Case Study — 03
Healthcare Micro-SaaS Platform
2026
Surgimate eSign
Replacing DocuSign with a first-party, HIPAA-grade e-signature platform & micro-SaaS, saving $1.4M+ annually.
DocuSign Financial Burn & Operational Bottlenecks.
Surgimate’s surgical practice management platform coordinates hundreds of thousands of pre-operative consent forms, anesthesia releases, and HIPAA disclosures across health systems nationwide.
DocuSign Enterprise Burn Breakdown ($1.4M–$2.1M+ / yr)
The Metered Billing Trap
Legacy integrations hardcoded single-signer workflows. If a surgical procedure required separate patient consent and physician sign-off, two distinct DocuSign envelopes were created—doubling per-case software expenses.
- 01.Lack of Patient SMS Auth: Email-only links failed for elderly or emergency pre-op patients without email access.
- 02.Vendor Lock-in: Predictable 15-20% annual contract price hikes with zero UI customization flexibility.
- 03.Fragmented Audits: Legal evidence logs lived inside third-party servers rather than Surgimate’s database.
First-Party eSign Micro-SaaS: 97% Direct Cost Reduction.
┌───────────────────────────────────────────────────────────────────────────────────┐ │ SURGIMATE eSIGN ARCHITECTURE │ ├───────────────────────────────────────────────────────────────────────────────────┤ │ ┌──────────────────┐ ┌──────────────────┐ ┌──────────────────────┐ │ │ │ Signer SPA │ │ Admin SPA │ │ Parent Monolith │ │ │ │ (Vite + React) │ │ (Vite + React) │ │ (koala-rails) │ │ │ └────────┬─────────┘ └────────┬─────────┘ └──────────┬───────────┘ │ │ │ │ │ │ │ ┌────────▼──────────────────────────▼─────────────────────────────▼───────────┐ │ │ │ Surgimate eSign REST API (NestJS) │ │ │ │ PAdES B-LTA Engine • Hash-Chained Audit • RLS Tenant Isolation │ │ │ └────────┬─────────────┬─────────────┬────────────────────┬───────────────────┘ │ │ │ │ │ │ │ │ ┌───────▼───────┐ ┌───▼────┐ ┌──────▼──────┐ ┌──────────▼───────────────────┐ │ │ │ PostgreSQL 16 │ │ Redis │ │ AWS S3 / KMS│ │ Mailgun (BAA) / Telnyx SMS │ │ │ └───────────────┘ └────────┘ └─────────────┘ └─────────────────────────────┘ │ └───────────────────────────────────────────────────────────────────────────────────┘
Explore the Surgimate eSign Platform.
1. Public SaaS Portal (surgisign.com)
The Astro-powered marketing site showcasing HIPAA compliance certifications, PAdES B-LTA standards, and ROI calculators.
HIPAA, PAdES & Court-Admissible Standards.
PAdES B-LTA Cryptographic Engine
Native digital signatures embedded directly into PDFs via pdf-lib and node-forge, sealed with RFC 3161 timestamps, DSS dictionaries, and AATL trust anchors for permanent legal non-repudiation.
Tamper-Evident Hash-Chained Audit Trail
Every envelope lifecycle event (created, dispatched, opened, signed, sealed) appends to a SHA-256 cryptographic chain, mirrored synchronously to AWS S3 Object Lock in compliance with HIPAA audit guidelines.
export function appendAuditEvent(
prevHash: string,
payload: Record<string, unknown>
): string {
const content = JSON.stringify({
prevHash,
payload,
timestamp: new Date().toISOString()
});
return createHash('sha256').update(content).digest('hex');
}Row-Level Security & Zero-Downtime Cutover
Multi-tenant PostgreSQL RLS ensures strict data isolation between surgical practice networks. Delivered a 20-stage cutover plan featuring dual-send shadow verification against DocuSign with 0 risk to live patient workflows.