Security specialist (Microsoft)

Your mission

Working where almost no one works: at the heart of European defense technology

Few companies are as involved in defense and security as NUNC. We invest in groundbreaking technology, from AI and quantum to electronic warfare and unmanned systems. Our companies are building a stronger, more technologically independent Europe. This is no standard IT environment: here, you work on securing technology that matters.

Your role as Security Specialist:

You will be the guardian of IT security for NUNC and for our portfolio companies (OpCos), every one of them operating in a field where security isn’t optional but foundational. From within Security, we are also building external client relationships around IT security that must meet defense requirements. It’s a market where trust is everything, and where our experience over the past years has earned us a reputation as a reliable partner. You’ll help us strengthen that position even further. You’ll work on a secure, scalable, and future-proof IT environment, and you’ll have the freedom to decide what that takes.

What will you do?

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

About NUNC

NUNC 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!

Application procedure

1. Introduction: You start with an introductory conversation with our Recruiter or Head of People.
2. Online assessment: You then complete an online assessment via Equalture.
3. Interviews: You then have at least two conversations with Managing Partners and future colleagues.
4. Offer: Are we both enthusiastic? Then you'll receive a fitting offer.
5. Screening: Integrity and reliability are very important to NUNC. A pre-employment screening is therefore part of our application procedure, including at minimum a Certificate of Conduct (VOG) and a DISA screening.

After each step, you'll receive feedback as quickly as possible, so you always know where you stand. Apply soon! If we receive enough suitable applications, this vacancy may close earlier than planned.

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