Senior Network Security Engineer

Econocom Belgium; Brussel Hoofdstad; Sur place; EUR 70 000 - 100 000; Plein temps

Avantages offerts par ce poste

Company car

Meal vouchers

Eco vouchers

Hospitalization insurance

Group insurance

Home working

Résumé du poste

Econocom Belgium is seeking a Senior Network Engineer to design, operate and secure a large-scale network across Belgium and Europe. You will manage 24/7 connectivity in Cisco-centric environments, working across IT and OT and collaborating with security, applications and operations teams.

Based in Brussels, the role starts on-site for the first 3 months, then moves to a hybrid model (3 days on-site, 2 days remote). Travel within Belgium may be required occasionally.

Qualifications

• Senior network engineering experience in complex enterprise environments.
• Fluent in English with proficiency in French or Dutch.
• Strong communication and collaboration skills; autonomous work style.
• Comfortable in critical environments prioritizing reliability and security.
• Willing to participate in an on-call rotation (1 week out of 4).
• Willing to travel occasionally within Belgium.

Responsabilités

• Operate and maintain enterprise networks in a 24/7 environment.
• Deploy, upgrade, maintain, and troubleshoot network infrastructure.
• Support connectivity across multiple European locations.
• Contribute to strategic projects: data center connectivity, cloud networking, WAN modernization, security initiatives.
• Ensure changes are documented and executed per standards.
• Collaborate with infrastructure, security, application and operations teams.
• Contribute to network automation and operational improvements.

Connaissances

Routing & Switching

OSPF

IS-IS

MP-BGP

MSTP

Cloud networking

Azure

Python

Ansible

Cisco SD-WAN

Cisco ACI

Network monitoring

NAC

Syslog

Firewall

Check Point Firewalls

Elastic

On-call

Travel

Outils

Check Point Firewalls

Elastic

Description du poste

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
• 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+

Technical Environment

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

• Check Point Firewalls
• 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.