Custom sites, applications, and AI integrations built by a senior team with production experience across regulated industries, fast-moving startups, and complex builds of every kind. Flat fee. Written quote in 48 hours. No call required.
Selected projects across several industries. Some are in regulated sectors where the engineering bar is highest. All are in production. Public-URL projects link out; private deploys and enterprise SaaS open a project-brief request.
AI-powered mental health platform for providers and clients. iOS, Android, and web apps with AI journaling, clinical documentation support, and provider-client communication. Mental health data is some of the most sensitive information in production, and every LLM call runs through Redactor before any external model sees it.
HIPAA · BAA-grade · PHI in production
Online SEC form submission platform for compliance and disclosure reporting, built for EDGAR-connected regulatory workflows. A filing error at the SEC is not a bug report, it is a regulatory event. This system was built with that knowledge in every decision.
SEC · EDGAR-integrated
Compliance communication platform for mutual fund prospectus distribution and regulatory reporting.
SEC · FINRA-aware · Mutual fund regulated
Account management and access control SaaS for financial compliance teams. Multi-user, role-based, audit-ready.
SEC · Financial regulatory
Financial print project management platform with integrated print-on-demand, built for public company issuers and mutual fund reporting.
SEC · Financial reporting regulated
High-volume encrypted project management platform for financial compliance and EDGAR filing workflows. Client database, automated archives and backups, integrated email and reminders, team collaboration, extensive reporting.
SEC · EDGAR-adjacent · Encrypted · Audit-trailed
Anesthesia information management system for charge capture and clinical documentation. Built for hospital deployment under full HIPAA posture.
HIPAA · PHI in production · Hospital deploy
SaaS platform for medical provider credentialing and compliance management.
Healthcare regulatory
Legal case discovery and case management application for plaintiff-side legal teams. Attorney-client privilege is not a compliance checkbox, it is the foundation of the client relationship. Every architecture decision treated it that way.
Attorney-client privilege · Confidential data handling
Legal document management platform for handling confidential files, extracting PII, and redacting sensitive information from legal materials. Client-built legal product, distinct from Cardinal's internal Redactor tool.
Attorney-client privilege · PII handling · Confidential document workflow
Mobile application for learning Japanese kanji. iOS and Android.
Consumer app
Three starting points, priced flat so you know the number before you decide. Scope inside any tier can be adjusted up or down, in writing, before we touch anything. Pick the one that fits where you are right now.
You have an idea. Let's find out if it holds.
5-7 days · flat
Send us two paragraphs, a Loom, or a sketch. We build a working prototype on a temporary domain in 5 to 7 days, real interactions, real data, real flow. Something you can put in front of investors, advisors, or your first ten users and get a real answer from.
Includes 30 days of free fixes after handoff. If the prototype validates, most clients move to a Flagship Build. If it does not, you spent $1,800 to find out before you spent $75,000 to find out.
A site that looks like you built it on purpose.
7-10 days · flat
Brand voice copywriting, custom design, on-page SEO tuned for both traditional search and AI-driven results. No template kits, no bento grids, no stock photography. Every Signature Site is written and designed from the company up, not from a theme kit down.
The site you are reading right now is a Signature Site. We built it for ourselves, to the same standard we would build yours.
Includes 30 days of free fixes after handoff, plus a 30-day Foundation retainer so the site does not sit unmonitored on day 31.
Straightforward sites and applications from $7,500 · Multi-feature applications and complex sites from $12,000 · Full regulated builds from $28,000
The full build. Done once, done right.
2-5 weeks · flat
For established businesses, regulated firms, and growth-stage startups that need the complete system built, not assembled from pieces. Custom application or site, written in your brand voice, designed from scratch, with compliance posture configured from day one, not retrofitted after the fact.
ADA WCAG 2.1 AA, AIO and GEO-optimized SEO, and Scout, Cardinal's AI sales and support agent, wired in and trained on your business before we hand over the keys.
Includes 30 days of free fixes after handoff and a 30-day Accelerator retainer. Everything running, monitored, and supported before you are on your own.
Already shipped something with AI? See Vibe Rescue →
No discovery calls. No statement of work theater. Send a brief, get a written scope and a flat number within two business days. If the number works, we start the day you say go.
Six areas of depth. Project names link back to the portfolio grid at the top of this page.
Three named founders, US-based delivery, direct communication throughout. Kanji built the Cardinal operating stack and the parallel-agent methodology behind our delivery speed. Nasir leads engineering and sets the architecture standards every engagement is held to. Alex has operated companies under HIPAA, SEC, and attorney-client requirements, the same environments many of our clients work in.
No junior handoffs. No account manager between you and the people doing the work.
After launch, the work compounds.
Every Cardinal engagement feeds into a retainer that handles hosting, monitoring, AI search visibility, content, and ongoing development. Three tiers: Foundation, Accelerator, Apex. Flat monthly fees. No hourly billing.
More questions about how Cardinal works? See the full FAQ
Every brief gets read by a founder. We write back within 48 hours.