Senior Security Engineer (AI Focus)

Format: remote, full-time, long-term contract
Rate: $25–35/h (contractor, net)
Hours: strong overlap with US Eastern / Central business hours Client: North American SaaS company serving the public sector (procurement, budgeting, payments, grants), 3,600+ organizations

About the role The company is expanding its AI/ML product line: AI-powered features, intelligent automation, agentic pipelines and LLM integrations. You will join the Security Engineering team and own AI security end-to-end, from threat modeling agentic systems to defining secure development practices that engineering teams follow.

What you will do

• Own AI security projects from concept to delivery across the AI/ML lifecycle
• Assess and mitigate AI-specific risks: prompt injection, data poisoning, model integrity, adversarial attacks, agentic AI threats
• Evaluate and secure agentic AI systems: multi-agent architectures, tool use, autonomous pipelines
• Build and maintain security tooling, automation and controls across AI/ML pipelines and infrastructure
• Define secure AI development practices across the SDLC with Architecture, Product, Platform, DevOps and IT
• Contribute to AI governance: policies, risk assessments, responsible AI frameworks
• Write technical security documentation for AI systems

Requirements

• 6+ years in security engineering / architecture in a SaaS environment
• Strong AppSec and security architecture for microservice, cloud-native and serverless applications
• Security tooling and automation built as code; GitOps and continuous security and compliance
• Hands-on experience securing AI/ML or LLM-based systems
• Familiarity with OWASP LLM Top 10, MITRE ATLAS, NIST AI RMF, EU AI Act
• Understanding of agentic AI risks: autonomous agents, tool orchestration, memory, multi-agent coordination
• English C1: you will lead security initiatives with US teams and write policies

Nice to have

• LLM security, model red-teaming, AI threat modeling
• Securing agents built with LangChain, AutoGen or CrewAI
• AI governance programs, risk registers, responsible AI policies
• Certifications: ISC2 AI Security, CISSP, CCSP, CSSLP