Senior Security & IT Infra Consultant
Unisys · Diegem
What success looks like in this role:
We are looking for a motivated Senior Security & IT Infra Consultant 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, qualify, 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 handover to operations . You will also act as a trusted technical advisor to customers on networking and security topics.
This role requires 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 analyzing, building and testing secure network solutions. Your responsibilities will include:
Network & Security Analysis
Reviewing customer network and security capabilities
Assessing and analyzing security posture
Mapping and analyzing data flows and processes
Lab & System Administration
Building Proof-of-Concept (PoC) environments
Set up, creatively adapt, upgrade and maintain the lab environment
Testing & Automation
Testing and troubleshooting new systems and architectures
Build and execute creative automation of the security infrastructure testing
Updating operational procedures and documentation
Build and execute 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
Agile, creative thinker with a sense for detail and quality
Strong problem‑solving skills and eagerness to learn
Fluency in English is required and proficiency in Dutch and/or French; both is considered an asset
Must be prepared to work onsite at the office/lab in Diegem for the week
Knowledge of computer networking and network security
10+ 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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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.