Lamin Koroma
Houston
Summary
Enthusiastic network administrator proudly offering several years' experience in system upgrades, hardware monitoring and performance improvements. An astute employee with knowledge in system repairs and the installation of network components. Skilled in task prioritization and troubleshooting.
Overview
19
19
years of professional experience
1
1
Certification
Work History
Hardware Onboarding Administrator
IronEdge Group
Houston
09.2025 - Current
- Prepare laptops, desktops, phones, monitors, and peripherals for new hires
- Image devices (Windows/macOS) using tools like Intune, SCCM, JAMF, or MDT
- Install required software, security tools, VPNs, and updates
- Configure user accounts, device naming, and encryption (BitLocker/FileVault)
- Coordinate with HR and IT teams to meet start dates
- Ensure devices are ready before Day 1
- Walk new employees through basic setup, logins, MFA, and hardware usage
- Troubleshoot initial access or hardware issues quickly
- Assisted in the implementation of new administrative procedures and policies.
- Collaborated with cross-functional teams to support project initiatives effectively.
- Managed project timelines to ensure on-time delivery of engineering solutions.
- Facilitated regular project meetings to communicate updates and gather feedback.
- Maintained project schedule by monitoring project progress, coordinating activities and resolving problems.
- Interacted with clients to interpret needs and requirements.
- Collect equipment from departing employees
- Wipe and reimage returned devices securely
- Update asset records and prep hardware for reuse
- Coordinate shipping and recovery for remote employees
- Managed multiple projects simultaneously while meeting deadlines and budget constraints.
- Advised customers on use of products or services.
- Ensure devices meet company security standards
- Apply patches, updates, and endpoint protection
- Follow data protection and device disposal policies
- Support audits by maintaining clean documentation
Risk Analyst
Ironedge Group
Houston
01.2025 - 09.2025
- Monitored changes in regulatory environment and assessed its impact on risk profile.
- Advised senior management on appropriate actions based on results from analyses.
- Implemented procedures for monitoring and controlling operational risks.
- Controlled and risks through proper use of cost-containment tools.
- Conducted compliance audits for data backups, ensuring integrity, and adherence to regulations.
- Responsible for deploying and tuning anti-virus and EDR tools such as SentinelOne, Crowdstrike, Sophos, ThreatLocker, and Huntress to various clients.
- Assisted in conducting risk assessments for various projects within the organization.
- Monitored and reviewed risk assessment, methodologies, and results with internal and external clients. Provided recommendation for hardening network to help increase security posture score.
- Responsible for managing and securing over 9000 endpoints.
- Produced risk assessments to identify threats to system security and apply safeguard mitigation.
- Resolved approximately 300 tickets each month with an average resolution time of 30%.
- Performed regular penetration testing, ensuring 99.9% network uptime using Galactic Scan.
- Contributed to incident response efforts.
- Assisted in the configuration and maintenance of firewalls and EDR tools.
- Documented security procedures and findings.
- Monitoring network traffic for suspicious activity, looking for signs of potential security breaches or unauthorized access.
- Collaborated with various departments to ensure a strong security posture for internal and external clients.
- Conducted vulnerability scans using 11:11 Systems managed SIEM service to generate reports and implement patches to affected systems.
- Monitored dark web reports and alerted clients of potential data compromise using Kaseya Dark Web ID
- Implemented security measures such as firewalls, encryption technologies and access control lists to protect data from unauthorized access.
- Installed security software to protect networks.
- Provided technical support on security related issues and assisted users in resolving them.
- Coordinated with external vendors or agencies as necessary during investigations or responses to incidents.
- Responded quickly to any reported incidents by initiating containment procedures.
- Monitored systems for suspicious activity, investigated security events, and responded appropriately.
NOC Administrator I
Ironedge Group
Houston
06.2021 - 12.2024
- Monitoring the performance and capacity of computer systems.
- Troubleshooting and resolving network connectivity issues for both wired and wireless devices.
- Performing regular checks on network hardware and software.
- Configure and manage network devices, including routers, switches, firewalls, and wireless access points.
- Network monitoring and initiative-taking maintenance. Implemented robust network monitoring systems to ensure early detection of issues and prompt resolution.
- Responding to network alerts and hardware malfunctions.
- Conducting network assessments and audits to ensure compliance with industry standards and regulations.
- Configuring and managing virtualized network environments, such as VMware, Azure, and Hyper-V.
- Implemented comprehensive security measures to safeguard client networks and protect against cyber threats.
