F5 Network & Security Engineer

Vos missions

Great assignments await you with our key account clients in rich and varied environments

Our client, a leading organization operating in a large-scale and critical infrastructure environment, is looking for an experienced F5 Network & Security Engineer.

The consultant will join the IP Networks team and contribute to the design, implementation, security and operational management of the F5 BIG-IP infrastructure. This platform is a central component of the client’s data centre environment, supporting application delivery, load balancing, high availability and security services.

Design load-balancing and high-availability architectures.

Design and implement F5 BIG-IP solutions for application delivery and network traffic management.

Configure and administer virtual servers, pools, nodes, monitors, traffic policies and SSL profiles.

Develop, maintain and troubleshoot F5 iRules.

Manage SSL/TLS certificates, SSL offloading, encryption and traffic inspection.

Deploy and manage Web Application Firewall policies using F5 Advanced WAF.

Integrate authentication and access-management services using F5 APM and enterprise identity solutions.

Perform performance tuning, capacity planning and service optimization.

Support incident, problem and change-management activities.

Perform security patching, software upgrades and lifecycle management.

Conduct root-cause analysis for connectivity, application-delivery and performance issues.

Maintain technical documentation and operational procedures.

Provide knowledge transfer to internal teams and stakeholders.

You have the following skills

Advanced and hands-on expertise with F5 BIG-IP solutions.

Strong experience designing and implementing F5 solutions in complex, multi-site and data-centre environments.

Strong knowledge of:
F5 LTM

F5 Advanced WAF

F5 APM

iRules

SSL/TLS

Load balancing

High availability

Traffic management

In-depth knowledge of IP networks and network-management principles.

Good understanding of IT security architectures and technologies.

Experience with firewall environments such as Check Point and Palo Alto is an asset.

Strong troubleshooting, analytical and risk-assessment skills.

Ability to work independently and methodically in a critical operational environment.

Customer-oriented, flexible and able to manage urgent operational priorities.

Strong communication and stakeholder-management skills.

Bachelor’s or master’s degree in ICT, electronics, telecommunications or equivalent technical experience.

Professional proficiency in Dutch, French and English.

Location: Brussels

Work regime: 40 hours per week

Remote work: Up to three days per week, depending on operational requirements

Votre profil

You have at least 6 years of professional experiences in IT

If you are at least fluent in FR/ENG/NL it’s best

You’re eager to learn, motivated and curious

Let’s have a chat !

Advantages

Hospitalization insurance (partner/children incl.)

Group insurance

Dental insurance (partner/children included)

20 days statutory paid vacations (legal vacations cumulated for 1 year of work)

11 days recovery time work 38/40 per year (= annual average: 1 day per 20 days worked) if the client asks you to work 8h/day

Representation fee net per month.

Internet fee of € 40 per month.

Company car with national fuel card OR Public transport reimbursed OR mobility package.

Daily fee of 5.50€ net /day provided.

Subscription GSM unlimited calls for Belgium (ITS subscription)

Training plan (e-learning - certification at ITS charge)

Extra advantages:
Being a rather small team in BE (6 in back-office), we’re very close to each of our consultants and we differentiate ourselves trying to really take care of you and make you grow with us and within our different clients.

Regular follow-up (every 3 to 6months depending on your needs/will)

Regular teambuilding to meet-up and have fun (every 3 months more or less)

Flexibility and trust

Benefits of still being part to a bigger group (ITS Group) and having access to resources and of a larger team of Experts

Co-optation system because sharing is caring!

Processus de recrutement

1st pre-screening on the phone to discuss about your search and conditions and our first potential opportunities matching.

Job descriptions sent and Teams meeting fixed with us (HR and Sales) to dig into your experience and the role.

Package proposal so we all agree beforehand.

Your CV is sent to the different clients you’ve agreed to, to find the best mission for you!

En ligne depuis le 07.08.2026

Bruxelles

CDI

Entité : ITS Group Benelux

Anglais

Français

Néerlandais

Fonction managériale : Non

Mobilité : Non

Mode de poste : Sur Site

Salaire : Salary conform to experience.

Réf. SA0540

For more than 25 years, ITS Group has been a French ESN specializing in digital transformation, employing around 1,400 employees across 8 agencies in France and 1 in Belgium.

Our expertise: IT infrastructure & operations, cloud & managed services, mobility, workstations & networks, strategy, consulting & AMO, cybersecurity, development of business applications.

ITS Group places its CSR commitment at the heart of its concerns by developing sustainable and responsible digital technology and by promoting the professional and personal development of its employees.

Find out more: www.itsgroup.com