Senior Security Engineer

# Senior Security EngineerSigmaSan Francisco, CA and New York, New YorkFull-time$175,000 – $220,000 / yearUpload your resume once and Scout applies for youApply with ScoutShare this job:LinkedInXSave imageThis engineer will build security platforms, automation, and internal tools for Sigma’s cloud-native SaaS environment. The work spans security operations and AI/LLM security, including protections for AI applications, agents, and development workflows.* Full-time* Hybrid* 5+ years* Bachelor's or Master's Degree### Skills and expertisePythonAWSAzureGCPSIEMEDRWAFIAM### Key responsibilities* Build security platforms, services, APIs, automation, and internal tooling.* Develop security controls and monitoring for AI applications, LLM services, and agents.* Create detections, workflows, and tools for cloud, identity, and SaaS security.## How this job comparesCompared with 167 open senior security jobs on October 10, 2026.Pay: This job pays $175K to $220K a year. The 75 open senior security jobs that publish US pay start at $171K on average, so this job starts in line with them.Similar open jobs: We Love AI Jobs lists 167 open senior security jobs at 85 companies.Remote work: This job is hybrid. 42 of the 167 senior security jobs (25%) are remote.AI in this role: Medium. The role uses AI tools and works with AI systems as a regular part of the job. The role uses AI to accelerate security investigations and automation, and builds controls for AI systems. Its broader focus also covers cloud, identity, and SaaS security.## Full descriptionLocation: New York City or San Francisco - 4 days in officeAbout the RoleWe are looking for a highly technical Senior Security Engineer who thrives on building security capabilities from the ground up. This role is ideal for someone who enjoys solving complex security challenges through engineering, automation, and AI rather than relying solely on commercial tools. You will help build, scale, and continuously evolve the next generation of security capabilities across our cloud-native SaaS platform, with a strong focus on AI security, automation, and scalable security operations.We are looking for engineers who enjoy solving security problems across multiple domains rather than specializing exclusively in a single area. You will join a highly technical Security Engineering team that values innovation, ownership, and building scalable security solutions.This is a hands-on engineering role for builders, innovators, and problem-solvers who want to create security solutions that operate at scale.What You’ll DoSecurity Engineering• Design, build, and maintain security platforms, services, APIs, automation, and internal tooling.• Develop solutions that streamline Cloud vulnerability management, Network Security, Detection engineering, Incident response, access governance, and security operations.• Use software engineering principles to build detections-as-code, security workflows, internal platforms, and scalable security services that enable the organization to move faster while remaining secure.• Leverage AI extensively to accelerate investigations, automate workflows, improve decision making, and reduce operational overhead.AI & LLM Security• Design and implement security controls for AI applications, LLM-powered services, agents, and AI development workflows.• Build guardrails and security tooling to identify and mitigate risks such as prompt injection, data leakage, model misuse, excessive permissions, insecure plugins, and unsafe AI interactions.• Develop monitoring, detection, and response capabilities for AI systems and AI-generated content.• Partner with product and engineering teams to securely enable AI innovation across the organization.Identity & SaaS Security• Build and maintain detections-as-code across cloud, identity, endpoint, SaaS, and application environments.• Design and implement security controls across SaaS platforms, workforce identities, privileged access, and machine identities.• Partner with engineering teams to implement secure-by-design architectures and security best practices.• Perform architecture reviews and threat modeling for cloud services, AI-enabled applications, APIs, and infrastructure changes.Security Innovation & Automation• Continuously identify opportunities to leverage AI, automation, and modern engineering practices to solve security challenges.• Develop custom security tools, dashboards, APIs, services, and integrations.• Evaluate emerging technologies and drive adoption where they provide measurable security and operational value.What We’re Looking ForRequired Qualifications• 5+ years of Hands-on experience in Security Engineering, or related cybersecurity roles.• Bachelor or Masters in Computer Science, Cyber Security or similar roles.• Strong software engineering mindset with demonstrated experience building production-grade tools, automation, and security platforms.• Proven ability to build versus buy whenever practical and create scalable internal solutions. #J-18808-Ljbffr