Software Engineer
Email | LinkedIn | GitHub

I am a Full-Stack Developer with expertise in Front-End and Back-End development, with hands-on experience in API services, memory management, multi-threading, and object-oriented programming. I quickly adapt to new technologies and excel in collaborating with teams, leveraging my strong communication skills, taking on challenging projects with a focus on innovation and self-direction.

• Back-End: AWS, SQL, Firebase, Google Cloud, Java, Kotlin, Express.js, NoSQL
• Back-End Developer Tools: Git, Docker, IntelliJ, XCode, VSCode, GitHub Actions (CI/CD), Jira, Figma
• Web Front-End: React.js, Next.js, Node.js, JavaScript, TypeScript, HTML/CSS, Tailwind CSS
• Mobile Front-End: Swift, SwiftUI, UIKit, Kotlin, Jetpack Compose, Xcode, Android Studio

Lomi - Open Mind Development (Nov 2021 – May 2024)
Remote, Canada

• Released and maintained native IoT iOS/Android applications along with Back-End services.
• Prioritized tasks and managed timelines to ensure on-schedule project delivery.
• Developed APIs for Back-End systems to ensure reliable data exchange between devices and servers.
• Led and implemented features like MQTT/WebSocket, push notifications, and login, collaborating with AWS services.
• Designed the mobile app architecture by applying SOLID principles and Clean Architecture.
• Managed the entire software development life cycle (SDLC), collaborating with business and UI/UX teams.
• Mentored team members through 1-on-1 sessions and pair programming.
• Conducted detailed code reviews and testing, working closely with QA.
• Contributed to the app's 4.5 out of 5-star rating.

Tech Stack: AWS (Lambda, Cognito, Amplify), Firebase, Node.js, TypeScript, Swift, Kotlin, Python, SQL

DPCode (Mar 2021 – Aug 2021)
British Columbia, Canada

• Developed the core REST API using AWS Lambda for an online education platform.
• Leveraged NoSQL databases for efficient data storage and retrieval.
• Built the front-end of the system using React.js and Next.js with Tailwind CSS for a responsive design.
• Integrated AWS Cognito to implement user authentication, including Single Sign-On (SSO) functionality.
• Led technical interviews and mentored new team members, supporting their onboarding process.
• Participated in Agile practices to ensure smooth collaboration between Front-End and Back-End developers.

Tech Stack: AWS (Lambda, Cognito, DynamoDB, RDS), Next.js, React, Tailwind CSS, Python, NoSQL

Tokyo Metropolitan University (Apr 2014 – Mar 2016)
GPA: 97.5%
Tokyo, Japan

Tokyo Metropolitan University (Apr 2010 – Mar 2014)
GPA: 3.3 (equivalent)
Tokyo, Japan

Volunteer (June 2022 – Current)
Canada

• Taught fundamental computer science concepts to fellow developers.
• Provided instruction on both basic and advanced data structures and algorithms to enhance developers' skills.

Tokyo Metropolitan University (2011 – 2014)
Tokyo, Japan

• Assisted students in understanding computer science concepts & Object-Oriented Programming (OOP).
• Helped direct approximately 40 failing students, with no known failures.

Japan Broadcasting Corporation (Apr 2016 – June 2020)
Tokyo, Japan

• Developed, maintained, and operated interactive data broadcasting systems between TV and users.
• Maintained software programs for managing TV program broadcasts and listings.
• Handled maintenance and updates for broadcast software and hardware servers.
• Prepared reports and manuals on the status, operation, and maintenance of software and hardware equipment.
• Researched, identified, and communicated technical problems, processes, and solutions.

Vancouver Tech Week Hackathon (Sep 2024)

• Won the hackathon out of 18 teams by developing a solution addressing a key challenge in the tech ecosystem.
• Collaborated with engineers, PMs, and designers to design and implement the project within tight deadlines.
• Led breaking down the project epic into technical tasks and developed a functional prototype under time constraints.
• Presented the solution with a slide deck and demo, highlighting technical and design excellence to the judges.

Frog Creator Production (June 2024)
Canada

• Attended as a core speaker at "Frog Conference 2024" with 120+ software developers in Canada.
• Discussed leadership in tech and modern software development practices.
• Explored strategies for building efficient engineering teams and fostering innovation.
• Shared insights on tech career development and effective growth strategies.

Google Cloud Run Platform (Aug 2024 – Current)

• Developed a video hosting platform with a focus on secure and scalable video processing using Google Cloud.
• Implemented features, including video listing, watching, uploading, and transcoding, with user authentication.
• Leveraged Google Cloud Pub/Sub for async communication between the Next.js frontend and video processing service.
• Utilized Docker to containerize and deploy services, ensuring portability and seamless deployment across environments.
• Integrated Firebase Auth for sign-in/sign-out functionality and Firebase Firestore for managing video metadata.
• Designed the Back-End with Express.js and Firebase Functions to handle API requests fetching videos and user data.
• Utilized Google Cloud Storage to store raw and transcoded videos, ensuring optimized video handling and delivery.

• Artificial Intelligence Recommendation Systems
  Yamaguchi, T., Hattori, S., & Takama, Y. (2015). Proposal of personal-value-based item modeling and its application to explanation of recommendation. In 2015 Conference on Technologies and Applications of Artificial Intelligence (TAAI).

• Image/Signal Processing
  Yamaguchi, T., Iwahashi, M., & Kiya, H. (2014). Color image denoising by NL-means filtering with a constraint among color components. Proceedings of the WSEAS International Conference on Applied Computer and Applied Computational Science.