Senior Network Engineer

Brussels (Anderlecht & European District)

Our client is looking for an experienced Senior Network Engineer to join a team responsible for the design, operation, security, and continuous improvement of a large-scale network infrastructure supporting business and industrial operations across Belgium, France, Germany, Switzerland, and the UK.

Working in both IT and OT environments, you will play a key role in ensuring the reliability, performance, and security of critical network services running 24/7.

Your Role

As a Senior Network Engineer, you will be involved in both operational activities and infrastructure projects. You will work closely with internal teams to maintain and evolve a complex network environment while supporting business-critical services across Europe.

Your responsibilities include:

- Managing and operating enterprise network infrastructures in a 24/7 environment
- Performing network deployments, upgrades, maintenance, and troubleshooting
- Supporting connectivity across multiple European locations
- Participating in strategic infrastructure projects, including:
- Data center connectivity and expansion
- Cloud networking and security initiatives
- WAN modernization projects
- Network enhancements driven by business and application requirements
- Ensuring changes are prepared, documented, and executed following strict operational and security standards
- Collaborating with infrastructure, security, application, and operations teams
- Contributing to network automation and operational improvements

Your Profile

- Strong experience as a Network Engineer within complex enterprise environments
- Fluent in English and proficient in either French or Dutch
- Excellent communication and collaboration skills
- Able to work both autonomously and as part of a team




- Comfortable working in critical environments where reliability and security are key
- Willing to participate in an on-call rotation (maximum 1 week out of 4)
- Driving license and willingness to travel occasionally within Belgium

Technical Requirements

Must-have skills:

- Advanced knowledge of Routing & Switching protocols:
- OSPF
- IS-IS
- MP-BGP
- MSTP
- Cisco Wireless
- Cloud technologies (Azure or similar)
- Network automation using Python and/or Ansible
- Cisco SD-WAN and/or Cisco ACI
- Network monitoring and management solutions
- NAC, central Syslog and related backend tools
- Firewall technologies and network security best practices

Nice to have:

- TACACS+
- RADIUS

Technical Environment

You will work within a predominantly Cisco ecosystem and gain exposure to a wide range of technologies, including:

- Cisco ACI
- Cisco SD-WAN
- Cisco ASR, ISR, Catalyst & Nexus
- Cisco Wireless
- Microsoft Azure
- Palo Alto Firewalls
- Check Point Firewalls
- Cisco ISE
- Zabbix
- Elastic

Practical Information

Location: Brussels (split between Avenue des Arts and Anderlecht)

Full-time on-site during the first 3 months

Afterwards: hybrid working model (3 days on-site, 2 days remote)

Interested in joining a team that manages and transforms critical network infrastructures across Europe? We'd love to hear from you. ?

What can Econocom offer you?

- An attractive salary complemented by hospitalization and group insurance, meal and eco vouchers, a company car, and the possibility of working from home.
- Upon joining, you will be assigned a Competence Manager who will introduce you to the company and guide your individual career.
- Various blended training opportunities that will help you grow professionally.
- Fun – through our quarterly events where you are informed about the workings of Econocom and stay in contact with colleagues.

📌 Senior network security engineer (España)
🏢 Econocom Belgium
📍 España