Healthcare providers, logistics brokers, legal teams, and accounting firms process millions of multi-page PDFs, scanned invoices, medical lab reports, bills of lading, and complex tables every day. Legacy template-based OCR breaks whenever a vendor changes their invoice layout, while naive LLM prompts hallucinate numbers or fail on 100-page scanned documents.
If you need to hire a freelance AI document processing and PDF extraction programmer, I am Aldian Fazrihady—a senior AI application engineer and full stack developer who builds high-accuracy, human-in-the-loop document intelligence pipelines.
How I Engineer Production Document AI Pipelines
1. Hybrid Layout-Aware OCR + Vision LLMs
I combine layout-aware document parsers (Google Document AI, AWS Textract, PyMuPDF) with multimodal Vision LLMs (Gemini 2.5 Pro, Claude, GPT-4o) to preserve bounding-box coordinates, multi-column reading order, and complex financial or clinical tables.
2. Strict Pydantic Schema Validation & Mathematical Reconciliation
Every extracted document is validated against strict Pydantic schemas with deterministic business rules: line items must sum to the subtotal, dates must be calendar-valid, and tax IDs or ICD-10/CPT codes are cross-checked against reference databases before entering your ERP or EHR.
3. Interactive Side-by-Side Verification UI
When confidence scores on specific fields fall below threshold, the document routes to a fast React review interface that highlights the exact source bounding box on the PDF next to the editable form field—allowing operators to verify exceptions in seconds.
Hire a Freelance AI Document Processing Programmer
- Upwork: https://www.upwork.com/freelancers/aldianf
- Email: mobile@aldianfazrihady.com
- Related Guide: Freelance AI Programmer Guide: LLMs, RAG & Agents