Esther Nabitosi
Sydney,Australia
Summary
Results-driven Network Engineer with 10 years of expertise deploying and maintaining LAN and WAN infrastructure.
Esther joined the DXC (formerly HPE) graduate program as an engineering graduate in September 2013 then transitioned into the Data Center Networking team in September 2015 as a Network engineer. In this role, Esther managed the APJ client network documentation and decommission before being promoted to Senior Professional Network Engineer. Esther continues to be a dedicated technology professional with a strong track record of accurately translating client requirements into functional network design solutions for APJ clients including but not limited to AMP Ltd, Sydney Airport, and Westpac whilst ensuring that DXC’s engineering best practices are upheld.
Overview
10
10
years of professional experience
1
1
Certification
Work History
- Hardware installs and configuration of over 30 Aruba switches - for hosted switch port expansions and to support client out of band management.
- Current
- Supported the Life Cycle Management team to perform scheduled hardware refresh and virtualization of 10 leveraged and dedicated security devices across the Asia Pacific DXC datacenters.
- Performed software and hardware decommission of legacy cisco infrastructure in colocation datacenters around Australia as an effort to mitigate cost by utilizing DXC owned datacenters.
- CMDB+ (Configuration Management Database) housekeeping to reflect hosted switch port/IP utilization, client billing and client connectivity documentation for my team.
- Supported on the APJ R80 Management migration and troubleshooting to manage checkpoint FWs.
- Completed a network transformation project for Origin account to redesign client Secure Services Network connectivity to replace check point D1s with a standard virtualized firewall model.
- Implemented client data center transformation and transition to the updated Data Centre Network Architecture
- Clients include Elder, VicRoads and Downer.
- Coordinated and implemented network changes to allow future server expansion for clients like MSD in New Zealand, Proctor & Gamble in Singapore and Westpac Australia.
- Successfully designed a solution for CSG client to connect infrastructure hosted in the Global Switch and Eastern Creek datacenters to the DXC Virtual Private Cloud Service offering.
- Planned, coordinated and implemented complex network changes within customer specified deadlines whilst adhering to ITIL Standards
- This included liaising with the customer, third party suppliers, vendors and partners to ensure minimal disruption to the customer’s day-to-day business operations, and the provision of a seamless, coordinated delivery of services
- Clients include Optus, Caltex, BOQ, Superpartners to name a few.
- Provided remote technical support for various HPE Asia Pacific and Japan clients in the leveraged DC space via delivery processes including Incident Management, Configuration Management, and Change Management
- Clients include Telstra, Japan Tobacco, Boral, Cathay Pacific.
- Successfully designed a solution for Seadrill client infrastructure hosted in the Singapore to access the HPE Leveraged Internet Services.
Senior Professional Network Engineer
DXC Technology
08.2021 - Current
- DXC Cloud connect implementation for client access to AWS Direct Connect
- Clients include AMP LTD and DXC Connect
- Project tasks include the establishing a new WAN Connectivity Layer (WCL) connection and a new virtual circuit connect on the applicable cross connect vendors portal.
08.2021 - Current
- Hamilton DC HPE Refresh Program from traditional hierarchical topology using a Core, Distribution and Access to a Spine and Leaf topology
- Project tasks include the creation of BOMs, Engineering Work Order/PTW/cabling patch sheets, LLD network designs, baseline configuration/implementation, client migrations/troubleshooting with minimal outage and decommission.
Technical Specialist, Network Design - DXC Engagement
AT&T Global Network Services Australia
11.2019 - 07.2021
- Project based role to develop plans and/or design network requirements and standards
- Translating customer requirements into functional specifications and Vendor selection
- Manage hardware installation and configuration, provide technical support to project management and customers external to assist implementation
- Estimates cost, plans projects, plan implementation, operation, and maintenance of product deployment for network upgrades
- Designed VPN and permanent link connectivity solutions for Sydney Airport, Queensland Rail and TAL clients to access the management and monitoring tool hosted in the AWS cloud via the DXC Secure Services Network.
Client Network Operations – DXC Engagement
AT&T Global Network Services Australia
04.2018 - 11.2019
- Project based role to serve as primary support of network operations by managing customer devices and end-to-end services, identifying sources of problems, and resolving configuration issues
- Respond to and implement client requests and notify them of network problems and the impact on customer's business
- Act on client's behalf in handling network problems and changes
- Engage equipment and service vendors to support network operations
- Facilitated and implemented NZ data center transformation for NZ based clients to access the DXC Secure Services Network monitoring and management services via the Ultimo Global switch DC.
Network Engineer
Hewlett Packard Enterprise
09.2015 - 03.2018
- Project based role to serve as primary support of network operations by managing customer devices and end-to-end services, identifying sources of problems, and resolving configuration issues
- Respond to and implement client requests and notify them of network problems and the impact on customer's business
- Act on client's behalf in handling network problems and changes
- Engage equipment and service vendors to support network operations
- Designed a client to Secure Services Network connectivity solution for Micro Focus in Singapore with dedicated management and monitoring services for Micro Focus client in Singapore.
Graduate Network Engineer
Hewlett Packard Enterprise
05.2014 - 09.2015
- Prepared network diagram documentation for Asia Pacific and Japan HPE clients detailing connectivity to the leveraged Secure Services Network hosted across HPE datacenters using Microsoft Visio
- Documented client IP addresses, vlan allocations and DNS registrations daily
- Performed soft and hardware decommissions of enterprise/legacy clients across HPE Asia Pacific and Japan data centers along with updating leveraged Hosted Switch Port infrastructure utilization via CMDB+ (Configuration Management Database) to reflect client billing.
Education
Bachelor of Engineering in Telecommunication Engineering -
Macquarie University
North Ryde, NSW04.2013
Skills
- Amazon Web Services (AWS) Direct Connect (1 year)
- Detailed knowledge of Data Centre and Network Infrastructure and Systems (7 years)
- Network Infrastructure Design (7 years)
- Cisco Router and Switches (7 years)
- HPN Routers and Switches (7 years)
- MS Visio (7 Years)
- Systems used: NetSRM, QMS, Service Manager/ServiceNow, CMBD, CMR, IPAM, Aries/Aldea (7 Years)
- Structured cabling and patching (7 Years)
- Project management skills (7 years)
- Written and oral communication skills (7 years)
- Collaborative working (7 years)
- Technical Troubleshooting
- IP Addressing and Subnetting
- MPLS Routers
- Equipment Configuration
- Network Configuration
- LAN Switching Technologies
- Documentation Writing
- Change Management
- Datacenter Network Implementations
- Layer-2/3 Protocols
- Hardware Installation
- Data Center Networking
- EIGRP Routing
- Network Troubleshooting
Certification
AWS Partner: AWS Cloud Practitioner Essentials (Classroom)-2021
Languages
English
Timeline
Senior Professional Network Engineer
DXC Technology
08.2021 - Current
08.2021 - Current
Technical Specialist, Network Design - DXC Engagement
AT&T Global Network Services Australia
11.2019 - 07.2021
Client Network Operations – DXC Engagement
AT&T Global Network Services Australia
04.2018 - 11.2019
Network Engineer
Hewlett Packard Enterprise
09.2015 - 03.2018
Graduate Network Engineer
Hewlett Packard Enterprise
05.2014 - 09.2015
- Current
Bachelor of Engineering in Telecommunication Engineering -
Macquarie University
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