Copilot AI Security Engineer (Microsoft 365 & Azure)

Planck; Lisboa; Hybrid; EUR 70,000 - 100,000; Full time

Job summary

Planck Technologies is seeking an AI Security Specialist to ensure secure operation of Microsoft Copilot, covering identity, access management, data flows and integrations within advanced Microsoft cloud environments. Hybrid work model near Lisbon.

You will perform security assessments, design protective architectures, and lead red-team testing to safeguard Copilot workloads and workflows. Fluent English and Portuguese are required along with strong Microsoft security expertise.

Qualifications

• 5+ years of experience in Cybersecurity.
• 3+ years of experience with Microsoft 365 and Azure security.
• Strong background in Cybersecurity within Microsoft ecosystems.
• Advanced knowledge of Microsoft Defender, Entra ID (Azure AD), Conditional Access and Zero Trust.
• Hands-on experience with threat modeling, security testing and red-team activities.
• Practical programming/scripting experience with PowerShell, Python or C#.
• Bachelor’s degree in Computer Science, Cybersecurity, Information Technology or a related field.
• Security certifications (e.g. Microsoft Security, Azure Security, AZ-500, CISSP) are highly valued.
• Fluent English (spoken and written)
• Advanced Portuguese (spoken and written)
• A Master’s degree in Cybersecurity or Information Security is a plus.

Responsibilities

• Perform regular security assessments of Microsoft Copilot deployments.
• Identify and mitigate threats such as prompt injections, model tampering and data poisoning.
• Design and implement security architecture and hardening for Copilot workloads.
• Develop threat models and conduct controlled security and red‑team testing.
• Build monitoring frameworks and lead incident detection and response.
• Act as 3rd level support, resolving complex security, performance and usage issues.
• Define security policies, controls and operational guardrails for Copilot usage.
• Assess the security of custom Copilot plugins and third‑party integrations.
• Analyze data flows, validating encryption and protection mechanisms.
• Enable support teams through documentation, training, guardrails and escalation standards.

Skills

Fluent English

Advanced Portuguese

PowerShell

Python

C#

Microsoft Defender

Entra ID / Azure AD

Conditional Access

Zero Trust

Threat modeling

Security testing

Red-team

Education

Bachelor’s degree in Computer Science / Cybersecurity / Information Technology

Master’s degree in Cybersecurity or Information Security (plus)

Security certifications (e.g. Microsoft Security, Azure Security, AZ-500, CISSP)

Tools

Microsoft Defender

Entra ID / Azure AD

Conditional Access

Job description

Planck Technologies is seeking an AI Security Specialist to ensure secure operation of Microsoft Copilot, covering identity, access management, data flows and integrations within advanced Microsoft cloud environments. Hybrid work model near Lisbon.

You will perform security assessments, design protective architectures, and lead red-team testing to safeguard Copilot workloads and workflows. Fluent English and Portuguese are required along with strong Microsoft security expertise.