Florian Krebs - LAN Planner

Recommended expert

Olching, Germany

Experience

Jul 2024 - Jun 2025

1 year

LAN Planner

Global Network AG

Current state analysis of the existing network infrastructure and its documentation, including on-site inspection
Independent planning of new distribution and main distribution rooms in the individual district offices (components used, rack layout, connectivity) taking into account BSI IT Baseline Protection and InfoSic guidelines
Planning of new copper and fiber optic cabling, including patch panels
Coordination with building services engineering (TGA) to comply with relevant requirements in the premises
Development of implementation plans and high-level concepts for the rollout of the new infrastructure
Additional support after the components go live (hypercare phase)
Regular communication with project management and client stakeholders

Oct 2023 - Dec 2023

3 months

Technical Consultant

PDLZ

Support in designing a new data center
Review and revision of documents such as network diagrams and segmentation concepts
Checking documents for compliance with BSI IT Baseline Protection
Consulting on network setup and component placement (firewall systems, core and distribution switches)
Consulting on zone architecture and network security (defense-in-depth and zero trust architecture)
Development of a new VLAN concept including an IPv4 addressing scheme
Development of a new naming convention for network components
Creation of an allocation overview for the network infrastructure
Regular communication with project management and client stakeholders
Management of external service providers

Jan 2023 - Jun 2024

1 year 6 months

Technical Project Manager / Network Specialist

Global Network AG

Technical contact for the operational consolidation (BKB) of federal agencies (connecting agencies to the federal private cloud solution)
Analysis and consulting on existing user connections (e.g., NdB or Gs/Ex) within agencies to avoid bandwidth bottlenecks
Technical contact for the IP address harmonization subproject
Development of technical solutions and target architectures for harmonizing and segmenting agency networks, including high-security environments
Troubleshooting connectivity issues at Layers 2–4
Analysis of individual applications for service consolidation (DKB)
Creation of migration concepts
Further development and optimization of IT processes within the project
Definition of necessary milestones to track project progress
Project planning and task tracking using Jira
Creation and maintenance of documentation in Confluence
Planning, organizing, and leading meetings, workshops, and kick-off meetings
Close collaboration with project managers, infrastructure consultants, and network administrators of the individual agencies
Stakeholder management
Development of technical documents, manuals, survey forms, and recommendations, as well as preparation of interim and final reports
Preparation of results and presentation at the decision-maker level

Jan 2022 - Dec 2022

1 year

Senior Network Security Consultant

top itservices AG

Development of a network segmentation concept in compliance with BSI IT Baseline Protection and ISO 27001 requirements
Evaluation and adjustment of existing structure and protection requirement analyses
Evaluation and adjustment of existing security concepts (access control and encryption)
Risk analysis of network components (access layer) and development of corresponding security measures such as NAC (security controls)
Creation of documentation for the network infrastructure (L2/L3)
Development and implementation of a new SNMPv3 concept
Collaboration with the SOC to improve the existing ISMS based on ISO 27001
Point of contact for the CISO and the SOC team for IT security inquiries
Presentation of the developed concepts at the management level

Jul 2020 - Dec 2021

1 year 6 months

Network and Security Engineer / Project Manager

Solcom

Technical, conceptual, and planning support for building a new data center
Preparation, creation, and assignment of work packages in Jira
Creation of schedules while considering various dependencies and objectives
Management of external service providers and stakeholder management
Ensuring compliance with milestones
Development and implementation of a multi-tier firewall zone concept
Operation and support of the network infrastructure (Layers 2–4) with HP 10500, 5900, 5500, Cisco Catalyst 9300, and Kemp LoadMaster
Operation and maintenance of the firewall infrastructure (Check Point R80.30, Fortigate 3960, 600, 200, FG Manager, FG Analyzer, Juniper)
Planning and execution of changes and new installations (change management)
Handling tickets in case of incidents (incident management)
Troubleshooting and network analysis in case of errors (problem management)
Creation and updating of documentation

Mar 2019 - Feb 2020

1 year

3rd Level Network Engineer

Unisys

Operation and support of the network infrastructure (Layer 2-4) on site at the client with Cisco Catalyst 2960-X, 3650, 3750, 3850, 4500, Nexus 3K, WLC 3504/2504 and AP 1700/1800
Operation and maintenance of the firewall clusters (Cisco ASA 5510)
Planning and carrying out changes and new installations (Change Management)
Handling tickets in case of faults (Incident Management)
Troubleshooting and network analysis in case of errors (Problem Management)
Optimizing the network infrastructure by creating and implementing concepts
Creating and updating documentation
Point of contact for 2nd level support for all technical questions
Training the 2nd level support
Management of external service providers
Release management for network components including risk assessment

