Hisham E.
System Engineer Network & Security
Experience
Jan 2024 - Aug 2025
1 year 8 monthsLemgo, Germany
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)
May 2023 - Oct 2024
1 year 6 monthsHanover, Germany
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)
Jan 2022 - Sep 2023
1 year 9 monthsDüsseldorf, Germany
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
Apr 2019 - Dec 2021
2 years 9 monthsRatingen, Germany
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
Apr 2018 - Mar 2019
1 yearEssen, Germany
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
Feb 2015 - Mar 2018
3 years 2 monthsDüsseldorf, Germany
Senior IP Network Engineer
Huawei Technologies Deutschland GmbH
- 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 (POC) 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
Nov 2012 - Jan 2015
2 years 3 monthsDüsseldorf, Germany
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 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
Jul 2009 - Oct 2012
3 years 4 monthsDüsseldorf, Germany
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
Jun 2006 - Jun 2009
3 years 1 monthEgypt
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)
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.
Languages
Arabic
NativeGerman
AdvancedEnglish
AdvancedEducation
University of Duisburg-Essen
Master of Science in Computer Science and Communication Engineering, International Studies in Engineering · Computer Science and Communication Engineering · Germany · 2.3
Zagazig University
Bachelor of Science in Electronics and Communications Engineering · Electronics and Communications Engineering · Egypt
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
HCIE-R&S #5687
HCNA/HCNP-R&S Fast Track
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