Jezreel Nyange

Experience

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  KENYA EDUCATION NETWORK

  May 2015 - Dec 2022

  - Member of Computer Emergency Response Team (CERT) at Kenya Education Network- Member of Data Protection Committee. - Installation and setup of Linux Server OS; RPM based, Debian based and FreeBSD.- Advanced Unix and Linux server management and optimization.- Network monitoring and configuration management with collectd, munin, nagios, and cacti.- Application Virtualization & cloud services Orchestration using VMware, KVM, Ganeti, Synnefo and AWS.- Security logging and data visualization and analysis to identify malicious network and system activities.- Operational Knowledge of DDOS mitigation, DNS attacks, Malware exploits, Web security, Zone based firewalls.(Pfsense & csf)- Web Application firewall implementation and configuration (ModSecurity)- Web applications and systems penetration testing.- Vulnerability Scanning, report preparation and threat & attacks mitigation with open source tools like Nikto, NMAP, Joomscan, and WPscan.- Content creation for cyber security and network monitoring trainings.- Training on secure use of the internet / being safe online.- Host-based firewall setup on linux servers; iptables and configserver firewall (SCF).- Email server setup and installtion : Zimbra, Postfix and Exim MTA installation and setup, configuration and management.- Email filters testing, setup, configuration, administration and patching. (mailwatch)- Automation with Ansible.- Virtualization with openstack: Good understanding of openstack components and installation both manually and DevStack scripts.- Data center physical setup, switching, management and operations.- Network Auditing, designing and implementation of LAN. Show less - Installation and setup of Linux Server OS; RPM based, Debian based and FreeBSD.- Security logging and data visualization to identify malicious network and system activities.- Proficient in different CMSes; Wordpress, Joomla and Drupal.- Proficient in webservers setup and optimization ; Apache, Tomcat, Nginx.- Database setup and management with MariaDB and MySQL.- Application Virtualization & cloud services Orchestration using VMware, KVM and Ganeti.- Member of Computer Emergency Response Team (CERT)- Good knowledge working with opensource OpenVas vulnerability Assesment Scanner.- Good knowledge working with Acunetix - Vulnerability Scanning, report preparation and threat & attacks mitigation.- Vulnerability scanning of CMS based web application and CMS using open source tools like Nikto, NMAP, Joomscan, and WPscan.- Intermediate knowledge working with virtulization technologies such as VMware, Ganeti, Syneffo and AWS.- Penetration testing of common used applications and systems in the organization.- BASH scripting and scheduling (with cronjobs) of common tasks to increase the systems perfomances.- Analysing webserver and WAF (ModSecurity) logs for any information for preventive maintenance.- Systems administration - Zimbra email servers, network monitoring systems; cacti,nagios, opennms, ticketing systems rticketing and osticket.- Network Auditing, designing and implementation of LAN for our clients plus setup of Network monitoring systems.- Host-based firewall setup on linux servers; iptables and configserver firewall (CSF). Show less

  • Systems Administrator - Cloud Infrastructure and Cyber Security

    Jun 2019 - Dec 2022

  • Assistant Systems Administrator - Cloud Infrastructure and Cyber Security

    Jun 2016 - May 2019

  • Graduate Trainee - Systems and Network Administration

    May 2015 - May 2016
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  Commercetools

  Mar 2023 - now

  Site Reliability Engineer

  commercetools, inventor of headless commerce, is a cloud-based commerce platform that provides APIs to power e-commerce sales and similar functions for fast-growing brands. It is built on modern MACH® principles (Microservice-based, API-first, Cloud-native and Headless) allowing you to work with, not around, your commerce solution to tailor experiences to the exact needs of your business and its customers.