freiberufler Senior IT-Architekt auf freelance.de

Senior IT-Architekt

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  • 60549 Frankfurt
  • Weltweit
  • de
  • 31.03.2025

Kurzvorstellung

Schwerpunkte: Cybersecurity und Netzwerkinfrastruktur (Aktiv/Passiv) im Datacenter & Backboneumfeld
- Analysen /Konzepte / Migrationen entsprechend KRITIS, NIS-2, BAIT, VAIT, ISO27001

Qualifikationen

  • Cisco-Netzwerkspezialist43 J.
  • Cyber Security Engineer15 J.
  • Juniper6 J.
  • Projektleitung / Teamleitung (IT)9 J.
  • Projektmanagement (IT)9 J.
  • Prozessoptimierung

Projekt‐ & Berufserfahrung

Senior IT Architekt aPrio1 AG (Festanstellung)
aPrio1 AG, Frankfurt
1/2022 – 2/2025 (3 Jahre, 2 Monate)
Telekommunikation
Tätigkeitszeitraum

1/2022 – 2/2025

Tätigkeitsbeschreibung

Logo von aPrio1 AG
Senior IT Architekt aPrio1 AG
Senior IT Architekt aPrio1 AG
aPrio1 AG · VollzeitaPrio1 AG · Vollzeit
Jan. 2022–Heute · 3 Jahre 2 MonateJan. 2022–Heute · 3 Jahre 2 Monate
Frankfurt/Rhein-Main · HybridFrankfurt/Rhein-Main · Hybrid
Senior IT Architekt Cybersecurity / IT-Infrastruktur:
Beratung im Umfeld Network Infrastruktur & Security:
- Konzeptionen nach aktuellen BSI-Vorgaben (NIS-2, DORA, KRITIS, BAIT, VAIT)
- Ausarbeitungen zu Risikomanagement, Notfall- & Krisenmanagement
- Erstellung Präsentation zu aktuellen rechtlichen & organisatorischen Vorgaben
- Ausarbeitung von Beratungsleistungen im Bereich IT-Steuerung (BSI Indikatoren der Domain IT-Steuerung)
- Erstellung Fragen Katalog GAP-Analyse zur IT-Infrastruktur
Senior IT Architekt Cybersecurity / IT-Infrastruktur: Beratung im Umfeld Network Infrastruktur & Security: - Konzeptionen nach aktuellen BSI-Vorgaben (NIS-2, DORA, KRITIS, BAIT, VAIT) - Ausarbeitungen zu Risikomanagement, Notfall- & Krisenmanagement - Erstellung Präsentation zu aktuellen rechtlichen & organisatorischen Vorgaben - Ausarbeitung von Beratungsleistungen im Bereich IT-Steuerung (BSI Indikatoren der Domain IT-Steuerung) - Erstellung Fragen Katalog GAP-Analyse zur IT-Infrastruktur
Kenntnisse: ISO 27001 · IT-Strategie · Cybersecurity CSG ISACA zertifiziert · Analysen entsprechen DORA, NIS-2, BAIT, VAIT, KRITIS, BSI Grundschutz

Eingesetzte Qualifikationen

Cyber Security Engineer, IT Ingenieur-Infrastruktur, Check Point (allg.), Juniper, Cisco-Netzwerkspezialist, Projektleitung / Teamleitung (IT), Projektmanagement (IT), Netzwerkarchitektur

Fachgebietsleiter Netzwerk (Festanstellung)
antas AG, Frankfurt
9/2018 – 1/2022 (3 Jahre, 5 Monate)
Telekommunikation
Tätigkeitszeitraum

9/2018 – 1/2022

Tätigkeitsbeschreibung

Fachgebietsleiter Netzwerk
weltweit

Als Fachgebietsleiter Netzwerk bin ich für die strategische Ausrichtung der antas AG und Aufgabenstellungen im Design / Konzeption / 3rd Level Support für Kunden dieses Beratungsunternehmens weltweit verantwortlich. Neben Projekten in klassischen Netzwerkstrukturen werden Thematiken im Bereich Software Defined Networks (SDN) bzw. Software Definied WAN und Virtualisierungslösungen / Automation zunehmend bedeutungsvoll.

