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We are seeking a skilled and customer-focused IT Helpdesk Specialist to provide technical support and assistance to end-users across the organization. The ideal candidate will be responsible for troubleshooting hardware and software issues, resolving network problems, and ensuring smooth IT operations. This role requires strong communication skills, technical expertise, and a proactive attitude toward problem-solving.&nbsp;Responsibilities<ul><li>Serve as the first point of contact for users seeking technical assistance via phone, email, or ticketing system.</li><li>Diagnose and resolve hardware, software, and network issues in a timely and professional manner.</li><li>Install, configure, and maintain computer systems, applications, and peripheral devices.</li><li>Manage user accounts, permissions, and access rights in Active Directory and other systems.</li><li>Document technical issues and solutions in the helpdesk system for future reference.</li><li>Escalate complex issues to higher-level support or specialized teams when necessary.</li><li>Assist with onboarding and offboarding processes, including device setup and account provisioning.</li><li>Maintain inventory of IT equipment and ensure proper asset tracking.</li><li>Provide support for remote users and troubleshoot VPN and connectivity issues.</li><li>Stay updated with the latest IT trends, tools, and best practices.</li></ul>&nbsp;Qualifications&nbsp;<ul><li>Proven experience as a Helpdesk Specialist, IT Support Technician, or similar role.</li><li>Strong knowledge of Windows operating system.</li><li>Familiarity with Microsoft 365, Active Directory, and basic networking concepts.</li><li>Excellent problem-solving and communication skills.</li><li>Ability to work independently and manage multiple tasks effectively.</li><li>Customer-oriented mindset with a focus on delivering high-quality support.</li><li>Relevant certifications (e.g., CompTIA A+, ITIL, Microsoft Certified) are a plus.</li></ul>&nbsp;The Company Offers&nbsp;<ul><li>Opportunities for further development&nbsp;</li><li>Competitive remuneration package&nbsp;</li><li>Continuous Learning and development.&nbsp;</li></ul>

IT HELPDESK SPECIALIST (3628)

As a Security Engineer, you will join our highly skilled information security team with the mission to deliver high-quality, innovative cyber security services and solutions that reduce risk across the organization. In this role, you will receive structured mentoring, hands-on training, and exposure to enterprise-grade security technologies, building a solid foundation for a career in cybersecurity. You will gradually gain practical experience and deepen your technical expertise in multiple areas, such as network security, platform security, authentication/authorization systems, application security, and security frameworks. To succeed, you’ll need to demonstrate accountability, high motivation, a proactive attitude and a passion for rapid development in a challenging and regulated working environment.Responsibilities<ul><li>Contribute to building and maintaining the technical IT / cybersecurity capabilities necessary for safeguarding DIAS’s information systems and applications.</li><li>Support the administration of security-focused systems, such as data center firewalls, web application firewalls, database firewalls, hardware security modules, privileged access management, SMTP gateways, and managed PKI.</li><li>Assist in implementing security practices and tools throughout the Software Development Life Cycle (SDLC) / DevSecOps.</li><li>Explore and assess innovative technologies to solve daily cybersecurity challenges efficiently.</li><li>Perform vulnerability assessments to identify technical weaknesses.</li><li>Assist in the security risk analysis for current and new systems and recommend solutions for reducing exposure areas.</li><li>Contribute to audit preparation and compliance-related activities.</li><li>Assist in the creation of security processes, procedures, and performance metrics.</li><li>&nbsp;Work closely with other technical and operational teams to ensure effective security integration.</li></ul>Requirements<ul><li>Degree (or in the process of obtaining) in Computer Science, Mathematics, Physics, or a related field.</li><li>Knowledge of at least one programming language (Python preferred) for writing automation frameworks and relevant security tools</li><li>Understanding of Windows and Linux operating systems.</li><li>Passion for continuous learning and growth in cyber security</li><li>Good command of the English Language both written and oral</li><li>Excellent communication and interpersonal skills</li><li>Ability to work collaboratively in a team and independently when required</li></ul>Will be considered a plus:<ul><li>Certifications in Cybersecurity, Programming, or Linux administration.</li><li>Familiarity with enterprise security tools and frameworks.</li></ul>Why would you enjoy working with us ?As member of our team:<ul><li>You will work in a mission-critical fintech company shaping the future of digital payments in Greece.</li><li>You will experience a workplace built on meritocracy, transparency, and recognition.</li><li>You will receive mentoring, specialized training, and certifications to boost your career development.</li><li>You will work with cutting-edge security technologies in a regulated financial environment.</li></ul>What we offer:<ul><li>Strong mentoring and guidance</li><li>Competitive remuneration package</li><li>Private health &amp; life insurance plan for you and your family</li><li>Children allowances</li><li>Meal benefits</li><li>Hybrid working model</li><li>Training &amp; development opportunities</li><li>A stable, positive and supportive working environment</li></ul>

