John O. Email & Phone Number

United Kingdom

Salford, England, United Kingdom

Advanced technical supportInfrastructure management Security and ComplianceProject SupportDocumentation and TrainingCustomer serviceBusiness operations support

Salford, England, United Kingdom

Managed Active Directory, DHCP, DNS, and file servers, ensuring seamless and secure operations.Provided technical support for LANs, WANs, routers, switches, firewalls, and wireless access points.Installed, configured, and maintained network hardware/software for optimal performance and security.Configured and maintained VMware and Hyper-V environments to meet organisational needs.Performed routine system maintenance tasks, including backups, updates, and performance tuning.Spearheaded network optimisation projects, enhancing system efficiency by 30%. Streamlined data recovery processes, reducing recovery time by 25%.Introduced cost-effective network management solutions, saving the company budget. Analysed network traffic patterns to pre-emptively address scalability needs.Enhanced server uptime by 20% through proactive maintenance and upgrades.Developed custom scripts to automate routine network checks, increasing operational efficiency.

London, United Kingdom

• Provided technical support and assistance to clients in managing and troubleshooting their cloud infrastructure, including AWS, Azure, and Google Cloud Platform.• Responded to and resolved customer inquiries and issues related to cloud services, ensuring timely resolution and customer satisfaction.• Collaborated with cross-functional teams to identify and address system inefficiencies and improve overall performance.• Created and maintained documentation for troubleshooting procedures, best practices, and knowledge base articles.• Participated in on-call rotations to provide 24/7 support and ensure uninterrupted service availability.• Managed and maintained on-premises servers and network infrastructure, ensuring high availability and reliability.• Implemented security measures to protect systems from unauthorised access and cyber threats.• Conducted regular system updates, patches, and backups to ensure data integrity and system stability.• Provided technical support to end-users, troubleshooting hardware and software issues, and resolving technical problems.

Federal Capital Territory, Nigeria

• Oversee the design, implementation, and management of a multi-site network infrastructure spanning three locations.• Lead a team of twenty-five network engineers and technicians in maintaining network availability and performance.• Develop and maintain network documentation, including diagrams, configurations, and standard operating procedures.• Collaborate with cross-functional teams to assess business requirements and recommend network solutions that align with organisational objectives.• Implement network security policies and procedures to protect against internal and external threats.• Conduct regular audits and assessments to ensure compliance with industry regulations and standards.• Manage vendor relationships and negotiate contracts for network hardware, software, and services.• Develop and implement network monitoring and alerting systems to proactively identify and resolve issues.• Plan and execute network upgrades, migrations, and expansions to support business growth and evolving technology requirements.• Provide technical leadership and mentorship to junior team members, fostering a culture of continuous learning and development.• Collaborated with vendors and service providers to procure and implement new hardware and software solutions as needed.

Abuja, Federal Capital Territory, Nigeria

• Expanding e-mail capabilities through interconnecting Microsoft Exchange, implementing Internet Mail Service (IMS) and deploying Outlook Web Access.• Designed and implemented network solutions to support the organisation's evolving business requirements.• Configured and optimised routing protocols, including OSPF, BGP, and EIGRP, to improve network performance and reliability.• Deployed and managed firewalls, VPNs, and intrusion detection/prevention systems to enhance network security.• Conducted network troubleshooting and root cause analysis to resolve performance issues and minimize downtime.• Implemented network monitoring tools to proactively identify and address potential issues before they impact operations.• Collaborated with system administrators to integrate network infrastructure with server and storage systems.• Create and support 7500 total Exchange users in 10 locations nationwide and worldwide, as well as corporate office users.• Responsible for creating, managing, and supporting thousands of Exchange objects such as distribution lists and other managed Exchange objects.• Provide extensive support and maintenance of Microsoft Office Outlook Web Access and Microsoft Office Outlook E-mail, Calendaring, and scheduling.• Maintain optimal Exchange server health using Quest products such as Spotlight on Messaging for Exchange.• Group Policy Management Implementation.

No 8, Abinusewa Street, Beside Bcos, Basorun, Ibadan, Oyo State

• Provided technical oversight of a multi-site enterprise-level WAN, including planning, implementation/expansion, maintenance, and troubleshooting.• Prepared and maintained documentation of network configurations and cabling layouts.• Provided hardware and operating system support for the corporate and field computer systems environment, UNIX, Linux, Windows, and storage.• Analysed and monitored server security and implemented patches and fixes to address potential security holes.• Design, implement, and maintain the company's LAN/WAN infrastructure, ensuring high availability and security.• Designed and implemented CCTV systems for commercial and residential clients, ensuring compliance with industry standards and client requirements.• Conducted site surveys to assess security needs, identify potential risks, and develop customized solutions.• Installed and configured analogue and IP cameras, DVRs, NVRs, and VMS software according to project specifications.• Integrated CCTV systems with access control systems, alarm systems, and other security devices for comprehensive security coverage.• Troubleshooted and resolved technical issues related to CCTV systems, including camera malfunctions, network connectivity problems, and software glitches.• Provided training and technical support to clients and end-users on CCTV system operation, maintenance, and troubleshooting.• Configure and manage Cisco routers, switches, and firewalls to support network operations.• Monitor network performance and troubleshoot issues to minimize downtime and optimize performance.• Implement security measures such as firewalls, VPNs, and intrusion detection/prevention systems to safeguard network integrity.• Administer Active Directory, including user management, group policy implementation, and access control.• Develop and maintain documentation for network configurations, procedures, and best practices.

Ogbomosho, Oyo State, Nigeria

• Assisted with troubleshooting computer hardware and software.• Assisted with cloning and Software installations and configurations.• Ensured requests were properly opened, resolved promptly, documented, and closed in the ticketing system.• Requested desk phone service activations and mobile phone configurations.• Diagnosed and resolved hardware and software issues for clients, including troubleshooting network connectivity problems, software installations, and system upgrades.• Provided technical support and assistance to users, both remotely and on-site, ensuring timely resolution of IT-related issues.• Assisted in the development and testing of new features for a web-based project management tool using Java and Spring framework.• Participated in code reviews and collaborated with senior engineers to optimize code performance and maintain code quality.• Contributed to the documentation of software design, requirements, and testing procedures.

Master'S Degree, Computer Networks And Systems Security

Bachelor Of Technology - Btech, Computer Engineering