Build high-converting real estate portals, automated valuation models (AVMs), and property management SaaS by hiring senior freelance PropTech programmer Aldian Fazrihady. 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: RESO Web API OData MLS Synchronization, Mapbox Polygon Search & AI Lease Abstraction

def compute_cap_rate_and_cash_on_cash(noi_annual: float, purchase_price: float, annual_debt_service: float, total_cash_invested: float) -> dict:
    cap_rate = (noi_annual / purchase_price) * 100.0 if purchase_price > 0 else 0.0
    cash_flow = noi_annual - annual_debt_service
    coc_return = (cash_flow / total_cash_invested) * 100.0 if total_cash_invested > 0 else 0.0
    return {"cap_rate_pct": round(cap_rate, 2), "cash_on_cash_pct": round(coc_return, 2)}

2. Core Architectural Guarantees

  • Multi-MLS RESO Web API Ingestion: Normalizing property listings, media photos, and status changes every 5 minutes across regional MLS feeds.
  • Custom Draw-on-Map Polygon Search: Sub-15ms PostGIS `ST_Contains` and commute-time isochrone filtering.
  • Commercial Real Estate (CRE) Lease AI: Extracting rent escalation schedules, CAM charges, and renewal options from 100-page commercial leases.

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.

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Freelance Programmer Specializations & Category Hubs