My portfolio
About Me
Cybersecurity and systems administration professional with experience supporting secure network operations, cloud infrastructure, database administration, and enterprise IT environments across military and private-sector organizations. Proven ability to manage Windows and Linux systems, administer network services, conduct vulnerability assessments, and strengthen cybersecurity controls to improve operational security and system reliability. Skilled in AWS cloud services, Oracle database administration, virtualization, VPN technologies, and infrastructure troubleshooting, with hands-on experience supporting automation and application development initiatives. Recognized for analytical problem-solving, adaptability, and improving system performance in fast-paced and compliance-driven environments. Currently pursuing a Master of Science in Cybersecurity and supported by a Bachelor of Science in Computer Science.
Cloud Platforms
AWS (EC2, S3, Load Balancing, Auto Scaling)
Azure
TECHNICAL SKILLS & SOFT SKILLS
Analytical
Critical Thinking
Complex Problem Solving
Judgment and Decision Making
Operating Systems
Windows Server (2012, 2016, 2019)
Linux (Ubuntu, Kali)
Microsoft OS
Networking
DNS
DHCP
VPN configuration
Network troubleshooting
Information technology
Cybersecurity
Vulnerability scanning
Web vulnerability testing
Security monitoring
Security policy development
Databases
Oracle database administration
Backup & recovery
Oracle RAC
Programming
Python
APIs
GitHub
Professionalism
High-tempo Mission Execution
Disciplined Problem Solving, Information Ordering
Communication
Technical Writing
Active Listening
Learning Mindset:
Passion for continuous learning and rapid adoption of new security trends and tools
WORK EXPERIENCES
NEXAH SARL | Douala, Cameroon
Administered enterprise network infrastructure by managing routers, servers, and critical network services, ensuring stable system performance and reliable connectivity for day-to-day business operations
·Configured and maintained Windows Server environments by supporting DHCP, DNS, and core administrative services, improving infrastructure reliability and strengthening system availability
·Optimized operational efficiency by deploying VMware virtualization and enhancing file server and storage-management processes, increasing operational performance by 30% and reducing system downtime by 25%
·Improved remote connectivity by implementing OpenVPN solutions and encrypted communication channels, improving data protection standards, and enhancing remote access for users and administrators
Conducted vulnerability assessments and security testing by utilizing Kali Linux tools and diagnostic techniques, identifying potential system weaknesses and supporting proactive cybersecurity risk mitigation
Supported AWS cloud infrastructure by managing EC2, S3, load balancing, and auto-scaling services while developing Laravel and React-based web applications, contributing to a 30% improvement in efficiency
Microfinance FOCEP S.A | Douala, Cameroon
Optimized Oracle enterprise systems and network operations by implementing enhanced security measures and infrastructure improvements, increasing uptime by 15% and reducing network latency by 20 milliseconds
Supported virtualization environments and infrastructure maintenance activities by monitoring system performance and assisting with routine administration tasks, improving stability, and sustaining IT services
Diagnosed and resolved database performance issues by troubleshooting Oracle, MySQL, SQL Server, and PostgreSQL environments, accelerating root-cause identification and improving system responsiveness
Streamlined technical support by resolving software installation and network-connectivity issues using LAN/WAN troubleshooting and Command Prompt utilities, increasing user productivity by 30%
Configured and maintained network connectivity solutions by supporting enterprise communication systems and monitoring infrastructure performance, strengthening system reliability, and minimizing disruptions
Administered Oracle database environments by managing backup, recovery, and routine maintenance operations, ensuring data integrity and supporting system availability across business-critical platforms
Supported Oracle RAC administration and database security initiatives by monitoring clustered environments and implementing access-control measures, strengthening system resilience, and improving data protection
Reinforced cybersecurity controls by implementing fingerprint authentication, password protections, PIN-code verification, and smart-card security measures, contributing to a 35% reduction in data breaches
Resolved server and infrastructure issues by configuring settings across Windows Server 2012 R2 and Linux environments, enhancing reliability and optimizing resource utilization for daily operational performance
Automated database management functions by developing Python scripts integrated with SQL-based processes, improving workflow, consolidating data practices, and reducing manual administrative effort
Simple Services | Douala, Cameroon
