I'm Haruki Mizuno, a Mobile App Developer with a strong foundation in Full-Stack Engineering and Trading System Development. I began my career building robust web and backend systems using Node.js, AWS, and Firebase, then transitioned into mobile development, where I craft high-performance iOS and Android apps using Swift, Kotlin, and Flutter. I design and develop automated trading platforms that integrate live market data, analytics APIs, and AI-driven assistants to enhance user insights and decision-making. I'm passionate about combining mobile innovation, scalable architecture, and emerging AI technologies to deliver impactful, data-driven applications that perform at scale.

Haruki Mizuno

I'm Haruki Mizuno, a Mobile App Developer with a strong foundation in Full-Stack Engineering and Trading System Development. I began my career building robust web and backend systems using Node.js, AWS, and Firebase, then transitioned into mobile development, where I craft high-performance iOS and Android apps using Swift, Kotlin, and Flutter. I design and develop automated trading platforms that integrate live market data, analytics APIs, and AI-driven assistants to enhance user insights and decision-making. I'm passionate about combining mobile innovation, scalable architecture, and emerging AI technologies to deliver impactful, data-driven applications that perform at scale.

Available to hire

I’m Haruki Mizuno, a Mobile App Developer with a strong foundation in Full-Stack Engineering and Trading System Development. I began my career building robust web and backend systems using Node.js, AWS, and Firebase, then transitioned into mobile development, where I craft high-performance iOS and Android apps using Swift, Kotlin, and Flutter.

I design and develop automated trading platforms that integrate live market data, analytics APIs, and AI-driven assistants to enhance user insights and decision-making. I’m passionate about combining mobile innovation, scalable architecture, and emerging AI technologies to deliver impactful, data-driven applications that perform at scale.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

Japanese
Fluent
English
Fluent

Work Experience

Mobile Software Engineer at Innovatech Dynamics
December 1, 2024 - December 1, 2024
Developed and optimized enterprise-grade mobile applications focused on scalability, reliability, and clean architecture. Built and maintained cross-platform mobile apps using Flutter and React Native. Integrated RESTful and GraphQL APIs for real-time data updates and seamless UX. Collaborated with backend teams to design modular service layers supporting app scalability.
Lead Mobile Developer at NexTech Solutions, Inc.
December 1, 2022 - December 1, 2022
Led the mobile development division, managing app design, architecture, and team workflows while collaborating on backend and trading integrations. Defined mobile architecture and technical strategy for native and hybrid apps. Led a 4-member team (mobile devs, UI/UX, QA) in Agile sprints and code reviews. Oversaw integration of real-time trading APIs and AI-enhanced analytics dashboards. Reduced app development cycles by 30% with CI/CD pipelines and automated testing. Delivered high-performing apps used by thousands of active users and recognized for reliability.
Full Stack Web Developer at Independent Marketing & Sales Projects
May 1, 2023 - May 1, 2023
Delivered 100+ responsive websites for marketing and business campaigns, handling end-to-end design, development, deployment, and optimization. Built SEO-optimized web apps with React, Next.js, and Node.js. Integrated custom CMS and admin dashboards for content management. Enhanced site performance by 40% through optimization and code refactoring. Managed hosting, deployment, and analytics, maintaining long-term client relationships.

Education

Bachelor of Computer Science at Nanzan University
August 1, 2014 - April 1, 2018

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Professional Services, Media & Entertainment