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Senior Linux System Administrator

3D Diagnostix
Cairo, Egypt
Posted 1 year ago
16Applicants for1 open position
  • 9Viewed
  • 0In Consideration
  • 3Not Selected
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Job Details

Experience Needed:
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Skills And Tools:

Job Description

Our ideal System Administrator's objective is to maintain,
upgrade and manage our Servers, workstations,
hardware and networks. Also to ensure that our technology
infrastructure runs smoothly and efficiently. He will be
bs accountable for networks, servers' security and
uptime. The IT System Administrator has to design,
organize, modify and support the organization’s
computer systems.

Roles & Responsibilities:
• Ensure the security and efficiency of IT infrastructure, apply hardening and security patches to prevent hacking attempts
• Provision all infrastructure and servers using terraform and ansible scripts
• Commit for 99.9 uptime of internal and external servers
• Monitor and tune the performance of Amazon EC2 (ubuntu), RDS (MySQL) servers
• Monitor AWS services using amazon cloud watch
• Handle roles, groups, and permissions using amazon IAM
• Configure and fine-tune AWS infrastructure systems
• Maintain, troubleshoot, and tune Ubuntu servers
• Establish metrics and carefully monitor the utilization of AWS resources
• Manage DNS records
• Implement a backup policy, perform backups, and verify backups of internal and external data, aiming for zero data loss
• Maintain 99.9 uptime of internet connections
• create a disaster recovery plan, and update it regularly
• manage VPN, test servers and backups at Digital Ocean
• Respond to and resolve help desk requests
• Display key KPIs (Key Performance Indicators) on a dashboard
• Configure alerts and notifications for key metrics
• Use the ticketing system for all requests, respond in time as per SLAs
• Install and configure software, networking equipment and hardware
• Administrate infrastructure, including firewalls, databases, malware protection software
• Review application and server logs
• Manage network servers including VMware and amazon resources
• Maintain high available internal VMware servers
• Set up accounts, permissions and strong passwords policies
• Monitor performance and maintain systems according to requirements
• Monitor the system daily and respond immediately to security or usability concerns
• Troubleshoot issues and outages
• Ensure security through access controls, backups and firewalls
• Upgrade systems with new releases and models
• Develop expertise to train staff on system admin basic tasks (Linux commands, networking troubleshooting commands)
• Build an internal wiki with technical documentation, manuals and IT policies
• Develop and maintain SLAs (Service level agreements)
• Meet or exceed agreed-upon SLAs, in terms of response and fix time
• Keep a log of changes, and adhere to CM

Job Requirements

Certificates
Must have (the below or equivalent)
• RHCSA Red Hat Certified System Administrator
• RHCE - Red Hat Certified System Engineer
• VMware Certified Professional 6- Data Center Virtualization
Optional
• CCNA - Cisco Certified Network Associate
6-11 Expected years of experience in the above domain and technologies

SKILLS
• Advanced Linux (Ubuntu) system administration
• Terraform scripting
• Ansible scripting
• Advanced Bash shell scripting
• Proven Amazon AWS administration (EC2, IAM, RDS, S3)
• MySQL administration
• VMWare administration and high availability
• Network Administration
• Respond promptly to help desk requests after hours (be on call)

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