Lee is available for hire
Hire LeeLee Javens
Verified Expert in Engineering
Network Engineer and Developer
London, United Kingdom
Toptal member since January 17, 2025
Bio
Lee is an accomplished IT engineer capable of solving complex hardware and software issues on consumer and corporate computing systems. He has committed the last seven years to the specialized role of networking. Lee's ability to implement creative and forward-thinking solutions and techniques has been the key to his success. He takes great care in ensuring clients are given effective solutions with a proactive approach to maintaining a smooth operation.
Portfolio
Slough Borough Council
CCNA, Active Directory (AD), Windows, Windows Server
London Borough of Tower Hamlets
CCNA, Cisco Meraki, Zscaler, Windows Server, Active Directory (AD)
Tottenham Hotspur
CCNA, Active Directory (AD), Windows, SolarWinds, Patch Management...
Experience
- Windows Server - 17 years
- Active Directory (AD) - 15 years
- VMware - 10 years
- SharePoint - 10 years
- CCNA - 7 years
- CISO - 7 years
- Cisco CLI - 7 years
- Checkpoints - 2 years
Availability
Full-time
Preferred Environment
CCNA, CISO, Checkpoints, Windows, Active Directory (AD), Windows Server
The most amazing...
...project I've delivered involved consultations and solutions for the Check Point firewall projects at Slough Borough Council to expand department operations.
Work Experience
Senior Network Engineer
2022 - 2024
Slough Borough Council
- Headed consultations on a number of networking projects following the CAB procedure with initial technical discussions, PM advisory, 3rd-party support collaboration, and troubleshooting/implementation of solutions.
- Focused on the heart of the council by working the Check Point firewall to implement new NAT rule infrastructure via community VPN tunnels for payroll and council operations, as well as bespoke software for site-to-site data communication.
- Consulted with third parties, including Capita, Civica, Team Netsol, QTC, Agile Applications, and Northgate Public Services (NPS).
Technologies: CCNA, Active Directory (AD), Windows, Windows Server
Network Engineer
2022 - 2022
London Borough of Tower Hamlets
- Performed network infrastructure monitoring, maintenance, and repair for over 70 sites within the council district using HP/Cisco and Juniper firewalls and switches.
- Implemented Zscaler cloud security VPN access to switch and firewall, enabling syntax checks, backups, and updates.
- Monitored systems using Simple Network Management Protocol (SNMP) with SolarWinds, responding reactively to any issues. Conducted site visits for WAN/WLAN network interruptions and architectural expansion.
- Prioritized infrastructure business-as-usual (BAU) activities across sites from Hoxton to Wapping.
Technologies: CCNA, Cisco Meraki, Zscaler, Windows Server, Active Directory (AD)
Project Network Engineer
2021 - 2022
Tottenham Hotspur
- Surveyed power distribution board meters (+400) throughout the stadium to integrate into the existing HP Aruba 2530 network for an upgrade of economic analysis of electrical usage.
- Implemented DB Meter for device audit input upload into key IP/patching systems. Set up new VLAN/config segregation aligned with enhanced security protocols. Implemented additional security measures for CCTV, EPOS, retail, and surplus port access.
- Conducted pre-match network evaluation for data and Hawkeye resources for Tottenham managers, staff, press, and photographers.
- Revamped security port risks and mitigation across over 150 communications rooms within the entire stadium.
Technologies: CCNA, Active Directory (AD), Windows, SolarWinds, Patch Management, Windows Server
Network Engineer
2021 - 2021
Harrods
- Upgraded and implemented a new fabric network with the task of decommissioning the legacy network through precise and carefully migrated device management whilst live systems continued to conduct revenue.
- Installed new Cisco Catalyst 9300L switches with uplinks to distribution and core with mapping to the SDA server.
- Upgraded fiber uplinks from OM1 to OM3. Copied, modified, and uploaded configurations to new switches.
- Migrated endpoints, including APs, access points, IEVO fingerprint systems, hosts, ePOS printers, and tills meticulously through carefully planned 3rd-party control. Decommissioned legacy Catalyst 2960-X switches.
Technologies: CCNA, Active Directory (AD), Windows, Cisco Meraki, Windows Server
Infrastructure Engineer
2020 - 2021
Timeline Television
- Maintained and supported infrastructure for key media systems via the corporate enterprise environment for over 500 employees.
- Digitized, streamed, and archived live media throughout London and beyond using critical networking architecture and applications.
- Maintained Cisco/HP Aruba 2530 network architecture and supported IBM Aspera high-bandwidth FTP.
- Administered the Windows Server corporate domain, ensuring seamless user access.
Technologies: CCNA, Active Directory (AD), Windows, Windows Server, Aspera
Network Project Engineer
2017 - 2020
GTR
- Supervised and conducted network infrastructure project work within Southern Railway, Great Northern Trains, and Thameslink to upgrade, maintain, and implement new HP Aruba LAN, WAN, and telephony technologies.
- Coordinated with Vodafone, Openreach, and Level 3 to upgrade individual stations, enhancing performance and functionality within the overall MPLS network.
- Upgraded WAN connectivity for over 60 stations/depots with IPsec-VPN, including circuit installations, NTE setups, and ISP router configurations.
- Enhanced LAN infrastructure at over 90 stations by integrating new HP Aruba 2530 switches and implementing VLAN setups.
