Building Secure
Infrastructure
That Scales
I'm Majestor Kepseu. I design, deploy, and defend enterprise IT environments — from virtualized datacenters and secure network architectures to cloud-ready infrastructure. Master's in Network Security, hands-on with everything from network backbone installs to Active Directory at scale.
About Me
I bring security-first thinking to every layer of the stack, from physical network installs to enterprise Active Directory environments to containerized service platforms.
My background combines a Master's in Network Security with post-graduate training in enterprise systems administration. I've built VMware vSphere clusters with fault tolerance, deployed Exchange Server DAGs for high availability, and designed multi-site networks with defense-in-depth security.
What Drives Me
The conviction that well architected infrastructure prevents incidents, not just responds to them.
My Goal
To secure hybrid and cloud environments at organizations where infrastructure reliability is mission critical.
Experience
CAMTEL
Cameroon TelecommunicationsDeployed physical network infrastructure at Cameroon's national telecommunications provider — from site surveys and fiber backbone installation to network monitoring and equipment testing.
Featured Projects
Enterprise-grade infrastructure projects from foundational networking to full-stack IT architecture
Enterprise Integration
Unified Collaboration & Management Platform
Capstone project: AD-integrated platform with Zimbra, Zabbix, Zammad, PKI, and Docker-based service gateway.
Virtualization
VMware vSphere Enterprise Infrastructure
Production-grade virtualized datacenter with DRS automation, HA failover, and Fault Tolerance protection.
Messaging
Exchange Server 2019 with DAG
Highly available enterprise messaging with Database Availability Group and automatic failover capabilities.
Networking & Security
Multi-Site Enterprise Network
Secure multi-site network for NinjaPostal Corp with EIGRP routing, VLANs, ACLs, and centralized services.
Technical Expertise
Identity & Access
- Active Directory (multi-domain, trusts)
- Group Policy design & delegation
- DNS & DHCP enterprise configs
- LDAP integration
Virtualization
- VMware vSphere / vCenter
- DRS, HA, Fault Tolerance
- iSCSI shared storage
- VM lifecycle management
Networking
- Cisco IOS (routing, switching)
- EIGRP, OSPF, BGP
- VLANs, trunking, ACLs
- pfSense firewall & VPN
Security
- Enterprise PKI (AD CS)
- Snort IDS/IPS
- Port security & 802.1X
- Defense-in-depth design
Messaging & Collaboration
- Exchange Server 2019 & DAG
- Zimbra Collaboration Suite
- Mail flow & transport rules
- Autodiscover & DNS records
Tools & Platforms
- Docker & containerization
- Zabbix monitoring
- Windows Server 2019/2022
- Linux (Ubuntu, Rocky/Fedora)
Education
Applied Network Infrastructure & System Administration
Conestoga College — Kitchener, Canada
Advanced training in enterprise infrastructure, virtualization, and systems administration.
Network Security
SUP'PTIC — Yaoundé, Cameroon
Comprehensive study of network security, cryptography, and secure system design.
Certification Roadmap
Cisco CCNA
Foundational networking certification covering routing, switching, and network fundamentals.
CompTIA Security+
Core cybersecurity skills, risk management, and threat mitigation techniques.
AZ-900
Azure Fundamentals — cloud concepts, services, security, and pricing.
AZ-104
Azure Administrator — managing subscriptions, identities, storage, and compute.
AZ-500
Azure Security Engineer — security controls, threat protection, and identity management.
HashiCorp Terraform
Infrastructure as Code — provisioning and managing cloud resources with Terraform.
CCSP
Certified Cloud Security Professional — advanced cloud security architecture and design.
CISSP
Advanced certification in information security leadership and risk management.
Let's Connect
Open to infrastructure engineering, cloud security, and consulting opportunities.