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Square Mill

What we do

Software built for your business.

We work directly with you to build custom software that third-party tools don't solve.

Product design + engineering

From early product decisions through production, we bring UX/UI, Ruby on Rails, React, data, infrastructure, and deployment into one continuous process.

Software for business operations

Custom workflows, permissions, reporting, APIs, and integrations shaped around the way your business actually runs.

Healthcare data platforms

Secure data intake, validation, reporting, analytics, and public tools for statewide health data programs.

Applied AI workflows

Document extraction, search, summarization, classification, cited Q&A, and human review, grounded in real product needs.

Legacy system modernization

We turn FileMaker Pro, Microsoft Access, and aging web systems into secure applications people can use across devices and locations.

Accessibility, security + compliance

We turn WCAG, HIPAA, SOC 2, PCI DSS, and other requirements into tested product features and useful documentation, including OpenACR and VPAT reports.

What are you working on?

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