Job Vacancies at Dotmac Technologies LTD

Job Description

We are seeking a highly skilled Linux System Administrator to manage and maintain our Ubuntu-based server infrastructure. The ideal candidate will be responsible for ensuring the stability, security, and performance of our servers while implementing best practices for system administration, automation, and monitoring. This role requires strong expertise in Linux server management, networking, and troubleshooting, with a focus on scalability and reliability.

Key Responsibilities:  

• Install, configure, and maintain Ubuntu servers in a production environment.
• Monitor and optimize system performance, including CPU, memory, storage, and network resources.
• Implement and manage server security, including firewalls, access control, and vulnerability patching.
• Automate routine tasks and server deployments using scripting and configuration management tools.
• Ensure system backups and disaster recovery solutions are in place and tested regularly.
• Manage network services such as DNS, VPN, and SSH for secure access and connectivity.
• Troubleshoot and resolve hardware and software issues, including network connectivity and performance problems.
• Maintain and monitor server health using appropriate monitoring tools, responding to alerts and taking proactive measures.
• Document system configurations, procedures, and policies for future reference and team use.
• Collaborate with development, operations, and support teams to ensure seamless delivery of services.

Requirements

• 1-2 years proven experience as a Linux/Ubuntu System Administrator in a production environment.
• Strong knowledge of Linux system internals, performance tuning, and troubleshooting.
• Proficiency in scripting languages such as Bash, Python, or Perl for automation.
• Experience with managing network services, firewalls, and security best practices.
• Solid understanding of virtualization technologies.
• Familiarity with system monitoring and performance management tools.
• Excellent problem-solving skills and the ability to work under pressure.
• Strong communication skills for collaborating with teams and documenting procedures.

Preferred Qualifications:  

• Experience with configuration management and automation tools.
• Familiarity with cloud environments and infrastructure management.
• Certifications in Linux system administration or related fields.

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Job Description

The Fiber Technician is responsible for the installation, maintenance, and troubleshooting of all fiber optic networks, including both customer connections and backbone infrastructure. This role involves deploying and maintaining fiber optic cables, splicing, testing signal quality, and providing technical support for both customers and network infrastructure. The technician ensures the stability and performance of the entire fiber optic network.

Key Responsibilities:  

Installation and Setup:

• Install fiber optic cables, connectors, and Optical Network Terminals (ONTs) at customer premises and network distribution points.
• Deploy fiber optic cables along network backbone infrastructure, ensuring proper routing and securing.
• Perform fiber splicing and ensure correct termination at customer sites and core network points.
• Test and verify fiber optic connections using OTDR and Power Meters to confirm network performance.

Maintenance of Fiber Links:

• Perform regular maintenance on the entire fiber optic network, including backbone links, distribution nodes, and customer connections.
• Inspect and repair fiber optic cables, connectors, and equipment at core locations, such as Points of Presence (PoPs) and Fiber Distribution Hubs (FDH).
• Ensure optimal signal quality and network performance across all fiber links, conducting scheduled inspections and addressing any degradation or signal loss.
• Respond to network outages, fiber cuts, and infrastructure issues to restore connectivity swiftly.

Troubleshooting and Repairs:

• Diagnose and resolve fiber network issues, including signal loss, fiber breaks, and hardware failures.
• Repair damaged cables, reconfigure ONTs, and troubleshoot customer or infrastructure-related problems.
• Collaborate with the Network Operations Center (NOC) to troubleshoot more complex issues that affect core infrastructure or multiple customer connections.

Customer Service and Support:

• Engage with customers during installations and service calls, providing guidance on using their network services and resolving basic technical issues.
• Conduct post-installation tests to ensure customer satisfaction and document results.

Infrastructure Documentation and Reporting:

• Maintain accurate records of fiber links, including installation routes, splicing points, and testing results for both customer and backbone infrastructure.
• Update the network management system with changes made during maintenance or repairs.
• Prepare detailed reports after maintenance activities, including test results, repair actions, and any recommended future work.

Safety and Compliance:

• Adhere to all safety standards when working on customer sites and along network infrastructure, including proper use of Personal Protective Equipment (PPE).
• Ensure all installations and maintenance tasks comply with local regulations, company policies, and best practices for fiber optic work.

Work Environment:  

• Primarily fieldwork at customer sites, network infrastructure locations, and along fiber optic routes.
• May require working in outdoor conditions, at heights, and in confined spaces.
• Use of safety equipment.

Requirements

• Education: Diploma in Telecommunications, Networking, or related fields. Certifications in fiber optic installation, splicing, and testing are preferred.
• Experience: 2-4 years of experience in fiber optic network installation, maintenance, and troubleshooting, with experience managing core infrastructure links.

​Technical Skills:

• Proficient in fiber optic splicing, termination, and testing using OTDR and other tools.
• Strong knowledge of fiber optic backbone infrastructure, including Points of Presence (PoPs) and Fiber Distribution Hubs (FDH).
• Ability to read technical diagrams, schematics, and splicing maps.
• Familiarity with network management and ticketing software.