Custom Software Development in Downtown Austin TX

Downtown Austin software buyers move fast. Venture-backed teams need senior engineering accountable to the contract, security posture that survives Series A diligence, and a fixed-quote model that does not balloon mid-engagement. QUANT LAB runs founder-led delivery on every project. William Beltz scopes, builds, and ships. There is no agency markup layer, no junior outsourcing, no project manager translating between you and the engineer writing the code.

The Austin buyer profile rewards depth in modern web and fintech infrastructure. Stripe Connect and metered billing for SaaS, OAuth/SSO and webhook fan-out for API products, and pen test reports that map to SOC 2 CC controls — these are the primitives that show up in every Series A diligence packet. We deliver them as part of the build, not as a separate scope line. Austin engagements close on fixed-scope proposals with weekly Friday demos and a written acceptance milestone.

We are headquartered in Macon, Georgia and run Eastern Time delivery with full overlap into Central Time. Austin engagements are remote-first, with one on-site session per major milestone — typically at a Second Street District office or near Lady Bird Lake. Build cycles run weekly: every Friday you get a deployed staging URL, written change notes, and the next-week plan. Austin engagements close on fixed-scope, fixed-price proposals — no open-ended T&M billing surprises.