William Roullier Email & Phone Number

United Kingdom

As a key member of the FourNet Connect team, formerly known as 01T, I bring extensive expertise in Juniper Network products and system solutions, driving both project and BAU tasks with precision and efficiency.Working in an ISP/MSP environment, my role involves a multitude of objectives.- WAN to LAN deployments using vendors including Cisco, Juniper, Dell, and FortiGate. From delivering simple DIA paths to advanced connectivity solutions using MPLS to design L3VPN, EVPN, and VPLS services to customers, ensuring robust network performance and secure design.- Providing PNI & NNI expansion across the core.- Firewall & security design, using Juniper SRX, Cisco ASA & FortiGate firewalls for core and customer environments.- Experience in network architecture, POC, LLD & HLD, network design and planning of core sites and customer solutions. - Developing lab environment testing for NetOps and DevOps using a mixture of physical hardware and virtual emulation through EVE-NG, enabling seamless network management and deployment.Additionally, I specialise in developing scalable system services such as:- SNMP monitoring for customer and core service analytics and reports, using platforms such as Grafana and Zabbix. Developing visualisations and aggregated data for the team to use.- Core/CPE backup using Oxidized- Netbox, for Core Network and CPE IPAM- Radius / LDAP authentication.- Utilising containerisation and orchestration techniques with Docker, coupled with AWS Cloud Computing to build out our VPC for customer and business micro-applications.

United Kingdom

As a key member of the FourNet Connect team, formerly known as 01T, I bring extensive expertise in Juniper Network products and system solutions, driving both project and BAU tasks with precision and efficiency.Working in an ISP/MSP environment, this project involves the integration of 01T and FourNet with scalable and efficient solutions for the networks and its customers.

Working in the ISP environment servicing the core infrastructure and core systems. I was primarily working on the Box Broadband network, however I had a few projects which were part of the integration project for Community Fibre and Box Broadband.The project consisted of Integration with monitoring systems through Telemetry and SNMP using Zabbix, InfluxDB and Grafana.Manage, monitor, and configure secure redundant physical and logical connections between Community Fibre and Box Broadband.Familiar with Juniper ACX, MX, QFX, vRR, Cisco ASR, NCS, Palo Alto (Panorama), A10 CGN.Netbox for IPAM and device management.

Guildford, England, United Kingdom

Primarily a Juniper core network engineer working in an ISP environment, I was tasked with maintaining and configuring MX, QFX devices while also working alongside ACX, EX and SRX devices. I also research and develop critical and non-critical system solutions. Upgraded Box Broadband's core services including our servers and hosted software, building resiliency to the core Juniper devices to aid in business growth and a redundant secure architecture.Working with applications such as Grafana, InfluxDB and Zabbix to provide SNMP/Telemetry monitoring to our core, aggregate and access layer devices.LDAP/Radius AAA for customer and service authentication using FreeRadius.NetBox for IPAM and device management.Lead the expansion of PNI/NNI, WAN and IXP connections across the core.Created and maintained Low Level and High Level Documentation and Design as well as create business process to align with a more professional environment.Extensive knowledge in IGP/EGP protocols including but not limited to BGP, OSPF, IS-IS, MPLS, L2VPN, L3VPN, VPLS, VPWS, EVPN.Working with VMware’s ESXI hypervisor using Ubuntu, FreeBSD and Redhat Linux servers, all within project and large-scale changes.I have extensive knowledge in WAN to LAN subscriber connections to customers in a service provider environment using Juniper’s BNG solution with redundant mechanisms using PWHT and M:N redundancy.Working with Nokia OLT’s and using a virtualised software management system, Altiplano to configure, troubleshoot and roll out OLT’s on a GPON/XGSPON Network.Configured a lab environment to emulate current network topologies used in our live environment and to use when testing and applying configurations before rolling them out. I created EVE-NG labs with vMX, vQFX, vSRX Juniper devices along with Linux virtualised servers, Mikrotik routers, PaloAlto firewall and A10 to practice CGN.

Horsham, England, United Kingdom

Managed users on Microsoft Azure/365 and AD accounts.Implemented and managed ESXI servers used in live and test environments.Maintaining 8x8 hosted telephony platform.PRTG SNMPRouting and Switching for Enterprise.

Reigate, Surrey, United Kingdom

Managing, monitoring and configuring network links and network devices such as Cisco routers and switches, Cisco ASA, Palo Alto, Actelis Modems and Zhone Modems, Zhone DSLAMs and Eaton UPS's.Experience with networking technologies and protocols like IPv4 and IPv6, BGP, DHCP, DNS, FTP, HTTP, HTTPS, ARP, OSPF.Implementing ACL's on the router and firewall to filter incoming and outgoing traffic throughout the network. Examples would be setting up VPN clients, proxy port filtering, Level two filtering and bandwidth policing on ports.SSL and firewall configurations using software such as Netsweeper to set up virtual ports for filtering web-based traffic by creating polices within different network ranges. Palo Alto and Cisco ASA's, monitoring and troubleshooting traffic flow.DNS record implementation such as A, CNAME, TXT, MX.Active Directory and Microsoft Exchange knowledge troubleshooting such as setting up user accounts and migration of accounts. Setting and applying group settings, Mail Filtering, Administrative tasks and experience with the Microsoft Suite.Telephony setups using Microsoft Lync, such as creating new phone numbers for users, response groups and troubleshooting issues client or server side.Knowledge of wireless, ADSL, FTTC and FTTP implementations of broadband.Mentoring skills and leadership from training multiple people about technical and business processes.

Horsham, West Sussex, United Kingdom

Troubleshooting end user computers, printers and applications. I was also working with Microsoft Office products and services such as Active Directory, Office 365 and Exchange, Sharepoint and the Office suite.Along side this I was configuring VOIP and SIP users on Mitel.

Working on site and in the office as an engineer, I performed tasks like installation of configured servers on site, as well as troubleshooting issues assisting with tasks.