Hisham Elsharawy
System Engineer Network & Security
Experience
System Engineer Network & Security
Isringhausen GmbH
- Operation, maintenance and administration of the global network & security system landscape
- Troubleshooting and support in 2nd & 3rd levels and provide technical advice to other dept.
- Configuration of complex LAN/WAN/SD-WAN and WLAN network infrastructures (N5K, N9K, ASR 8000, Wireless Controller WLC9800, AP C91xx and VMware Velo Cloud)
- Control of external service providers as part of service and escalation management
- Implementation and monitoring of system updates (software upgrades, minor/major changes)
Senior Technical Consultant
HR Solutions GmbH
- Management of an infrastructure in the public sector for approximately 3,000 access points, 250 switches, and 80 firewalls
- Operation, ticket acceptance and processing, as well as forwarding to the on-site service partner for incident handling/troubleshooting
- Configuration and installation of network components (Nexus N9K, ASR 8000 series)
- Support for Juniper products, including access points (AP12, AP32E, AP43E), switches (EX2300-24MP, EX2300-48MP), and firewalls (SRX300, SRX340, SRX345)
- Creation and maintenance of documentation (operation manual)
Senior Technical Consultant, Mercedes-Benz Account
Infosys
- Providing technical support to Mercedes-Benz network in Sindelfingen with regard to its Cisco LAN, WAN/SD-WAN and WLAN networks
- Act as a L3 network escalation for network incidents and troubleshooting P1/P2
- Providing root cause analysis and technical consultancy to customer requests and solving various network connectivity problems using Cisco DNA
- Reviewing network changes in scope and performing risk analysis
Senior Network Consultant, Versatel 1&1 Account
STF Tele Consult GmbH
- Configuring and implementing various business customers’ connections (Internet, IP VPN) in Versatel network (Cisco ASR1K, ASR9K, C7600, ISR 4000 series, C880), Juniper MX960 and Huawei BRAS ME60/NE40/NE80E
- Implementing system components in IP, NGN, BNG/BRAS and MPLS backbone
- Technical support and troubleshoot various business customers incidents in MPLS/IP-backbone within agreed SLA times
Network Connectivity Expert
RWE Supply & Trading GmbH
- Providing network connectivity for all RWE group networks with the focus on LAN, WAN, WLAN and Cisco ACS, Palo Alto and Fortinet firewalls
- Operating Cisco ISE for RWE group Wi-Fi devices and users across various locations and configuring all necessary authorization policies
- Support connectivity project evaluations and provide support & remediation of connectivity architectural/technical issues to the business
Senior IP Network Engineer
Huawei Technologies Deutschland GmbH
Delivered projects and technical solutions for Huawei’s customers such as:
Volkswagen Financial Service: Design and implement data center fabric (VXLAN, BGP EVPN, M-LAG) using Huawei CloudEngine switches (CE6800 and CE12800 in leaf, spine and edge topology)
Stadtwerk Mersburg, Ropa: Design and implement E2E ISP network via NE40/ME60 BRAS with redundancy using core MPLS and BGP for VDSL IPoE/PPPoE dual stack IPv4/IPv6 users via NAT444 & DS-Lite
Enhancing post-sales support in the field of IP Datacom products to Huawei carriers, partners and enterprise customers; support product validation, bidding and rollout
Implementing proof of concept tests for Huawei’s customers using Spirent tool
Investigate, isolate and drive problems reported by Huawei customers to a closure
Output various documentations including HLD, LLD, problem analysis report etc.
Deliver technical presentations/workshops and training for customers and partners
2nd Line Network Engineer
Vodafone Group Services GmbH
Operation 24/7 of all network related components which include routers, switches, Infoblox for Vodafone office networks, and WLAN infrastructures
Manage incidents, on-call support and changes 24/7; fix incidents within the agreed SLAs
IP management for all Vodafone office network via Infoblox in different clusters
Perform a proactive maintenance by executing IOS image upgrade to various Cisco models such as Cisco C2960G, C3750, 4500, 6500, 7600 series across multiple office locations
Guarantee SLA and OLA fulfillment end-to-end
Implementing Vodafone Germany LAN refresh project which includes:
Replacing all obsolete LAN of Vodafone Germany office network with Cisco components and configuring new features such as IPv6 and 802.1x authentication
Rolling out WLAN access points for corporate, guest users and performing all necessary WLC configuration
Mobile & Data Service Engineer
Vodafone Group Services GmbH
- Troubleshooting Vodafone customers configured in MPLS IP backbone international core network (Juniper MX series, Cisco XR series) connected with Option A/B
- Monitoring the signaling roaming traffic, ensure 24x7 network alarms surveillance and react on E2E service thresholds alarms/incidents based on agreed service KPIs
- Monitoring unified communication customers using Cisco Unified OM/SM
- Prepare technical reports on a monthly basis regarding agreed SLA KPIs
- Participating in Vodafone International projects such as Vodafone IP Exchange, Vodafone One Net Global Enterprise, M2M and IPVPN Verizon
Fixed Network Engineer
VodafoneEgypt
- Supporting corporate customers regarding their MPLS VPN & leased lines from customer CE LAN to Vodafone MPLS network
- Troubleshooting of customer problems (VPN, Internet) and identifying the root cause
- Solving configuration problems related to routers (Cisco, Alcatel, 3com)
- Fulfilling customer configuration requests from their sides (i.e. CE routers)
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Telecommunication (14.5 years), Automotive (3.5 years), Manufacturing (1.5 years), Government and Administration (1.5 years), and Energy (1 year).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (19 years), Operations (9.5 years), and Customer Service (5 years).
Summary
+18 years of professional experience within the design, implementation and operation of IP data networks. Delivering various IP projects to a wide range of customers from small/Medium Enterprise to ISP/Carrier and data centers environment. Providing workshops and Proof-of-Concept tests.
Skills
- Routing, Switching, Cisco Catalyst/router, Cisco Ios Xr/xe, Cisco Asa, Palo Alto, Huawei Vrp, Vss, Bgp, Evpn, Mpls, Mpls Te, Ospf, Vpn, Vrf, Vpls, Security, Ipsec, Stp, Snmp, Ppp, Pppoe, Ipoe, Wireless, Vlan, Tcp/ip, Ipv6, Firewalls, Dslam, Bras, Sip, L2tp, Osi, Vrrp, Hsrp, Xdsl, 802.1x, Qos, Qinq, Vxlan, Aaa, Tacacs+, Radius, M-lag, Internet Protocols (Http/https, Dns, Dhcp…etc)
- Microsoft Office Visio, Microsoft Office: Ms Word, Excel, Power Point, Outlook Express.
- Excellent Skills In Matlab For Communication, Latex Editor.
Languages
Education
University of Duisburg-Essen
Master of Science, Computer Science and Communication Engineering · Computer Science and Communication Engineering · Essen, Germany · Cumulative Grade: 2.3; MSc Thesis Grade: 1.3
Zagazig University
Bachelor of Science, Electronics and Communications Engineering · Electronics and Communications Engineering · Zagazig, Egypt · Cumulative Grade: Good (74.28%); BSc Graduation Project Grade:
Certifications & licenses
CCDE-written.
CCIE-Service Provider# 60634
CCIP- BGP/MPLS/QoS
CCNA/CCNP- R&S/Enterprise
Cisco Certified Specialist - Enterprise Core
Cisco Certified Specialist - Service Provider Core
German Driving License - Class B
HCIE-R&S #5687
HCNA/HCNP-R&S Fast Track
Profile
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