Security Engineer

Currently we are searching to hire a Head of Offensive Security to oversee offensive security testing of systems, applications, and infrastructure to stay ahead of threats.<h2>During your day you will:</h2><ul><li>Lead the design and execution of real-world attack simulations, including ethical hacking, red teaming, and penetration testing, to uncover weaknesses security defenses</li><li>Improve organizational security posture through actionable recommendations that enhance detection, response, and preventive measures</li><li>Monitor and validate security controls, testing the effectiveness of existing measures and incident response processes</li><li>Manage threat intelligence, collaborating with blue teams to anticipate and counter evolving attack techniques</li><li>Drive security innovation by developing new offensive tools, techniques, and methodologies to stay ahead of adversaries</li></ul><h2>What you need to stand out:</h2><ul><li>BSc in computing, or related discipline</li><li>Master’s degree will be considered as an asset</li><li>Minimum 7 years previous experience in a senior offensive security role</li><li>Proven expertise in conducting penetration tests, red/purple teaming</li><li>Experience in designing and lead complex attack simulations and adversary emulation exercises</li><li>Deep understanding and knowledge of offensive security tools, techniques and standards</li><li>Familiar with vulnerability management platforms</li><li>Ability to align offensive operations with real-world threat actor tactics, like MITRE ATT&amp;CK framework</li><li>Certified with CISSP, &nbsp;OSCP, OSWE, &nbsp;OSCE, &nbsp;OSEE, CRTO, &nbsp;GXPN</li></ul>

Head of Offensive Security (M6)

A Systems Senior Engineer with proven experience in datacenter environments, virtualization, and the Microsoft technology stack. The successful candidate will be responsible for maintaining and evolving our hybrid infrastructure across on-premises and cloud (Azure) platforms, ensuring performance, scalability, and security across all Corporate IT systems.&nbsp;Responsibilities<ul><li>Implements and maintain virtualization platforms (Microsoft Hyper-V, VMware ESXi, clusters, Storages and backups).</li><li>Deploy, monitor, and optimize workloads in Microsoft Azure.</li><li>Implement and maintain Windows &amp; Linux Server environments and demonstrate strong expertise in Active Directory, DNS/DHCP, Group Policy, and File Services.</li><li>Support Microsoft Intune, Defender for Endpoint, and Azure AD / Entra ID integration.</li><li>Participate in infrastructure upgrades, monitoring setup, and incident resolution.</li><li>Collaborate with network and security teams to ensure compliance, performance, and reliability.</li><li>Performs configuration management and disaster recovery tasks on a new environment.</li><li>Provide 2nd level support.</li></ul>&nbsp;Qualifications&nbsp;<ul><li>5+ years of experience in Systems Engineering or Infrastructure Administration.</li><li>Bachelor’s degree in Computer Science, Information Technology, or a related field (Master’s preferred).</li><li>Solid knowledge of Hyper-V and/or VMware environments.</li><li>Experience in backup/recovery platforms</li><li>Experience with Azure IaaS/PaaS, Azure Arc, and Intune MDM.</li><li>Strong understanding of Windows Server 2016/2019/2022, Active Directory, and related services.</li><li>Familiarity with PowerShell scripting for automation.</li><li>Good understanding of networking fundamentals (TCP/IP, VLANs, VPNs).</li><li>Azure Certification(s)</li><li>Effective/clear communication</li><li>Cooperation and teamwork</li><li>Fluency in English (oral &amp; written)</li></ul>&nbsp;The Company Offers&nbsp;<ul><li>Opportunities for further development&nbsp;</li><li>Competitive remuneration package&nbsp;</li><li>Continuous Learning and development.&nbsp;</li></ul>&nbsp;

