NasuniHiring

Senior Security Engineer, Application Security

  • Remote, United States
  • Senior
  • Posted 2 days ago
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In one line

Hands-on application security and penetration testing role across web apps, APIs, cloud services and AI features. Remote in the United States.

About the role

The security team protects a portfolio of enterprise data infrastructure and SaaS products. Work covers threat modeling, manual testing and retesting fixes, with room to improve automated scanning and CI/CD security workflows.

At a glance

Pay
Not stated in the posting
Remote scope
Remote, United States
Seniority
Senior
Skills
Application Security, Penetration Testing, OWASP, SAST, SCA, Kubernetes, Linux, SBOM
Posted
2 Nov 2026
Last checked
3 Nov 2026

What you will do

  • Run threat modeling, secure design reviews and targeted code reviews for web apps, APIs, cloud services and appliances
  • Perform manual and tool-assisted penetration tests, document reproducible findings and verify fixes
  • Coordinate external pen test scoping, report review, remediation tracking and retesting
  • Validate customer-reported vulnerabilities and advise Engineering on priorities
  • Assess AI-enabled features for access-control gaps, prompt injection and data exposure

What they look for

  • About five or more years in security engineering with substantial AppSec or pen testing work
  • Demonstrated manual testing of web apps and APIs, including authentication and authorisation issues
  • Experience with threat modeling, secure code review and remediation retesting
  • Familiarity with OWASP guidance, security testing tools and SDLC controls
  • Ability to read code and automate tasks in a scripting or programming language

Nice to have

  • Enterprise SaaS, hybrid-cloud or appliance security experience
  • SBOM, CycloneDX or SPDX and CI/CD tooling experience
  • LLM or agentic feature testing, M&An assessments or audit evidence work
  • OSCP, GWAPT, GPEN, GWEB or CSSLP certification

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Claude

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Connector URL
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ChatGPT

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Connector URL
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Muse

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Message for Muse
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Muse is available in the US only for now.

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Questions about this job

Is this job fully remote, and from where?

The posting lists it as remote for people in the United States.

What does this job pay?

No pay range is stated in the posting.

What experience is needed?

It is a senior role. The posting asks for: about five or more years in security engineering with substantial AppSec or pen testing work; demonstrated manual testing of web apps and APIs, including authentication and authorisation issues; experience with threat modeling, secure code review and remediation retesting. Skills it names include Application Security, Penetration Testing, OWASP, SAST.

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