Horizon Dev LLC
We rebuild legacy data platforms for established companies
Horizon Dev rebuilds legacy data platforms for established companies stuck on outdated systems. We've completed 100+ production deployments, specializing in modernizing 10-30 year old platforms without disrupting daily operations.
Our team of 15 engineers works with React, Django, Node.js, Supabase, and PostgreSQL. We handle the full modernization lifecycle: assessment, data migration, API integration, OCR data extraction, custom application development, and ongoing support.
Notable projects include rebuilding VREF Aviation's 30-year-old aircraft valuation platform (67% revenue growth, 4.2x ROI in 18 months) and taking over a Microsoft website serving 1M+ annual users for a 2.0 launch shipped on deadline.
We focus exclusively on mid-market companies with complex data workflows who need their legacy systems rebuilt, not patched. If your platform is 10+ years old and holding back revenue, that's exactly what we fix.
United States
Why Horizon Dev LLC?
- Legacy system specialists (not generalists)
- More than 100 production deployments
- Full-stack team (frontend, backend, data & DevOp)
Industry Focus
- Business Services - 20%
- Financial & Payments - 20%
- Information Technology - 20%
- Manufacturing - 20%
- Other Industries - 20%
Client Focus
AI Tools & Purpose
ChatGPT
Speeds up research, planning, and system design
Claude
Handles complex logic, analysis, and documentation
GitHub Copilot
Accelerates development with production-ready code
Lovable
Rapid UI prototyping aligned with real workflows
