JESSICA MBENJI

Work History

SYSTEMS ENGINEER III

FISERV, Inc

09.2023 - Current

Deploy new sites such as enterprise view, client view for multiple clients from different industries such as banking, agriculture, education and more
Manually and automatically renew certificates for clients using venafi
Reindexing and mongodb management
Experience in Linux system engineering, including installation, configuration, and administration of various distributions such as CentOS, and Red Hat.
Expertly secured network services, such as HTTP, FTP, and SSH, using TLS/SSL encryption protocols.
Build and manage virtual private networks (VPNs) for secure remote access and site-to-site connectivity.
Configure and manage network switches for optimal network performance and reliability.
Integrating the applications with cloud services provided by AWS Azure, such as storage, databases, messaging queues, and machine learning capabilities.
Efficiently manage and configured virtualization technologies, such as VMware ESXi for efficient workload consolidation and management.
Proficiently troubleshooted and resolved complex system issues, including kernel crashes through analysis of system logs and diagnostic tools.
Experience in designing and implementing fault-tolerant and highly available server infrastructure architectures using techniques such as clustering, and load balancing.
Deep understanding of system backup and recovery strategies, including full and incremental backups, and disaster recovery planning.
Efficiently manage and implement software package repositories and updates using tools like yum repository.
Implement OpenSCAP (openSCAP-Workbench for GUI systems ) on red hat Linux and centos systems to scan and assess system security compliance assessments and configurations.
Implement STIGs (Security Technical Implementation Guides) on Windows and Linux systems to enhance security posture and compliance, conducted vulnerability assessments, analyzed scanning output,and executed necessary changes to enhance security
Utilized Ansible automation tool to create YAML-based playbooks for consistent system configuration and routine tasks, ensuring efficient deployment of security configurations across servers
Implement and enforce auditing policies to track and monitor system activities.
Manage patching processes (manually or automatically with bash/ansible scripts) to ensure timely and secure application of software updates with the help of red hat satellite.
Successfully complete network audits and vulnerability assessments to identify and remediate security vulnerabilities. Proven ability to troubleshoot and resolve system issues, including performance, application errors, and network connectivity problems.
Implement and maintain Nagios for network and infrastructure monitoring.
Configure and manage storage area networks (SAN) for centralized and high- performance data storage.
Utilized tools such as tcpdump to troubleshoot network connectivity issues thereby capturing the packages.
Successfully managed load balancing technologies such as Citrix NetScaler, for distributing network traffic and ensuring high availability of applications.
Conducts regular security assessment and audits on DNS infrastructure , identifying and addressing potential weaknesses in the system
Implement and enforce audit policies to track and monitor system activities.
Use service now and jira for ticketing systems

