# Senior Application Security Engineer

**Company:** [Tatari](https://hotfix.jobs/companies/tatari)
**Location:** Los Angeles, CA, New York, NY, San Francisco, CA
**Role:** Security Engineering
**Salary:** $165k – $190k/yr
**Experience:** 5+ years
**Skills:** Python, Java, Rust, AWS, Kubernetes, SAST, DAST, Sca, CI/CD, Threat Modeling, Owasp Top 10, Api Security, Llm Security
**Posted:** 2026-06-04

> First dedicated AppSec Engineer defining security architecture for a SaaS TV advertising platform. Build security tooling, own SAST/DAST/SCA, conduct threat modeling, and partner with engineering teams on secure development practices.

## Job Description

## Responsibilities
- Design and execute greenfield AppSec initiatives across Tatari's SaaS platform from threat modeling to remediation
- Build and maintain security automation integrated into CI/CD pipelines and manage software supply chain risk
- Own container security across build and runtime
- Develop internal tooling and libraries that make secure coding easier for application engineers
- Own SAST/DAST/SCA tooling: selection, tuning, CI/CD integration, and triage
- Conduct application security reviews and threat models for new features and architectural changes
- Identify and remediate vulnerabilities across APIs, services, and data pipelines
- Partner with Engineering teams to establish secure coding standards and provide hands-on guidance
- Assess and mitigate LLM-introduced risks in product features
- Integrate agentic tooling into AppSec workflows to reduce toil
- Contribute to security incident response when application-layer issues are involved

## Requirements
- Production Python experience with the engineering depth to review code meaningfully and build security tooling; Java or Rust is a bonus
- Significant hands-on application security experience, ideally at a SaaS company, including working knowledge of established standards (OWASP Top 10, API Security Top 10, ASVS, SPVS, AISVS) and how common vulnerability classes manifest in production systems
- Threat modeling experience with Product and Engineering teams
- Experience building security tooling or automation (scripts, pipelines, libraries)
- Familiarity with AWS and Kubernetes security controls as they relate to application-layer risks
- Working knowledge of how LLMs introduce new attack surfaces and how to mitigate them, with practical experience using AI tools in security or engineering workflows
- Demonstrated experience reviewing API designs and implementations for auth anti-patterns, token mismanagement, injection risks, and sensitive data exposure
- Track record embedding with Engineering teams: code review, design consultation, and standards definition
- Experience building or maturing an AppSec program where coverage, tooling, or process needed to be defined from scratch

## Benefits
- Total compensation ($165,000-$190,000)
- Equity compensation
- Health insurance coverage for you and your dependents
- 401K, FSA, and commuter benefits
- $150 monthly spending account
- $1,000 annual continued education benefit
- $500 Newbie Productivity Perk
- Unlimited PTO and sick days
- Monthly Company Wellness Day Off
- Snacks, drinks, and catered lunches at the office
- Team building events
- Hybrid RTO of 2 days per week in office

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