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Rudolf Eggelbusch-Datacenter Engineer, Network & Security Administrator

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Ratingen, Germany

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Experience

Sep 2024 - Present
Cologne, Germany

Datacenter Engineer, Network & Security Administrator

International insurance group

Position Summary
Datacenter Engineer, Network & Security Administrator at International insurance group
Industries
Insurance
Business Areas
Information Technology
  • Operation and further development of the network and security infrastructure.

  • Monitoring, analysis and resolution of network and security incidents.

  • Cross-department collaboration with other specialist teams for operations, further development and reporting.

  • Firewall vulnerability analysis.

  • Firewall rule approvals.

  • Troubleshooting IP communication issues in the network and firewall infrastructure.

  • Security-critical IT infrastructure, processing of personal data, compliance with legal regulations.

  • Products: Palo Alto Networks Firewalls, Cisco ACI, Checkpoint Firewalls, F5

  • Technologies: SDN, SDWAN, Cisco EPIC, Cisco ACI

Jul 2023 - Jul 2024

F5 migration project as sub-project lead/consultant / Cybersecurity Consultant

Healthcare, content and datacenter provider for health insurance companies

Position Summary
F5 migration project as sub-project lead/consultant / Cybersecurity Consultant at Healthcare, content and datacenter provider for health insurance companies
Industries
Healthcare
Information Technology
Business Areas
Information Technology
Project Management
  • Analysis of the current state of 500 virtual servers and development of various migration scenarios to the new F5 load balancer infrastructure.

  • Sizing calculations, capacity analysis. Reporting as sub-project lead.

  • Adjustment of WAF policies (Web Application Firewall).

  • Vulnerability analysis.

  • Firewall rule approvals.

  • Troubleshooting IP communication issues on Palo Alto FW.

  • Products: F5 LTM VPR-B2250, F5 5200v, F5 R12600, Journeys tool, BIG‑IP Application Security Manager (ASM), F5 Release V14 & V17, Palo Alto Networks Firewalls

Oct 2022 - May 2023

Network and Security Administrator (Firewall Rules / VPN Access)

Municipal utilities NRW

Position Summary
Network and Security Administrator (Firewall Rules / VPN Access) at Municipal utilities NRW
Industries
Utilities
Business Areas
Information Technology
  • Technical support and third-level support for LAN networks / firewall security / VPN access.
  • Administration of VPN access.
  • Setup, revision and verification of existing firewall rules.
  • Coordination of LAN and security service providers.
May 2022 - Jun 2023

Security Architect / Firewall Auditor

German Glasfaser

Position Summary
Security Architect / Firewall Auditor at German Glasfaser
Industries
Telecommunication
Business Areas
Audit
Information Technology
  • Internal firewall auditor.

  • Overall review and assessment of firewall rules with the goal of raising the security level of the IT/ISP areas.

  • Recording all audit findings/events and improvement suggestions with specialist departments.

  • Re-certification of existing firewall rule sets, establishment of re-certification and request processes in FW administration/change requests.

  • Reporting on issues and findings related to firewall rules during the audit.

  • Showing possible solutions to prevent security threats.

  • Products: Fortinet Firewalls, Forti Manager, Forti Analyzer, Sophos Firewall, Palo Alto Networks Firewall, Shorewall Firewall

Nov 2020 - Sep 2022

Sub-project lead / Security Consultant - Worldwide Firewall Rollout

Bayer/Arlanxeo

Position Summary
Sub-project lead / Security Consultant - Worldwide Firewall Rollout at Bayer/Arlanxeo
Industries
Chemical
Manufacturing
Business Areas
Information Technology
Project Management
  • Provision of a timely and technically suitable successor solution for the plant and office firewall solution and rollout for all ARLANXEO locations (based on Fortigate).
  • Provider coordination.
  • Technical decision papers.
  • Rollout plan.
  • Review and adjustment of 150 existing firewall configurations.
  • Re-certification of existing firewall rules.
  • Creation of a master security policy for all firewalls.
  • Project reporting.
Sep 2019 - Sep 2020
Remote

Network/Security Consultant – Deputy Project Lead (VPN Access – LMS)

