Uneoka Kenta
Saitama
Summary
Dynamic Lead Mobile Developer with over 3 years of experience in designing, developing, and scaling high-quality mobile applications at Passion4Profession Inc. Expertise in React Native and native iOS development (Swift), focusing on creating robust, maintainable, and performance-optimized mobile solutions for production environments. Proven success in managing the complete mobile development lifecycle—from product ideation and architecture design to App Store deployment and long-term maintenance—ensuring alignment between technical execution and business growth objectives. Recognized as a technical leader and mentor, dedicated to fostering code quality, best practices, and collaborative team development while delivering innovative user experiences that drive exceptional ROI.
Overview
9
9
years of professional experience
Work History
Senior Mobile Developer
Passion4Profession Inc
07.2022 - 12.2025
- Led the design and development of cross-platform mobile apps using React Native and native iOS.
- Owned application architecture, ensuring scalability, performance, and maintainability.
- Implemented subscription systems and in-app purchases, integrating Apple App Store workflows.
- Integrated third-party SDKs including Adapty, Firebase, analytics, and push notifications.
- Managed App Store releases, TestFlight builds, provisioning, and certificates.
- Mentored junior developers through code reviews, best practices, and architecture guidance.
- Collaborated with product managers to translate business requirements into technical solutions.
Full Stack Engineer
SparxIT
03.2020 - 05.2022
- Built enterprise-grade full-stack applications using React, Node.js, and Java (Spring Boot) with RESTful and GraphQL APIs.
- Built and optimized Java Spring Boot microservices, enhancing system modularity and maintainability.
- Architected the backend for the HIS website using Django, optimizing UI elements to cut bounce rates by 40%, boost engagement by 30%, and increase inquiries by 15% within three months of launch.
- Developed a real-time video call app using WebRTC for seamless peer-to-peer audio and video communication, with signaling handled via WebSocket protocols.
- Designed and implemented scalable backend services using Django and Flask, integrated with PostgreSQL and Redis.
- Developed mobile applications using Flutter and React Native, integrating with REST and GraphQL APIs to support cross-platform functionality.
- Implemented push notifications, offline support, and location-based services in mobile projects.
- Integrated Plaid API into Laravel backend for seamless financial data synchronization and secure payment processing.
- Developed a web application using Angular.js, TypeScript, Node.js, firebase, and GCP to improve the efficiency of medical clinic operations.
- Optimized backend processes and integrated third-party APIs (Firebase, AWS Cognito, Mailgun, Auth0, Twilio), increasing system efficiency by 30%.
- Built internal tools with TDD practices, increasing test coverage and application reliability.
- Played a key role in transitioning teams to Agile and SCRUM methodologies for faster, iterative delivery.
Frontend Developer
Vinova
02.2017 - 12.2019
- Delivered scalable solutions for 10+ projects spanning real estate, e-commerce, and finance.
- Enhanced system performance by 25%, improving page load speed by 30% through optimized code and design.
- Integrated business requirements with technical expertise, reducing errors and improving team efficiency.
- Designed user-centric interfaces, increasing user engagement and conversion rates.
Education
Bachelor's degree - Information Science
Singapore Institute of Technology
Singapore03.2018
Skills
- HTML markup language expertise
- Cascading Style Sheets
- Skilled in PHP programming
- Proficient in JavaScript
- TypeScript programming expertise
- Nodejs programming
- Experience with React and React Native frameworks
- Experienced in Swift programming
- Firebase integration expertise
- Experience with Adapty
- MySQL database management
- PostgreSQL database management
- Database management with MongoDB
- AWS platform proficiency
- Git repository management
- Performance enhancement techniques
- Proficient in version control systems
- Agile project management
- Continuous delivery
Languages
English B2
Timeline
Senior Mobile Developer
Passion4Profession Inc
07.2022 - 12.2025
Full Stack Engineer
SparxIT
03.2020 - 05.2022
Frontend Developer
Vinova
02.2017 - 12.2019
Bachelor's degree - Information Science
Singapore Institute of Technology