Helena Duarte
Senior AI Security Engineer
Coimbra, Portugal · Europe/Lisbon (UTC+1) · 9 years of experience
Helena focuses on securing AI applications, data paths, model supply chains, and agent permissions.
Request a shortlistWhy this profile fits
AI-specific threat modeling
Covers prompt injection, sensitive-data exposure, unsafe tool use, model supply chains, and excessive agency.
Least-privilege architecture
Scopes identities, tools, data access, secrets, and network paths to the minimum required for each workload.
Adversarial validation
Turns abuse cases and incidents into repeatable tests, monitoring signals, and response playbooks.
Relevant toolkit
Kubernetes SecurityLLM Red TeamingSIEMDelivery evidence
Selected work
Private Clinical Retrieval Gateway
healthcare dataDesigned and delivered a AI security programme focused on privacy-preserving AI systems; deployed PHI-safe retrieval controls with tested tenant and purpose boundaries. The release included threat models, least-privilege controls, adversarial tests, logging, and incident playbooks mapped to OWASP guidance.
Sensitive Data Leakage Evaluator
healthcare data operationsBuilt the supporting control and measurement layer for the primary system, covering review queues, regression checks, operational visibility, and a documented handoff to the owning team.
Relevant experience
Career timeline
Senior AI Security Engineer
2023–PresentDevlyn client assignments · Remote
- Led privacy-preserving AI systems delivery for a healthcare data team and deployed PHI-safe retrieval controls with tested tenant and purpose boundaries.
AI Security Engineer
2017–2022healthcare data product company (confidential) · Coimbra, Portugal
- Built production systems in healthcare data, with increasing ownership of reliability, testing, and stakeholder delivery.
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Skill depth
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Relevant experience by skill
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Languages
Frameworks
Tools
Platforms
Storage
Paradigms
Credentials
Certifications
Certified Kubernetes Security Specialist
Cloud Native Computing Foundation · 2023 · Certified
Certified Secure Software Lifecycle Professional
ISC2 · 2026 · Certified
Communication
Languages
English
Fluent
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