Bayer/Currenta

Position Summary
Network/Security Consultant – Deputy Project Lead (VPN Access – LMS) at Bayer/Currenta
Industries
Chemical
Pharmaceutical
Business Areas
Information Technology
Operations
Project Management
  • Provision of a timely and technically suitable successor solution for: SiZe - UMTS-VPM LMS Access, SiZe - Remote Access Points for LMS.
  • Pilot project “Specific VPN Access”, solution design with technical service provider TCS.
  • Provider control / service management of the service providers ITK/NetSit and TCS.
  • Aruba Wireless Access Points.
  • Network expansions.
  • LAN & WAN connections to campus and datacenter.
  • Creating and reviewing FW/VPN security policies.
  • Creation of an IT process with Signavio.
Jun 2018 - Sep 2019
Duisburg, Germany

Network Architect

Stadtwerke Duisburg NRW

Position Summary
Network Architect at Stadtwerke Duisburg NRW
Industries
Telecommunication
Business Areas
Information Technology
Procurement
  • Technical support for the Europe-wide tender “City Netz” MPLS network 100 Gbit as One Network.

  • Saving the SDN layer and merging all networks as “One Network” based on MPLS.

  • Creation of network plans / fiber optic route planning (path diversity) / checking technical tender texts.

  • Review of bills of materials and evaluation of manufacturer offers.

  • Consulting on the use of MPLS and Metro-LAN technologies.

  • Participation in manufacturer workshops and testing equipment for possible use in the project.

  • Creation and pilot test of a QoS concept for rollout in the WAN network.

  • Creation of an L2 Virtual Etherlink template for future MPLS L2 services with QoS.

  • Setup of an L2 QoS pilot link in the Duisburg city area between two hospitals.

  • Planning of GPON deployment (Huawei) for internet access in the new development area of Duisburg.

  • Technical assessment / feasibility analysis.

  • Capacity planning (Data-MUX) per apartment block, etc.

  • Workshop with Huawei – clarification on technical implementation and security questions.

  • Products: Huawei routers, GPON routers, Cisco routers, Cisco ACI.

  • Technologies: MPLS, LDP, BGP, Metro-LAN, Cisco ACI, VPWS, VRF, QoS, GPON, provider WAN solutions, MPLS-L2-VLAN.

Dec 2017 - Jun 2018
Düsseldorf, Germany

Security Consultant

Metro Hauptverwaltung

Position Summary
Security Consultant at Metro Hauptverwaltung
Industries
Retail
Business Areas
Information Technology
  • Analysis and approval of security policy rules for the Metro Group worldwide.

  • Independent preparation and activation of new security policies or commissioning an external security team, changes according to ITIL standard.

  • Products: Algosec Analyzer, Check Point 61000 Appliance, Check Point Smart Domain Manager R80, Check Point SmartLog R.80.

  • Technologies: Security Access Control / VPN Remote Access, Web Security Application Gateway / SSL Application Security Gateway from Check Point.

Jan 2017 - Dec 2017
Cologne, Germany

Datacenter Engineer

AXA Versicherung

Position Summary
Datacenter Engineer at AXA Versicherung
Industries
Insurance
Information Technology
Business Areas
Information Technology
Operations
  • Migration of several hundred VPN connections from Check Point to Cisco ASA 5555.

  • Analysis of the current state, definition of updated security standards for VPN.

  • Planning and execution of migrations with external partners.

  • Products: Algosec Analyzer, Check Point 61000 Appliance, Check Point Smart Domain Manager R77-20, Check Point SmartDashboard R77-20, Check Point Virtual System Firewall VSX R76, Check Point SmartLog, Cisco ASA 5555 V9.4, F5 BIG-IP V12.1.2, Cisco Nexus 7000/5000, Netscout nGenius.

  • Technologies: SDN / Cisco EPIC, Cisco ACI VPN IKv2.

Jan 2015 - Oct 2016
Essen, Germany

IP Network Planner

Thyssenkrupp

Position Summary
IP Network Planner at Thyssenkrupp
Industries
Manufacturing
Business Areas
Information Technology
Operations
  • WAN MPLS migration – 300 sites worldwide.