- Maintained comprehensive documentation, including network diagrams, configurations, and client-specific procedures.
- Managing system backups and network security protocols.
- Prioritized critical incidents and followed through until resolution, meeting, or exceeding defined SLAs.
- Providing on-call support and responding to network emergencies outside of regular business hours.
- Antivirus scanning and remediation.
- Implementing Quality of Service policies to prioritize network traffic and ensure optimal performance for critical applications.
- Documenting network configuration, procedures, and troubleshooting steps.
- Participating in incident response and forensic investigation to identify root case of security breacher or network outages.
- Diagnosed network issues using tools such as packet sniffers and protocol analyzers.
- Provided training sessions for end-users on how to use various software applications or hardware devices.
- Monitored system performance to ensure availability of all services and systems to authorized users.
- Monitored system upgrades, patches and new configurations.
- Handled network configurations after hours and on weekends to alleviate downtime and maintain smooth operations.
Support Technician
Ironedge Group
Houston
10.2019 - 06.2021
- Analyzing and investigating security incidents to determine their nature, scope, and impact.
- Providing technical assistance and support to end-users via phone, email, chat, or in-person.
- Responding to user requests and providing network training.
- Diagnosing and troubleshooting hardware, software, and network issues.
- Collaborating with other IT and security teams to ensure timely resolution of security issues.
- Logging and documenting support tickets, including the nature of the issue and the steps taken to resolve it.
- Conducting remote troubleshooting and support using remote desktop tools.
- Assisting with the setup and configuration of peripherals such as printers, scanners, and mobile devices.
- Collaborating with vendors and external services providers to resolve technical issues.
- Managing user accounts, permissions, and access controls within Active Directory.
- Tracked all open tickets in a ticketing system database with complete resolution details.
- Provided technical support to customers via phone, email and remote access applications.
- Tested new software releases prior to deployment by end-users.
- Configured user accounts, passwords, file permissions, and email accounts as needed for client use.
- Resolved network connectivity problems for customers utilizing various networking protocols.
- Resolved escalated customer complaints in a timely manner.
- Diagnosed system errors and troubleshot technical issues for clients.
Director of Operations
G3 Global Services
Houston
02.2017 - 09.2019
- Assigned work to employees based on project requirements and individual team member strengths Improve the business processes for each department through analysis and collaboration.
- Devised long-terms business planning at the managerial and executive level.
- Responsible for invoicing orders daily.
- Oversaw all billing questions.
- Collaborated with department management to develop financial plans.
- Checked for accuracy on all key areas: fees, shipping address, shipping type, need/travel dates, service codes, traveler prole, and payment.
- Analyzed the performance of support functions for the visa and passport department and made recommendations for improvement.
- Formulated and streamlined policies and procedures.
- Kept Operations/Regional manager informed of deficient performance.
- Identified general areas of weakness for future training.
- Assisted agents with mail-outs and closing of orders.
- Provided performance feedback on agents for reviews and training.
- Reviewed customer complaints, provided, and tracked resolutions.
- Managed complex customer service-related issues.
Helpdesk Coordinator
JPMorgan Chase/HP Services
Houston
11.2015 - 01.2017
- Dispatch and coordinate a balanced scheduling of Service Delivery techs.
- Dispatch engineers, monitor status and close calls with Customers online call handling system.
- Set up new desktop systems and configured laptops for incoming employees, loading required software and server permissions.
- Provided local and remote Tier 1 IT support for hardware and software to company personnel.
- Configured new employee workstations, including all hardware, software, and peripheral devices.
- Configured systems such as Windows OS, Linux OS, Mac OS X according to company standards.
- Created user accounts, reset passwords, and managed access privileges.
- Resolved customer inquiries in a timely manner while providing excellent customer service.
- Assisted with the design of user manuals for various software applications.
- Supported customers with online billing, access, and account issues.
- Assisted customers by troubleshooting and resolving technical problems.
Operations Manager
CIBTvisas
Houston
10.2009 - 10.2015
- Strengthened operational efficiencies by developing organizational ling systems for invoices, customer orders and contract records.
- Assessed upcoming projects to forecast projected resource requirements.
- Aided senior leadership during executive decision-making process by generating daily reports to recommend corrective actions and improvements.
- Quality control of all visa and passport documents before returning to clients.
- Responsible for invoicing files daily.
- Managed all billing questions for the Houston region.
- Checked for accuracy on all key areas: fees, shipping address, and shipping type, need/travel dates, service codes, traveler prole, and payment.
- Identified general areas of weakness for future training Provide performance feedback on agents for reviews and training.
