Gayan Jayathilaka

Cloud Network Architect | Network Engineer | Infrastructure | Cloud

Australia

About

Experience

  • Solutions Consultant at Citrus Solutions Australia
    Dec 2024 - Present · 1 yr 8 mos

  • Cloud Network Architect at Etisalat UAE
    Jun 2022 - Sep 2024 · 2 yrs 4 mos

    • Designed and implemented cloud network infrastructure solutions for private and telco clouds • Developed data center networking using VLANs, OSPF, ISIS, EVPN, VXLAN, and BGP on leaf-spine fabrics • Configured and upgraded Cisco Nexus 9k, ASR 1k, and Juniper EX/MX series platforms • Implemented software-defined networking solutions including VMware NSX-T and Juniper Contrail • Architected multi-cloud connectivity with Azure ExpressRoute • Automated infrastructure deployment using Python and Terraform • Managed Cisco SD-WAN and Fortinet FortiGate firewalls • Troubleshot complex network issues, collaborating with vendor TAC teams • Prepared HLDs and LLDs for cloud infrastructure projects • Optimized private cloud performance through strategic service migrations • Designed and onboarded new services in Azure and private cloud environments • Led cloud resource expansion projects based on capacity forecasts • Collaborated with stakeholders on service design decisions, ensuring security and high availability

  • Customer Support Engineer at Ericsson
    Sep 2020 - Jul 2022 · 1 yr 11 mos

    • Managed operations and maintenance of NFVI/SDN Infrastructure Network • Designed, implemented, and managed EVPN-VXLAN data center switch fabrics using Juniper MX series devices • Utilized virtualization technologies including RedHat OpenStack, OpenVirtualSwitch, KVM, SR-IOV, and DPDK • Implemented Data Center Networking solutions with ODL, OpenFlow, OVSDB, and VXLAN • Troubleshot customer issues related to NFVI, SDN, and IP technologies • Supported onboarding and integration of Virtual Network Functions (VNFs) on NFVI platforms • Integrated IP solutions and resolved issues with Data Center Gateway routers • Demonstrated hands-on experience with Juniper MX and EX series devices (MX 480, EX 4600, EX4300) • Managed issue escalation to Tier 2 support teams, ensuring resolution within SLAs • Identified and implemented enhancements to address NFVI platform limitations • Supported deployment of Ericsson NFVI Platform • Applied best practices in NFV deployment for service assurance, performance, and operability

  • Engineer - IP Core Network Operations at Dialog Axiata PLC
    Oct 2016 - Sep 2020 · 4 yrs

    • Demonstrated in-depth knowledge of OSPF, ISIS, MPLS, BGP, L2VPN, L3VPN, and MPBGP environments • Provided on-call support for deployment and troubleshooting of network issues of Metro Ethernet network, ISP Network and Enterprise Network. • Hands-on experience with Cisco (ASR 901, ME3600/3400, Catalyst, 7600, ASR 9000/1000) and Huawei (ATN 910I, ATN950B, NE5000, NE40) routers and switches • Managed Data Centre Core Network infrastructure, including Nexus 5K/9K switch platforms • Configured and maintained Palo Alto Networks firewalls (PA-3000, PA-5000, PA-7000 series) • Orchestrated network optimization activities with minimal outages in Metro Ethernet and Enterprise Core Networks • Implemented and maintained Linux servers for operational support (Syslog, TACACS+, FTP, RANCID) • Utilized network management systems like Cisco Prime, Huawei U2000, Cacti, and Nagios for analysis • Mitigated DDoS attacks in ISP Core Network • Managed issue escalation to support teams and vendors, resolving within defined KPIs • Oversaw spare inventory management

  • Engineer Trainee at Ceylon Electricity Board
    Nov 2015 - Jan 2016 · 3 mos