  • Collection, consolidation and evaluation of operations and planning data as well as existing documentation.

  • Analysis of device configurations (switches, routers), comparison with the existing documentation.

  • Reverse engineering of undocumented physical and logical connections.

  • Identification of logical dependencies and possible obstacles for the migration.

  • Planning and implementation (creation of configuration guidelines, communication matrix and routing tables).

  • Verification, adjustment and re-certification of firewall rules per TK site.

  • Coordination and monitoring of implementation steps between operations departments and MPLS provider.

  • Idea and creation of a requirements specification for the UNAT tool (User-Acceptance Tool), successfully used for automated tests.

  • Technologies: TCP/IP, firewalling, routing, UNAT, ITIL changes.

Jan 2013 - Jan 2015
Germany

Third Level Support / Network Designer

Evonik

Position Summary
Third Level Support / Network Designer at Evonik
Industries
Chemical
Business Areas
Information Technology
  • Third Level Support / Network Design Services / Network Design Verification.

  • Network Designer: New secure worldwide OOB-Access Solution (All IP).

  • Design support for international multi-provider MPLS network.

  • Replacement of old Cisco switching network for European and ASEAN locations with Cisco 3650 switches; zero failure, zero downtime approach.

  • Products: Cisco ASR Router, Cisco 3650, FWSM, IDSM, CSE.

  • Technologies: Mutual OSPF redistribution, BGPv4, BGPv4 route filtering, BGPv4 communities, large-scale MPLS inter-VRF routing, advanced routing, IOS-XE, IOS-XR, IPv6 introduction & migration, IPv6 tunnel, IPv6 peering.

Jan 2013 - Dec 2013

Project Engineer

HP

Position Summary
Project Engineer at HP
Industries
Information Technology
Business Areas
Information Technology
  • Migration of extensive firewall rules to new Check Point firewall systems.

  • Vulnerability scanning with freeware and commercial products.

  • Penetration testing according to BSI procedures.

  • Products: Cisco ASA, Check Point HP-D2, HP-D8, VMware, Check Point R70 cluster, Check Point VSX, Multi-Domain Manager, HP ProCurve switches.

  • Technologies: Security, FW, VPN, access, virtualization.

  • Security Testing: Nmap, Nessus, Wireshark, Hping, John the Ripper, Egressor, BSI OSS Security Suite, BackTrack, Metasploit.

Jan 2012 - Dec 2012
Leverkusen, Germany

WAN Site Planner

Bayer

Position Summary
WAN Site Planner at Bayer
Industries
Pharmaceutical
Business Areas
Information Technology
  • WAN migration/outsourcing to Verizon VzB.

  • Conversion of more than 300 sites and 600 WAN lines to a new worldwide MPLS network.

  • Network Mgmt: Eramon.

Jan 2012 - Dec 2012
Bonn, Germany

Project Engineer

Deutsche-Bank / Postbank Bank Headquarters

Position Summary
Project Engineer at Deutsche-Bank / Postbank Bank Headquarters
Industries
Banking and Finance
Business Areas
Audit
Information Technology
  • Expansion and update of the existing SIEM solution (ArcSight).

  • Measures for SOX compliance certification in the area of security logging.

  • Products: ArcSight Logger, ESM, Smartconnector, Oracle Database 11g.

  • Technologies: SIEM, CEF, RBAC, Syslog, databases, Oracle (RAC), LDAP.

Jan 2011 - Dec 2011
Leverkusen, Germany

Network Automation

Bayer

Position Summary
Network Automation at Bayer
Industries
Chemical
Pharmaceutical
Business Areas
Information Technology
  • Development of an EXPECT TCL script for automatic monitoring of OOB management access for 200 sites (~1000 ports).

  • By using the script, 4 MT can be saved per test case, ROI of the solution 2 months.

  • Products: Cisco product range switches & routers, DSL/analog dial-up modems.

  • Technologies: TCL/EXPECT.

