j
jossyam21

Yosef M.

@jossyam21

Web Developer and AI Engineer

Ethiopia
English, Amharic
About me
Most developers will build you a product. I'll build you one that thinks. Full-stack developer and AI specialist — React, Next.js, Tailwind, Python, FastAPI, MongoDB. I turn complex ideas into fast, production-ready apps with real AI built in: chatbots that remember your users, RAG pipelines that make documents answer questions intelligently, and AI agents that automate multi-step workflows. If you've ever wished your app could understand your users—not just serve them—that's exactly the kind of work I love. Clean communication. Honest timelines. No ghost jobs. Let's talk.... Read more

Skills

j
jossyam21
Yosef M.
Offline • 

See my services

Custom Websites
I will build a fullstack ecommerce app with ai chatbot and live order tracking
From$100 / projectMore details
AI Integrations
I will build an ai agent that researches, scores, and emails your leads for you
From$90 / projectMore details

Portfolio

Work experience

Upwork

Web Developing and AI Engineering

Upwork • Freelance

Jul 2026 - Present • 0 mos

Full-Stack Developer & AI Engineer Build production web applications and AI-powered tools end-to-end—from UI to backend to the AI layer itself. Comfortable owning a project from spec to deployment rather than just one slice of the stack. What I've built: • Designed and shipped full-stack apps using React.js, Next.js, Python/FastAPI, and MongoDB, handling everything from data modeling to responsive Tailwind CSS interfaces. • Built memory-enabled chatbots using Claude/GPT APIs combined with mem0 and LangChain so conversations retain context across sessions instead of resetting each time. • Developed Document AI pipelines with RAG (LlamaIndex, Haystack, Pinecone/FAISS) that let users query large document sets in plain language and get accurate, sourced answers. • Architected a multi-agent research and outreach automation system (LangGraph/CrewAI) that autonomously finds leads, researches them, and drafts personalized outreach—cutting manual research time significantly. • Set up no-code/low-code automation flows (n8n, Zapier) for clients who needed AI capability without a full dev team. Approach: I test ideas by building working prototypes first, then refine based on what actually holds up—not just what looks good on paper. Clients get something they can click through and evaluate, not just a proposal.