About Company
DeNA Co., Ltd. is a leading Japanese internet company focused on developing and operating a wide range of mobile and online services. Since its establishment in 1999, DeNA has been at the forefront of innovation in mobile entertainment, e-commerce, sports, AI, and healthcare. Known for creating hugely popular mobile games like *Mobage* titles and *Pokémon Masters EX*, DeNA also manages professional sports teams, operates various entertainment platforms, and invests in cutting-edge AI and social healthcare initiatives. We believe in “Delight and Impact” – creating joy and making a positive impact on the world through technology. Our culture fosters creativity, collaboration, and a passion for pushing boundaries, providing an environment where engineers can truly thrive and see their work come to life in the hands of millions globally. Join DeNA to be part of a dynamic team dedicated to shaping the future of mobile experiences.
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Job Description
Are you a passionate Mobile App Developer looking to make a significant impact on global audiences? DeNA Co., Ltd. is seeking a talented and experienced Mobile App Developer to join our innovative team in Tokyo. In this pivotal role, you will be responsible for the full lifecycle of mobile application development, from conceptualization and design to deployment and ongoing maintenance. You’ll work on exciting projects that span our diverse portfolio, which could include developing engaging new features for our top-tier mobile games, optimizing user experiences for our entertainment platforms, or contributing to our next-generation AI and healthcare applications. This position demands a strong understanding of both front-end user experience and back-end integration, ensuring our applications are not only visually appealing and intuitive but also robust, performant, and secure. You will collaborate closely with product managers, UI/UX designers, quality assurance engineers, and other developers in an agile environment. We encourage our developers to take ownership, experiment with new technologies, and contribute to architectural decisions that will shape our future products. You will have the opportunity to work with modern development stacks, apply best practices in mobile security, and continuously learn and grow your skills within a supportive and dynamic team. If you are driven by innovation, passionate about creating seamless mobile experiences, and eager to contribute to products that delight millions, we invite you to explore this opportunity at DeNA. Your work will directly influence user engagement, drive product success, and help us continue to deliver “Delight and Impact” to users worldwide. We value clean code, efficient solutions, and a proactive approach to problem-solving.
Key Responsibilities
- Design, develop, test, and deploy high-quality, scalable mobile applications for iOS and/or Android platforms.
- Collaborate with product owners, designers, and backend engineers to define, design, and ship new features.
- Ensure the performance, quality, and responsiveness of applications.
- Identify and correct bottlenecks, fix bugs, and improve application performance.
- Maintain code quality, organization, and automation.
- Conduct code reviews to ensure code quality and adherence to best practices.
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
- Stay up-to-date with the latest mobile development trends, tools, and best practices.
- Participate in agile development processes, including sprint planning, daily stand-ups, and retrospectives.
Required Skills
- Proficiency in Swift/Objective-C for iOS development or Kotlin/Java for Android development.
- Strong understanding of mobile UI/UX principles, patterns, and best practices.
- Experience with RESTful APIs, third-party libraries, and cloud messaging.
- Familiarity with version control systems (e.g., Git).
- Solid understanding of the full mobile development life cycle.
- Ability to write clean, maintainable, and well-documented code.
- Excellent problem-solving and debugging skills.
- Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
Preferred Qualifications
- Experience with cross-platform frameworks (e.g., React Native, Flutter, Xamarin).
- Familiarity with CI/CD pipelines for mobile applications.
- Experience with game development or entertainment applications.
- Knowledge of modern architectural patterns (e.g., MVVM, MVI, Clean Architecture).
- Experience with performance optimization and memory management for mobile devices.
- Understanding of mobile security best practices.
- Experience with Unit and UI testing frameworks.
- Business-level Japanese language proficiency (N2 or higher) is a plus, though not strictly required.
- Experience with cloud platforms such as AWS, GCP, or Azure.
Perks & Benefits
- Competitive salary and performance-based bonuses.
- Comprehensive social insurance (health, pension, employment, workers' accident compensation).
- Commuting allowance.
- Regular health check-ups.
- Employee stock option program.
- Company-sponsored events and team-building activities.
- Generous paid time off, including annual leave, sick leave, and special holidays.
- Professional development opportunities, including workshops, conferences, and online courses.
- Modern office environment in a prime Tokyo location with excellent facilities.
- Subsidized gym memberships and wellness programs.
- Visa sponsorship and relocation support for international candidates (if applicable).
How to Apply
Interested candidates are encouraged to apply by clicking on the application link below. Please submit your resume and a cover letter outlining your relevant experience and why you are a great fit for DeNA Co., Ltd.
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