Jan 2011 - Dec 2011

Security & Network Architecture

Daimler/Fujitsu

Position Summary
Security & Network Architecture at Daimler/Fujitsu
Industries
Automotive
Business Areas
Information Technology
  • Design for 4 global datacenters.

  • Datacenter infrastructure for 200,000 users (applications: MS Exchange, SharePoint, Lync).

  • Products: Cisco product range switches & routers, Cisco ASA + IPS, Nexus 5000.

  • Network mgmt: CA Spectrum, ManageNow.

Jan 2011 - Dec 2011
Düsseldorf, Germany

Datacenter Relocation, Planning & Network Migration

ERGO

Position Summary
Datacenter Relocation, Planning & Network Migration at ERGO
Industries
Insurance
Business Areas
Information Technology
  • Planning and migration of ERGO datacenter networks into the new data center in Düsseldorf.

  • Products: Cisco product range switches & routers, 6500 VSS, Cisco 3750X cluster.

  • Network mgmt: Command.

  • Technologies: MPLS, VRF, LDP, EIGRP, BGP, EtherChannel, HSRP, Spanning Tree (802.1w), LACP, QoS, VoIP.

Jan 2008 - Dec 2010
Remote

Subproject Lead: "Project Gematik" / Implementation Engineer / Test Engineer / 3rd-Level Support

T-Systems

Position Summary
Subproject Lead: "Project Gematik" / Implementation Engineer / Test Engineer / 3rd-Level Support at T-Systems
Industries
Healthcare
Information Technology
Business Areas
Information Technology
Operations
Project Management
  • Introduction of the health card in Germany: setup and testing of the L2TP/IPsec VPN remote access solution with PKI/smartcard authentication.

  • High-availability configuration for VPN and access network, security configuration of the security zone.

  • Took over subproject lead for "secure access network".

  • Operations & support (3rd level) for shared datacenter infrastructure: carrying out changes, resolving incidents (routing/switching).

  • Delivered VPN/security training.

  • Proof of concept: datacenter relocation for a state bank - reviewed the network design and verified failover safety.

  • Products: Cisco product range switches & routers, Cisco FWSM, Cisco CSS, F5 load balancer.

  • Network mgmt: Cacti, Nagios, MRTG, Peregrine ServiceCenter.

  • Technologies: MPLS, VRF, EIGRP, BGP, EtherChannel, tunnel interfaces, L2TP, HSRP, Spanning Tree, QoS, IPsec-HA, PKI, certificates, FW contexts.

Jan 2008 - Dec 2008
Cologne, Germany
Remote

Security Architect / Implementation Engineer / 3rd-Level Support

AXA Colonia

Position Summary
Security Architect / Implementation Engineer / 3rd-Level Support at AXA Colonia
Industries
Insurance
Business Areas
Information Technology
  • Design and testing of a Network Admission Control solution for 5,000 remote users (Check Point Integrity / Cisco).

  • Design and testing of an Identity Access Management solution for remote users based on smartcard authentication (PKI/certificates) with dynamic access rules.

  • Security process management: creation of security documentation for second-level support and helpdesk.

  • Security compliance management.

  • Products: Cisco ASA 5544, Check Point NGX R65, Check Point Integrity Server, Microsoft PKI/CA, ActivIdentity smartcards, Cisco ACS, Microsoft IAS, Microsoft IIS.

Jan 2007 - Dec 2007
Düsseldorf, Germany

Network Designer / Test Lab Engineer

KDDI

Position Summary
Network Designer / Test Lab Engineer at KDDI
Industries
Telecommunication
Business Areas
Information Technology
  • Network redesign to introduce QoS in an MPLS-based network (Cisco).

  • Expansion of the POP (point of presence) in Düsseldorf.

  • Connection of an additional internet uplink for redundancy and load sharing via BGPv4.

  • Products: Cisco 7600, Catalyst 6500.

  • Network mgmt: HP OpenView.

Jan 2007 - Dec 2007

Design/Implementation Engineer

Santander Bank

Position Summary
Design/Implementation Engineer at Santander Bank
Industries
Banking and Finance
Business Areas
Information Technology
  • High-performance central firewall system based on Checkpoint/Nokia (VPN-1 NGX) and Cisco Catalyst 6500.

