Software Engineer, Security
Role summary by JobGrid
Software Engineer, Security at Lassie: San Francisco, United States; On-site; Senior; IT; Security Engineer. This listing is part of JobGrid's Software engineer jobs from public company career pages. JobGrid adds normalized role facts, source context, and a path to the employer application page so candidates can compare the listing before applying.
- Location and workplace: San Francisco, United States, On-site
- Role classification: IT, Security Engineer, Senior
- Source freshness: checked by JobGrid on 2026-06-05.
- Application path: candidates continue to the employer application page with non-personal referral tags.
Our mission is to help small businesses run themselves. We’re starting with doctors’ offices, building autonomous systems that handle busywork and complete the workflows that keep the office moving every day. Our team is small, flat, and ambitious. We value craft, intellectual rigor, and direct communication.
About the roleSecurity engineers make Lassie trustworthy enough to operate inside critical office workflows. You’ll build the controls, systems, and engineering practices that protect customer data while letting an ambitious team move quickly.
What you'll doBuild core security systems across access control, audit logs, data protection, monitoring, and incident readiness
Partner with engineering to threat-model new agent workflows and make security part of how we build
Help Lassie move quickly while earning the trust required to operate inside critical office systems
Data pipelines processing $1B+ in insurance claims
Systems that eliminate thousands of hours of paperwork every month
A sync engine backed by encrypted SQLite in the browser, enabling 100ms experiences for healthcare payments and patient ledgers
We invest heavily in productivity. Engineers should have the best tools for the job and the freedom to choose them.
Python (Django, Pydantic AI), Postgres, Redis
TypeScript, React, Tailwind
Google Cloud Platform, Vercel
Linear, Slack, Notion
To start, you'll have a handful of conversations with our team and founders. If there is mutual excitement, we'll invite you to the office where you'll work on a small project and meet the team.