IT Security Lead

NUNC Capital; Amsterdam; Hybrid; EUR 56,000 - 67,000; Full time

Benefits offered by this job

Gross monthly salary €5,000–€6,000

8% holiday allowance

25 vacation days

Pension plan via Allianz

ClassPass subscription

Lunch provided

Laptop and phone

Training budget €2,500 per year

Job summary

NUNC Capital in Amsterdam is seeking an IT Security Lead to own and strengthen our security function across portfolio companies. You’ll drive security strategy, implement controls, and lead ISO 27001 initiatives with a focus on cost efficiency and proactive risk management.

You will collaborate with the Tech Program Manager, external partners, and portfolio IT contacts to deliver secure, scalable, and future-proof solutions in a fast-paced, multi-stakeholder environment.

Qualifications

• In-depth knowledge of Microsoft security tooling and platforms.
• Experience with security strategy across multiple organizations.
• Experience with ISO 27001.
• Fluent in Dutch and English.

Responsibilities

• Own and continuously develop the Microsoft security stack and strategy.
• Advise on and implement security controls for applications and infrastructure, focusing on Microsoft & Windows.
• Design, implement, and optimize security strategies.
• Conduct and support information security risk analyses, including third-party assessments.
• Identify security gaps and translate risks into concrete technical solutions.
• Lead security projects end-to-end with cost efficiency as a starting point.

Skills

Microsoft security tooling

Security strategy

ISO 27001 experience

Dutch and English fluency

Tools

Defender

Entra ID

Purview

Intune

Sentinel

Job description

Your mission

NUNC Capital builds, acquires, and grows companies. We focus on groundbreaking defense and dual-use technologies. We do this independently and with a strategic horizon.

Your mission

NUNC Capital builds, acquires, and grows companies. We focus on groundbreaking defense and dual-use technologies. We do this independently and with a strategic horizon.

Since 2013, our international portfolio of companies has been growing. Every company in it deserves to operate safely, in an IT environment that keeps pace with tomorrow's ambitions and risks.

As IT Security Lead, you are responsible for the security and resilience of NUNC and all our portfolio companies. You won't be taking over an existing role, instead, you'll build and strengthen our security function from a position with a lot of freedom and responsibility. You'll work directly with our Tech Program Manager, our external IT partners, and the IT contacts at each portfolio company.

You have deep, up-to-date knowledge of the Microsoft security landscape and genuinely keep your market knowledge current. It's a plus if you can read and understand code, and test configurations yourself. Ensuring our security is fully in order at all times is simply non-negotiable for you.

You work in a project-based way: you implement and set up new tools and processes, always with an eye on efficiency and reducing dependency on external costs. We have an external partner for day-to-day support and management of our environment, but for new initiatives and strategic decisions, you're the one who drives this internally.

Specifically, you will be working on:

• Ownership of and continuous development of our Microsoft security stack and strategy
• Advising on and implementing security controls for applications and infrastructure, with a focus on Microsoft & Windows
• Designing, implementing, and optimizing security strategies
• Conducting and supporting information security risk analyses, including assessments of third parties regarding security and data privacy
• Identifying security gaps, translating risks into concrete technical solutions, and supporting their resolution
• Assessing and improving the effectiveness of technical and organizational security measures
• Advising teams on secure design principles, application integrity, and best practices within modern security architectures
• Running security and IT projects end-to-end, from scoping to implementation, with cost efficiency as a starting point
• Acting as a credible, technically knowledgeable conversation partner for senior developers and other MSPs, translating complex technical input into clear next steps
• Driving the continuous improvement process for ISO 27001 and leading the rollout of ABRO per project, providing security expertise currently lacking at the OpCo level
• Setting up proper data governance and documentation labeling (for example via Microsoft Purview), including the security dimension
• Contributing to innovation and new security propositions, including our approach to AI, with an eye toward a better user experience

Your profile

You make a difference with a strong, confident personality: you hold your own with demanding technical stakeholders and OpCos with outspoken opinions. You're analytically strong and quickly get to the core of things, even with complex technical issues.

You also have a proactive, forward-thinking mindset when it comes to security, and increasingly when it comes to AI as well. You're a credible conversation partner for senior developers and other MSPs, and you translate complex technical input into clear next steps with ease. You take initiative, work in a structured, project-based way, and feel comfortable in a role with a lot of responsibility and many stakeholders. You always keep cost efficiency sharply in view.

Requirements

• In-depth, practical knowledge of Microsoft security tooling (e.g., Defender, Entra ID, Purview, Intune, Sentinel)
• Experience with security strategy across multiple organizations or business units
• Experience with ISO 27001
• Fluent in both Dutch and English

Nice-to-haves

• Ability to read code yourself and test configurations
• Experience configuring within Linux and macOS environments
• Experience with frameworks such as ABRO

Why us?

What do we offer?

• A gross monthly salary of €5,000 to €6,000 (based on 40 hours)
• 8% holiday allowance
• 25 vacation days
• Pension plan via Allianz
• ClassPass subscription
• A prepared lunch daily
• Laptop and phone
• Training budget of €2,500 per year

About NUNC Capital

NUNC Capital is a Dutch investment company, founded in 2013, specializing in innovative technology for the defense and security sector.

We don't just invest in companies, we actively help build their growth. With our knowledge, sector experience, international network, and entrepreneurship, we help companies develop, position, and scale technology that contributes to a stronger, safer, and more technologically independent Europe.

Our portfolio is active in areas including:

• Artificial Intelligence (AI)
• Quantum technology
• Electronic Warfare
• Advanced Materials
• Unmanned systems
• New energy technologies

Interested

We'd love to get to know you!