  • Development of a migration strategy to maintain 99.999% availability during the switchover.

  • Creation of security rules taking VoIP and CTI applications into account.

  • Maximum data throughput of the security solution: 10 Gbit.

  • Products: Checkpoint/Nokia (IPxxx, VPN-1 NGX), Cisco Catalyst 6500.

Jan 2007 - Dec 2007

Support and Design/Implementation Engineer

Vodafone

Position Summary
Support and Design/Implementation Engineer at Vodafone
Industries
Telecommunication
Business Areas
Information Technology
  • Support and Design/Implementation Engineer for "ONE Network", Vodafone's international MPLS-VPN network.

  • Setup of VPN-IPsec remote access connections.

  • Cisco management automation with the "EXPECT" language.

  • Design for a VoIP toll bypass between international sites by linking the PBXs via MPLS (ROI < 6 months).

  • Products: Cisco ONS, GSR 12000, Cisco 7600, Catalyst 6500.

Jan 2006 - Dec 2006

Implementation and Integration Engineer

Local service provider

Position Summary
Implementation and Integration Engineer at Local service provider
Industries
Telecommunication
Business Areas
Information Technology
  • Installation and integration of a new multiservice data & voice backbone based on MPLS.

  • Use of traffic engineering for load balancing and availability.

  • VPN services via MPLS-VPN and multiprotocol BGP.

  • Products: Cisco Catalyst 6500, Cisco 3800, Cisco 2800/800.

Jan 2006 - Dec 2006

Security Consultant

Mid-sized company in the pharmaceutical industry

Position Summary
Security Consultant at Mid-sized company in the pharmaceutical industry
Industries
Pharmaceutical
Business Areas
Audit
Information Technology
Quality Assurance
  • Formulation of a security policy.
  • Carrying out internal security audits - penetration testing - social engineering.
  • Guidance toward BSI basic protection compliance and preparation of the network for certification according to BSI/ISO 17799 / ISO27001.
Jan 2005 - Dec 2005
Cologne, Germany

Security Integration Engineer

Clinic in Cologne

Position Summary
Security Integration Engineer at Clinic in Cologne
Industries
Healthcare
Business Areas
Information Technology
  • Integration of a UTM (Universal Threat Management) solution for central scanning of network data for viruses, worms and email spam.
Jan 2005 - Dec 2005

Security Concept Specialist

Mobilprovider

Position Summary
Security Concept Specialist at Mobilprovider
Industries
Telecommunication
Business Areas
Information Technology
  • Created a concept to secure billing (user cost calculation) and to increase the accuracy and availability of the billing process.
Jan 2005 - Dec 2005
Düsseldorf, Germany

Security Specialist

Papierfabrik

Position Summary
Security Specialist at Papierfabrik
Industries
Manufacturing
Business Areas
Information Technology
  • Set up a highly available network-based virus scanner and intrusion prevention system for an international company in paper processing.
May 2004 - Aug 2005

Technical Engineer / Sales Engineer

Fortinet

Position Summary
Technical Engineer / Sales Engineer at Fortinet
Industries
Information Technology
Business Areas
Customer Service
Information Technology
Product Development
  • Consulting and technical support for ASIC-accelerated UTM (Universal Threat Management) systems.

  • Product improvements in cooperation with product management and engineering.

  • Products: FortiGate, FortiManager, FortiLog.

Jan 2004 - Dec 2004

Security Consultant

Mobile-Provider

Position Summary
Security Consultant at Mobile-Provider
Industries
Telecommunication
Business Areas
Information Technology
  • Created a concept for secure data exchange over the GRX (GPRS Roaming Exchange Network) of mobile network operators.
  • GTP inspection, intrusion detection, and data encryption.
Jan 2004 - Dec 2004

Security Project Engineer

Mobile-Provider

Position Summary
Security Project Engineer at Mobile-Provider
Industries
Telecommunication
Business Areas
Information Technology
  • Project for a high-performance central firewall to protect the Gi interface between the provider wireless network (UMTS/GPRS) and the internet.
Jan 2004 - Dec 2004
United Kingdom

