Network Administrator Jobs at Sierra in Colombo, Western Province

Published 10 months ago

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Sierra company opens jobs for Network Administrator positions in the Western Province region. The type of work we provide is Full-time.

The criteria for the employees we need are having common and adaptable (for details, you can ask the company) skills with beginners or seniors experience, as well as employees who are honest, disciplined and responsible.

The Headhunters company itself is engaged in sejenis, of course if you are interested in applying for this company, you can register immediately.

Job Information

Position:Network Administrator
Region:Western Province, Colombo - Western Province
Employment Type:Full-time

Job Description

The ideal candidate is responsible for for maintaining and managing our organization’s computer networks, ensuring their stability, performance, and security. You will play a crucial role in the design, implementation, and maintenance of our network infrastructure while providing technical support to end-users.


1.    VMware Infrastructure Management.

o  Design, implement, and manage the organization’s VMware virtualization infrastructure.

o  Deploy and configure VMware ESXi hosts, vCenter Server, and associated virtualization components.

o  Monitor and optimize virtual infrastructure performance, including CPU, memory, storage, and network utilization.

o  Implement backup and disaster recovery solutions for virtual machines (VMs) to ensure data integrity and business continuity.

o  Manage VM provisioning, migration, and decommissioning processes.

2.    Network Infrastructure Management:

  • Design, implement, and maintain the organization’s computer networks, including local area networks (LANs), wide area networks (WANs), and wireless networks.
  • Monitor network performance and ensure its stability and reliability.
  • Conduct regular network assessments and audits to identify areas for improvement and implement necessary changes.
  • Collaborate with other IT team members to plan and implement network upgrades and expansions.
  • Configure and maintain network hardware and software components, such as routers, switches, firewalls, and virtual private networks (VPNs).

3.    Network Security:

  • Implement and enforce network security measures to protect the organization’s systems and data from unauthorized access, viruses, and other security threats.
  • Monitor network traffic for any suspicious activities and investigate security breaches or incidents.
  • Manage user access and permissions, ensuring appropriate levels of network access based on job roles and responsibilities.
  • Stay up to date with the latest security trends, vulnerabilities, and best practices, and implement necessary security patches and updates.


  • HND in computer science, information technology, or a related field (or equivalent work experience).
  • Proven experience as a Network Administrator or in a similar role.
  • In-depth knowledge of network protocols, standards, and technologies (e.g., TCP/IP, DNS, DHCP, VLANs, VPNs).
  • Strong understanding of network security principles and best practices.
  • Hands-on experience with network hardware and software, including routers, switches, firewalls, and network monitoring tools.
  • Proficient in network troubleshooting and problem-solving techniques.
  • Familiarity with network management and monitoring systems.
  • Excellent communication and interpersonal skills.
  • Ability to work independently and collaborate effectively in a team environment.
  • VMware Certified Professional – (Data Center Virtualization) preferred.
  • Other Relevant certifications (e.g., CCNA, RHCSA, VCP-DCV.) are a plus.


  • Bonus for overtime
  • Gain experience
  • Comfortable work environment

Job Application Information

The information we provide above may be updated suddenly, please keep looking for complete information via the "Apply Now" button or on the official website of the company Sierra, so as not to find unwanted events ^_^.

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Company Information



Sierra is an international telecommunications and information technology company that provides services for businesses and consumers. Founded in 1992, Sierra offers a wide range of innovative products and services, including mobile phones, internet and digital services, broadband networks, managed services, and software. Sierra is committed to delivering the highest quality customer service and creating long-term sustainable growth for its customers by providing the best possible network, technology, and services. With the combination of Sierra’s comprehensive network, its proven technology, and experienced customer service representatives, Sierra is the perfect partner for companies and individuals who need reliable and comprehensive telecommunications and IT solutions. From basic service to enterprise-level solutions, Sierra offers the latest in telecom and IT solutions to ensure that your organization receives the best possible service.

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