linux administrator

CALNET

Job Overview We are seeking a highly skilled and motivated Linux System Administrator with active TS/SCI clearance to join our dynamic team. In this role, you will be responsible for managing and maintaining complex Linux-based IT infrastructure, ensuring system security, stability, and performance. Your expertise will support mission-critical operations, requiring a proactive approach to system architecture, security protocols, and network integration. This position offers an exciting opportunity to work on cutting-edge solutions within a fast-paced environment that values innovation and precision.Duties<ul><li>Install, configure, and maintain Linux operating systems across multiple environments, including physical servers and virtualized platforms such as VMware and ESXi.</li><li>Manage system security by implementing firewalls, VPNs, and access controls aligned with information security standards.</li><li>Monitor system performance using tools that support load balancing, RAID controller management, and system health diagnostics.</li><li>Develop and automate system administration tasks through scripting languages like Bash (Unix shell), Python, and PowerShell to streamline operations.</li><li>Design and implement scalable solutions utilizing service-oriented architecture (SOA), microservices, RESTful APIs, and cloud platforms such as AWS and Azure.</li><li>Collaborate with cross-functional teams to develop solution architecture that integrates databases like MySQL, PostgreSQL, Oracle, Microsoft SQL Server, and NoSQL databases.</li><li>Conduct regular system backups, disaster recovery planning, and patch management to ensure high availability and data integrity.</li><li>Support systems engineering efforts by designing robust system architectures that incorporate virtualization technologies such as Kubernetes containers and VMware environments.</li><li>Maintain comprehensive documentation of system configurations, procedures, and incident reports following SDLC (Software Development Life Cycle) best practices.</li></ul>Experience<ul><li>Proven experience in Linux system administration within a secure environment requiring TS/SCI clearance.</li><li>Strong understanding of operating systems including UNIX and Windows environments with hands-on experience in system design and architecture.</li><li>Demonstrated knowledge of computer networking concepts such as DNS, DHCP, TCP/IP protocols, load balancing solutions, VPNs, firewalls, and network security best practices.</li><li>Familiarity with DevOps tools like Jenkins, Git repositories, CI/CD pipelines, Docker containers, Kubernetes orchestration, and automation frameworks.</li><li>Experience working with IT infrastructure components including RAID controllers, SAN storage solutions, virtualization platforms (VMware vSphere/ESXi), and cloud services (AWS/Azure).</li><li>Skilled in scripting languages such as Bash shell scripting or Python for automation tasks; experience with PL/SQL or T-SQL is a plus.</li><li>Knowledge of solution architecture principles for enterprise systems involving RESTful APIs, microservices architecture, service-oriented architecture (SOA), and API management.</li><li>Background in systems engineering with a focus on system design for high availability environments supporting critical operations. Join us to leverage your expertise in Linux systems administration while contributing to vital national security missions! We value innovation-driven professionals who thrive in collaborative settings dedicated to excellence in IT infrastructure management.</li></ul>Pay: $90,000.00 - $120,000.00 per yearBenefits:<ul><li>401(k)</li><li>401(k) matching</li><li>Dental insurance</li><li>Health insurance</li><li>Life insurance</li><li>Paid time off</li><li>Vision insurance</li></ul>Work Location: In person

LINUX System Administrator with TS/SCI Clearance

Hitachi Rail

<div>
 
 About Us
 
 
 
 A career at Hitachi Rail will help create a legacy. With operations in every corner of the world, our work goes to the cutting-edge of digital transformation and technology. From the multi-cultural strength of our global organisation to the sustainable and innovative ways we work to bring people together, there's something for everyone to get stuck into. And that's where you come in.
 
 
 Cairo, Egypt (On-Site)
 
 
 
 Role Overview:
 
 
 
 
 We are seeking a System Administrator with strong expertise in SQL database management and experience in Linux and Windows server environments. The successful candidate will maintain, optimize, and secure our IT infrastructure, ensuring system reliability, managing database performance, and supporting business-critical applications.
 