Jul 2018 - Dec 2018

6 months

Senior Network Administrator

MSH (Medien System Haus)

Operation and support of the network infrastructure (Layer 2-4) on site at the client with Cisco Catalyst 2960-X, 3750, 6500, Nexus 5K and 2K
Operation and maintenance of the FW/VPN clusters (Cisco ASA 5525-X, 5545-X, Pulse)
Configuring and maintaining various VPN topologies and firewall rule sets
Planning and carrying out changes and new installations (Change Management)
Handling tickets in case of faults (Incident Management)
Troubleshooting and network analysis in case of errors (Problem Management)
Creating and updating documentation

Sep 2017 - Mar 2018

7 months

Network Architect

Altran

Operation and support of the network infrastructure (Layer 2-4) on site at Airbus with Cisco Catalyst 2960, 4500, HP 5400zl, 2910, Sophos SG230, Astaro UTM220 and FortiGate 300
As-is analysis of all research networks
Creating documentation for L2/L3
Planning new research networks in coordination with the business units
Creating high- and low-level designs for new network areas
Technical support during the data center move

Jul 2016 - Feb 2017

8 months

Network and Security Support

Schweickert Netzwerktechnik GmbH

Operation and support of the network infrastructure on site at SAP with Cisco Nexus 2K, 3K, 6K, 7K, 9K and Cisco Catalyst 4500, 6500 as well as HP 5400zl and 4200vl
Planning and carrying out changes and new installations (Change Management)
Optimizing the network infrastructure
Reviewing, creating and modifying access control lists
Handling tickets in case of faults (Incident Management)
Network analysis (Problem Management)
Supporting the field service
Creating and updating documentation
Taking early and late shifts

Oct 2015 - Feb 2016

5 months

Cisco 2nd Level Support

Pan Dacom Networking AG

Operation and support of the network infrastructure on site at Audi with Cisco Nexus 2K, 3K, 7K as well as Cisco Catalyst 4500 and 3750X and HP 5400zl
Planning and carrying out changes and new installations (Change Management)
Installing and testing network equipment
Handling tickets in case of faults (Incident Management)
Network analysis
Supporting the field service
Creating and updating documentation

Oct 2013 - Oct 2014

1 year 1 month

Line Manager

Atlantik Systeme GmbH

Implementation of the lines' sales and profit targets according to the annual plan
Definition and execution of necessary marketing activities
Negotiations with manufacturers and procurement according to the guidelines
Negotiation of target agreements and marketing budgets with the manufacturer to maximize rebate and coop payments

Sep 2011 - Nov 2014

3 years 3 months

Network Technician

Atlantik Systeme GmbH

Pre- and post-sales support for all vendor lines (Cisco, HP, Mellanox, Raritan, Digi, Lantronix)
Technical contact for automotive and energy sector projects regarding mobile network connectivity
Technical point of contact for the sales team
Configuration of routers, switches, firewall systems, KVM solutions
Configuration of VLANs, trunking, DHCP, NAT, STP, EtherChannel, ACLs, wireless LAN solutions, static and dynamic routing

May 2008 - Sep 2010

2 years 5 months

Technical Consultant

Arrow ECS

Phone and email support for L2/L3 network components, IPSec and SSL VPN firewalls, UTM and STM security appliances, and WLAN solutions
Diagnosis, troubleshooting, and optimization of customer networks
Maintenance of the Known Error Database (KEDB)
Development of complex network topologies

Jun 2003 - Sep 2003

4 months

IT systems management assistant

bzm edv-systeme GmbH

Phone support for hardware and software
On-site technical support
Installation and maintenance of computer and network systems (Win98, Win2000, WinXP, Linux)
Customer support
Training of customers and trainees

Skills

Switching / Routing / Wlan / It Security / It Operations / Network Design / Conception / Network Analysis / Firewall Systems / Cloud Infrastructures / Process, Service, Project Management / Isms (Bsi It Baseline Protection, Iso27001) / Risk Analysis / Risk Management / Nis2 / Critical Infrastructures
Cisco / Fortinet / Check Point / Juniper / Hp / Dell / Kemp / Arista / Sophos / Astaro / Lantronix / Netgear / Digi / Infoblox / Bluecat / Macmon / Pulse / Fluke / Splunk / Icinga / Nagios / Mrtg / Wireshark / Nessus / Ms Visio / Fnt Command / Ca Spectrum / Jira / Confluence / Itdirect / Workcenter