Security Architect

Mobilfunktbetreiber

Position Summary
Security Architect at Mobilfunktbetreiber
Industries
Telecommunication
Business Areas
Information Technology
  • Created a concept including a POC (Proof of Concept) for a large-scale universal IPsec VPN to connect partner companies' extranets.
May 2003 - Apr 2004

Consulting Engineer (Mobile Solution Team)

Cisco Systems

Position Summary
Consulting Engineer (Mobile Solution Team) at Cisco Systems
Industries
Telecommunication
Business Areas
Customer Service
Product Development
Sales
  • Security consulting in EMEA for leading mobile operators such as Vodafone, O2, Orange, and T-Mobile.
  • Designed new security solutions specifically for mobile operators (GTP Inspection, URL Filtering, Secure CMX).
  • Pre- and post-sales support for account teams.
  • Training of the AM and SE community in the area of security.
  • Troubleshooting and project support for large security projects.
Jan 2003 - Dec 2003

Infrastructure & Security Administrator

International Import/Export Agency

Position Summary
Infrastructure & Security Administrator at International Import/Export Agency
Industries
Transportation
Business Areas
Information Technology
  • New switch infrastructure, securing network segments and internet access through a central firewall.
  • Administration of Windows 2000 servers and desktop PCs.
  • Drafting and integrating a security concept for desktop PCs.
Jan 2003 - Dec 2003
Gelsenkirchen, Germany

MySAP Contentnetworking & Security Project

RAG-Informatik

Position Summary
MySAP Contentnetworking & Security Project at RAG-Informatik
Industries
Information Technology
Business Areas
Information Technology
Quality Assurance
  • MySAP Contentnetworking & Security project based on a highly available Cisco CSS11500 cluster.
  • Testing of the involved components, POC, creation of a highly secure operating concept, and implementation.
Jan 2001 - Dec 2002
Frankfurt, Germany

Security Consultant

Service-Provider

Position Summary
Security Consultant at Service-Provider
Industries
Information Technology
Business Areas
Information Technology
  • Secure management in the central management network for a web server hosting farm.

  • Products: Cisco Catalyst 6500, IOS Security Features.

Aug 2000 - Feb 2002

Internetworking Consultant

Cisco Systems

Position Summary
Internetworking Consultant at Cisco Systems
Industries
Information Technology
Telecommunication
Business Areas
Information Technology
  • Network and security consulting in Europe for leading service providers and mobile operators.

  • Security architect: supporting service providers in building secure security solutions based on Cisco products.

  • Knowledge transfer to the Cisco sales force as a member of the "Virtual Security Team".

  • Technologies: LAN switching, routing, MPLS, xDSL, security management.

Jan 1999 - Dec 2000
Poland

Firewall Cluster Consultant

Bank in Polen

Position Summary
Firewall Cluster Consultant at Bank in Polen
Industries
Banking and Finance
Business Areas
Information Technology
  • Securing authentication servers with a highly available firewall cluster.

  • Products: Check Point, Nokia.

Jan 1999 - Dec 2000
Poland

BGP Routing Consultant

Service Provider in Polen

Position Summary
BGP Routing Consultant at Service Provider in Polen
Industries
Telecommunication
Business Areas
Information Technology
  • POC (Proof of Concept) and setup of BGP4 routing in the service provider backbone between Cisco routers and Nokia firewall routers.
Jan 1999 - May 2000

Senior Network Consultant / Senior Technical Consultant

Nokia Internet Solutions Group

Position Summary
Senior Network Consultant / Senior Technical Consultant at Nokia Internet Solutions Group
Industries
Telecommunication
Business Areas
Information Technology
  • Security consultant for ISP, channel partners, and enterprise customers in Europe.

  • Technical trainer for security and routing training courses (BGP4).

  • Planning highly available firewall clusters to protect ISP server farms.

  • Products: IP440 Firewall (IP330/650).

Jan 1997 - Dec 1999

Network Engineer

ACI (Anixter)

Position Summary
Network Engineer at ACI (Anixter)
Industries
Automotive
Business Areas
Information Technology
  • WAN/LAN traffic analysis, planning, installation, and troubleshooting.

