Ensemble Health Partners

Principal Architect

Ensemble Health Partners$148K — $223K *
US-AnywhereRemote in United States
Information Technology
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • 12+ years in information security; 5+ years in cloud/platform architecture.
  • Hands-on expertise in securing ML/AI systems and infrastructure.
  • Experience with AI-specific threats like adversarial ML and data poisoning.
  • Proficient in cloud security on platforms like AWS, Azure, or GCP.
  • Strong knowledge in application security and secure software development lifecycle.
  • Proven leadership in architectural decision-making at scale.
  • Excellent communication skills for diverse audiences.

Responsibilities

  • Define security architecture for AI/ML systems including pipelines and APIs.
  • Develop threat models for AI-specific attack surfaces.
  • Lead design reviews to ensure secure AI development standards.
  • Own the AI security roadmap aligning with product and compliance goals.
  • Serve as a technical authority for AI security decisions.
  • Embed security controls throughout the AI model lifecycle with ML engineers.
  • Translate AI regulations into actionable architectural requirements.

Benefits

  • Remote work flexibility with travel requirements as needed.
  • Innovative work environment focused on improving processes and client experiences.
Full Job Description
The Opportunity:

About the Role

As Principal Architect for AI Security, you will define and lead the security architecture strategy for our AI platform, products, and infrastructure. This is a rare opportunity to shape how a fast-moving organization thinks about security at the intersection of machine learning, cloud infrastructure, and product delivery. You will operate as a technical authority - influencing roadmap, mentoring senior engineers, and partnering with leadership to ensure our AI systems are trustworthy, resilient, and defensible.

What You'll Do

Architecture & Strategy
  • Define the end-to-end security architecture for AI/ML systems, including training pipelines, inference infrastructure, model storage, and APIs.
  • Develop and maintain a threat model for AI-specific attack surfaces: model poisoning, adversarial inputs, prompt injection, model inversion, and supply chain risks.
  • Lead design reviews for high-impact systems, setting standards for secure-by-default AI development.
  • Own the AI security roadmap, aligning it with product goals, compliance requirements, and industry best practices.


Technical Leadership
  • Serve as an authority on AI security decisions across engineering, product, and research teams.
  • Partner with ML engineers to embed security controls throughout the model lifecycle - from data ingestion to deployment and monitoring.
  • Drive adoption of zero-trust principles, least-privilege access, and defense-in-depth across AI infrastructure.


Governance & Compliance
  • Translate evolving AI-specific regulations (NIST AI RMF) into actionable architectural requirements.
  • Partner with legal, privacy, and compliance teams to ensure AI systems meet internal policies and external obligations.
  • Produce executive-ready security assessments, risk summaries, and mitigation plans.


Cross-Functional Collaboration
  • Act as a bridge between security, platform engineering, data science, and product management.
  • Represent the organization in external forums, customer security reviews, and industry working groups.
  • Contribute to open-source tooling, publications, or speaking engagements to build the organization's credibility in AI security.


What You'll Bring

  • 12+ years of experience in information security, with at least 5 years focused on cloud or platform architecture.
  • Deep hands-on expertise in securing ML/AI systems, including LLMs, training pipelines, and model serving infrastructure.
  • Demonstrated experience with AI-specific threat vectors: adversarial ML, data poisoning, model extraction, and prompt injection.
  • Proficiency in cloud security (AWS, Azure, or GCP) including IAM, network segmentation, secrets management, and audit logging.
  • Strong background in application security, cryptography, and secure software development lifecycle (SSDLC).
  • Experience leading architectural decisions in a large-scale engineering organization.
  • Excellent written and verbal communication - you can explain complex security risks to both engineers and executives.


Preferred
  • Familiarity with AI governance frameworks: NIST AI RMF
  • Relevant certifications such as CISSP, CCSP, or cloud security specializations.
  • Published research, conference talks, or open-source contributions in AI/ML security.


Additional Information
  • This position pays between $148,800 - 223,200 based on experience and geographical location.
  • Must be inquisitive and demonstrate openness to innovation including AI to explore better processes and ways to alleviate friction and improve patient and client experiences.
  • This is a remote position; however, candidates must be willing and able to travel to and work onsite at client, temporary, or corporate office locations as business needs require.


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