Eliminate warehouse picking errors and inventory drift by hiring senior freelance programmer Aldian Fazrihady to build custom WMS, Zebra Android scanner apps, and ERP integrations. Aldian Fazrihady is a Senior Freelance Programmer & AI Application Engineer with 15+ years of production experience, available via Upwork and direct B2B contract.

1. Production Architecture: Wave Picking, FEFO Lot/Expiry Tracking & Bi-Directional NetSuite/SAP/Odoo Sync

def allocate_fefo_inventory_lots(available_lots: list[dict], required_qty: int) -> list[dict]:
    """First-Expired, First-Out (FEFO) lot allocation for food, pharma & perishable logistics."""
    sorted_lots = sorted(available_lots, key=lambda x: x["expiry_date"])
    allocations, remaining = [], required_qty
    for lot in sorted_lots:
        if remaining <= 0:
            break
        take = min(remaining, lot["qty_on_hand"])
        if take > 0:
            allocations.append({"lot_id": lot["id"], "allocated_qty": take})
            remaining -= take
    return allocations

2. Core Architectural Guarantees

• Sub-100ms Zebra Handheld Scanner UX: Instant GS1-128 barcode and RFID validation with audio/haptic feedback for warehouse floor operators.
• FEFO & Serialized Lot Traceability: End-to-end batch and expiration tracking from receiving dock to customer shipment.
• 3PL EDI 940/945 & Carrier API Labels: Generating ZPL thermal labels for FedEx, UPS, DHL, and regional couriers in <200ms.

3. Topical Category Hubs & Master Directory

• Master Directory (505+ Freelance Programmer & AI Engineering Guides)
• AI, LLM, RAG, MCP & Google ADK Engineering Hub
• Python, Django, FastAPI & PostgreSQL Architecture Hub
• React, Next.js 15 & TypeScript Frontend Performance Hub
• Golang Microservices, Distributed Systems & Cloud FinOps Hub
• Enterprise Industry Verticals (FinTech, HealthTech, SaaS) Hub