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webexpert_deve

David C

@webexpert_deve

AI developer specializing in LLM, RAG chatbots, SaaS and automation

United States
English, Arabic, Luxembourgish, Italian, German, Spanish, Hebrew
About me
Hi, I’m David, an AI developer and full stack specialist helping businesses build smart, scalable AI solutions. I specialize in LLM-powered systems, including chatbots, RAG solutions, AI SaaS apps, automation tools, and voice agents designed to improve customer experience and streamline operations. I work with startups, agencies, and entrepreneurs using tools like OpenAI, LangChain, and vector databases, delivering reliable solutions that save time, boost efficiency, and grow your business. ... Read more

Skills

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webexpert_deve
David C
Offline • 
Average response time: 1 hour

See my services

Generative Engine Optimization
I will do monthly website local off page, GEO, aeo,SEO backlinks building llm ai search
From$50 / projectMore details
AI Websites & Software
I will develop ai website, ai app chatbot saas, llm ai software as full stack developer
From$85 / projectMore details

Work experience

Upwork

AI Chatbot & Automation Specialist

Upwork • Freelance

Jan 2023 - Present • 3 yrs 4 mos

Designed and deployed AI-powered chatbots and automation systems for businesses across different industries. Built RAG-based chatbots trained on websites, PDFs, and internal data to provide accurate and real-time responses. Integrated LLM APIs to handle customer support, lead generation, and workflow automation. Improved response time, reduced manual workload, and increased customer engagement for clients.

Technoloy

Full Stack AI & SaaS Developer

Technoloy • Part-time

Mar 2022 - Present • 4 yrs 2 mos

Developed scalable AI SaaS platforms and web applications integrating LLM capabilities. Built full stack systems with user dashboards, API integrations, and intelligent AI features such as chatbots, recommendation systems, and automation tools. Delivered end-to-end solutions from UI to backend, ensuring performance, scalability, and user-friendly experience.

Fiverr

SEO & AI Visibility Specialist

Fiverr • Freelance

Jun 2021 - Present • 4 yrs 11 mos

Worked on improving online visibility through advanced SEO strategies combined with AI-driven optimization. Built high-quality backlinks, optimized content for search engines, and implemented GEO targeting strategies. Focused on improving rankings, organic traffic, and brand visibility across search platforms and AI-driven discovery systems.