Kenntnisse: IT-Management · ISO 27001 · IT-Strategie

Projektleiter / IT-Architekt
Projectlead and IT-Architect for complex networks solution, Focus on datacenter services including software defined networks (CISCO ACI), migration scenarios and Core topology
Projectlead and IT-Architect for complex networks solution, Focus on datacenter services including software defined networks (CISCO ACI), migration scenarios and Core topology

Kenntnisse: IT-Strategie

Eingesetzte Qualifikationen

Bereichsleiter Produktion, Cisco-Netzwerkspezialist, Cyber Security Engineer, IT Ingenieur-Infrastruktur, Projektleitung / Teamleitung (IT), Projektmanagement (IT)

IT-Archtect; (Senior Network Desgn Engineer)
Allianz, Frankfurt
4/2015 – 3/2018 (3 Jahre)
Versicherungen
Tätigkeitszeitraum

4/2015 – 3/2018

Tätigkeitsbeschreibung

As one of the Senior IP Architect my central responsibility was divided in design conception and Engineering support by integrating customer services (Allianz OE) into worldwide 5 big datacenter

Tasks within Design / Redesign of Network (LAN / MAN / WAN / Datacenter)
- Conception of Core Upgrade and Migration procedure
- Evaluation, and Conception for replacement of Core-Devices, Upgrade of DC-interconnect to
100Gbps, Implementation of WAN-aggregation Layer (WAN protocol: BGP / MPLS)
- Participation for QoS (Quality of Service) conception (ongoing)
- Interconnect and Upgrade connected BorderLeaf with consideration of future implementation of
Cisco ACI (Cisco Application Centric Infrastructure on Nexus 9xxx platform)
- Evaluation for migration to SDN (Software defined Networking) based Services
- Conception and implementation of customer owned (Allianz OE) Virtual Desktop environment (VDI
topology)
- Conception and technical assistance during implementation of high performance Backup and
database services (Mainframe, iSeries Serverfarm/interconnect, Hadoop, Exadata, Centera etc)
- Involved for conception and integration of central administration and securing services (GPAM
etc.)
- Conception and migration plan for Nexus 6xxx replacement (EOS)
- technical assistance during implementation of high performance Backup and database services
(Mainframe, Hadoop, Exadata, Centera etc)

Tasks within OE and Service Migration:
- As Senior Design Engineer Responsible for support in preparation and during the migration for
following Allianz entinity / services:
- Ibero Latern ServerFarm & Virtual Client topology, AZ Germany (partly), AZ France (partly),
Mainframe, Exadata, iSeries ServerFarm & virtual Client topology, Centera, Hadoop, SMART, GPAM,
AVC (Allianz Virtual Client), etc.

Eingesetzte Qualifikationen

Cyber Security Engineer, IT Ingenieur-Infrastruktur, IT-Sicherheitsberater, Juniper, Cisco-Netzwerkspezialist, Projektleitung / Teamleitung (IT), Projektmanagement (IT)

IT Architekt (Senior Design Engineer / 3rd level network )
Alpiq, Olten
4/2009 – 4/2015 (6 Jahre, 1 Monat)
Energie Provider
Tätigkeitszeitraum

4/2009 – 4/2015

Tätigkeitsbeschreibung

I am acting as the Senior Design Engineer / 3rd Level Support for the corporate ALPIQ Network:

