AI Security Specialist – Microsoft Copilot Backend & 3rd Level Support Planck Technologies Bonding Science and People

Planck; Lisboa; On-site; 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

About Us

Planck Technologies is a company specialized in Software Development, dedicated to shaping futures and creating value through innovative IT solutions. By expanding teams and offering a comprehensive range of services — from Software Development and Infrastructure Management to Cybersecurity — we empower clients with all the expertise they need in one place. Inspired by the principles of quantum physics, we push beyond traditional boundaries to deliver customized solutions that redefine the IT landscape and drive shared success.

About the job

What are we looking for?

We are looking for an AI Security Specialist to ensure the secure operation of Microsoft Copilot, covering identity, access management, data flows and integrations, while operating within advanced Microsoft cloud environments.

Requirements:

• 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.

Working Model:

• Hybrid – 1 to 2 days/week at the client’s location, in a region near Lisbon.

Be part of a company that is redefining the future through technology!

We are looking forward to hearing from you! Be part of a company that is redefining the future through technology!

NOTE: In accordance with the EU General Data Protection Regulation No. 2016/679, we inform you that by responding to this advertisement, you consent to the use of your data by Planck Technologies for as long as necessary. If you have any questions or would like to request the deletion of your personal data, please send an email to [e-mail].