand candidates’ overall professional background, career aspirations, and to evaluate the fit for the role/ culture.

  2. 2

    Take-home exercise

    It’s opportunity to evaluate candidates’ practical experience and observe that they follow best practices.This includes, but is not limited to, their coding skills, problem-solving abilities, system design capabilities and ability to optimize and maintain code. We normally give the applicant one week to complete it, but we don’t expect it to take more than 2 hours.

  3. 3

    Technical team interview

    This interview serves two purposes: it’s a chance to review the take-home exercise and assess the candidate’s technical abilities, and it also helps evaluate their soft skills, how well they collaborate with stakeholders and team members, manage their work (time management, prioritization, adaptability), and demonstrate a commitment to continuous learning.

  4. 4

    Final interview with leadership

    We’re looking here to assess culture add. We’re not looking for people that just fit the status quo (culture fit), we want candidates who can bring something new and valuable to our culture. While ensuring that they still align with our core values, we want to assess their ability to adapt to recent changes within the organization and to help guide the organization through its next stage of development.

Meet KOMOJU's Developers

Kazunori initially joined KOMOJU as a web application engineer, but by identifying problems he wanted to fix, his role shifted first to VP of Infrastructure, and then VP of Payment Products.

Read their story...

Nicole joined KOMOJU in 2020, and worked her way up to be technical lead of the merchant management team. She shares her journey, how KOMOJU supported her career growth and how the company is adapting to its growing needs.

Read their story...
Photo of Richard Ramsden

Becoming CTO of KOMOJU

with Richard Ramsden

After graduating from university, Richard came to Japan and found a job as a software developer. Eventually he joined KOMOJU, where he rose to the role of CTO.

Read their story...

Nigel was fresh out of college when he joined KOMOJU as a developer. He's now risen to tech lead, where he's helped build out their payment platform while maintaining a healthy work-life balance.

Read their story...

Muhammad Denaw, Senior Site Reliability Engineer at Komoju, talks about his work and shares how Komoju's trust and support propelled him to a promotion.

Read their story...

Head of Customer Engineering Makoto Mizukami describes the unconventional candidates his unique team is looking for.

Read their story...

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