DEV Community: Koshiro Watanabe

Looking to Collaborate with Developers on AI, Web, or Startup Projects

Koshiro Watanabe — Thu, 30 Jul 2026 02:18:02 +0000

Hi everyone! 👋

My name is Koshiro, and I'm a Full Stack & AI Engineer from Japan with 8 years of software development experience.

I'm looking to connect with developers, founders, and technology enthusiasts from around the world. I enjoy building products, learning new technologies, and solving challenging problems together.

My main areas of experience include:

Full Stack Web Development
AI & LLM Applications
Python, JavaScript, TypeScript
React, Next.js, Node.js
Cloud & APIs
I'm interested in:

Open-source collaboration
AI projects
SaaS or startup ideas
Learning from experienced developers
Building long-term friendships and professional connections
If you're working on an interesting project or simply enjoy talking about technology, I'd love to connect. Even if we don't end up collaborating, I'm always happy to exchange ideas and learn from others.

Feel free to leave a comment or send me a message.

Looking forward to meeting you all!

I'm looking for a client that can work with me long-term. I'm a Full Stack | AI engineer with +5 years of experience. My main skills are Next.js React TypeScript OpenAl Codex Generative A1 MySQL AWS Tailwind CSS PostgreSQL Python MongoDB Fast API. Thankyou

Koshiro Watanabe — Thu, 30 Jul 2026 02:14:39 +0000

Looking for a recruiter

Koshiro Watanabe — Thu, 30 Jul 2026 02:09:35 +0000

Looking for a recruiter or hiring partner who can help place me in a full-time or long-term remote role.
I’m a Senior Full Stack AI Developer with 5+ years of experience building production AI/SaaS products. I work mainly with:

Python (FastAPI)
Next.js / React / TypeScript
LLMs & GenAI (OpenAI, automation workflows)
Docker, AWS, Vercel
PostgreSQL, MongoDB, Redis

I focus on clean, scalable architecture, AI feature integration, and shipping reliable products. I’ve helped clients launch multi-tenant SaaS platforms, add LLM capabilities, and stabilize systems that were becoming expensive to maintain.
Rate: $25/hr
Availability: 30+ hours/week, flexible timezone
Preference: Hourly or long-term contract
If you work with companies looking for strong Python + Next.js developers who also understand LLMs and GenAI, I’d be happy to connect.
Please reach out only if you have real openings or a clear path to placement. Looking for serious collaboration.
Thanks.