Keab Hailemariam

• I took on team lead responsibilities, serving as the main point of contact for cross-functional teams during critical migrations and maintenance windows.
• Led the next-gen AI training cluster network fabric deployment for technologies like RoCE (RDMA over Converged Ethernet) and DSF (Disintegrated Scheduled Fabric), providing L2 performance feedback using perf tests, CRC error analysis, and link flap monitoring.
• Deployed and managed over 15,000 OCP switches as part of Meta's Clos/Fat Tree fabric architecture, gaining deep hands-on experience with OpenBMC hardware, fiber optics, DAC cabling, and the zero-touch provisioning pipeline.
• Supported the backbone optical and IP infrastructure, including dark fiber splicing activities, and maintained systems such as Arista 7816/7808, Juniper PTX10K, and Ciena 6500 OADMs, RLS, and transponders.
• Led multiple greenfield deployments of 30 MW data center builds, working cross-functionally with site operations, facilities, and connectivity teams.
• Provided L1, L2, and L3 connectivity support, conducted physical layer audits, and developed a sound understanding of end-to-end data center builds, including networking, fiber, power, and cooling infrastructure.
• Contributed to Meta's 'always-on' delivery goals by acting as a first responder to SEV incidents, and supporting technical escalations within the network operations team.
• Played a key role in deploying and maintaining out-of-band management, electric facilities, and public service, corporate networks, including NTP, PTP, BMS, and DAS infrastructure.
• Developed a new internal operations tool to improve fallout ticket handling, leveraging Python, MySQL, and Thrift APIs, with comprehensive unit testing for smooth production deployment.

Managed two data centers, coordinating with state enterprises to ensure continuous service and network performance.

Led development of automation dashboard to enhance team efficiency.

• Administered firewall systems including Checkpoint, ASA, and Palo Alto for secure network operations.
• Utilized F5 GTM and LTM for network load balancing and optimized external DNS management.
• Employed Infoblox for effective internal DNS record management, ensuring seamless operations.
• Oversaw multiple VPNs through Cisco ASA to enhance secure remote access.
• Administered diverse switches and routers, including Nexus and Catalyst, to maintain infrastructure integrity.
• Developed automation solutions using Python, APIs, Flask, and Django to streamline processes.

• Led a team of engineers to manage multi-tenant customer networks, ensuring high availability and rapid response to incidents.
• Oversaw the design and implementation of new site connectivity, VoIP infrastructure, and firewall policies.
• Built automation workflows using Ansible and Python to reduce manual provisioning efforts, and improve consistency.
• Partnered with ISPs and vendors to troubleshoot WAN latency issues and optimize performance for latency-sensitive apps.
• Directed and configured Cisco UC solutions (CUCM, UCCX, CUBE), improving voice communication resilience, and integration with third-party services.
• Implemented routing architectures using BGP and OSPF to ensure stable connectivity across Juniper, Cisco, and HP platforms.
• Responded to escalations, and proactively resolved complex network and firewall issues.
• Deployed and maintained wireless and switching gear for enterprise customers, including detailed documentation and cutover planning.
• Supported VoIP deployments and performed packet captures to diagnose QoS, jitter, and RTP issues.
• Delivered detailed status updates to leadership, and contributed to strategic planning for service improvements.
• Administered Cisco Meraki wireless and unified communications platforms, including Informacast and eFax tools.
• Responded to service tickets and outages, providing fast restoration of access to essential educational services.
• Handled system-level configuration and updates for network-connected devices across multiple campuses.