SYSTEMS SENIOR ENGINEER (3653)

A Azure &amp; Systems Senior Engineer with proven experience in datacenter environments, virtualization, and the Microsoft technology stack. The successful candidate will be responsible for maintaining and evolving our hybrid infrastructure across on-premises and cloud (Azure) platforms, ensuring performance, scalability, and security across all Corporate IT systems.&nbsp;Responsibilities<ul><li>Deploy, monitor, and optimize Azure workloads (IaaS/PaaS, Azure Arc, storage).</li><li>Administer and harden Active Directory (GPOs, OU structure, DNS/DHCP, delegation).</li><li>Implement and maintain Entra ID policies, Conditional Access, MFA, and identity protection.</li><li>Experience designing high-availability and disaster recovery solutions using Azure native services (Availability Zones, ASR, Load Balancers, Storage redundancy models)</li><li>Manage and support Intune, Autopilot, endpoint compliance, and device configuration.</li><li>Administer Microsoft 365 services (Exchange Online, Teams, SharePoint, OneDrive).</li><li>Apply and maintain the Microsoft Tiering Security Model (Tier-0 / Tier-1 / Tier-2).</li><li>Support hybrid identity and AD/Entra synchronization.</li><li>Support Windows Server and virtualization environments (Hyper-V/VMware).</li><li>Ensure endpoint and infrastructure security using Defender for Endpoint.</li></ul>&nbsp;Qualifications&nbsp;<ul><li>Bachelor’s degree in Computer Science, Information Technology, or a related field (Master’s preferred).</li><li>5+ years of experience in Systems Engineering or Infrastructure Administration.</li><li>Proven experience with Azure IaaS/PaaS, Azure Arc, Azure networking, monitoring, and hybrid environments.</li><li>Familiarity with Microsoft Tiering Security Model (Tier-0 / Tier-1 / Tier-2) and privileged access concepts.</li><li>Strong hands-on experience with Microsoft Hyper-V (clusters, storage, HA), and good understanding of VMware environments.</li><li>Experience in backup/recovery platforms</li><li>Strong experience with Azure IaaS/PaaS, Azure Arc, and Intune MDM.</li><li>Strong understanding of Windows Server 2016/2019/2022, Active Directory, and related services.</li><li>Familiarity with PowerShell scripting for automation.</li><li>Solid working knowledge of Microsoft 365 services</li><li>Good understanding of networking fundamentals (TCP/IP, VLANs, VPNs).</li><li>Azure Certifications (AZ-104, AZ-305, MS-102, SC-300) considered a plus.</li><li>Effective communication skills, teamwork mindset, and structured documentation habits.</li><li>Cooperation and teamwork</li><li>Fluency in English (oral &amp; written)</li></ul>&nbsp;The Company Offers&nbsp;<ul><li>Opportunities for further development&nbsp;</li><li>Competitive remuneration package&nbsp;</li><li>Continuous Learning and development.&nbsp;</li></ul>

Θέσεις Εργασίας Manager Επιχειρηματικής Ανάπτυξης Μαρούσι, Πληροφορική - Σελίδα 2

it helpdesk specialist (3628)

Hellenic Cables

security engineer

ΔΙΑΤΡΑΠΕΖΙΚΑ ΣΥΣΤΗΜΑΤΑ (ΔΙΑΣ) Α.Ε

head of offensive security (m6)

Motor Oil

systems senior engineer (3653)

Hellenic Cables

azure & systems senior engineer (3621)

Hellenic Cables

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