Custom Software Development & Penetration Testing in Dallas, TX

Many of those mid-market operators are looking for someone who can modernize a creaking internal tool or harden an exposed application without paying a Big Four consulting rate. That is where QUANT LAB USA fits — senior engineering, fixed scope, founder-accountable, with documentation written for procurement and audit.

DFW concentrates more Fortune 500 headquarters than almost any other US metro — AT&T, ExxonMobil, McKesson, American Airlines, Texas Instruments, Caterpillar, Toyota Motor North America, Charles Schwab, and JPMorgan's second-largest operational footprint all anchor the region. Around them sits one of the country's densest logistics and freight bases: BNSF's national HQ in Fort Worth, the DFW airport hub, and the warehousing and distribution corridor running from Alliance Texas south through Dallas. The Lockheed Martin and Bell Textron defense ecosystem adds another layer of supplier-network software demand. And underneath the F500 layer sits a deep mid-market bench — energy services, healthcare admin, oilfield, real estate, and contract logistics — running on aging custom software that no longer fits how the business operates.

Big-four firms quote enterprise prices and assign juniors. National boutiques disappear when scope tightens. QUANT LAB USA is founder-led, fixed-scope, and accountable end-to-end. You get senior engineering at a mid-market price, with reports and documentation written for procurement and audit. For DFW mid-market IT leaders, that combination — senior accountability without the Big Four invoice — is the entire pitch.

Our most directly relevant case study for DFW corporate IT is the Active Directory penetration test for a regional financial services firm — a full internal assessment running eleven attack modules, every finding mapped to MITRE ATT&CK, full attack chain from standard user credential to Domain Admin documented with screenshots and timestamps. The client passed their compliance audit on the first attempt and engaged us for follow-up testing on a six-month cadence. Production builds and portfolio sites include J5 Sales OS, UEhub, Bridgepointe Painting, and Northcrest Fence.

DFW is one hour behind Georgia HQ, which means our morning and your late morning overlap completely for standups and design reviews. Most engagements start with a 60-minute scope by video, followed by a fly-in for an on-site kickoff afternoon — Plano, Frisco, Irving, downtown Dallas, or Fort Worth. After kickoff, build cycles run weekly with a Friday staging URL, written notes, and the next-week plan. Internal pen tests requiring on-site network access are scheduled on-site for the active testing window with remote reporting following. We bill fixed scope on virtually every Dallas engagement; T&M is reserved for open-ended R&D. Code, database, hosting account, and full documentation transfer happens at acceptance — exactly what a procurement team needs for the project to clear audit and ownership review.