- Nexus Datacentre: Conception, advertisements, construction and 3rd Level support of a
Datacentre Block (IP ranges and services spread over 3 DC Locations) based on Nexus 7010,
div. N5K and N2K devices
- Demand of design: Loopfree, fault tolerance, non-disruptive during maintenance services;
20Gbps backbone, integration of CISCO UCS, spreading IP-Ranges between locations
(Clustering between different locations)
- Integration of FabricPath feature sets.
- Integration of Loadbalanced Services via CISCO ACE (DC & DMZ)
- Definition of SLA (technical) for ALPIQ
- Technical Consultant for network specific questions within the company merger (ATEL / EOS to
ALPIQ)
- Education of internal ALPIQ stuff / organization of training course
- MPLS Backbone: Conception, advertisements, construction (technical responsibility Engineer on
Customer side) and maintenance (3rd level) of a multi VRF 10Gbps based MPLS Backbone
(Hardware: Catalyst 7606; Routing Protocol BGP / OSPF) .
- Restructuring of security based network topology:
- Implementation of a central point of control for VRF transition and for interfacing firewall
connectivity
- Collaboration for build up a new Perimeter-, 3rd Party- und Admin-FW Instance
- Integration of an SNA (Structured Network Access) / NAC (Network Access Control) solution.
- Integration of an IPAM Solution
- Collaboration for the implementation of a DWDM Backbone for ALPIQ (Design, advertisements)
(ADVA product)
- Migration and Integration of associated company and distend location to the corporate network
- Training of internal stuff (Operation- / Service-team) and 3rd- & 2nd Level Support
- Build up of an LAB-environment as an image of the production area
- Conception und creation of an pilot for SmartMeetering
- Design: REP based topology
I am acting as the Senior Design Engineer / 3rd Level Support for the corporate ALPIQ Network: - Nexus Datacentre: Conception, advertisements, construction and 3rd Level support of a Datacentre Block (IP ranges and services spread over 3 DC Locations) based on Nexus 7010, div. N5K and N2K devices - Demand of design: Loopfree, fault tolerance, non-disruptive during maintenance services; 20Gbps backbone, integration of CISCO UCS, spreading IP-Ranges between locations (Clustering between different locations) - Integration of FabricPath feature sets. - Integration of Loadbalanced Services via CISCO ACE (DC & DMZ) - Definition of SLA (technical) for ALPIQ - Technical Consultant for network specific questions within the company merger (ATEL / EOS to ALPIQ) - Education of internal ALPIQ stuff / organization of training course - MPLS Backbone: Conception, advertisements, construction (technical responsibility Engineer on Customer side) and maintenance (3rd level) of a multi VRF 10Gbps based MPLS Backbone (Hardware: Catalyst 7606; Routing Protocol BGP / OSPF) . - Restructuring of security based network topology: - Implementation of a central point of control for VRF transition and for interfacing firewall connectivity - Collaboration for build up a new Perimeter-, 3rd Party- und Admin-FW Instance - Integration of an SNA (Structured Network Access) / NAC (Network Access Control) solution. - Integration of an IPAM Solution - Collaboration for the implementation of a DWDM Backbone for ALPIQ (Design, advertisements) (ADVA product) - Migration and Integration of associated company and distend location to the corporate network - Training of internal stuff (Operation- / Service-team) and 3rd- & 2nd Level Support - Build up of an LAB-environment as an image of the production area - Conception und creation of an pilot for SmartMeetering - Design: REP based topology

Eingesetzte Qualifikationen

Cyber Security Engineer, IT Ingenieur-Infrastruktur, IT-Berater, IT-Sicherheitsberater, Firewalls, Cisco-Netzwerkspezialist, Cisco Router, Cisco Switch

Senior Consultant network
British Telecom Professional Services, Frankfurt
6/2007 – 3/2009 (1 Jahr, 10 Monate)
Telekommunikation
Tätigkeitszeitraum

6/2007 – 3/2009

Tätigkeitsbeschreibung

- Within the IT Outsourcing of Alliance (German insurance company) my responsibility was the
planning, conception and rollout of IP-Redesign and LAN-Refresh of all data network (LAN/MAN
on all locations) of these company all over Germany.
- Lead engineering tasks for: Conception, project planning, project management, and responsibility
for the Roll-Out
- Target: Establishing of SOX-Compliance in order with the redesign of network topology.
- Design- and redesign tasks within the project (High-Level & Detailed)
- Definition of technical basic conditions
- Control of commercial conditions and responsible for order volume (> 40 Mio €)
- Technical project management for migration scenario for location with more than 2000
employee, for datacentre and backbone connectivity
- 3rd-Level-Support
- Within the IT Outsourcing of Alliance (German insurance company) my responsibility was the planning, conception and rollout of IP-Redesign and LAN-Refresh of all data network (LAN/MAN on all locations) of these company all over Germany. - Lead engineering tasks for: Conception, project planning, project management, and responsibility for the Roll-Out - Target: Establishing of SOX-Compliance in order with the redesign of network topology. - Design- and redesign tasks within the project (High-Level & Detailed) - Definition of technical basic conditions - Control of commercial conditions and responsible for order volume (> 40 Mio €) - Technical project management for migration scenario for location with more than 2000 employee, for datacentre and backbone connectivity - 3rd-Level-Support

Eingesetzte Qualifikationen

IT Ingenieur-Infrastruktur, IT-Sicherheitsberater, Projektleiter Telekommunikation, Cisco-Netzwerkspezialist

Netzwerkspezialist (Consultant)
Allianz, Frankfurt
1/2007 – 6/2007 (6 Monate)
Versicherungen
Tätigkeitszeitraum

1/2007 – 6/2007

Tätigkeitsbeschreibung

Development of a study for minimizing local server farms using WAN-Acceleration to distant datacentre locations

- Development of a LAB-Test and a Pilot project between Greece and Germany
(tested products: Juniper, Riverbed and CISCO WAAS)
- Design- and redesign tasks within datacentre, Core- and branches
- 2nd & 3rd-Level-Support

Eingesetzte Qualifikationen

Cisco-Netzwerkspezialist, IT-Infrastrukturspezialist, IT-Sicherheitsberater, Juniper, WAN

