Senior Information Security Engineer (Critical Systems & Infrastructure)
Κωδικός αναφοράς θέσης εργασίας : 126735
Ημερομηνία δημοσίευσης: 05/11/2026
🌍 Are you ready to contribute to large-scale ICT projects that shape critical infrastructures across Greece?
🔐 Do you enjoy designing and implementing secure enterprise environments while addressing modern cybersecurity challenges?
🛠 Would building secure, scalable, and resilient IT infrastructures in enterprise environments excite you?
ManpowerGroup Greece, on behalf of our client, a well-established ICT solutions provider, is looking for a highly motivated Senior Security Engineer to join a dynamic and growing Engineering team.
Our client is a modern technology company specializing in the delivery of complex ICT and cybersecurity projects across public and private sector organizations. The company participates in large-scale digital transformation initiatives in collaboration with leading telecommunications providers and major systems integrators, delivering expertise in cybersecurity, systems integration, networking, cloud technologies, datacenter infrastructure, and managed services.
📌 Location: Athens, Eastern Attica
📍 Work Model: On-site
🖋️ Reporting Line: Delivery Manager
What You Will Do
As a Senior Security Engineer, you will be responsible for designing, implementing, and maintaining enterprise security solutions across on-premises, cloud, and hybrid environments. You will work closely with infrastructure, cloud, and networking teams to strengthen cybersecurity posture, protect critical assets, and ensure secure operations across complex enterprise environments.
Key Responsibilities
• Design, implement, and maintain enterprise security architectures and cybersecurity solutions.
• Deploy, administer, and optimize security technologies including Firewalls, VPNs, IDS/IPS, SIEM, Endpoint Security, EDR/XDR, MFA, and Privileged Access Management solutions.
• Perform security hardening, vulnerability management, security assessments, and remediation activities across Linux-based and enterprise environments.
• Design and support secure network infrastructures, ensuring proper segmentation, access controls, and protection against evolving cyber threats.
• Secure Kubernetes and containerized platforms through policy enforcement, access control mechanisms, image scanning, and runtime protection.
• Monitor security events, investigate incidents, perform root cause analysis, and contribute to continuous security improvement initiatives.
• Collaborate with technical teams to implement security-by-design principles throughout project lifecycles.
• Produce and maintain technical documentation, operational procedures, security standards, and architectural designs.
Requirements
• Bachelor's or Master's degree in Computer Science, Information Technology, Telecommunications, Cybersecurity, or a related field.
• 7+ years of experience in Security Engineering, Infrastructure Security, Cybersecurity, or Enterprise IT environments.
• Strong hands-on experience with Linux administration, security hardening, troubleshooting, and enterprise infrastructure environments.
• Experience with enterprise security technologies including Firewalls, VPNs, IDS/IPS, SIEM, Endpoint Security, EDR/XDR, MFA, and PAM solutions.
• Strong understanding of Network Security principles, TCP/IP networking, routing, switching, VPN technologies, and network segmentation.
• Experience with Vulnerability Management, Security Assessments, Incident Response, and Risk Mitigation activities.
• Hands-on experience securing Kubernetes and containerized environments.
• Familiarity with Active Directory, Identity & Access Management (IAM), PKI, and core infrastructure services.
• Experience with Cloud and Hybrid Infrastructure environments.
• Knowledge of security standards and frameworks such as ISO 27001, NIST, and CIS Benchmarks.
• Scripting and automation experience using Python, Bash, or PowerShell.
• Excellent communication skills in both Greek and English.
Any of the following will be highly appreciated:
• Security+, CEH, CISSP, CISM, or equivalent cybersecurity certifications
• Watchguard, Palo Alto, Check Point, Cisco Security, or similar vendor certifications
Compensation package and Benefits:
👥 Recruitment Process:
· If you're interested in this role, feel free to apply directly. Our consultants will contact the candidates who meet the profile's requirements to arrange an interview.
· As for the next step, there will be 2 more interview rounds with the Hiring Manager and Team Leaders, either in person or online.
For any questions regarding this opportunity, please contact directly George Komninoa at the following email: [email protected]
You can always check all roles on our website https://www.manpower.gr
#EmpoweringTalent #WeBelieveInTalent #ManpowerGroupGreece
🔐 Do you enjoy designing and implementing secure enterprise environments while addressing modern cybersecurity challenges?