 
 
 
 Work Location: Attaba Metro Station
 
 
 
 
 Key Responsibilities:
 
 
 
 
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 Install, configure, and maintain Linux and Windows servers.
 </li>
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 Monitor system performance and troubleshoot issues.
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 Manage servers and IT equipment, ensuring proper configuration and security policies.
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 Administrator SQL databases (installation, configuration, backup, recovery).
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 Optimize queries and ensure high database performance.
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 Implement data integrity and security measures.
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 Schedule and monitor backups and disaster recovery plans.
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 Apply patches and updates to systems and databases.
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 Develop scripts for routine tasks and system monitoring.
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 Maintain detailed documentation of configurations and procedures.
 </li>
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 Ensure compliance with IT policies and standards.
 
 
 
 </li>
 </ul>
 
 Required Skills &amp; Qualifications:
 
 
 
 
 <ul>
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 Bachelor's degree in Computer Science, IT, or related field.
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 3-5 years of experience as a System Administrator with SQL database expertise.
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 Strong knowledge of:
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 Linux and Windows server environments
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 Microsoft SQL Server, MySQL, or PostgreSQL
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 </ul>
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 Familiarity with virtualization (VMware, Hyper-V) and cloud platforms.
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 Excellent troubleshooting and problem-solving skills.
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 Knowledge of networking fundamentals and security best practices.
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 </ul>
 Thank you for your interest in Hitachi Rail. If your application is of interest, we will be in contact. Please do not hesitate to discover more about us and our latest jobs at https://www.hitachirail.com/careers .
 
 
 
 At Hitachi Rail, there is a place for everyone. We welcome and value differences in background, age, gender, sexuality, family status, disability, race, nationality, ethnicity, religion, and world view. It is our commitment to create an inclusive environment - we are proud to be an equal opportunity employer.
 
 
 
 We would be delighted if you would be one of our followers at https://www.linkedin.com/company/hitachirail .
</div>

System Administrator

Daztech Private Limited

Job Description:<ul><li>Oracle storage and systems support</li><li>Oracle Linux / Solaris / Unix Support to customers</li><li>Virtualization (KVM)</li><li>Able to demonstrate high initiative and ownership of issues</li><li>Able to work at a fast pace and achieve pre-determined billable utilization goals</li><li>Able to work at a high level independently, utilizing other resources with good judgment</li><li>Responsible supporting infrastructure technology implementations in Technology Support Services</li><li>Good written, verbal and interpersonal skills</li><li>Provide subject matter expertise, advice and consultancy for assigned technology and infrastructure systems</li><li>Installing and configuring hardware and different software products as per project requirement</li><li>Troubleshoot and resolve issues when contacted by clients by providing both on-site and remote support</li></ul>Required Qualifications:<ul><li>Minimum 1-3 years of experience.</li><li>Virtualization (KVM/ VMware)</li><li>Hands on experience for Oracle systems and storages</li><li>BS &ndash; computer science or equivalent</li><li>Linux administration</li></ul>Job Type: Full-timeApplication Question(s):<ul><li>How much total experience you have?</li><li>Your Current Salary?</li><li>Your Expected Salary?</li><li>Do you have to serve notice period?</li><li>Are you the resident of Islamabad?</li></ul>Work Location: In person

