We build custom sites, applications, and AI integrations for businesses that can't afford to ship twice. Written quote in 48 hours. No discovery call required.
Cardinal's production work spans healthcare, financial compliance, legal, and consumer. Filter by vertical, or scan all twelve. Public-URL projects link out; private deploys and enterprise SaaS open a project-brief request.
AI-powered mental health platform for providers and clients. HIPAA-compliant. iOS, Android, and web apps with AI journaling, clinical documentation support, and provider-client communication.
HIPAA · BAA-grade · PHI in production
Online SEC form submission platform for compliance and disclosure reporting, built for EDGAR-connected regulatory workflows.
SEC · EDGAR-integrated
Wholesale and retail e-commerce store for a consumer product line.
E-commerce
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 · 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 entry points into a Cardinal build, priced at flat fees so you see the number before you commit. Custom scope inside any tier is welcome and quoted up or down in writing before commitment.
Idea, sketch, or memo turned into a working prototype
5–7 days · flat
Send a brief, a Loom walkthrough, or a sketch. We turn it into a working prototype on a temporary domain you can share with investors, advisors, or early users. Real interactions, real data, real flow. Yours to keep, throw away, or upgrade to a Flagship Build.
Includes 30 days of free fixes after handoff.
Most clients upgrade to Flagship Build after validation.
Hand-built launch site at your domain
7–10 days · flat
Brand voice copywriting, custom design, on-page SEO with AIO and GEO baseline. No template kits, no bento grids, no stock photography. The site you're reading is a Signature Site we built for ourselves.
Includes 30 days of free fixes after handoff.
Includes 30-day Foundation retainer. Most clients renew.
Basic 5–10 pages from $7,500 · Advanced 10–25 pages from $12,000 · Enterprise / regulated 25–40+ pages from $28,000
Full custom build, AI-coded, agent-ready, compliance-grade
2–5 weeks · flat
Full custom build for established businesses, regulated firms, and growth-stage startups. Custom AI-coded site or application, brand voice copywriting, SEO with AIO and GEO baseline, ADA WCAG 2.1 AA, Scout (our AI sales agent) integrated, compliance posture configured (HIPAA, attorney-client, SEC) where required, and your retainer tier active from day one.
Includes 30 days of free fixes after handoff.
Includes 30-day Accelerator retainer. Most clients renew at Accelerator or Apex.
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No discovery calls. No statement of work theater. Send a brief, get a written scope and a flat number inside two business days. If the quote works, we start.
Six areas of depth. Project names link back to the portfolio grid at the top of this page.
Cardinal Stacks operates as a senior engineering team with production experience across regulated industries. Three named leaders, US-based delivery, direct communication throughout. No junior handoffs, no account manager layers.
Co-Founder, Technology & AI Systems
Kanji built Cardinal's operating stack (Pulse, Triage, Redactor, Worktree, Bug Catcher, and Scout) and the parallel-agent orchestration methodology that runs every engagement. His background spans AI systems architecture, parallel-agent orchestration, and production software across regulated environments. He shapes how Cardinal deploys AI at the infrastructure layer, from data handling through model orchestration.
Co-Founder, Operations & Strategy
Alex leads operations, client strategy, and go-to-market at Cardinal Stacks. He has founded and operated multiple companies across healthcare AI, medical billing, and SEC-regulated financial services, giving Cardinal direct operator experience in the environments its clients work in. He has personally overseen production deployments under HIPAA, SEC, and attorney-client compliance requirements.
CTO, Chief Software Engineer
Nasir leads engineering delivery at Cardinal Stacks. He brings senior software engineering depth across production systems in healthcare, financial compliance, and AI-integrated platforms. He is responsible for architecture decisions, code quality standards, and the engineering team that executes every Cardinal engagement.
Cardinal engagements are delivered by a senior engineering team with production experience across regulated industries. Every engagement is led by a named senior engineer from scoping through handoff. US-based project management. Direct communication throughout. No junior handoffs, no account manager layers.
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.