🛠 Would building secure, scalable, and resilient IT infrastructures in enterprise environments excite you?
ManpowerGroup Greece, on behalf of our client, a well-established ICT solutions provider, is looking for a highly motivated Senior Security Engineer to join a dynamic and growing Engineering team.
Our client is a modern technology company specializing in the delivery of complex ICT and cybersecurity projects across public and private sector organizations. The company participates in large-scale digital transformation initiatives in collaboration with leading telecommunications providers and major systems integrators, delivering expertise in cybersecurity, systems integration, networking, cloud technologies, datacenter infrastructure, and managed services.
📌 Location: Athens, Eastern Attica
📍 Work Model: On-site
🖋️ Reporting Line: Delivery Manager
What You Will Do
As a Senior Security Engineer, you will be responsible for designing, implementing, and maintaining enterprise security solutions across on-premises, cloud, and hybrid environments. You will work closely with infrastructure, cloud, and networking teams to strengthen cybersecurity posture, protect critical assets, and ensure secure operations across complex enterprise environments.
Key Responsibilities
• Design, implement, and maintain enterprise security architectures and cybersecurity solutions.
• Deploy, administer, and optimize security technologies including Firewalls, VPNs, IDS/IPS, SIEM, Endpoint Security, EDR/XDR, MFA, and Privileged Access Management solutions.
• Perform security hardening, vulnerability management, security assessments, and remediation activities across Linux-based and enterprise environments.
• Design and support secure network infrastructures, ensuring proper segmentation, access controls, and protection against evolving cyber threats.
• Secure Kubernetes and containerized platforms through policy enforcement, access control mechanisms, image scanning, and runtime protection.
• Monitor security events, investigate incidents, perform root cause analysis, and contribute to continuous security improvement initiatives.
• Collaborate with technical teams to implement security-by-design principles throughout project lifecycles.
• Produce and maintain technical documentation, operational procedures, security standards, and architectural designs.
Requirements
• Bachelor's or Master's degree in Computer Science, Information Technology, Telecommunications, Cybersecurity, or a related field.
• 7+ years of experience in Security Engineering, Infrastructure Security, Cybersecurity, or Enterprise IT environments.
• Strong hands-on experience with Linux administration, security hardening, troubleshooting, and enterprise infrastructure environments.
• Experience with enterprise security technologies including Firewalls, VPNs, IDS/IPS, SIEM, Endpoint Security, EDR/XDR, MFA, and PAM solutions.
• Strong understanding of Network Security principles, TCP/IP networking, routing, switching, VPN technologies, and network segmentation.
• Experience with Vulnerability Management, Security Assessments, Incident Response, and Risk Mitigation activities.
• Hands-on experience securing Kubernetes and containerized environments.
• Familiarity with Active Directory, Identity & Access Management (IAM), PKI, and core infrastructure services.
• Experience with Cloud and Hybrid Infrastructure environments.
• Knowledge of security standards and frameworks such as ISO 27001, NIST, and CIS Benchmarks.
• Scripting and automation experience using Python, Bash, or PowerShell.
• Excellent communication skills in both Greek and English.
Any of the following will be highly appreciated:
• Security+, CEH, CISSP, CISM, or equivalent cybersecurity certifications
• Watchguard, Palo Alto, Check Point, Cisco Security, or similar vendor certifications
Compensation package and Benefits:
• Compensation package 4000-6000 gross per month based on skills and experience
• Medical insurance plan
• Continuous learning with access to premium training platforms
• Participation in large-scale ICT, telecommunications, public sector, or cybersecurity transformation projects.
• Medical insurance plan
• Continuous learning with access to premium training platforms
• Participation in large-scale ICT, telecommunications, public sector, or cybersecurity transformation projects.
👥 Recruitment Process:
· If you're interested in this role, feel free to apply directly. Our consultants will contact the candidates who meet the profile's requirements to arrange an interview.
· As for the next step, there will be 2 more interview rounds with the Hiring Manager and Team Leaders, either in person or online.
For any questions regarding this opportunity, please contact directly George Komninoa at the following email: [email protected]
You can always check all roles on our website https://www.manpower.gr
#EmpoweringTalent #WeBelieveInTalent #ManpowerGroupGreece
