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Fort Worth · Dallas, Texas

Softwareengineeredto last.

Custom software, websites, CRM, and AI for growing Texas companies — built by senior engineers, not bought off a shelf.

A MinMax LLC companyScroll
Custom SoftwareWebsitesCRM ImplementationAI AutomationBuilt to LastCustom SoftwareWebsitesCRM ImplementationAI AutomationBuilt to Last
§ 02The cracks you already feel

Most business software isn’t built. It’s accumulated.

A spreadsheet that grew load-bearing. Four SaaS tools that don't talk. An AI experiment that became tech debt. A site that no longer matches the company. Each fix adds weight to a structure no one designed — until growth is the thing that breaks it.

  • 01

    Manual data entry and double-keying between systems that should connect.

  • 02

    No single source of truth — every number needs three people to confirm.

  • 03

    Off-the-shelf tools that almost fit, bent until they're brittle.

  • 04

    Leads, intake, and after-hours inquiries quietly slipping through.

§ 01The arch

An arch holds because every stone is engineered to carry the next.

Roman arches still stand after two thousand years because the load is designed, not hoped for. We build software the same way — foundations first, a keystone that locks the system together, and structure that carries real business weight without cracking.

01Set

Foundations

We map how your business actually runs before writing a line of code. The base is right, or nothing on top of it is.

02Locked

The keystone

Every system has one component everything else leans on. We engineer that piece first, and lock the rest to it.

03Set

Load-bearing

Built by senior engineers to be maintained, extended, and trusted in five years — not rewritten next quarter.

§ 03One connected practice

Four disciplines, engineered to work as one system.

Not four vendors stapled together. Software, web, CRM, and AI built to carry the same load.

Internal tools, portals, dashboards, and integrations that replace the spreadsheet sprawl and connect the systems that should have been talking all along.

  • One source of truth across operations
  • Manual double-entry eliminated
  • Built to extend, documented to hand off

Who builds it

“Most software fails slowly — it’s fine until the day it isn’t. I build the load-bearing parts like they have to stand for years, because for your business, they do.”

Zachary Kauffman

Owner / Partner

More about Stonearc
§ 05How we build

A ladder, not a leap of faith.

Every engagement starts low-risk and earns the next rung. You always know the scope, the price, and the people before you climb.

00Start here

Foundation Audit

5 business days

A working session plus a review of your stack, returned as a written roadmap: the highest-leverage software, CRM, and AI opportunities, an ROI estimate for each, and a fixed-price plan for phase one. Credited in full toward any build over $8k. Money-back if it isn't worth it.

$2,000
01

Starter Builds

2–4 weeks

Fixed-scope, fixed-price entry points: the Keystone Site, a CRM Foundation, or one production AI Automation Pilot. A real, finished thing — not a proof of concept.

$5k–$15k
02

Custom Builds

Phased

The system your operation runs on, delivered in fixed-scope phases with senior engineers on every one. You see working software early and often.

$25k–$75k+
03

Architecture Retainer

Ongoing

We keep it standing: maintenance, extension, and the automation that keeps earning. The structure carries weight long after launch.

from $3k/mo

$2,000 · credited to your build · money-back