JC0145 - Expert Consultant - Senior

Freelancer Opportunity

Job title: Chief Information Security Officer - Customer facing

Job location: Brussels (twice/week)

Job duration: 2026-03-01 to 2026-12-31

Job weekly hours: 40 hrs./week

Job salary range: 850 to 900/euros a day

Languages required: NL/EN or FR/EN

About Proximus NXT:

Proximus NXT is the reference in the Benelux in the field of Cyber Security. You will find yourself in an environment where security is not a side issue, but core business. You will become part of a powerful ecosystem: a team of top experts, ranging from strategic profiles to operational experts, supported by an enormously broad security portfolio. With us, you are never alone.

Your role:

The strategic guide for our customers as a customer-facing CISO, you are the strategic conscience and trusted advisor of our customers. You are not operating the controls yourself, but you help determine the course. You translate complex cyber threats into clear board-level language and help think about how cyber security can support our customers' business strategy.

Whether it concerns a managed security service, a CISO or GRC-as-a-Service role, or consultancy: you ensure that our customers are relieved of their concerns as much as possible in a constantly evolving security landscape. The technical implementation, for that, you seamlessly coordinate with our specialized security teams and Managed Services.

What will you do

Strategy & Roadmap

You develop and implement a cyber security policy that fits the customer's DNA.

You outline clear long-term roadmaps.

You translate abstract strategy into tactical action plans and supervise the execution.

High-Level Governance

You are the sparring partner at C-level and participate in board meetings and risk committees.

You set up the security governance (who does what, how do we report?) and ensure cohesion between security, privacy, and business continuity.

Risk Management & Compliance

You initiate risk analyses (IT, OT, IoT) and make risks understandable for management.

You guide customers through the landscape of laws and regulations (such as NIS2) and prepare them for audits and ISO certifications.

Management of security incidents & Services

In the event of serious incidents, you maintain oversight and calm. You coordinate the crisis communication while our operational teams close the leak.

You advise customers on the optimal use of (our) SOC and monitoring services, and other security services.

Impact & Communication

You increase security awareness within the organization and present clear reports on risks and maturity.

You are the face of security: the central point of contact for all stakeholders.

Who are you?

You are a bridge builder. You combine in-depth substantive knowledge with the diplomatic skills of a top consultant.

Background & Knowledge

Academic working and thinking level.

Expertise in GRC (Governance, Risk & Compliance) and frameworks such as ISO 27001, NIST, and CIS.

Strong knowledge of legislation (including NIS2, GDPR) and IT Service Management (ITIL).

Experience with ICT architectures is a must; knowledge of OT/ICS and IoT is a strong advantage.

Personality & Skills

Strategic thinker: You quickly fathom organizations and immediately see where the vulnerabilities and opportunities lie.

Strong communicator: You speak the language of the board and the language of the engineer. You present persuasively and write clearly.

Diplomatic & Steadfast: You can handle resistance, dare to push back when necessary, and remain independent in your advice.

Connector: You enjoy collaborating with our sales, architects, and engineers to build the best solution for the customer.

Why choose this role at Proximus NXT?

Impact: You work for leading customers and have a direct influence on their resilience.

Support: You stand on the shoulders of a gigantic organization with deep technical expertise.

Growth: You continuously learn by collaborating with the best specialists in the market.

Apply now and start your journey with Team Possible! We want to get to know you.

After your application, we will verify your profile and get back to you within 3

working days.

If you’re successful, you can expect the following steps:

An initial conversation with our recruiter - Swati Kumari

Interview with the Hiring Manager and the team.

Final decision

About Proximus

We are Team Possible turning tech into opportunities.

We are driven by four core pillars: "I care," "I make a difference," "I radically simplify," and "I embrace the future". This means you'll join a team that genuinely cares for customers and colleagues, is empowered to make a real impact, strives to radically simplify complex challenges, and is always looking ahead to embrace the future of technology. We believe in an inclusive and safe environment where everyone can thrive, offering extensive career development resources, including access to over 5,000 training modules and a minimum of 5 days of training per year, to help you continuously learn, grow, and tackle bold challenges with us.