Custom Software Development & Penetration Testing in Knoxville, TN

QUANT LAB USA pairs custom software engineering with hands-on penetration testing rooted in the MITRE ATT&CK framework. We are a Macon, Georgia firm serving Knoxville remote-first across the same Eastern Time zone, with travel into Knox, Blount, and Anderson counties for major builds and on-site network work. Knoxville operators typically need the same things: data tooling that integrates cleanly, multi-tenant SaaS that scales, and a pen test report that satisfies a supply-chain or SOC 2 review.

Knoxville's software demand is shaped by research and energy. The national-lab and energy ecosystem in Oak Ridge — the largest science and energy research complex in the region — anchors a supply chain of contractors, engineering firms, and technology vendors that need data pipelines, dashboards, and integration tooling, often with elevated security expectations. The University of Tennessee feeds a talent pipeline and a spinout scene supported by the Knoxville Entrepreneur Center and Innovation Crossing. The metro also hosts notable employers across logistics and consumer goods, plus a health-systems base anchored by UT Medical Center and Covenant Health. The common thread is that buyers here are technically literate and care about how software is built and secured.

Most Knoxville shops are either small generalist studios or staff-augmentation bodies. We sit in the middle: founder-led delivery with enterprise-grade engineering practices and in-house offensive security. No offshore handoff and no junior outsourcing — William Beltz scopes, builds, and ships. That matters when an Oak Ridge supply-chain operator needs both custom tooling and a pen test report that satisfies a security questionnaire, or when a UT spinout needs a clean multi-tenant platform.

Knoxville buyers are technical and expect senior accountability. Our model delivers exactly that: every engagement is scoped, built, and shipped by the founder, on a fixed-scope and fixed-price proposal with a written acceptance milestone — not open-ended time-and-materials billing. Our pen testing is in-house capability, not a subcontracted line item: Active Directory abuse paths, lateral movement, ADCS certificate abuse, Kerberoasting, wireless attacks, and web application exploitation, with every finding mapped to a MITRE ATT&CK technique ID. And every line of software we ship is reviewed against the same threat models we use on offensive engagements.

We run full Eastern Time overlap from Macon, which keeps standups and reviews on Knoxville's clock. Most kickoffs are a video call followed by a single on-site afternoon — typically downtown, in Farragut, or out toward Oak Ridge — to walk the workflow we are replacing. From there, build cycles run weekly: every Friday you get a deployed staging URL, written notes on what changed, and the next-week plan. Pen testing engagements run from secure remote infrastructure with strict source-IP allowlisting and authenticated VPN tunnels for internal scope, and we travel to Knoxville for sensitive scoping and for internal tests requiring on-site network access. Reports ship in two formats: a technical deliverable with reproduction steps for the security team, and a board-readable executive summary with a prioritized remediation roadmap. Most Knoxville engagements close inside 4–6 weeks from kickoff to final report.