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Shigefumi K.

@shigefumi0820

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APP | Game | AI Engine Developer

$35 USD / Hour
Flag of
Japan (4:57 AM)
Joined on January 14, 2025
$35 USD / Hour
? Less than 1 min response time ? 77+ successful Upwork projects, and I earn more than $700k ✅ Top 1% part of Upwork's Expert-vetted program ?️ 13 years of experience in Full-stack, AI, and ML / NLP niches ?️ 6 years of AI agents and LLMs integrations, ai agent and automation development I have built projects used by millions, I've led large teams, and I have made my clients millions of dollars in revenue from platforms I built and worked on. I can build anything you can imagine, and I'm excited to help you build and grow your business through software! I am an I?????????? s????? ?i ?????????, specializing in building production-level MVP products using popular LLM architectures. I am an expert in creating custom AI, machine learning, data science, and statistical solutions. Key specializations- - Full-stack: Next JS, Tailwind CSS, MongoDB, Postgres - AI & automation: Generative ai (OpenAI, ChatGPT), Langchain, Computer vision - Cloud platforms and deployment - AWS, azure, GCP, Docker, kubernetes, CI/CD - Pipeline development in Stable diffusion, Comfy UI and API connectivity - Artificial intelligence - Machine learning, Deep learning, NLP, Ai agents - Computer vision - OCR, Image processing, Image generation, Text-to-image - Chatbot as dialogflow, Voximplant, twilio - Frameworks tensorFlow, Pytorch, Numpy, sci-kit-learn, Pandas, YOLo IOS / android & AI developer with 12 years of experience Other? No problem, write me a message! Let's get on a chat to see how I can help you. I can start immediately
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Experience
Full Stack Developer
Oct, 2020 - Jul, 2023
2 years, 9 months
Computools
Oct, 2020 - Jul, 2023
2 years, 9 months
Extensive experience in web and app development, specializing in programming languages such as C++, C, Java, Python, Swift, Kotlin, and C#. Proficient in building native and cross-platform applications for Android, iOS, Windows, and macOS. Expertise in modern web technologies, including Laravel, Vue.js, React.js, Next.js, Node.js, and JavaScript. Skilled in developing scalable, user-friendly websites and applications with seamless integration of third-party APIs.
Flag of
Nagoya, Japan
Oct, 2020 - Jul, 2023
2 years, 9 months
Mobile App Dveloper
Dec, 2010 - Dec, 2017
7 years
BetaMind, Inc
Dec, 2010 - Dec, 2017
7 years
Developed diverse mobile apps for Android, including games, services, educational tools, and news platforms, with a primary focus on Java. Adapted development to support various mobile device types and screen sizes. Stayed updated on emerging industry trends and integrated cutting-edge technologies into app development projects when relevant. Provided consistent maintenance for existing apps, ensuring prompt resolution of issues to maintain optimal performance.
Flag of
Tokyo, Japan
Dec, 2010 - Dec, 2017
7 years
Full Stack Developer
Apr, 2006 - Oct, 2010
4 years, 6 months
Ekotek
Apr, 2006 - Oct, 2010
4 years, 6 months
Developed Desktop APP with C/C++ and Java. Reviewed code, debugged problems, and corrected issues. Developed functional databases, applications and servers to support websites on back-end. Integrated third-party APIs to enhance functionality and improve overall user experience on web platforms. Reduced page load times by optimizing front-end assets such as JavaScript files, stylesheets, and images. Used NodeJS, Oracle and SQL/No-SQL to develop and manage databases.
Flag of
Tokyo, Japan
Apr, 2006 - Oct, 2010
4 years, 6 months
Education
Kyoto University
2004 - 2009
5 years
Computer Science
Flag of
Japan
2004 - 2009
5 years
Certifications
P
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