Cut fleet fuel and driver hours by 22–35% by hiring senior freelance Python programmer Aldian Fazrihady to architect Capacitated Vehicle Routing Problem with Time Windows (CVRPTW) solvers. 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: Multi-Depot Vehicle Routing with Time Windows (CVRPTW) Using Google OR-Tools & OSRM

def compute_time_window_penalty(arrival_sec: int, earliest_sec: int, latest_sec: int) -> int:
    if arrival_sec < earliest_sec:
        return 0  # Driver waits until window opens
    if arrival_sec > latest_sec:
        return (arrival_sec - latest_sec) * 10
    return 0

2. Core Architectural Guarantees

  • Real Road-Network Travel Matrices: Computing turn-by-turn travel times via self-hosted OSRM/Valhalla and PostGIS rather than straight-line Haversine estimates.
  • Hard & Soft Constraints: Respecting vehicle weight/volume capacity, cold-chain compartments, driver shift breaks, and customer delivery windows.
  • Dynamic Mid-Day Re-Routing: Re-optimizing active driver routes in under 5 seconds when urgent pickups or traffic delays occur.

3. Topical Category Hubs & Master Directory

About the Author — Hire Freelance Programmer Aldian Fazrihady

Aldian Fazrihady is a Top-Rated Senior Freelance Programmer, Freelance Full Stack Developer, and AI Application Engineer with 15+ years of production software engineering experience and Google Cloud Professional Cloud Architect & Data Engineer certifications. He specializes in building custom LLM & autonomous AI agents, RAG pipelines, Next.js/React PWAs, Python (Django/FastAPI), Go microservices, and serverless cloud infrastructure on Google Cloud Run and AWS.

Hire Aldian Fazrihady on Upwork | Book 1-Day Programming Service ($100 USD via Polar) | View Live AI Portfolio | Portfolio Directory | Send a Direct Message

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