Technologies: CCNA, Windows Server, Active Directory (AD), Windows, Ubiquiti
Senior IT Engineer
2016 - 2016
Grand Visual
- Oversaw the deployment of an interactive application for marketing Marvel's Doctor Strange motion picture and its utilization across various international territories.
- Prepared and deployed over 25 devices for international distribution with the Doctor Strange application to be ready for use in multiple territories, including Malaysia, Hong Kong, the Philippines, Thailand, and the USA.
- Debugged new app versions and tested updates for the deployed application. Coordinated with technical teams in each territory for setup and ongoing support.
Technologies: Windows Server, Active Directory (AD), Windows
IT Consultant Engineer
2015 - 2016
Totality Services
- Coordinated the development and implementation of projects directly for new and existing clients. Surveyed and cataloged infrastructure. Documented and planned the overhaul of new and improved systems.
- Analyzed, consolidated, expanded, and removed infrastructure to reduce costs and surpass client expectations. Deployed domain controllers and integrated clients.
- Optimized networking and communications for increased internal and external traffic interfacing. Virtualized operating systems for economic efficiency, meeting client requirements effectively.
- Migrated full email systems and managed DNS record transfers to Exchange Online and Office 365 for multiple clients. Integrated infrastructure ticket services for monitoring and interfacing support. Decommissioned redundant hardware as needed.
- Consulted on infrastructure and desktop services continuously, ensuring ticket support met service level agreements (SLAs) using advanced monitoring and interfacing systems.
- Provided reactive support through remote desktop services and maintained strong communication with clients to effectively address their requests and issues.
Technologies: Windows Server, Active Directory (AD), Office 365, SharePoint
Senior IT Engineer
2015 - 2016
Network London
- Coordinated with overseas clients on data center projects involving the deployment of advanced WAN fiber interfacing and complete migration of email platforms to optimize communications.
- Planned and deployed Cisco and Ciena fiber hardware in the UK data centers for a client based in New York. Managed full email migrations and DNS record transfers to Exchange Online and Office 365 for multiple clients.
- Provided service ticket support meeting SLAs through advanced monitoring and interfacing systems.
Technologies: Windows Server, Active Directory (AD), Office 365, Windows, SharePoint
Event Engineer
2015 - 2015
N200
- Worked on exhibitions for clients like Olympia and Excel.
- Deployed scanning technology for over 10,000 visitors.
- Administered onsite support for critical data analysis and recording systems for continuous visitor registration.
- Supervised users interacting with scanning systems daily.
Technologies: Windows Server, Active Directory (AD), Windows, Office 365, Ubiquiti
Event Technical Manager
2014 - 2015
iBid
- Collaborated with House of Fraser, Grand Prix Ball GP Management, Ascot Racecourse, Highclere Castle Heroes World War 1 Commemoration, The Savoy, the Victoria and Albert Museum, and the Royal Opera House.
- Provided the server and network infrastructure for the digital silent auction application distributed on various digital pads.
- Supported data collection at each event and ensured the timely update of digital bids within the auction lots, displaying the highest bidders throughout the event.
- Coordinated with venue event staff, ensuring compliance with health and safety regulations and achieving expected revenue targets for specific events.
Technologies: Windows Server, Active Directory (AD), Windows, Office 365, Ubiquiti
Field Network Engineer
2013 - 2014
Group 7 Events
- Collaborated with Microsoft, Samsung, Delta Airlines, and Gadget Show (Earls Court).
- Toured with Microsoft for six months, traveling to twenty cities to rig and de-rig exhibition sets and set up LAN, WAN, and WLAN network infrastructure.
- Deployed SQL Server and client devices to capture live data through a custom application.
- Collaborated with hosting clients to set up IT equipment on site while considering the health and safety aspects of the technology involved.
- Transported technology equipment and conducted inventory checks before and after events.
Technologies: Windows Server, Active Directory (AD), Windows, Office 365, Ubiquiti
Experience
Check Point
Worked at Slough Borough Council and consulted on a number of projects that expanded department operations.
One project was to utilize a new SaaS application hosted on Capita's ABC servers. These needed to be governed by the data that was situated within six servers within Slough's data center, where their main infrastructure is hosted. In between, the Check Point firewall maintained resilient security and required policies to be configured to allow static NAT routing that controlled the subnet's traffic flow to enable secure data.
This, combined with specific egress and ingress policies, successfully created an expanded site-to-site encrypted connection.
One project was to utilize a new SaaS application hosted on Capita's ABC servers. These needed to be governed by the data that was situated within six servers within Slough's data center, where their main infrastructure is hosted. In between, the Check Point firewall maintained resilient security and required policies to be configured to allow static NAT routing that controlled the subnet's traffic flow to enable secure data.
This, combined with specific egress and ingress policies, successfully created an expanded site-to-site encrypted connection.
Education
2001 - 2005
Bachelor of Engineering Degree in Aerospace Engineering and Astronautics
Kingston University - London, United Kingdom
Certifications
SEPTEMBER 2016 - SEPTEMBER 2019
CCNA
Cisco
Skills
Tools
Cisco Meraki, SolarWinds, Aspera, VMware
Languages
HTML
Platforms
Windows, Zscaler, Windows Server, SharePoint
Other
CCNA, System Administration, CISO, Checkpoints, Active Directory (AD), Engineering, Patch Management, Ubiquiti, Office 365, VoIP, Cisco CLI
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