Senior Mobile Developer
Remote • Full-time / Part-time • Posted Jan 25, 2026
Software Development
open
Are you passionate about building high-quality mobile applications that deliver exceptional user experiences? iorUp is looking for a Senior Mobile Developer to lead the development of innovative mobile solutions and contribute to the growth of our digital products.
As a remote role, you will collaborate with product managers, designers, backend developers, and fellow engineers to architect, develop, and maintain scalable mobile applications while ensuring performance, reliability, and maintainability.
Job Requirements
- Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field.
- Minimum 5 years of professional experience in mobile application development.
- Minimum 3 years of hands-on experience with Flutter and Dart.
- Strong understanding of mobile application architecture and design patterns.
- Experience integrating RESTful APIs, GraphQL APIs, and third-party services.
- Proficiency with state management solutions such as Riverpod, Provider, Bloc, or similar.
- Experience with Firebase services including Authentication, Firestore, Analytics, and Cloud Messaging.
- Strong understanding of iOS and Android platform guidelines and best practices.
- Experience optimizing application performance and memory usage.
- Knowledge of mobile security best practices and secure coding standards.
- Experience with Git, code reviews, and collaborative development workflows.
- Familiarity with CI/CD pipelines and mobile application deployment processes.
- Strong problem-solving, debugging, and analytical skills.
- Experience mentoring junior developers and providing technical leadership.
- Japanese language proficiency is a plus.
Job Descriptions / Responsibilities
- Design, develop, and maintain high-quality mobile applications using Flutter.
- Lead technical discussions and contribute to architectural decisions.
- Collaborate with product managers, designers, and backend developers to deliver product features.
- Write clean, scalable, maintainable, and well-documented code.
- Optimize application performance, responsiveness, and user experience.
- Review code and mentor junior and mid-level developers.
- Troubleshoot and resolve complex technical issues across multiple platforms.
- Implement automated testing and maintain code quality standards.
- Integrate APIs, payment gateways, and third-party mobile services.
- Manage application releases to Apple App Store and Google Play Store.
- Participate in sprint planning, estimation, and technical roadmap discussions.
- Stay up to date with mobile development trends, tools, and best practices.
- Contribute to continuous improvement of engineering processes and development standards.
Working Conditions
- Working Hours: 9:00 AM - 6:00 PM (1-hour lunch break).
- Working Days: 5 days a week (Weekdays or weekends depending on project requirements).
Contact
- If you're passionate about building impactful mobile applications, leading technical initiatives, and helping teams deliver exceptional products, we'd love to hear from you! Email: contact@iorup.com