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Jon Thak
@jonthak
Senior Full Stack Web Developer: React I Node I Wordpress I Shopify I AI ML LLM
United States
Japanese, Dutch, Norwegian, German, Chinese, Arabic, Danish, Italian, Spanish, English, French
About me
👋 Welcome! I'm Jon, a Senior Full Stack Developer with 8+ years building scalable web apps and AI-powered systems.
🔹 Web Dev: React, Next.JS, Node.Js, PHP, Laravel, WordPress (builds, fixes, plugins) and Shopify (stores, custom apps, themes).
🔹 AI/ML: Python, FastAPI, LLM engineering, RAG systems, AI agents, and custom chatbots — From MLOps pipelines to production-ready AI integrations, not just demos.
Website fixed, store built, or AI agent deployed — I deliver clean code and reliable results.
🚀 Have an idea? Let's turn it into reality.
Skills
Jon Thak
Offline •
Average response time: 1 hour
See my services
Bug Fixes
I will fix wordpress website issues, errors, bugs, customize theme, woocommerce plugins
Full Stack Web Applications
I will full stack web app development react js next js node js php laravel ai developer
Work experience
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Senior Full Stack Developer — Freelance / Agency
Fiverr • Freelance
Jan 2017 - Present • 9 yrs 7 mos
Design and build full-stack web applications and AI-powered systems for clients across the US, EU, and APAC. Core stack: React, Next.Js, Node.js, PHP Laravel, Next.js. Deliver custom WordPress sites, plugin fixes, and Shopify stores end-to-end. In parallel, build production AI systems — RAG pipelines, LLM-powered chatbots, and autonomous AI agents — using Python, FastAPI, and modern MLOps practices. Manage projects from requirements through deployment and support.
5 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 5 Reviews
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shaunalin
United States
Clear communication throughout, delivered exactly what we asked for. Our analyst team now gets structured outputs automatically instead of spending hours pulling data manually. Documentation was thorough enough for our team to maintain it in house. On time, no surprises. Will hire again. highly recommend.
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megan_galla
United States
🌟🌟🌟🌟🌟Outstanding developer! He quickly fixed a React issue that had been bothering us. The work was delivered fast, with clear communication and flawless execution. His expertise in React really shows, and it’s clear he’s skilled across full stack development (frontend + backend). I’ll definitely...
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joshua_brad01
United States
I had an amazing experience working with this seller! He is a highly skilled full stack developer with strong expertise in both front-end and back-end development. He quickly understood my requirements, fixed complex issues, and also developed custom features for my website with clean, professional code. Communication...
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alia911
United States
Highly recommend for technical wordpress issues. Very Talented developer. He was excellent to work with. He responded quickly and communicated clearly throughout the process. His expertise in debugging my WordPress website and Forminator form was outstanding. He also implemented custom code to meet all...
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sarah_cat85
United States
A true professional – fast, reliable, and always available! I want to give a huge thank you to Jonthak an absolute professional in the field! I was dealing with several urgent issues on my website, and he managed to resolve everything quickly, efficiently, and flawlessly. I am very satisfied with my...
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