Customer Support Engineer

Metis International (Pvt) Ltd

About the RoleWe are looking for a hands-on Cloud &amp; Infrastructure Engineer to join the HyperNym team. You will be responsible for provisioning and managing our Azure environments, handling Microsoft 365 email administration, deploying and operating Kubernetes clusters on AKS, and maintaining Linux-based workloads. This is a critical role supporting our enterprise IoT platform, Iotility, and its global client base.Key ResponsibilitiesAzure Infrastructure<ul><li>Provision and manage Azure subscriptions, tenants, and resource groups</li></ul><ul><li>Configure Azure Active Directory (Entra ID), RBAC, and identity management</li></ul><ul><li>Deploy and maintain Azure services including VMs, VNets, storage, and App Services</li></ul><ul><li>Manage Azure Cost Management and optimise cloud spend</li></ul><ul><li>Implement Azure security policies, firewalls, and compliance controls</li></ul>Microsoft 365 &amp; Email Administration<ul><li>Create and manage Microsoft 365 tenants from scratch</li></ul><ul><li>Administer Exchange Online, Outlook, and email routing</li></ul><ul><li>Manage user accounts, licences, groups, and Teams configuration</li></ul><ul><li>Configure DNS records (MX, SPF, DKIM, DMARC) for email deliverability</li></ul><ul><li>Handle M365 security and compliance settings</li></ul>Kubernetes &amp; AKS<ul><li>Deploy and manage Azure Kubernetes Service (AKS) clusters</li></ul><ul><li>Write and maintain Helm charts and Kubernetes manifests (Deployments, Services, Ingress, HPA)</li></ul><ul><li>Configure cluster networking, namespaces, and RBAC</li></ul><ul><li>Implement monitoring and logging using Prometheus, Grafana, or Azure Monitor</li></ul><ul><li>Manage container images and pipelines via Azure Container Registry (ACR)</li></ul><ul><li>Perform cluster upgrades, node pool scaling, and cost optimisation</li></ul>Linux Administration<ul><li>Manage and harden Ubuntu/CentOS servers in cloud and on-premise environments</li></ul><ul><li>Write shell scripts and automate operational tasks with Bash or Python</li></ul><ul><li>Troubleshoot system performance, networking, and service issues</li></ul><ul><li>Manage Docker and container runtimes on Linux hosts</li></ul><ul><li>Maintain SSH access controls, firewall rules (UFW/iptables), and system logs</li></ul>DevOps &amp; CI/CD<ul><li>Set up and maintain Azure DevOps or GitHub Actions pipelines</li></ul><ul><li>Support infrastructure-as-code using Terraform or Bicep</li></ul><ul><li>Collaborate with development teams on deployment strategies and environment management</li></ul>Required Skills &amp; Experience<ul><li>3+ years of hands-on experience with Microsoft Azure</li></ul><ul><li>Proven experience creating and managing Azure tenants and subscriptions</li></ul><ul><li>Strong knowledge of Microsoft 365 administration (Exchange Online, Entra ID, Teams)</li></ul><ul><li>Solid Kubernetes experience, preferably on AKS in a production environment</li></ul><ul><li>Proficiency with Linux (Ubuntu preferred) &mdash; command line, scripting, troubleshooting</li></ul><ul><li>Familiarity with Docker and containerisation workflows</li></ul><ul><li>Understanding of networking fundamentals (DNS, TCP/IP, VPN, load balancing)</li></ul><ul><li>Experience with CI/CD pipelines (Azure DevOps or GitHub Actions)</li></ul>Nice to Have<ul><li>Azure certifications (AZ-104, AZ-305, AKS-specific)</li></ul><ul><li>Experience with Terraform or Bicep for infrastructure-as-code</li></ul><ul><li>Familiarity with IoT platforms, MQTT, or telemetry data pipelines</li></ul><ul><li>Exposure to multi-region or multi-tenant SaaS deployments</li></ul><ul><li>Experience supporting enterprise or telecoms clients</li></ul>What We Offer<ul><li>Competitive salary based on experience</li></ul><ul><li>Opportunity to work on a cutting-edge enterprise IoT platform serving global telecoms clients</li></ul><ul><li>Collaborative and fast-moving startup environment</li></ul><ul><li>Exposure to diverse geographies including UK, Gulf, Pakistan, and Africa</li></ul><ul><li>Flexible and hybrid working arrangements</li></ul>Job Type: Full-timeWork Location: In person

