Application Security Lead
Core
Define and own the application security posture for a multi-tenant, distributed SaaS platform handling 1M+ daily data syncs and 100K+ events/sec.
Role type
Senior IC Application Security Lead (first dedicated hire)
Builds
Security frameworks for compute isolation, threat modeling, hardening, rate limiting, and abuse detection for internet-facing APIs.
Domain
SaaS / Data Infrastructure / Distributed Systems
Deliverable
production ML models | product features | infrastructure
Required skills
Threat modeling, distributed systems architecture, multi-tenant isolation, cloud security, API security, data residency controls, privacy-adjacent security
Preferred skills
Early security hire experience, building data infrastructure from scratch, bug bounty program management, pentest engagement coordination
Technologies
Multi-cloud environments, distributed data systems, internet-facing APIs
Responsibilities
Design and refine frameworks for compute isolation and perform threat modeling on new products; improve rate limiting and abuse detection for high-throughput APIs; support multi-region and multi-cloud backend expansion; own the security roadmap and identify high-leverage architectural problems.
Seniority
Senior, hands-on IC