  • New network infrastructure for Renault-Germany in Bonn based on Bay Networks.

  • New network infrastructure for Continental Reifen AG in Frankfurt based on Bay Networks and IBM.

  • Design and integration of a new backbone for Karmann Automobile based on ATM and Token Ring.

  • Products: IBM MSS 8210, 8260, 8274, 8271/72, Bay Networks.

Jan 1996 - Dec 1997

Network Administrator / LAN/WAN-Administrator

Keiper-Recaro

Position Summary
Network Administrator / LAN/WAN-Administrator at Keiper-Recaro
Industries
Automotive
Manufacturing
Business Areas
Information Technology
  • Implementation of a new LAN/WAN infrastructure for more than 3,000 employees worldwide.
  • Support and administration of the WAN network.
Jan 1990 - Dec 1996
Düsseldorf, Germany

Service-Engineer / Substitute Technical Manager

Equant / ITS

Position Summary
Service-Engineer / Substitute Technical Manager at Equant / ITS
Industries
Information Technology
Telecommunication
Business Areas
Information Technology
Operations
  • Setup and commissioning of a datacommunication hosting data center in Düsseldorf.

  • Setup and maintenance of a service provider POP in Düsseldorf for around 200 international company branches.

  • Planning and installation of the IT infrastructure for United Airlines at Düsseldorf Airport.

  • Technologies: Frame-Relay, X.25, X.28, HDLC, SDLC, TCP/IP.

Jan 1989 - Dec 1990

Service Engineer

Fiedler Datentechnik

Position Summary
Service Engineer at Fiedler Datentechnik
Industries
Information Technology
Business Areas
Customer Service
Information Technology
  • Installation and repair of computer equipment from IBM, Compaq, Toshiba, and others.
Jan 1987 - Dec 1988

Computer Consultant

Schmitt-Computersysteme

Position Summary
Computer Consultant at Schmitt-Computersysteme
Industries
Information Technology
Business Areas
Information Technology
  • Consulting in the computer field.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Telecommunication, Manufacturing, Chemical, Healthcare, and Automotive.

Information Technology
Telecommunication
Manufacturing
Chemical
Healthcare
Automotive
Profile match chart

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Operations, Project Management, Customer Service, Audit, and Product Development.

Information Technology
Operations
Project Management
Customer Service
Audit
Product Development
Profile match chart

Summary

20 years of experience in IT, working for top customers with a focus on networking and security.

Proven ability to deliver high-level consulting as a permanent employee for top vendors like CISCO, FORTINET and NOKIA/CHECKPOINT at CCIE level.

Known for the ability to build effective customer relationships and meet customer, reseller and vendor goals.

Expert in networking and security in one person for design, implementation and support

IDC Security Conference Speaker

Skills

Security Compliance

  • Iso 17799
  • Bsi Baseline Protection
  • Basel Ii
  • Sox

Vulnerability Scanning / Penetration Testing

  • Vulnerability Scanning With Freeware, Commercial Tools And Custom-Built Script Tools
  • Penetration Testing According To Bsi Methods
  • Security Testing With: Nmap, Nessus, Wireshark, Hping, John The Ripper, Egressor, Bsi Oss Security Suite, Backtrack, Metasploit
  • Source Code Analysis
  • Development Of Attack Methods

Application Security

  • Analysis, Activation And Review Of The Vendor'S Security And Data Protection Requirements For Effectiveness At The Application And Data Layer (Order: Network Security / Os Security / Application Security)
  • Review Areas: Rbac, Authentication, Encryption, Access Control, Dos Stability

Mobile-Wireless

  • Technologies: Gsm, Gprs, 3g, Umts, Gtp, Smsc, Ran, Billing Charging Mediation, Lawful Interception
  • Products: Cisco Cmx, Itp
  • Openwave: Basic Product Knowledge

