# Application Security Lead

**Company:** [Hightouch](https://hotfix.jobs/companies/hightouch)
**Location:** Remote
**Role:** Security Engineering
**Skills:** Multi-Tenant Isolation, Authorization, Threat Modeling, Rate Limiting, Abuse Detection, Access Control, Cloud Security, Multi-Cloud, Multi-Region, Distributed Systems, Data Residency, Pii Handling, GDPR, CCPA, Kubernetes
**Posted:** 2026-04-27

> Hands-on Application Security Lead owning security posture for a scaling SaaS platform. Focuses on multi-tenant isolation, threat modeling, API security, and multi-cloud architecture in distributed systems. Requires early security hire experience at SaaS/data infra companies with deep systems expertise.

## Job Description

## Responsibilities
- Own Hightouch's application security posture end-to-end.
- Solve security problems in distributed systems: multi-tenant isolation (~1M data syncs/day, 100K+ events/sec), sub-tenant access control, security architecture (compute isolation, threat modeling, hardening new products).
- Improve internet-facing APIs: rate limiting, abuse detection, granular access control.
- Support multi-region/multi-cloud backend, extend to new regions for data residency.
- Own roadmap: identify highest-leverage problems and fix them (hands-on in codebase).

## Requirements
- Early security hire (first 1-3) at SaaS/data infrastructure company.
- Securing multi-tenant platforms: tenant isolation, authorization models.
- Cloud security across multiple clouds, customer-owned accounts.
- Designed/built data infrastructure as early engineer, securing from design/redesigns.
- Privacy-adjacent security: PII handling, data residency, GDPR/CCPA controls.
- Read application code, threat model distributed systems, ship production fixes.
- Significant distributed systems expertise.

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**Apply:** https://hotfix.jobs/jobs/c352a181-77e4-479f-be20-50cb24f92a01
**Canonical:** https://hotfix.jobs/jobs/c352a181-77e4-479f-be20-50cb24f92a01