Senior Security Engineer II, Application Security (Remote Eligible)
About The Position
For over 20 years, Smartsheet has helped people and teams achieve–well, anything. From seamless work management to smart, scalable solutions, we’ve always worked with flow. We’re building tools that empower teams to automate the manual, uncover insights, and scale smarter. But more than that, we’re creating space– space to think big, take action, and unlock the kind of work that truly matters. Because when challenge meets purpose, and passion turns into progress, that’s magic at work, and it’s what we show up for everyday. AI is changing what application security can accomplish. We're not just securing AI; we're using it as a force multiplier to see more risk, act faster, and scale security across a platform used by millions of customers globally. We're looking for a Senior Security Engineer II to join our Application Security team who can do both: bring deep expertise in securing AI-integrated systems, and deploy AI and automation to drive risk visibility and reduction at a scale no traditional security program can match on its own. This is a high-ownership, technically demanding role for an experienced application security engineer. You will work at the intersection of threat-informed design, engineering automation, and applied AI, doing consequential security work that directly shapes the posture of a modern SaaS platform. If you're a security engineer who writes code to solve security problems, can read a production codebase to find what a scanner misses, and wants your work to matter beyond a ticket queue, we want to talk. You will report to the Manager, Application Security , based in our Bellevue, WA office, or you may work remotely from anywhere in the US where Smartsheet is a registered employer.
Requirements
- 8+ years in application security, with a track record of owning complex, multi-capability work in a product security or AppSec engineering role.
- Fluent in one or more modern languages (Java, Python, TypeScript/JavaScript, Go, Ruby, or equivalent); you identify security-relevant patterns without relying on tooling and write automation that others adopt.
- Hands-on experience securing AI-integrated applications (LLM systems, agentic workflows, model APIs) and demonstrated experience deploying AI and automation to scale security functions or extend team reach. You bring both skill sets.
- Threat modeling, architecture review, and code review for complex SaaS features; you produce findings engineering teams can act on and carry enough technical credibility to influence design decisions, not just document them.
- Independent, hands-on validation of complex, multi-step authenticated vulnerabilities; you confirm what scanners flag and find what they miss.
- Operator, active researcher, or both; direct experience with triage, severity calibration, and researcher communication.
- Working knowledge of SAST, SCA, secrets, and IaC scanning in modern pipelines, with experience engaging teams on findings and improving signal quality.
- Working knowledge of AWS, GCP, or Azure sufficient to tie application-layer risk to the infrastructure it runs on; you understand where the application ends and the cloud begins.
- Legally eligible to work in the U.S. on an ongoing basis
- BS or MS in Computer Science, a related field, or equivalent industry experience
Nice To Haves
- Experience with agentic security, MCP security, or adversarial evaluation of autonomous AI systems.
- GitLab CI/CD experience, including security policy pipeline configuration and scanning job integration.
- Active bug bounty researcher with published findings, CVE credits, or hall of fame recognition.
- Penetration testing program management experience: scope definition, vendor coordination, and finding validation with third-party testers.
Responsibilities
- Conduct security reviews and threat modeling of AI-integrated product features (LLM workflows, agentic pipelines, model APIs) with working knowledge of AI-specific risk classes including prompt injection, model manipulation, and runtime control gaps; and in parallel, deploy AI and automation as a force multiplier by building tooling, pipelines, and integrations that extend the team's reach, accelerate triage, and drive risk visibility at a scale manual effort alone cannot achieve.
- Own end-to-end security assessments for high-risk features and services (threat modeling, architecture review, targeted code review, and security testing) embedded in the product development lifecycle. Work directly with engineering teams to surface and close risk before it ships, with enough technical credibility to influence design decisions, not just document findings.
- Operate and evolve the security scanning controls embedded in Smartsheet's GitLab pipelines (SAST, SCA, secrets, IaC scanning). Tune tools, engage teams on findings, and build automation that reduces false positive burden and improves how developers experience security feedback.
- Serve as the expert validation layer for Smartsheet's bug bounty program, reproducing and assessing complex, multi-step researcher submissions requiring authenticated context and deep platform knowledge, making defensible severity and payout decisions, and owning program operations including researcher engagement, metrics, and continuous improvement.
Benefits
- Employer subsidized medical/vision and dental coverage for full-time employees
- 401k Match to help you save for your future (50% of your contribution up to the first 6% of your eligible pay)
- Monthly stipend to support your work and productivity
- Flexible Time Away Program, plus Sick Time Off
- US employees are automatically covered under Smartsheet-sponsored life insurance, short-term, and long-term disability plans
- US employees receive 12 paid holidays per year
- Up to 24 weeks of Parental Leave
- Personal paid Volunteer Day to support our community
- Opportunities for professional growth and development including access to Udemy online courses
- Company Funded Perks, including a counseling membership, local retail discounts, and your own personal Smartsheet account
- Teleworking options from any registered location in the U.S. (role specific)
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What This Job Offers
Job Type
Full-time
Career Level
Senior
