Nortel Experts in Germany

• Optimization of the transmission media of the data links in the Ruhr area
• Configuration/expansion of switches and routers for an autonomous system AS
• Improve the network protocols used Layer 2/3 (OSI model), RSTP, broadcast, etc.
• Laying cables, crimping, antennas, routers, switches
• Maintenance, expansion, selection and prioritization of troubleshooting measures for network monitoring (PRTG, The Dude)
• Organization and new connection of another BGP peering, data center, NGN fiber optic
• VPN IPSec site connections for 6 sites with PFSense, Fritzbox
• Configuration of WLAN devices (Mikrotik, UBNT

Label: TCP/IP, VLAN, BGP, OSPF, MPLS, VPLS, routing protocols, WLAN, EoIP, PPPoE, routing, SNMP, DHCP, DNS, NAT, native IP, VLAN, Ethernet, VoIP., switches and routers from: Nortel, Cisco, MikroTik, UBNT., network management systems: The Dude, PRTG, UISP

• Leading the subproject Test & Acceptance & Quality Assurance
• Project/program management according to Prince2
• Create and update subproject plan
• Resource management
• Creating and carrying out tests, creating tests in Azure DevOps, MS Dynamics etc.
• Process modeling
• Documenting project progress with PowerPoint and SÖREN (in-house development)
• Acceptance of the respective tests by the end customer
• Monitoring and reporting for the subproject
• Budget: N/A
• Team: 4 people

• Cisco SDA LAN network
• Transition and transformation

• The client is undergoing a comprehensive transformation. All SAP ECC landscapes worldwide are being migrated to SAP S/4HANA, with the goal of introducing a global standard template.

• The program also includes the migration and modernization initiative "RISE with SAP", which may involve migrating selected country installations to the SAP Private Cloud.

• On the stakeholder side, the program's reporting line extends up to the company's board and the implementation partner's board.

• Fiserv Germany's ERP landscape currently includes several non-standard SAP tools and applications that extend the ECC environment's functionality and often integrate with downstream systems. As part of the move to SAP S/4HANA, it is essential to assess the core functionality, integration points, and future viability of these applications to determine their alignment with the target architecture.

• The focus of the role is to provide expert advice and assessment to define the scope, strategy, and roadmap for migrating Fiserv Germany's SAP ECC system to SAP S/4HANA.

• SAP's recommended best practices are followed, and a structured approach is used to ensure a smooth transition with minimal disruption while maximizing business value.

• This assessment forms the basis for a successful SAP S/4HANA transformation, ensuring alignment with industry best practices, regulatory compliance, and future scalability.

• Migration strategy definition – evaluating available transition approaches based on business objectives, technical feasibility, and SAP best practices.

• Technical readiness assessment – conducting a system analysis to assess compatibility, custom code impact, data volume management, integration points, and infrastructure readiness for SAP S/4HANA.

• Business process impact analysis – reviewing the latest business process documentation to define the scope and effort needed to implement required functions in SAP S/4HANA and identify process optimization opportunities.

• Roadmap for non-SAP systems and applications – evaluating third-party and legacy applications for SAP S/4HANA integration and recommending consolidation, migration, or replacement strategies.

• Deployment & implementation planning – defining a phased rollout approach, including project timelines, risk mitigation strategies, and key milestones aligned with business priorities.

• The transformation is carried out in phases: the discovery phase leads to the explore phase, which then leads to the design phase and finally to the implementation phase.

• Program management

• Change management

• Requirements management

• Transition management

• Stakeholder management

• Risk management

• Comprehensive coordination

• Presentations and workshops regarding different VOIP products and technologies
• Design of VOIP and network solutions from core to premium solutions and necessary non-standard solutions
• Processing of tenders
• Development of VOIP and network technical implementation of customer requirements
• Implement and configure different UC products on cloud

• At ING-DIBA AG, transform all local infrastructure applications into a private cloud environment as part of consolidation. This active architecture environment has high application density and represents the core of the banking business. Based on a DevOps architecture, a uniform and standardized environment will be created in the target design, which is highly scalable and meets the requirements of regulatory authorities and the bank's internal security standards.

• Developed the target concept with involved departments.

• Defined VPN/DNS naming conventions and network segmentation.

• Designed the required load balancer system.

• Created a transfer solution for non-routable IP addresses.

• Identified application dependencies in the initial design.

• Coordinated application owners, data protection, information security, and identity managers.

• Developed a validation POC to test and optimize the cloud migration.

• Defined development, test, quality, and production environments in the cloud design, considering an agent-based initial architecture.

• Used existing CMDB systems and adapted the database structure in the target design.

• Established an Office 365 environment for international collaboration for the migration project (classic Office environment including Power BI, SharePoint, Teams)

• Operating VMware, Veeam and further developing the system
• Implementing BSI guidelines during design/build
• Controlling and analyzing the VMware environment with PowerShell scripts
• Working according to ITIL processes
• Versioning scripts with TortoiseSVN

• On-site implementation and upgrade of the life cycle infrastructure for a global partner of a Hays customer.
• On-site implementation for international locations in APAC & AMER.
• Executed on-site life cycle infrastructure upgrades for sites IN-NDA, IN-MOX, US-CAX, US-MOT, CN-YAN, and IN-MOR according to customer requirements. This included project management, administration, network design, optimization, as well as planning and deploying redundant OM4 and OS2 fiber and redundant power systems.
• Designed, upgraded, and migrated data centers for the above sites, including international on-site travel to the USA and India.
• Led and oversaw the network team, providing remote and on-site support for cabling work.
• Created network documentation, including L2 and L3 Visio drawings, IP address planning, network patch plans, power plans, bayface layouts, access point layouts, ISP carrier layouts, data center planning, downtime planning and scheduling, hardware checklists, network device configuration, implementation, test plans, and proposal evaluations.
• Extensive experience with Cisco hardware, including switches (9200, 9300, 9400, 4500, 3850, and 2960 series), WLC (9800, 5505, 3504, and 2800 series APs), ASA (55xx series), and NG Firepower (1010, 1120).
• Maintained documentation, including NetBox, PRTG monitoring, RADIUS, DNS, DHCP, and KX handover sessions, troubleshooting & trainings.
• Life Cycle Technical Guide & Control

• Set of concurrent projects (BSS/OSS related)