Expanding steadily since its launch in 2003, the ACENSI group is an IT consultancy firm, well known for their technical and functional know-how, who specialize in Telecommunications, Media and Financial Markets, as well as in the Energy industry. ACENSI guides businesses in evolutionary IT projects from the initial strategies through to their realization (Management and Project management, Development, Design and Implementation, Infrastructure). From its original focus on technical engineering and Business Analysis, ACENSI has developed new areas of expertise in Human Resource Management Systems, Business Intelligence, e-learning and Client Relationship Management. Dynamism, enthusiasm and social development are all valued at ACENSI, allowing our clients to benefit from consultants with a true blend of talents.
ACENSI BELGIUM is looking for his client an Linux Security Engineer (F/M/X)
Mission context
The IT Production department is working in Agile mode, which offers a challenging and motivating environment where teams and employees are empowered to manage their own technical domain. The Windows and Linux Security squad manages the support and services in following Risk -and Security - related domains:
• Authentication.
• Authorization and provisioning.
• Security configuration.
• Anti-malware.
• Vulnerability management.
• Risk management.
• Security monitoring.
Function description
• You will manage the lifecycle management of the Squad’s Security assets, specifically:
o Red Hat IdM.
o Configuration of the security monitoring tools.
o In-house solutions.
• You will be responsible for the hardening of Linux OS and related IDM (LDAP, Kerberos).
• You will be involved in Security monitoring and analysis of security events.
• You will contribute to the migration of infra and application assets to the Group’s Cloud infra.
• You will be responsible for third line security support and incident response, related to authentication, authorisation or vulnerability issues.
• You will contribute to the Critical Asset Recovery, DORA compliance and other projects.
• You will develop and maintain existing scripts, in-house security solutions.
• You will be involved in risk and vulnerability management:
o Take necessary actions to close risks and vulnerabilities.
o Contribute to audit campaigns and control plans.
o Report to management and other stakeholders.
• You will work autonomously on large, complex tasks and at the same time you will collaborate closely with your team members and our partners of the IT Group in Paris.
• You will work in a multicultural environment.
• You will be expected to perform at least 40% of your work on premise.
• You will perform On-Call activities on a rotational basis (7/7 18:00 – 7:30).
Language requirements
Dutch Optional.
French Preferred.
English Mandatory.
Education
Bachelor Degree.
Certification
Red Hat Certified Engineer (RHCE).
Telework
Expectation: 50% on site & 50% homeworking.
Required experience / knowledge
At least 7 years of relevant experience.
Technical experience
Mandatory
• Red Hat Linux OS security.
o Red Hat Identity Management (IdM) Directory Server.
o Kerberos MIT.
o Scripting and tools (Bash, Perl, Ansible).
Preferable
• Identity and Access Management (IAM) solutions.
• Tools (CyberArk, Elastic/ELK).
• Knowledges about AIX and Windows (security).
Business experience
Preferable
Financial Sector
Soft skills
• You question, analyze, and connect the dots. Your critical thinking cuts through noise to uncover insights, challenge assumptions, and make informed, objective decisions. Whether assessing risks, evaluating strategies, or spotting hidden opportunities, you bring clarity where others see complexity, always with logic, precision, and a focus on impact.
• Problems don’t slow you down, they sharpen your focus. You tackle challenges with analytical rigor and creativity, breaking down complexity to find pragmatic solutions. Whether it’s diagnosing root causes, weighing risks, or adapting on the fly, you turn obstacles into opportunities, always with clarity, efficiency, and a results-driven mindset.
• The client is at the center of everything you do: you anticipate and ensure the client needs are met. For you, being client-focused means listening deeply, understanding the unspoken, and acting with genuine care. You build relationships based on trust, not transactions, by offering tailored solutions that align with client goals, while always upholding the bank’s integrity.
• Knowledge sharing comes naturally to you: you distill complexity into clear insights, proactively bridge gaps, and foster a culture where expertise grows collectively. Whether mentoring colleagues, documenting best practices, or sparking cross-team learning, you turn individual know-how into shared success, because progress accelerates when we learn together.
• Teamwork is your natural reflex: you actively seek out diverse perspectives, foster open dialogue, and align efforts to achieve shared goals. For you, active collaboration means more than just contributing; it’s about creating synergy. You break down silos, bridge gaps between stakeholders, and ensure everyone’s voice is heard. Whether it’s co-creating solutions, resolving conflicts constructively, or rallying colleagues around a common purpose, you turn collective energy into tangible results. Your approach is inclusive, proactive, and always focused on strengthening trust and efficiency because you know that the best outcomes emerge when talent and ideas come together.
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