# Senior Network Engineer

> Uni Systems · Braine-l'Alleud, Belgium · Full-time · Posted 2026-05-28

**Workplace:** on_site

**Department:** Professional Services Practice

## Description

At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a Senior Network Engineer to join our UniQue team.

What will you be doing in this role?

-   Design, implement, and maintain enterprise LAN infrastructure across offices, campuses, and data center edge environments.
-   Configure and troubleshoot switching, campus routing, firewall rules, and traffic isolation.
-   Support access layer services, including NAC, 802.1X authentication, port security, and endpoint onboarding.
-   Monitor LAN health using Splunk and other monitoring tools by creating dashboards, alerts, and operational reports.
-   Analyze logs and telemetry data to proactively identify risks, incidents, and performance issues.
-   Develop automation solutions using Python or Ansible for provisioning, audits, backups, and compliance tasks.
-   Track switch health, interface utilization, latency, and service availability.
-   Lead incident response and restore services within SLA targets during critical LAN outages.
-   Perform root cause analysis and implement preventive measures to reduce recurring incidents.
-   Serve as a senior escalation point for complex LAN issues and strategic initiatives.
-   Mentor junior engineers and share best practices in campus networking.
-   Lead LAN projects, including office rollouts, switch refreshes, migrations, and network expansions.
-   Maintain accurate documentation, standards, and operational procedures for the LAN environment.

## Requirements

What do you need to succeed in this position?

-   Over 7 years of hands-on experience in enterprise LAN engineering and operations.
-   Minimum CCNP Enterprise certification (or an equivalent advanced certification).
-   Strong expertise in routing and switching technologies, including VLANs, STP, HSRP/VRRP, OSPF, and campus network design.
-   Advanced knowledge of enterprise switching platforms such as Cisco Catalyst, Aruba CX, Juniper EX, or similar technologies.
-   Strong expertise in firewall management (Palo Alto), including rule creation, maintenance, and traffic flow monitoring.
-   Experience using Splunk for monitoring, log analysis, and troubleshooting.
-   Experience with network automation using Python or Ansible is preferred.
-   Hands-on experience with network monitoring tools for device health, availability, and performance management.
-   Strong understanding of 802.1X, NAC, and access control technologies (Cisco ISE, ClearPass, or similar).
-   Experience with incident management, root cause analysis, and major outage resolution.
-   Proven experience mentoring engineers, leading projects, and serving as a senior escalation point.

At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our [Diversity, Equality & Inclusion Policy](https://www.unisystems.com/sites/default/files/2023-05/Diversity%2C%20Equality%20and%20Inclusion%20Policy.pdf) for more information.

## Apply

[Apply at Uni Systems](https://apply.workable.com/uni-systems/j/6F4A8D9F2C/apply)

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