Is this you?

Skills that will come in handy in this job.

You're analytically minded

Main or side issue? You see the difference at once. You get to the heart of matters with ease while maintaining an overall view.

You're part of the team

You're a sociable person and go out of your way to help your colleagues, even if it means setting your own interests aside.

You always find a solution

You turn problems into possibilities. You investigate them thoroughly and have a knack for exposing possible causes.

You're in control

Objectives exist to be achieved; you make it happen. You make realistic plans, delegate responsibilities and maintain the broad view.

You take the initiative

Wait and see? That's not your style. When a choice is needed, you decide fast and smart.

You communicate clearly

When you say something, you make sure others understand. Your words flow with clarity and precision, commanding the attention of your audience.

What we offer

You give your best every day, because it makes you happy – and because of these benefits. Based on a 40-hour working week, you can count on:

A salary that grows

A gross monthly salary between
€5.550 and €6.900, with personal growth potential and a collective salary increase of 2.8% in January 2027.

Flexible budget on top

A Benefit Budget of 14.95% (including 8% holiday allowance) comes on top of your gross salary. Have it paid out, buy extra days off or save it for later.

Unlimited Learning

Training to boost your skills, a personal job coach, and thousands of free options to keep growing.

Vodafone mobile plan

You’ll receive a Vodafone subscription from us, and we’ll sponsor your new phone with €425. Every two years again.

NS-Business Card of your choice

An NS Business Card of your choice. Including first-class travel in your own time.

Discount on our brands

Discounts on many Vodafone, Ziggo, and hollandsnieuwe products. Plus extra fast service for any questions. For you, your friends, and your family.

Pension

A pension plan, with the option to save extra on top.

Giving back

Make an extra impact on society during working hours. Help seniors and children stay safe online through our educational programs.

Parental leave

We will supplement your salary to 100% for the 9 weeks of parental leave in the first year after birth, up to the statutory maximum daily wage.

Hybrid working

The option to work from home for 2 to 3 days a week instead of at the office, plus an internet allowance.

Annual bonus

An annual personal bonus, based on VodafoneZiggo's yearly results.

Support during your transition

Going through a gender transition? We offer practical assistance, psychological support, and paid transition leave.

What you bring

You bring strong experience in PKI security, security architecture and hands-on engineering. You design secure solutions for Root CA, issuing CAs, HSMs, scripts and supporting infrastructure, manage sensitive offline PKI assets and improve automation, documentation and recovery procedures. You advise on risks, controls and compliance, support audits and ceremonies, and troubleshoot complex Linux, scripting, HSM and certificate-chain issues. You combine architectural judgement with operational discipline, clear communication and ownership of high-risk security processes.

Requirements

HBO/WO-level education or thinking level in IT, security, computer science or similar.
At least 5 years of experience in IT security, PKI, security architecture or infrastructure engineering.
Proven knowledge of PKI, Root CA, issuing CAs, digital certificates, trust chains and certificate lifecycle.
Hands-on experience with HSMs, key material protection, access control and segregation of duties.
Practical experience with Linux, preferably Debian-based systems, Python and scripting is required.
Knowledge of cryptography and protocols such as RSA, ECC, AES, SHA, TLS/SSL, HTTPS, S/MIME and code signing.
Experience with automation, security tooling, CI/CD pipelines, runbooks, audit evidence or recovery procedures.
Fluent English; Dutch and CISSP, PKI, security or encryption certification are a plus.

Important: this role is only open to candidates currently residing in the Netherlands. If you do not currently live in the Netherlands, your application will not be considered.