$ whoami
I am a Principal Site Reliability/Network Engineer and system engineer. My expertise focusses on network design and implementation such as datacenters, Internet Exchanges
(BGP), and datacenter interconnects (layer-2/3 or MPLS) and Devops/Automation/Monitoring. During the past years I have designed and implemented several major datacenter networks. I currently operate AS200249 and AS212703.
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"If you need a safe, strong and very reliable ship to travel through stormy waters - Wieger is your man"
~ Lisa Lang
~ Lisa Lang
I am an VyOS Certified Network Engineer and Zabbix Certified Specialist (ZCS).
| 2022 - present | Productsup | |||
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| Principal Site Reliability Engineer | ||||
| - Design and setup new Network infrastructure hosting 2k servers doing 200Gbit/s peaks - Automate migration to new infrastructure - Maintain contact with vendors/suppliers - Automation of server/service deployment - Write and deploy custom Netbox plugins - Network Security |
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| Techniques: Vyos, BGP, IP Transit, Peering, IX, Ansible, Netbox, Zabbix, Python, Go, Grafana, Haproxy, Nginx... |
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| 2019 - 2022 | Telindus Nederland | |||
| 2022 - 2022 | Coördinator SMC Intrupt Driven | |||
| - Responsible for the daily operations within the team - Handling P1 escalations - Resolving complex disruptions - Responsible for contact with management and other departments |
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| Techniques: IPv4, IPv6, Ubuntu, IPSec, DNS, Cisco ASA, Cisco Firepower, Fortinet, Palo Alto, Cisco UCS, Cisco DNA, PKI, VmWare |
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| 2021 - 2022 | Coördinator SMC DevOps | |||
| - Responsible for daily operations in the team - Responsible for vision in monitoring & automation - Design and maintenance monitoring & automation platform (8000+ hosts) - Responsible for contact with management and other departments |
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| Techniques: Debian, Ubuntu, Zabbix, Vmware, Netapp HCI, Vmware, PKI, Python |
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| 2020 - 2021 | Developer Automation & Orchestration focusteam | |||
| Within the team (consisting of 2 employees) we have devised and built an automation framework for integrating systems (ServiceNow, Zabbix, Ansible, etc.) with customer equipment (various brands) for automated task handling and incident resolution. |
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| 2019 - 2021 | Service Lead Engineer - Managed Services (Freelance) | |||
| - Monitoring platform based on Zabbix and Zenoss (4000+ hosts) - Automation based on Ansible/Ansible Tower/Python - (Cloud) infrastructure based on Windows/Citrix/VmWare - Guiding/training team members |
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| 2019 - 2019 | Service Lead Engineer (Freelance) | |||
| - Investigate and resolve complex network or firewall incidents on a wide variety of network infrastructures (for example Cisco ACI, DNA, Juniper). - Guiding or implementing network changes - Seeking correlation between various incidents taking place at the same infrastructure |
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| 2018 - 2018 | Carante Groep | |||
| Infrastructure / Security Consultant (Freelance) | ||||
| - Hired to perform a migration of the e-mail infrastructure to DKIM/DMARC/SPF using Proofpoint - Responsible for network (email) security and authentication techniques |
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| 2017 - 2018 | ZorgDomein | |||
| Senior Network Engineer (Freelance) | ||||
| - Setup of high availability network infrastructure with own RIPE allocation and ASN - Performed a migration of the ZorgDomein infrastructure to new network infrastructure - Responsible for network security, firewall services and VPN IPSEC tunnels (300+) - Responsible for firewall/network management - Setup of new datacenter location including Hyper-V cluster - Migration of on-premise Exchange to Office365 - Setup of new storage platform based on Ceph/Openstack - Responsible of network security |
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| Techniques: BGP, Transit, Vyos, Juniper, Dell, Hyper-V, OpenStack, Zabbix |
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| 2014 - 2016 | DICTU (Freelance) | |||
| Infrastructure expert/netwerk | ||||
| - Consolidation of the network infrastructure; - After the aggregation of several ministries we made an inventory of all the network services and wrote an advice/made a design on the new combined network. - Design a new twin-datacentre; In consultation with the architects and other stakeholders we designed the new datacentre to work as a twin datacentre next to an already operational datacentre. |
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| 2014 - 2014 | SCC Services (Freelance) | |||
| Infrastructure Expert | ||||
| - Responsible for high-level design data centers - Responsible for low-level design data centers - Responsible for the Core network including IP transit negotiations, peering-relations, backbone capacity, complex customer/internal questions, expansion opportunities - Responsible for analyzing current usage/flexibility and advise further growth - Responsible for RIPE allocation connectivity - Responsible for connectivity (BGP/OSPF/RIP, Vyatta/Cisco, Switches) Implementation of new monitoring based on Netflow, SNMP using Nagios, Cacti and several other open source tools. |
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| 2014 - 2014 | HP Enterprise (Freelance) | |||
| Senior Network Engineer | ||||
| - Responsible for handing and screening all security-related issues of DEMB network worldwide - Responsible for all firewall management/RfC management on DEMB firewall´s (Cisco/Checkpoint) - Responsible for new infrastructure setup hosting all DEMB websites (Senseo, Pickwick, etc). - Responsible for network security, firewall services and VPN - Responsible for all Linux/Unix based servers - Responsible for monitoring of Cisco routers/firewall´s using SNMP and Netflow - Analyzing network traffic for possible threats |
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| 2008 - 2017 | WIPA Nederland B.V. (Owner) | |||
| Managing Director | ||||
| - Expanding the company revenue from € 300.000 in 2014 to € 1 mln. in 2016. - Consulting clients about network and architecture - Responsible for partners/resellers - Responsible of network, application and network security - Delivery of 24x7 Citrix Online Desktop environment - Responsible for Storage (Ceph, IScsi, HP, Fiber-channel) - Responsible for network at 4 Datacenter Locations, Fiber connections, BGP setup, Internet Exchanges, own RIPE ip spaces and ASN - Setup of high availability webhosting/database clusters |
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| 2008 - 2021 | Information Trends B.V. (Owner) | |||
| Managing Director | ||||
| - Analyzing the needs of clients and writing the project documentation - Responsible for all technical documentation - Development for several large clients as well as a lot of SMB clients, based on ASP/.NET/PHP/Python/Ansible - Worked for large clients; TMG Distributie B.V., DistriQ Transport, Mondi International, Rabo Bank, Unicef Netherlands |
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"A versatile and brilliant IT specialist with a strong practical approach in getting things done. I highly recommend him."
~ Shannon Streifel
~ Shannon Streifel