Ahmed Z.

I build Python backends and AI applications with FastAPI and OpenAI API. From RAG assistants that search your documents to pipelines that extract structured data, I handle development, integration, and deployment. My Upwork track record includes $40K+ earned, 1,865 hours, and a client relationship spanning nearly three years. With 4+ years of engineering experience, I help clients build new applications, extend existing products, and automate document and data workflows. SELECTED WORK • RAG career assistant : document retrieval, CV analysis, and job matching in an interactive application. • AI construction estimation SaaS : plan-to-BOQ automation for construction estimation workflows. • Multi-provider speech-to-text API : a FastAPI and Docker service integrating speech recognition providers. • Document extraction pipelines : processing PDFs and images into structured JSON for downstream applications. HOW I CAN HELP → LLM & RAG applications AI assistants, document ingestion, vector retrieval, reranking, multi-turn conversations, prompt engineering, and structured outputs. → Python backend development FastAPI, PostgreSQL, Redis, REST APIs, asynchronous processing, WebSockets, and integrations with existing applications and external services. → Document processing & automation PDF and image extraction with PyMuPDF and Tesseract, batch processing, web scraping, and pipelines that move data between your sources and business tools. → Deployment & application integration Docker, Docker Compose, Linux servers, multi-service deployments, Streamlit interfaces, and speech-to-text/text-to-speech integration. My background also includes NLP, computer vision, and transformer fine-tuning, giving me a foundation for projects that combine language, documents, images, and other data. I can take responsibility for an entire application or contribute to a specific part of your existing system. You can expect clear communication, practical documentation, and thoughtful discussion of technical choices and trade-offs. Send me a brief description of what you’re building, your current stack, and the part you need help with.