Cloud & Infrastructure Engineer

Eccohost

Eccohost is seeking two highly skilled and Certified cPanel Professionals to join our core technical team. As an L3 System Administrator, you will be responsible for the health, security, and performance of our server infrastructure. You will handle the most complex technical escalations, ensuring 99.9% uptime for our global client base.Key Responsibilities<ul><li>L3 Technical Support: Resolve complex server-side issues escalated from L1/L2 teams, including kernel-level troubleshooting and advanced network debugging.</li><li>Infrastructure Management: Oversee high-volume server environments (WHM/cPanel) across providers like Hetzner, Vultr, and DigitalOcean.</li><li>Security &amp; Optimization: Manage server hardening using cPGuard, CloudLinux, and LiteSpeed. Monitor for and mitigate DDoS attacks and malware.</li><li>Automation &amp; Scripting: Develop and maintain Bash/Python scripts to automate routine server tasks and domain management.</li><li>Migration Expert: Execute seamless large-scale migrations (WordPress, WHM to WHM, and cross-platform) with zero data loss.</li><li>Email Deliverability: Manage complex mail configurations, including Exim troubleshooting, Amazon SES Smarthosting, and SMTP relay setups.</li></ul>Required Qualifications<ul><li>Certification: Must hold an active cPanel Professional (CPP) or cPanel Sales Professional (CPSP) certification. (cPanel Certified System Administrator preferred).</li><li>Experience: Minimum of 5+ years in web hosting or server administration.</li><li>OS Mastery: Expert knowledge of AlmaLinux, CloudLinux, and CentOS.</li><li>Web Stack: Deep understanding of LiteSpeed, Apache, Nginx, PHP-FPM, and MySQL/MariaDB optimization.</li><li>Technical Tools: Proficiency with Git/Git LFS, LVM partitioning, RAID configurations, and AWS CLI.</li><li>Problem Solving: Proven ability to fix &quot;unsolvable&quot; technical issues under pressure.</li></ul>Preferred Skills<ul><li>Experience with cPGuard security suite.</li><li>Familiarity with WHMCS or custom hosting billing dashboards.</li><li>Knowledge of backup solutions (JetBackup or Acronis).</li></ul>What We Offer<ul><li>Competitive salary based on experience and certifications.</li><li>Opportunity to work with cutting-edge server hardware and high-volume traffic.</li><li>A professional, growth-oriented environment within a leading hosting provider.</li></ul>Pay: Rs3,000.00 - Rs6,000.00 per hourWork Location: Remote

Senior L3 System Administrator (Certified cPanel Professional)

WorkForce

We&rsquo;re Hiring: System Administrator (DevOps) Doha, QatarJob Summary We are seeking a proactive System Administrator with DevOps experience to manage IT infrastructure, cloud environments, automation, and system security.Key Responsibilities<ul><li>Manage Linux and Windows servers, storage, and backup systems</li><li>Administer firewalls and network security (FortiGate, Cisco)</li><li>Work with AWS/Azure cloud and virtualization (VMs, Docker, Kubernetes)</li><li>Build and maintain CI/CD pipelines (Jenkins, GitLab CI, GitHub Actions)</li><li>Automate infrastructure using Terraform and Ansible</li><li>Monitor systems using Prometheus, Grafana, and ELK stack</li><li>Handle networking (DNS, VPN, VLANs) and troubleshooting</li><li>Ensure security compliance and optimize system performance</li></ul>Requirements<ul><li>Bachelor&rsquo;s degree in IT, Engineering, or related field</li><li>3+ years of experience in System Administration / DevOps</li><li>Strong experience with AWS/Azure, Linux, and Windows environments</li><li>Solid understanding of networking and scripting (Bash, Python, PowerShell)</li><li>Database knowledge (MySQL, PostgreSQL, MongoDB)</li></ul>Preferred <ul><li>AWS / Azure / Linux / DevOps certifications</li><li>Experience with monitoring and logging tools</li><li>Knowledge of security standards (ISO 27001, CIS)</li></ul>Contact: 30530016 Apply: bdm@workforceqatar.comJob Type: PermanentWork Location: In person

