System administrator: Charging systems – monitoring and performance

Organization: Not specified in the provided job advert
Location: Dar es Salaam

Role purpose

We are looking for a System Administrator who will ensure that charging systems and their integrated components operate efficiently. The role involves maintaining infrastructure, including servers, storage, and software systems, to ensure they operate reliably, securely, and at peak performance.

Key accountabilities and decision ownership

System maintenance

• Execute and automate daily system health checks.
• Ensure service and system availability is maintained at 99.999%.
• Quickly identify faulty systems or potential failures.
• Recommend proactive and preventive fixes before problems occur.

Security and monitoring

• Monitor system performance regularly.
• Implement security measures to prevent breaches.
• Conduct regular security testing.

Data backup and recovery

• Establish and manage automated backups.
• Ensure data integrity and disaster recovery capabilities.
• Plan and execute backup recovery plans.
• Sign off for TRP validation.

User management

• Create, update, and manage user accounts.
• Manage permissions and access rights.
• Automate the review process for application, database, and operating system users.

Troubleshooting

• Analyze customer complaints using available tools.
• Provide responses within the agreed service level agreement.

Documentation

• Maintain comprehensive documentation of:
  • System configurations
  • Procedures
  • Service records

Test creation and execution

• Create detailed, comprehensive, and well-structured test plans and test cases.
• Ensure proper testing for all released patches and fixes.
• Ensure tests are well created for new products and MPS.

Monitoring and optimization

• Utilize tools such as:
  • Prometheus
  • Grafana
  • ELK stack
• Ensure carrier-grade performance, scalability, and 24/7 reliability.

Customer and vendor support

• Ensure all suppliers provide services as per agreement.
• Ensure suppliers comply with all policies and company standards.
• Provide responses to customer queries within the agreed SLA.

Required skills and qualifications

Technical expertise

• Proficiency with Linux operating systems.
• Experience with virtualization technologies, including:
  • VMware
  • Hyper-V
• Knowledge of networking protocols, especially TCP/IP.

Cloud and virtualization

• Experience with:
  • OpenStack
  • VMware
  • KVM
  • Kubernetes
  • OpenShift
  • Rancher

Problem-solving and troubleshooting

• Strong troubleshooting skills.
• Ability to resolve customer and configuration problems under pressure.
• Strong analytical skills to determine root causes.

Security awareness

• Knowledge of:
  • Firewalls
  • Data protection policies
  • Cybersecurity best practices

Communication skills

• Ability to explain technical issues to non-technical staff.
• Ability to provide effective technical support.

Education and experience

• Bachelor’s degree from a recognized university in one of the following fields:
  • Computer science
  • Information technology
  • Business information technology
  • Telecommunication engineering
• 2 to 5 years of working experience in a Linux-based environment and cloud-based platform.

Automation and scripting

• Experience with scripting languages for automation, such as:
  • PowerShell
  • Bash

Ability to work with low supervision

• Ability to work with minimum supervision.
• Ability to meet strict deadlines.