Executed operations in high-tempo environments by adhering to strict procedural, safety, and security standards, ensuring reliable task execution and sustained operational readiness under demanding conditions
Maintained accountability and operational readiness of assigned equipment and systems by conducting inspections, monitoring serviceability, and enforcing maintenance procedures, supporting capability
Strengthened installation security operations by implementing risk-management practices and utilizing Security Information and Event Management tools, contributing to a 30% reduction in security breache
Applied disciplined problem-solving and decision-making by responding to operational challenges in complex environments, supporting efficient execution, and reinforcing team effectiveness during critical assignments
Operations Support Coordination November 2023 - Present
Cyberlink | Douala, Cameroon
Enhanced network performance and system reliability for 50+ computers by implementing Active Directory solutions and optimizing user-access management, contributing to a 100% increase in network speed
Streamlined user authentication and remote-access support by configuring VPN connectivity and resolving technical support tickets through structured troubleshooting processes, reducing login times by 30%
Maintained stable IT operations by conducting proactive system maintenance, deploying software updates, and performing network diagnostics, improving performance and minimizing recurring technical disruptions
Resolved user-reported technical issues by analyzing root causes and implementing corrective actions across desktop, network, and connectivity environments, improving service responsiveness and continuity
Configured and supported enterprise network and user-management systems by administering access permissions and troubleshooting infrastructure-related issues, enhancing security, and improving reliability
UNITED STATES ARMY | Fort Hood, Texas
Cyber Manager, IT Support & Network Administrator January 2017 - March 2018
Assistant System & Network Administrator August 2019 - November 2020
Information systems management assistant & Database administrator June 2018 - July 2019
System and Network Administrator, Software Developer January 2021 - May 2022
EDUCATION
Bachelor's Degree
Computer Science September 2017 - July 2020
University of Douala | Douala, Cameroon
Built a foundation in computer science, including programming, databases, operating systems, and computer networks. Developed analytical and problem-solving skills through academic coursework and practical assignments, providing a foundation for further study in cybersecurity.
Master Degree
Cybersecurity Studies July 2025 - February 2027
American Military University (In Progress) | American Public University System
Graduate coursework includes intrusion detection and incident handling, computer forensics, telecommunications, and network security. Capstone research focuses on reducing credential-based intrusions and ransomware risk in resource-constrained healthcare organizations using NIST CSF 2.0 and CIS Controls v8.1.
Languages
English
French
German
Professional working proficiency
Native proficiency
B2 certificate
Basic Proficiency
Spanish
CERTIFICATIONS & TRAINING
CompTIA A+ Preparation
Ivy Tech Community College
Developing foundational IT support knowledge through coursework, assignments, and simulated labs covering computer hardware, networking, wireless connectivity, and system configuration.
PROJECTS & LABS
American Military University | 2026
Capstone practical Status: Completed
Healthcare Cybersecurity Capstone — Stella Health System
Developed a virtual lab representing a fictional healthcare organization to evaluate practical cybersecurity controls.
Tested role-based access permissions, centralized authentication logging, network traffic filtering, and backup recovery.
Conducted three baseline and three post-control runs for each scenario.
Reduced successful unauthorized file-access attempts from 3/3 to 0/3 while preserving authorized access.
Improved central visibility of the selected failed-login event from 0/3 to 3/3.
Blocked the selected SMB connection in all three post-control tests and successfully restored a fictional file in all three recovery tests.
Mapped findings to NIST CSF 2.0 and CIS Controls v8.1 and developed management recommendations based on risk, effort, and operational needs.
Cybersecurity Tutorial Website
Published academic portfolio | 2026
Created a management-focused website explaining the capstone lab, framework mappings, test methods, selected evidence, and implementation priorities.
Network Security Configuration Lab
Cisco Packet Tracer | 2026 | Completed
Configured wireless clients, MAC filtering, DMZ access, and HTTP port forwarding. Tested permitted and blocked connectivity and documented the results.
Desktop Computer Design Project
CompTIA A+ Coursework | 2026 | Completed
Designed a desktop computer for academic work, cybersecurity training, and virtualization. Selected compatible components and documented performance needs, upgrade options, and estimated costs.