What success looks like in this role:

We are looking for a motivated Network / Security Specialist with a strong focus on networking to join our growing security team. You will work on impactful security projects, including large-scale encryption networks, helping customers design, build and operate secure infrastructures.

You will be involved in the full lifecycle of our solutions — from design and proof-of-concepts through testing, deployment and long-term support. You will also act as a trusted technical advisor to customers on networking and security topics.

This role requires regular on-site presence in our Diegem office and lab, where you will work hands-on with hardware, test environments and security platforms. We are looking for someone who enjoys working independently, taking ownership, and continuously developing their expertise in networking and cybersecurity.

If you enjoy solving complex technical challenges and want to grow in a small, agile and highly skilled team, this role is for you.

What you will do

You will play a key role in analysing, building and operating secure network solutions. Your responsibilities will include:

Network & Security Analysis

Reviewing customer network and security capabilities
Assessing and analysing security posture
Mapping and analysing data flows and processes

Lab & System Administration

Building Proof-of-Concept (PoC) environments
Setting up and maintaining the lab environment
Handling day-to-day lab operations and troubleshooting

Testing & Automation

Testing and troubleshooting new equipment
Validating operational procedures and documentation
Automating security infrastructure testing
Automating staging and pre-provisioning processes

Deployment & Migrations

Supporting staging, pre-provisioning and rollout of solutions
Assisting and guiding customers during migrations
Providing higher-level support for delivered solutions

Documentation & Coordination

Creating and maintaining operational procedures and manuals
Writing activity and test reports
Tracking issues and following up with vendors and partners
Gathering and managing legal, business and technical requirements

You will be successful in this role if you have:

Master’s degree in Engineering, Information Technology, Computer Science, or a related field, combined with relevant professional experience; or an equivalent combination of education and experience
Fluency in English is required; proficiency in Dutch and/or French is considered an asset
Must be prepared to work onsite at the office/lab in Diegem for multiple days per week
Strong problem‑solving skills and eagerness to learn
Knowledge of computer networking and network security
Some years of experience within the field
Eligible for EU Secret Security Clearance
Some experience with network infrastructure deployment and maintenance is a plus
Experience with Linux (CLI and network configuration)
Familiarity with automation tools (such as Ansible) and scripting languages (like Bash or Python) is an advantage

What We Offer

Hospitalization Insurance and various other insurances
Lunch vouchers
Eco-vouchers
Referral Program
Learning and training support
Last but not least, a great team

If you're passionate about solving complex challenges and eager to grow within a small, agile team, we’d love to hear from you.

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Unisys is proud to be an equal opportunity employer that considers all qualified applicants without regard to age, caste, citizenship, color, disability, family medical history, family status, ethnicity, gender, gender expression, gender identity, genetic information, marital status, national origin, parental status, pregnancy, race, religion, sex, sexual orientation, transgender status, veteran status or any other category protected by law.

This commitment includes our efforts to provide for all those who seek to express interest in employment the opportunity to participate without barriers. If you are a US job seeker unable to review the job opportunities herein, or cannot otherwise complete your expression of interest, without additional assistance and would like to discuss a request for reasonable accommodation, please contact our Global Recruiting organization at GlobalRecruiting@unisys.com or alternatively Toll Free: 888-560-1782 (Prompt 4). US job seekers can find more information about Unisys’ EEO commitment here.

Network/Security Specialist