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Senior / Staff Application Security Engineer

Suno· Engineering
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Boston, NYC, Los Angeles, San Francisco$230k - $330kFull-timePosted 2mo ago

About the role

Senior / Staff Application Security Engineer to own Suno's security of product development, threat-modeling, hardening application layer, and building AppSec practices from the ground up.

Responsibilities

  • Execute application security end to end: threat-model features and services, and drive remediation of the most significant risks.
  • Secure the application layer against the vulnerabilities that matter most — injection, broken authentication and authorization, and insecure APIs.
  • Build and run a secure SDLC: code-review guardrails, SAST/DAST, dependency and supply-chain security, secrets management, and pre-production testing.
  • Harden authentication, authorization, and session/identity handling across the product.
  • Secure the AI-specific application surface — model and inference endpoints, prompt and input handling, and the new classes of vulnerability that come with shipping generative features.
  • Partner with product and platform engineering to design security in early and raise the security bar across the codebase.
  • Set the standard for how engineering reasons about and ships secure code.

Qualifications

  • 6+ years in security engineering with deep, hands-on application-security expertise.
  • Strong command of the vulnerability classes that cause incidents and how to eliminate them at the source — code, API, and authz design.
  • A builder who has stood up AppSec practices and secure-SDLC tooling, not only operated established ones.
  • Fluent in modern application stacks and comfortable in AWS.
  • Able to work shoulder-to-shoulder with engineers and raise the bar without becoming a blocker.
  • Able to write and ship production-quality code, not only review it.
  • Curiosity about emerging AI/LLM threat classes and how to defend against them as the product evolves.
  • Nice to have: Consumer product at scale, secure-by-design work on generative-AI or ML product surfaces, and/or early security-hire experience.

Skills

Required:Application securityThreat modelingSecure SDLCAWSCollaboration with engineersProduction-quality coding

Benefits

  • Company Equity Package
  • 401(k) with 3% Employer Match & Roth 401(k)
  • Medical, Dental, & Vision Insurance (PPO w/ HSA & FSA options)
  • 11 Paid Holidays + Unlimited PTO & Sick Time
  • 16 Weeks of Paid Parental Leave
  • Creative Education Stipend
  • Generous Commuter Allowance
  • In-Office Lunch (5 days per week)
Last updated Oct 8, 2026. Interested? Apply on the company site.

About Suno

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