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Shigefumi K.
@shigefumi0820
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APP | Game | AI Engine Developer
$35 USD / Hour
・
Japan (4:57 AM)
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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
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.
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.
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.
Tokyo, Japan
Apr, 2006 - Oct, 2010
•
4 years, 6 months
Education
Kyoto University
2004 - 2009
•
5 years
Computer Science
Japan
2004 - 2009
•
5 years
Certifications
P
Preferred Freelancer Program SLA
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