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Lassie Tech Stack

AI automation for independent medical practice operations

Software Development San Francisco 11–50 employees Privately Held

Lassie automates back-office work for independent medical practices—claims processing, payment reconciliation, denial handling—using Python, Django, and Pydantic AI on a PostgreSQL + GCP stack. The hiring mix (heavy on sales and ops, with concurrent security scaling) and active projects (pricing design, sales commission structure, live workflows, threat-modeling) reveal a company moving from product-market fit into revenue operations and security hardening as it scales customer onboarding.

Tech Stack 14 technologies

Core StackPython Django PostgreSQL Redis TypeScript React Tailwind CSS Vercel Slack Pydantic AI GCP Linear Notion SQLite

What Lassie Is Building

Challenges

  • Building financial operations from scratch
  • Transitioning founder-led finance to world-class function
  • Scaling finance infrastructure
  • Reducing churn risk
  • Expanding product usage
  • Reducing busywork for doctors' offices
  • Getting doctors' offices live
  • Protecting customer data
  • Ensuring trust in critical workflows
  • Enabling rapid development while secure

Active Projects

  • Ai-native finance infrastructure
  • Pricing structure design
  • Sales commission design
  • Demand generation outreach for doctors' offices
  • Implementing live workflows
  • Improving processes from customer issue patterns
  • Core security systems for access control, audit logs, data protection, monitoring, incident readiness
  • Threat-modeling new agent workflows
  • Building secure sync engine
  • An effortless onboarding experience for doctors

Hiring Activity

Accelerating10 roles · 8 in 30d

Department

Sales
3
Ops
2
Product
2
Finance
1
HR
1
Marketing
1
Security
1

Seniority

Mid
4
Senior
4
Junior
1
Lead
1
VP
1

Notable leadership hires: Growth Lead

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About Lassie

Lassie provides autonomous back-office automation for independent medical practices, handling administrative tasks (insurance claims, payment processing, denial appeals) that typically consume ~200 hours per month of manual labor. The product serves over 700 practices across 49 U.S. states. The core offering runs continuously, reducing administrative burden so doctors and staff can redirect time to patient care. Sales and operations hiring is accelerating alongside product work on live workflows and customer onboarding.

HeadquartersSan Francisco
Company Size11–50 employees
Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Lassie use?

Python, Django, Pydantic AI, PostgreSQL, Redis, TypeScript, React, Tailwind CSS, GCP, and Vercel. The backend is Django + PostgreSQL with async task handling via Redis; the frontend is React + Tailwind deployed on Vercel.

How many practices use Lassie?

Over 700 independent medical practices across 49 U.S. states use Lassie. In the past year, the platform saved more than 250,000 hours of administrative labor.

How this profile is built

Lassie's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.