Polsinelli

AI Defense Engineer

Polsinelli • $90K — $110K *
Legal & Accounting
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Foundational knowledge of ML/AI pipelines from data collection to monitoring.
  • Basic understanding of governance for enterprise AI services (SaaS/PaaS).
  • Hands-on exposure to major cloud platforms like AWS, Azure, or GCP.
  • Foundational security knowledge in areas including authentication and logging.
  • Familiarity with AI application frameworks and orchestration platforms is a plus.
  • Ability to translate risk analyses into practical technical recommendations with guidance.
  • Strong communication skills for effective collaboration across teams.

Responsibilities

  • Assist with threat modeling for AI/ML systems to identify AI-specific risks.
  • Implement and maintain security controls for AI services, including policy enforcement and abuse detection.
  • Execute adversarial tests for AI applications and document vulnerabilities.
  • Integrate AI security capabilities into existing security stacks.
  • Support incident response activities for AI systems and analyze attack patterns.
  • Collaborate with engineering and security teams, communicating technical insights clearly.
  • Contribute to AI security engineering work by translating risk into technical recommendations.

Benefits

  • A values-driven firm that fosters collaboration and respect.
  • Hybrid schedule eligibility for better work-life balance.
  • Comprehensive medical, dental, and vision insurance.
  • 401(k) plan with company match and profit-sharing options.
  • Paid time off and holidays to promote well-being.
Full Job Description
Job Description

About the Role

The AI Defense Engineer is a technical contributor who helps secure AI capabilities in a global law firm environment. Working under the guidance of the Director of Information Security and in partnership with other Information Services colleagues, this role assists with implementing practical defenses, guardrails, policy enforcement layers, monitoring and detections, adversarial testing, and secure operating practices for AI-enabled systems. The role builds experience translating emerging AI threats into actionable technical controls that help protect firm and client information while supporting responsible AI adoption.

The role supports a smart-integration, buy-before-build security strategy by assisting with the evaluation, selection, configuration, and operational use of commercial AI security solutions. This includes supporting assessments of solutions against legal-sector expectations such as matter confidentiality, ethical walls, client audit requirements, data residency constraints, and contractual information technology service obligations.

Success in this role includes supporting efficient AI tool reviews and approvals, contributing to assessments of internally developed AI solutions, and helping produce evidence of AI cybersecurity protections for audit and client-facing needs. With guidance, the AI Defense Engineer helps engineering and security teams adopt secure-by-default practices, assists with adversarial evaluations that identify issues before production, strengthens telemetry and detections for early abuse indicators, and develops knowledge of evolving AI technology and threat trends.

What You Will Be Doing
  • Threat Modeling & Risk Assessment - Assist with technical threat modeling for AI/ML systems, including neural networks, expert systems, retrieval-augmented generation, classification models, and related AI services. Help identify and document AI-specific risks, including prompt injection, data leakage, jailbreaks, unsafe autonomy, and misuse of vendor-enabled AI capabilities. Support mitigation planning by documenting recommended control configurations, reference patterns, and exception considerations for review by security and technology stakeholders.
  • AI Defense Engineering - Assist with implementing, configuring, and maintaining security controls, guardrails, and enforcement mechanisms for AI services, including input/output filters, policy enforcement layers, content safety checks, rate limiting, and abuse detection. Help monitor and investigate AI-specific attack patterns using logs, telemetry, and model signals. Work with platform and security teams to support the secure integration and operational use of enterprise AI services, including credentials, data flows, storage, and access controls across Copilot and other commercial LLM platforms.
  • Adversarial Testing & Red Teaming - Execute established adversarial test suites for AI applications, including prompt libraries, fuzzing harnesses, and automated testing tools. Simulate common attacker behaviors targeting AI endpoints and agents, document results, and help track identified issues as actionable vulnerabilities. Partner with application, product, and security teams to validate fixes, perform re-testing, and support residual risk tracking.
  • Tooling & Automation - Assist with integrating AI security capabilities into existing and future security stacks, including SIEM, SOAR, EDR, WAF, API gateways, and identity platforms.
  • Incident Response & Forensics for AI Systems - Support security incident response activities involving AI services, abuse, data exfiltration through AI systems, compromised API keys, or poisoned training data. Under guidance, review logs and model behavior to help reconstruct attack paths and identify durable fixes. Contribute to playbook and runbook improvements and post-incident technical reviews.
  • Collaboration - Collaborate with engineering, product, infrastructure, and security colleagues. Communicate technical findings, risks, and recommended remediations clearly to stakeholders. Provide implementation-focused input into AI security standards, guidelines, and procedures, with attention to vendor capability fit, maintainability, and total cost of ownership (TCO).
  • Security Improvements & Operational Readiness - Contribute to prioritized AI security engineering work by translating threat information, risk findings, and operational observations into practical technical recommendations. Participate in technical design reviews, support secure AI architecture patterns, and help ensure AI security controls are tested, documented, supportable, and ready for operational use.
  • Demonstrates a strong commitment to professionalism, delivering high-quality service, and maintaining a positive, solution-oriented ("can-do") approach. Effectively supports internal departments, external clients, and vendors through clear, courteous communication via electronic correspondence, telephone, and in-person interactions.


Required Skills

What You Will Bring to This Position
  • Foundational knowledge of ML/AI pipelines, including data collection, feature engineering, training, evaluation, deployment, and monitoring.
  • Basic understanding of how enterprise AI services (SaaS/PaaS) are deployed and governed, including data handling, routing, and isolation controls.
  • Hands-on exposure to at least one major cloud platform (AWS, Azure, or GCP) and familiarity with modern infrastructure concepts such as containers, Kubernetes, secrets management, and CI/CD.
  • Foundational security knowledge, including authentication and authorization, network security, data protection, logging and telemetry, secure software engineering practices, and vulnerability management.
  • Familiarity with one or more AI application frameworks (e.g., LangChain, Semantic Kernel, or LlamaIndex), agentic/orchestration platforms, APIs, microservices, or data platforms, a plus
  • Ability to analyze identified risks and, with guidance, translate them into practical technical recommendations such as configuration updates, controls, guardrails, and playbooks.
  • Strong written and verbal communication skills and the ability to collaborate effectively with data scientists, software engineers, and security teams.


Required Experience

  • 1+ years of experience in security engineering, application security, ML/ML Ops engineering or a related technical area.

Education
  • Bachelor's degree in computer science, information security, or related field; or equivalent work experience.

Why Join Us?
  • A values-driven firm that fosters collaboration and respect
  • This position is eligible for a Hybrid Schedule
  • Medical, dental, and vision insurance
  • 401(k) with company match and profit-sharing options
  • Paid time off and holidays
  • For additional information about our benefits, please click here

About Polsinelli

Polsinelli is an Am Law 100 firm with more than 1,000 attorneys in over 20 offices nationwide. Recognized by legal research firm BTI Consulting as one of the top firms for excellent client service and client relationships, Polsinelli attorneys provide value through practical legal counsel infused with business insight and focus on health care, real estate, finance, technology, private equity and corporate transactions. www.polsinelli.com | Polsinelli PC | Polsinelli LLP in California
Learn more about Polsinelli
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Founded
1972

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