SENIOR SYSTEMS ENGINEER

GIT-GO TECHNOLOGY

11.2021 - 06.2023

Implemented and maintained robust system security measures, including access controls, firewall configurations, and multifactor authentication installation.
Conducted proactive monitoring of system performance and security using tools such as Nagios, Splunk, Rsyslog, and Grafana, ensuring timely identification and resolution of issues.
Build, Managed and maintained Windows and Linux-based servers, both manually or automated(kickstart) ensuring high availability and optimal performance for critical business applications
Diagnosed and resolved a wide range of complex system issues, resulting in 90% up- time.
Managed the patching and scanning processes for systems, ensuring compliance with security standards, and minimizing vulnerabilities.
Implemented and managed active directory including domain controllers, group policies, LDAP, ensuring high availability and security.
Administered Yum repositories, ensuring proper maintenance and availability of software packages for system updates and installations.
Configured and managed DNS servers in an enterprise environment, implementing change mitigation strategies to minimize disruptions.
Played a key role in the configuration of DNSSEC for client networks , ensuring the integrity and authority od DNS data
Implemented DNS over HTTPS(DOH) and DNS over TLS(DOT) solutions to enhance the security and privacy of DNS communications for various clients
Proficiently created and managed virtual machines on Esxi and Vcenter, hyper-v optimizing resource allocation and ensuring efficient utilization.
Successfully managed Change Request Management using Service Now, Remedy, Jira, and Rally, ensuring adherence to change management processes and minimizing risks.
Implemented password-less SSH for secure login and communication between systems.
Led a team of engineers to successfully complete a major system upgrade on time and within budget.
Used automation tools such as ansible and bash for routine task such as system patching , user creation and more
Installed and configured servers, storage devices and networking equipment to meet availability and performance requirements.
Implemented a cloud-native architecture that reduced infrastructure costs by 60%
Created an automated backup and recovery system that ensures data integrity and
Migrated multiple servers and synchronization using rsync to transfer from VM-VM, from on-prem to cloud, and from one environment to another.
Conducted multiple system backup using Veeam. ensuring secure and fast data
Executed modification to Ansible playbooks to align with evolving server hardening requirements , incorporating STIGS, and other security measures , managed and analyzed scanned output providing accurate remediations , improving system security.
Created a system security checklist(STIG Viewer) for system evaluation .
Managed Selinux on systems ensuring systems securityand access control
Configured and maintained high-availability clusters for shared services such as databases and web servers.
Deployed new sites for various clients.
User management on LDAP

SYSTEMS ENGINEER

CEMENCAM

03.2018 - 08.2021

Build, Managed and maintained Windows and Linux-based servers, both manually or automated(kickstart) ensuring high availability and optimal performance for critical business applications.
Manage and troubleshoot users, groups, user passwords and permissions both on Linux and windows.
Managed and administered active directory infrastructure including user accounts, security groups and organizational units. Implemented and maintained Group policies to enforce security, drive system configuration and manage user access control. Implemented LDAP.
Automated scheduled tasks using cronjob and scripts organization. Developed and maintained scripts and automation tools such as bash to streamline routine tasks and increase operational efficiency.
Efficiently managed DNS services (BIND), including configuration, troubleshooting, monitoring, and optimization, for domain name resolution.
Implemented and managed DNSSEC for my organizations domain infrastructure, ensuring a secure and trustworthy DNS resolution process.
Spearheaded the adoption of DOH and DOT protocols enhancing the privacy and security of DNS communications across the network.
Migrated multiple servers and synchronization using rsync to transfer from VM-VM, from on-prem to cloud, and from one environment to another.
Conducted multiple system backup using Veeam recovery. ensuring secure in fast data for better efficiency and
Managed, configured and troubleshooted storage both on windows and Linux by setting up SAN, RAID, NFS, Rsyslog, LVM
Ensured system availability, performance, and security through proactive monitoring using Grafana, Splunk, Nagios, TCPDUMP for routine maintenance tasks ensuring 30% increase in systems accuracy and availability and ensuring minimal down time.
Effectively conducted system audits Implemented backup and disaster recovery solutions, using rsync, VMotion, and migration (BCP) ensuring data integrity and business continuity.
Collaborated with the team to implement intrusion detection such as honey pot and prevention systems, as well as data encryption solutions.
Developed and enforced server hardening measures using STIGS/Selinux in line with industry standards, ensuring system securing
Assisted in the development and implementation of security policies and procedures, such as firewall rules, host allow files, access control list, subnetting, honey pot, etc.
Managed network configurations, troubleshooting connectivity issues, and ensuring smooth operation of network services. Managed protocols (TCP/IP), subnets, switches, and routers Integrated active directory with other infrastructure components such as DNS, and DHCP
Managed users, groups, permissions, and access on both Linux and windows
Edited the kernel and Manage systems at boot up – GRUB and BIOS
Participated in capacity planning activities, forecasting future system requirements, and proposing infrastructure enhancements to support

Summary

Overview

Work History

SYSTEMS ENGINEER III

SENIOR SYSTEMS ENGINEER

SYSTEMS ENGINEER

Education

Associate of Science - Computer And Information Systems

Skills

Certification

Timeline

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