About Twinn Engineering
We're a small, focused team that builds data infrastructure for the construction industry. We know Sage 100 Contractor inside and out — because we've spent years working alongside the people who depend on it every day.
How OPDC Started
OPDC grew out of necessity. Over the past decade, our team deployed more than 20 custom Sage integrations on-premise for contractors across the Southeast. The early versions were simple desktop applications — small tools built to solve specific problems for individual clients.
As those tools proved reliable, more users came on board. What started as one-off utilities became a shared platform. We built our first server application to propagate configurations across machines, and before long, our internal tooling had become something clients were actively asking for.
OPDC is the productized version of that internal platform — built on a decade of real-world deployments, hardened by production use, and designed to be the single secure layer between Sage 100 Contractor and everything else.
Our Team
CEO & Founder
30 years in the Sage ecosystem
Our CEO has worked with Sage products since their earliest iterations in the 1990s. With a career spanning CFO roles and business operations leadership, she brings deep domain knowledge of how contractors actually run their back office — from job costing to payroll to compliance. She sets the direction for Twinn Engineering and ensures everything we build solves real problems for real businesses.
Lead Developer
10+ years of enterprise development
The architect behind OPDC. Over a decade of enterprise software experience spanning fintech platforms and government mainframe systems. Obsessed with writing clean, reliable code and turning complex infrastructure problems into simple, well-documented APIs.
Database Administrator
10+ years in data engineering
Our DBA brings a decade of experience in database architecture and a passion for data science. They own our query layer, analytics pipelines, and testing infrastructure — making sure the data you pull through OPDC is fast, accurate, and reliable.
Support Engineer
Background in major cloud platforms
Our support engineer cut their teeth at two of the largest cloud infrastructure companies in the world. They bring enterprise-grade support practices to a team small enough to actually know your name and your setup.
What We Value
Security by Default
Your data never leaves your network unless you say so. Read-only access, encrypted connections, no cloud databases.
Ship Things That Work
We'd rather ship a reliable tool that solves one problem well than a feature-packed product that breaks under pressure.
Know Our Customer
We build for people who run real businesses. That means fast support, honest roadmaps, and tools that respect your time.
Based in Atlanta
Twinn Engineering is headquartered in Atlanta, Georgia. We work closely with contractors and Sage consultants across the Southeast and beyond.