Software Dev Engineer, JP Manga

Ready to shape how fans in Japan discover read and obsess over their next favorite manga Join our JP Manga team in our Tokyo office where we build the digital experiences that connect manga lovers with the content they love across mobile and web.

Were investing heavily in the reading experience for the next generation of manga readers and mobile is at the center of it. That means building rich engagement-driven customer-facing software (discovery reading personalization and more) with the craft and performance bar of an app customers open every day. Were early and moving fast. As a key member of the team youll build the experiences that connect manga lovers with their next obsession.

Were looking for a mobile-focused developer with strong native craft in iOS (Swift) and/or Android (Kotlin) or React Native with solid native fundamentals who brings a genuine passion for delightful user experiences and gets energized seeing their work reach customers.

At Amazon youll work alongside the latest AI and GenAI tools that are increasingly woven into how teams operate: from AI-powered capabilities that accelerate decision-making to Generative AI that helps you focus on work that truly matters. Youll have opportunities and resources to develop AI fluency at your own pace with continuous learning built into the culture.

Key job responsibilities
As an SDE on our team you will:

- Design build and ship customer-facing features for our mobile app including discovery surfaces the personal library search and browse and the reading experience.
- Write high-quality well-tested code with performance reliability and maintainability in mind especially for experiences customers open every day.
- Use AI-powered development tools effectively across your day-to-day work including code generation test authoring review debugging and documentation. We build with modern AI-assisted tooling.
- Contribute to the evolution of the apps architecture identifying friction points and proposing improvements.
- Partner with backend engineers to integrate with our services and data flows.
- Collaborate with cross-functional geographically diverse teams (PM UX backend and partner tech teams) through design delivery and support.
- Help maintain operational excellence: resolving issues fixing bugs improving observability and keeping CI/CD healthy.

A day in the life
In this role you will:

- Write and test production Swift and/or Kotlin for features that manga fans across Japan use every day.
- Build customer-facing UI with modern frameworks (SwiftUI/UIKit Jetpack Compose or React Native) and make it feel fast and intuitive alongside UX.
- Wire your features to backend services and reading data handling loading empty and offline states with care.
- Use AI-assisted tools to move faster on coding tests review and debugging.
- Take part in design and code reviews sharpening your craft with experienced mobile engineers.
- Help keep things healthy: fix bugs improve observability and keep CI green on the surfaces you work on.

About the team
Our team located in Tokyo is building the next-generation manga experience for Japanese customers. We own key pillars of JP Manga including the surfaces where customers discover read and engage with manga across mobile and web. We balance new-product development with responsible stewardship of production systems that serve readers today and we work backwards from customers to build a reading experience people open out of habit.

- 3 years of non-internship professional software development experience
- 2 years of non-internship design or architecture (design patterns reliability and scaling) of new and existing systems experience
- Experience programming with at least one software programming language
- Hands-on experience with modern mobile UI frameworks (SwiftUI/UIKit Jetpack Compose or React Native) and modern concurrency patterns (Swift Concurrency Combine Coroutines async JS)
- Solid understanding of mobile fundamentals: app lifecycle memory and performance networking persistence and testing
- 3 years of professional experience building mobile applications: native iOS (Swift/Objective-C) or Android (Kotlin/Java) using modern tooling and architectural patterns or production React Native (or comparable cross-platform) experience with working knowledge of the underlying native platforms
- Experience writing and maintaining unit and UI tests and working within a CI/CD pipeline

- 3 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience
- Bachelors degree in computer science or equivalent
- Hands-on experience using AI-assisted development tooling (coding assistants agentic coding workflows) in real production work
- Experience integrating web content (WebView) or REST/real-time/push-based services in a native app
- Performance profiling and optimization experience on mobile devices

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.