- Reviewed customer complaints, provided, and tracked resolution.
- Oversaw complex customer service-related issues.
- Established work priorities to meet contractual obligations for schedule and installations.
- Directed day-to-day operations by spearheading implementation of short-term and long-term strategies to achieve business plan and portability goals.
Workforce Analyst
Inovalon Holdings Inc.
Bowie
06.2007 - 10.2009
- Determined appropriate schedules and made initiative-taking adjustments to meet coverage and service objectives Collaborated with senior and department leaders to develop and implement workforce plans.
- Implemented and sustained reporting capabilities related to the call center including development, maintenance, and enhancement of SQL scripts.
- Access databases and pass-through queries and leveraging Excel and other data analysis tools for dashboard reporting.
- Tracked operational metrics, developed, and monitored reports, identified opportunities, provided direct feedback to leadership.
- Coordinate distribution and delivery of routine reporting deliverable.
- Ensured accuracy of reports by monitoring, identifying enhancement opportunities, and communicating results to management.
- Supported the operations of the office and staff regarding such aspects as communications (phone, facsimile, written, e-mail, and otherwise), travel arrangements, document management, and other such support to aid in the facilitation and leveraging of executives and managers time by providing technical and administrative support.
- Designed survey instruments aimed at collecting feedback from employees about their experience within the company.
- Recommended modifications or additions to existing systems and software used by HR teams in order to maximize their effectiveness.
- Analyzed qualitative and quantitative data to identify opportunities for streamlining processes and improving efficiency within the workplace.
- Gathered data from various sources, including surveys, interviews, focus groups, and online databases, to evaluate employee engagement levels.
- Maintained accurate records of all workforce analytics activities for easy reference when needed.
- Developed models to predict changes in human capital demand due to external factors such as technological advancements or economic shifts.
- Presented results from analysis conducted during a variety of studies such as salary benchmarking exercises or career development initiatives.
Education
BS - Business - Finance
Towson University
Towson, MD06.2007
Skills
- Administered and maintained LAN/WAN/WLAN infrastructure, ensuring high availability and optimal network performance
- Configured and supported Cisco routers and switches (IOS, VLANs, routing protocols including OSPF and BGP)
- Managed firewalls and VPNs using Palo Alto, FortiGate, and Windows built-in VPN
- Monitored network health and performance using Auvik, PRTG, and Solarwinds, proactively resolving issues
- Implemented DNS, DHCP, and Active Directory services on Windows Server environments
- Supported wireless networks using Cisco Meraki
- Troubleshot network issues using tools such as Wireshark, ping, traceroute, ipconfig, and netstat
- Assisted with cloud networking configurations in Azure VNets and AWS VPCs
- Applied network security best practices including ACLs, segmentation, and IDS/IPS integration
- Documented network configurations, changes, and procedures for operational continuity
- Monitored and analyzed security events using SIEM platforms including Splunk and Microsoft Sentinel
- Investigated and responded to security incidents following incident response and escalation procedures
- Performed vulnerability scans using SentinelOne and Huntress
- Analyzed endpoint threats using EDR/XDR tools such as CrowdStrike Falcon, SentinelOne, and Microsoft Defender for Endpoint
- Conducted network traffic analysis using Wireshark
- Leveraged MITRE ATT&CK framework to classify attacker techniques and improve detection capabilities
- Supported identity and access management using Active Directory, Azure AD, MFA, and Conditional Access policies
- Reviewed logs and alerts to identify suspicious activity and reduce false positives
- Assisted with compliance efforts and security audits by maintaining documentation and reports
- Collaborated with IT and network teams to implement security controls and reduce risk
Certification
- Security+, 2025, Comptia, COMP001021783220
- Network+, 2023, Comptia, COMP001021783220
Volunteer Experience
Volunteer, 11/01/18, Houston Food Bank
Timeline
Hardware Onboarding Administrator
IronEdge Group
09.2025 - Current
Risk Analyst
Ironedge Group
01.2025 - 09.2025
NOC Administrator I
Ironedge Group
06.2021 - 12.2024
Support Technician
Ironedge Group
10.2019 - 06.2021
Director of Operations
G3 Global Services
02.2017 - 09.2019
Helpdesk Coordinator
JPMorgan Chase/HP Services
11.2015 - 01.2017
Operations Manager
CIBTvisas
10.2009 - 10.2015
Workforce Analyst
Inovalon Holdings Inc.
06.2007 - 10.2009
BS - Business - Finance
Towson University