MAHLAMBANE MANGENA

• High-Availability & Redundancy: Architecting resilient systems to eliminate single points of failure, ensuring 99.9% availability for core banking services through advanced load balancing and failover strategies.
• Observability & Monitoring: Implementing comprehensive enterprise frameworks - including AppDynamics, Grafana, and Graylog - to maintain deep visibility and proactive detection of system health and performance.
• SRE & Automation: Streamlining operations via Python and Bash automation for log harvesting and metric integration, significantly reducing MTTR and manual intervention in production environments.
• DevOps Transformation: Engineering CI/CD pipelines to automate deployments, achieving a 70% reduction in manual tasks and eliminating deployment-related human error.
• Security & Compliance: Directing R&D and hardening infrastructure (e.g., Apache Kafka/KRaft) using TLS and SASL (Kerberos/SCRAM) to ensure strict alignment with PCI-DSS standards.

• High-Availability & Load Balancing: Orchestrated Nginx HA clusters and advanced clustering to maintain 99.9% uptime for high-concurrency internet banking and corporate platforms.
• Secure Edge Infrastructure: Hardened perimeter environments using Squid Proxy and JScape MFT, implementing proactive threat mitigation for sensitive financial data transfers.
• Infrastructure Observability: Directed Zabbix and Graylog administration, designing real-time alerting schemas and monitoring server health to maintain a robust security posture.
• SRE & Automation: Optimized operations through Docker environment management and custom automation scripting, streamlining frequent configuration tasks and system maintenance.
• Web & System Administration: Managed full-lifecycle Linux and Drupal administration, ensuring platform stability and providing technical advisory for complex integration projects.

• Multi-Platform Administration: Oversee full-lifecycle management of Linux, FreeBSD, and Windows servers across VMware, Proxmox, and Xen hypervisors.
• SRE & Automation: Streamline deployments via Docker and GitLab orchestration, leveraging custom scripts to automate frequent tasks and configuration management.
• Infrastructure Monitoring & Reliability: Utilize Zabbix for continuous performance and capacity reporting, ensuring maximum uptime and rapid recovery through robust backup strategies.
• Security & Identity Management: Administer mission-critical PKI infrastructure and FreeRADIUS to maintain network integrity and secure core platform services.
• Collaborative Engineering: Partner with development teams to establish best practices, implement complex releases, and translate business requirements into high-performance technical solutions.

• Fastnet: Spearheaded PCI-DSS policy implementation and strategic VMware capacity planning. Managed full-lifecycle administration for Linux and Windows Server environments, ensuring robust infrastructure support and enterprise-grade virtualisation management.


• Syrex: Managed Linux server administration and KVM virtualization, ensuring high-performance hosting environments. Directed Network Intrusion and Detection Systems (NIDS) to secure perimeter integrity while providing dedicated technical support for high-priority clients.


• Tsalano: Managed hybrid infrastructure environments, overseeing Windows and Linux server administration with a focus on AWS (EC2, Elastic Beanstalk) orchestration. Spearheaded server hardening, optimization, and perimeter security initiatives while maintaining high availability through robust backup and replication strategies. Acted as a technical advisor for new projects, directing the full lifecycle of server maintenance, OS patching, and high-concurrency web server administration (IIS & Apache)

Directed 11 years of full-lifecycle administration for VMware, Linux, and WAF environments.