SYSTEM ADMINISTRATOR

Public Cloud Services - PCS

<div>
 Job Title: Senior System Administrator
 
 
 Department: IT
 
 Location: El Sheikh Zayed, Giza
 
 Reporting To: Infrastructure Head
 
 Direct Reports: N/A
 
 
 
 
 
 
 
 Job Purpose
 
 
 The Senior System Administrator is responsible for designing, implementing, and maintaining the organization&rsquo;s IT infrastructure. This role ensures high availability, performance, security, and reliability of systems across on-premises and cloud environments, with a strong focus on virtualization, Windows &amp; Linux servers, Microsoft Azure, and Office 365.
 
 
 
 
 
 
 
 
 Key Duties &amp; Responsibilities
 
 
 Infrastructure &amp; Systems Management
 
 
 
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 Design, deploy, and manage virtualized environments using VMware, Hyper-V, or KVM.
 
 
 </li>
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 Install, configure, administer, and troubleshoot Windows and Linux servers.
 
 
 </li>
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 Monitor system performance and optimize configurations to ensure efficiency and stability.
 
 
 </li>
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 Ensure systems are updated with the latest patches, upgrades, and security updates.
 
 
 
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 </ul>
 Active Directory &amp; Identity Management
 
 
 
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 Manage Active Directory services, including user accounts, group policies, and permissions.
 
 
 </li>
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 Maintain secure access controls and directory services best practices.
 
 
 
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 </ul>
 Cloud &amp; Microsoft Services
 
 
 
 <ul>
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 Manage and administer Microsoft Azure services, including provisioning and configuration of cloud resources.
 
 
 </li>
 <li>
 
 Administer and support Microsoft Office 365 services to ensure optimal performance and user accessibility.
 
 
 
 </li>
 </ul>
 Security, Backup &amp; Recovery
 
 
 
 <ul>
 <li>
 
 Implement and maintain security controls, antivirus solutions, and access management policies.
 
 
 </li>
 <li>
 
 Develop, manage, and test backup and disaster recovery strategies to ensure data availability and integrity.
 
 
 
 </li>
 </ul>
 Database Administration
 
 
 
 <ul>
 <li>
 
 Manage and support MS SQL databases, including configuration, performance tuning, and backup strategies.
 
 
 
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 </ul>
 Documentation &amp; Collaboration
 
 
 
 <ul>
 <li>
 
 Create and maintain technical documentation for systems, configurations, and procedures.
 
 
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 Collaborate with other IT teams to support applications and infrastructure services.
 
 
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 Provide technical guidance and support to junior team members.
 
 
 
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 </ul>
 Troubleshooting &amp; Support
 
 
 
 <ul>
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 Diagnose and resolve hardware, software, and system issues on time.
 
 
 </li>
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 Provide advanced technical support to ensure minimal downtime.
 
 
 
 
 
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 </ul>
 Requirements
 
 
 Experience &amp; Qualifications
 
 <ul>
 <li>
 
 Education: Bachelor&rsquo;s degree in Computer Science, Information Technology, or a related field.
 
 
 </li>
 <li>
 
 Experience: Minimum of 5 years of hands-on experience in system administration, with strong exposure to virtualization, Windows, Linux, Azure, and Office 365.
 
 
 </li>
 <li>
 
 Certifications (Preferred):
 
 
 </li>
 <ul>
 <li>
 
 MCSE
 
 
 </li>
 <li>
 
 RHCE
 
 
 </li>
 <li>
 
 Azure Administrator Associate
 
 
 </li>
 <li>
 
 VMware Certified Professional (VCP)
 
 
 </li>
 </ul>
 </ul>
</div>

Senior System Admin

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