Richard Rensen Email & Phone Number

Rotterdam, South Holland, Netherlands

Strong network as foundation for your organisationOur aim is clear: realise and maintain a complete network infrastructure so that our customers do not have to worry about it.Leeps specialises in the design, supply, implementation and management of retail, office and data centre networks. We provide our customers with a total package for a good, safe and fast network. Short lines of communication and professional services are the basis for this.In short, Leeps builds and maintains a rock-solid network, so that you can focus on your business.

Amsterdam Area, Netherlands

Role: Solutions Architect Network InfrastructureProject: Datacenter RefreshAfter numerous major outages on the European network infrastructure which had a severe impact on the business continuity. PVH launched a program to revamp the data center infrastructure. The scope of the project was to establish a new network infrastructure based on the latest technologies on networking and security and migrate network services, compute, and SAP systems to a new datacenter facility. My primary focus was to analyze the existing technology environment, define implementation and migration strategy and design the best technology solutions in response to business problems or requests. In addition to my primary role, I have also been involved in a number of projects to refresh and improve edge and remote access connectivityAchievements:- Defined network datacentre blueprint for the European Datacenters.- Deployed VXLAN fabric with Cisco DCNM integration.- Developed detailed migration and implementation plans for; o Legacy proxy to Checkpoint with SSL inspection and URL filtering o Routing migration from legacy to new infrastructure o Network services e.q. Netscaler, F5, Infoblox o IPsec VPN migration from Cisco to Checkpoint o Migration from classic Cisco ASA to Cisco FMC- AWS Cloud integration.- Deployed a geo-redundant active / active remote access VPN for +2500 associates. - Developed Corporate Meraki design for the European offices with VPN exclusion.Keywords; Checkpoint R80, DCNM, Infoblox, Anyconnect, IPsec, Meraki, AWS, Umbrella

Netherlands

TDNC is a freelance computer networking contracting company that has accomplished numerous long and short-term projects for clients across diverse industries. The following are a few of TDNC's most notable achievements:- Executed a global Meraki design and implementation for a Dutch-based cosmetic company, covering 1000 branches globally and hubs located in multiple Azure regions.- Created a high-level store and data center design based on Meraki for a leading retail brand in the Benelux region, serving over 1100 stores.- Supported in a complex data center migration project for a prominent global retail fashion company.- Successfully migrated a client's Azure network to Azure Virtual WAN.

Hilversum, Provincie Noord-Holland, Netherlands

After years of outsourcing and neglect, Nike’s network infrastructure found itself encumbered by a high degree of technical debt, a vendor-owned service support model and vendor constrained security protection. Resulting in: network instabilities, security vulnerabilities, suboptimal inter-regional routing, limited cloud capability and recurring concerns around performance, availability, latency & redundancy. Nike launched a program to build a Next Generation Network, built to mature the network and sustain the pace of the company’s growth ambitions. Role: Senior Network Consulting Engineer Key role in designing and deploying Nike’s Next Generation network. This included the development and deployment of network solutions, from concept to operational support, with a global scope. Achievements:• Documented reference architecture for; o Nike campus locations o Nike Partner Stores o Privately-owned Nike Global WAN backbone. o Various services (Multicast for IPTV, Wired Guest)• Design & deployment; o Cloud redundancy for AWS. o E-LAN network for European Logistics Campus• Research of different SD-WAN solutions• Complete full-service migration of Nike’s data communications to the new Global WAN backbone.• Secure external facing web traffic via cloud-based security filtering for EMEA & APAC region.• Implementation of Cisco ACI in data centres• DMVPN based design for retail network infrastructureKeywords: Nexus9K, ASR1/9K, ASA, FTD, ACI, SDWAN, AWS, Azure, MPBGP, DMVPN, IPsec, SRX, Cloud Security, F5, Ansible, Extrahop, Prime

The Hague Area, Netherlands

In addition to my long-term assignments, I also worked on number of short-term projects.• CTAC: Consultant for Cisco ACI Multi-pod design (2017)• Koopman Int. : KA LAN Design and implementation (2015)• Dekra: Datacenter LAN Design and implementation (2015)• Voogd & Voogd: Wifi Design and implementation (2014)• Unilever: LAN refresh (2012-2013)• Royal Bank of Scotland: LAN Design and implementation (2012

The Hague Area, Netherlands

Hired by Cisco to support one of their customers, a major service provider in the Netherlands, to consolidate five legacy networks to one new data centre infrastructure distributed over multiple regions within the Netherlands. This network was built on ASR9000, Nexus 7000 and 2000. Technologies that were used; MP-BGP, RPL, FabricPath, VPC, MCLAG, DCI, 100G, CGNAT. Responsibilities within this project;- Translation of the functional requirements into several technical designs- Created Low Level Design and Configuration Templates.- Created Method of Procedure(MoP) and doing the implementation.

Amsterdam Area, Netherlands

Hired by Tele2 Netherlands to design and build a new data centre network infrastructure for their internal IT applications and services. This new data centre network was distributed across two locations and built on Cisco hardware. The hardware that was used: C6880-X-LE, C4900M, and C2960X.Responsibilities within this project;- Collection of (non)functional requirements;- Execution of functional and capacity test cases against Tele2 standards;- Writing Low Level Designs, troubleshoot guides, and configuration guides;- Preparation and execution of migrations to the new infrastructure;- Providing training to various NO&E departments

Contractor via Legian within KPN Mobile: - Responsible for the IP connectivity for the KPN LTE(4G) project. (This included the EPC and RAN.)- Creating (IP) Low Level Design for Mobile services- Building and Maintaining Innovation Test Center Network(Cisco switches/firewalls) and with network services like DSview(oob) , Infoblox (dns), Nixu (IPAM), Cisco Prime, Wireless Lan, IPsec.- Joint Innovation with Huawei for RCSe platform (designing and configuration of ip connectivity)

Working as a project member for a project(based on PRINCE2 methods) called NWA for KPN Mobile.NWA stands for NetWork Administration.The goal of this project is to retrieve an accuracy of 95% of the logical and physical network administrationMain tasks:- Testing Nixu NameSurfer- Migrate the current Excel IP plan to Nixu NameSurfer.- Provide training - Write work instructions- Reviewing TEO(technical equipment overview)- Preform UAT and PAT in NIM Cramer 4

Worked at the KPN ZM as an second / third line Network Engineer. Did, trouble and problem ticket handling, configuration, troubleshooting and fixing connection problems on the IP-VPN network, Layer 2 network based on Nortel and Alcatel, Eurorings network, KPN Office (W)LAN and datacenter networks. Technologies i've worked with are; (MP)BGP, OSPF, EIGRP, MPLS, Vlan, STP, HSRP, WCS, WLC, xDsl, Dark Fiber.