Core Network Engineer (Arista)

Systems Limited is seeking a skilled Core Network Engineer with specialized expertise in Arista technologies, data centre networking, migration, and hybrid cloud connectivity. The successful candidate will play a critical role in designing, implementing, and managing enterprise network infrastructure. This includes ensuring smooth data centre migrations, maintaining network reliability, and optimizing overall network performance to support business operations.

Key Responsibilities

- Design, implement, and manage Arista core network infrastructure, focusing on leaf-spine architecture, MLAG, VXLAN/EVPN, and Layer 2/3 networking protocols.
- Lead comprehensive data centre migration projects, including activities such as discovery, dependency mapping, cutover planning, and execution to ensure minimal downtime and risk.
- Architect and manage hybrid cloud connectivity solutions using platforms like Azure ExpressRoute, OCI FastConnect, and GCP Interconnect.
- Configure and optimize essential network protocols and technologies, including BGP, OSPF, VLANs, VRFs, QoS, load balancing, firewalls, and VPNs to maintain secure and efficient network operations.
- Conduct capacity planning, continuous network monitoring, firmware upgrades, and implement security hardening measures to safeguard infrastructure.
- Troubleshoot complex network issues promptly to maintain high availability and optimal performance levels.
- Maintain comprehensive technical documentation, including High-Level Designs (HLDs), Low-Level Designs (LLDs), runbooks, and change management records to support operational consistency and knowledge sharing.

Required Qualifications

- A minimum of 8 years of professional experience in core network engineering, data centre networking, or related infrastructure roles.
- Extensive hands-on experience with Arista EOS, CloudVision, and network fabric design and operations.
- Demonstrated success in leading data centre migrations, particularly in cutover planning and execution phases.
- Deep understanding of network protocols and technologies such as BGP, OSPF, VXLAN/EVPN, MLAG, and hybrid cloud connectivity solutions.
- Strong troubleshooting skills, including packet-level analysis to diagnose and resolve network issues effectively.
- Proficiency with network monitoring tools such as SolarWinds or Zabbix to ensure proactive network management.

Preferred Qualifications and Benefits

- Certifications such as Arista ACE-A/P, Cisco CCNP/CCIE, or Microsoft AZ-700 are highly desirable and will be considered an advantage.
- Experience with network automation using tools like Ansible or programming languages such as Python is a plus, supporting efforts to streamline network operations and improve efficiency.

This role offers an opportunity to work with cutting-edge technologies in a dynamic environment, contributing to critical infrastructure projects that support enterprise-scale operations. Candidates with a passion for network engineering and a proven track record in complex environments are encouraged to apply.