Senior Network Design Engineer
Dresdner Kleinwort Wasserstein, Frankfurt
1/2004 – 12/2006 (3 Jahre)
Banken
Tätigkeitszeitraum

1/2004 – 12/2006

Tätigkeitsbeschreibung

Management consulting regarding migration / outsourcing strategy for network-segregation out of the corporate network of the Allianz Group

- Conception of the approach (technical), definition of content (technical), support during
the migration phase
- Definition of SLA to Service Provider, Build-up, Training of internal stuff
- Build up of an Business Recovery Centre (network)
- Connect to Core location within a WAN-Acceleration solution (Juniper / Peribit)
- Reduction of cost: ca. 300000.- € / anno
- Third-Level-Support (Network)

Realization of an datacentre network
- Hardware: Cisco Catalyst 6509 (7600) und 6506 (Sup. 720); Catalyst 6509 (Sup 720)
with WANFLEX-Modul; Catalyst 6513
- Responsible for connect the DC to existing CORE using DWDM
- Conception, advertisements, construction, placing into service, project management
(technical parts) acceptance tests for LAN, WAN, VPN, FW (Checkpoint, Bluecoat)
and DWDM (Nortel Optera)

Realization of network infrastructure (active /passive) for an location with about 7000 data connects
- Responsibility: Conception, advertisements, construction, placing into service,
project management (technical parts) acceptance tests
- Hardware: Cisco Catalyst 6513, Catalyst 6509 , Catalyst 4506

Eingesetzte Qualifikationen

IT Ingenieur-Infrastruktur, IT-Berater, IT-Sicherheitsberater, Cisco-Netzwerkspezialist

Senior Networking Engineer
Dresdner Bank / DREGIS, Frankfurt
9/1999 – 12/2003 (4 Jahre, 4 Monate)
Banken
Tätigkeitszeitraum

9/1999 – 12/2003

Tätigkeitsbeschreibung

Realization of network infrastructure (active/passive) for an location with about 9000 data connects
- Responsibility: Conception, advertisements, construction, placing into service,
project management (technical parts) acceptance tests
- Hardware: Cisco Catalyst 6513, Catalyst 6509 , Catalyst 4506
- Realisation of an datacentre Network
- Hardware: Cisco Catalyst 6509 (7600) ¨
- Responsible for connect the DC to existing CORE.
- Conception, advertisements, construction, placing into service, project management
(technical parts) acceptance tests
- Administration and 3rd Level Support
- Responsible for projects also in Europe destinations

Eingesetzte Qualifikationen

Cisco-Netzwerkspezialist, IT Ingenieur-Infrastruktur

Network Engineer (Festanstellung)
T-Mobile, Bonn
12/1995 – 5/1999 (3 Jahre, 6 Monate)
Telekommunikation
Tätigkeitszeitraum

12/1995 – 5/1999

Tätigkeitsbeschreibung

Design and Redesign within the data communication network of T-Mobile
- Creation of conception for maintenance and support services
- Definition of SLA ´s (Service Level Agreements)
- Technical contact to service partners (network)
- Responsibility for acceptance test for external services
- Second-Level-Support (Cisco Router Series 75xx, 25xx; Cisco Switches Series
Catalyst 5xxx, Catalyst 6509)
- Project Management

Eingesetzte Qualifikationen

IT-Infrastrukturspezialist, Cisco-Netzwerkspezialist

Network & Telecommunication Engineer (Festanstellung)
Deutsche Telekom, Darmstadt
1/1981 – 11/1995 (14 Jahre, 11 Monate)
Telekommunikation
Tätigkeitszeitraum

1/1981 – 11/1995

Tätigkeitsbeschreibung

Design and Redesign of network topology

Reduction of cost for mobile communication locations of "Mobilfunknetzes C" of
450000.- DM / Location (80 Locations in sum)
- Development and programming of a time multiplex tool to optimize time multiplex allocation
and synchronization of "Funktelefonnetz C"
- Implementation of time multiplex and synchronization planning within "Funktelefonnetz C"

Eingesetzte Qualifikationen

IT-Infrastrukturspezialist, Cisco-Netzwerkspezialist

Über mich

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Persönliche Daten

Sprache
  • Deutsch (Muttersprache)
Reisebereitschaft
Weltweit
Arbeitserlaubnis
  • Europäische Union
Home-Office
bevorzugt
Profilaufrufe
28
Alter
65
Berufserfahrung
43 Jahre und 7 Monate (seit 09/1981)
Projektleitung
15 Jahre

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