Other Areas Of Knowledge

  • Project Management: Ms-Project, Sub-Project Lead In It Projects
  • Operating Systems: Sun Solaris V.8, Windows 2000/2003 Server, Xp
  • Linux Distributions: Debian, Gentoo, Redhat
  • Open Source Security Software: Iptables, Ethereal, Nmap, Snort, Nessus, Openvpn, Metasploit, Clamav, Spamassassin
  • Programming: C, C++, Perl, Visualbasic, Java, Wmi-Scripting
  • Shell-Scripting: Bash/Csh
  • Assembler Intel, Motorola 68k
  • Database: Sql, Mysql, Ms Sql, Dbase, Clipper
  • Www: Webserver: Apache, Iis
  • Software: Excel, Power Point, Visio, Word, Access, Ms-Project, Corel-Draw, Adobe Photoshop, Blender-3d, Mindmanager

Languages

German
Native
English
Intermediate

Education

Telekolleg II

University of Applied Sciences entrance qualification at evening school · University of Applied Sciences entrance qualification · Germany

Municipal elementary school on Helmholzstraße

Germany

Heinrich-Hertz-Kollegschule

Intermediate school leaving certificate · Electrical engineering · Germany

...and 2 more

Certifications & licenses

Checkpoint Certified Security Administrator-CCSA

CHECKPOINT

Checkpoint Certified Security Engineer-CCSE

CHECKPOINT

Cisco Certified Internetworking Professional Security-CCIP-SECURITY

CISCO SYSTEMS

Cisco Certified Security Professional-CCSP

CISCO SYSTEMS

IBM Certified Solution Engineer Level II

IBM

LPI Linux Professional Level I

Linux Professional Institute

Microsoft

Statistics

Experience

Total positions 44
Experience in Information Technology 20.5 y
Avg length 1 y 5 m
Longest experience 6 y 11 m

Global Experience

Countries worked in 3 (Germany, Poland, United Kingdom)
Primary country Germany

Expertise

Recent roles Datacenter Engineer, Network & Security Administrator, F5 migration project as sub-project lead/consultant / Cybersecurity Consultant, Network and Security Administrator (Firewall Rules / VPN Access)
Main industries Information Technology, Telecommunication, Manufacturing
Main business areas Information Technology, Operations, Project Management

Qualifications

Certifications earned 10

Profile

Created
Last Update

Frequently asked questions

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Rudolf is based in Ratingen, Germany and can operate in on-site, hybrid, and remote work models.

Rudolf speaks the following languages: German (Native), English (Intermediate).

Rudolf has at least 39 years of experience. During this time, Rudolf has worked in at least 40 different roles and for 41 different companies. The average length of individual experience is 1 year and 11 months. Note that Rudolf may not have shared all experience and actually has more experience.

Based on recent experience, Rudolf would be well-suited for roles such as: Datacenter Engineer, Network & Security Administrator, F5 migration project as sub-project lead/consultant / Cybersecurity Consultant, Network and Security Administrator (Firewall Rules / VPN Access).

Rudolf's most recent position is Datacenter Engineer, Network & Security Administrator at International insurance group.

In recent years, Rudolf has worked for International insurance group, Healthcare, content and datacenter provider for health insurance companies, Municipal utilities NRW, German Glasfaser, and Bayer/Arlanxeo.

Rudolf is most experienced in industries like Information Technology, Telecommunication, and Manufacturing. Rudolf also has some experience in Chemical, Healthcare, and Automotive.

Rudolf is most experienced in business areas like Information Technology, Operations, and Project Management. Rudolf also has some experience in Customer Service, Audit, and Product Development.

Rudolf has recently worked in industries like Insurance, Chemical, and Manufacturing.

Rudolf has recently worked in business areas like Information Technology, Project Management, and Audit.

Rudolf attended Telekolleg II for University of Applied Sciences entrance qualification.

Rudolf has 10 certificates. Among them, these include: CISSP #115361, Checkpoint Certified Security Administrator-CCSA, and Checkpoint Certified Security Engineer-CCSE.

Rudolf will be available full-time from August 2026.

Rudolf's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

To hire Rudolf, click the Meet button on the profile to request a meeting and discuss your project needs.

Daily Rate Distribution

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<€640 €640-800 €800-960 €960-1120 €1120+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 950 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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Rate comparison chart
Median rate 1000 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.