System Management Configuration

Jean Paul Ngiefong

Bowie, MD *****

240-***-**** *********@*****.***

SKILLS

Linux

Software Installation

Configuration Management

Multi-User System Management

User and Group Management

Linux Server Management

Log Analysis

Automation tools

Backup and recovery

File system management

Storage Management

Server monitoring

System monitoring

System Upgrades

Server maintenance

Patch management

Scripting Languages

Hardware and software installation

Virtualization

PROFESSIONAL SUMMARY

Proficient in prioritizing and completing tasks in a timely manner. Flexible learner and multitask. Customer focused with diverse industry experience including Redhat Linux administration, DevOps, Openshift, Kubernetes and AWS cloud. Enjoys learning new programs and processes. Very attentive to detail and able to work in a fast-paced environment. I also have a Public Trust experience with the UScourts and DOD.

Skilled in configuring, securing, and maintaining physical servers, including package management, system monitoring, kernel tuning, RAID setup, networking, and automation using tools like Bash, Ansible, and systemd. Proficient in troubleshooting hardware-level issues and optimizing performance in high-availability environments.

WORK HISTORY

UNIX/LINUX ADMINISTRATOR 02/2023 - 2025

Triafed - Washington DChttps://www.linkedin.com/in/jean-paul-ngiefong-044506128/

•Solves end user problems in an escalated support environment

•Facilitates operating system enhancements to improve the reliability and performance of Linux

•Generate, install, update and verify SSL Certificate

•Use yum, ansible to install and update software

•Worked on Red Hat linux version 5,6,7, and 8

•Engaged in a project to migrate Red Hat linux version 7 to 8

•Experience in administering Ubuntu Linux systems on bare-metal infrastructure, including installation, configuration, performance tuning, updates, security hardening and hardware troubleshooting.

•Use Vmware, ILo and KVM to manage virtual machines

•Deployed and scaled high-performance computing (HPC) clusters and GPU-enabled servers for ML workloads.

•Monitored GPU health and utilization using tools like nvidia-smi, DCGM, and Prometheus exporters.

•Resolved driver conflicts, version mismatches, and compatibility issues between OS kernels and driver modules.

•Experienced in conducting structured Root Cause Analysis (RCA) to investigate and resolve complex, customer-reported hardware, software, and infrastructure issues.

•Collected and analyzed system logs, performance metrics, and error reports (journalctl, dmesg, syslog, app logs, etc.) to identify underlying causes.

•Automated driver installations and updates using shell scripts and configuration tools like Python and Ansible.

•Configure and perform TCP/IP trouble shooting on servers

•Register services on RedHat enterprise satellite using subscription manager

•Follow standard procedures for analyzing information and determine course of action

•Interacts with customers to gather data, provide information, or resolve lower-level technical issues

•Accountable for maintaining the security and confidentiality of sensitive information

Creates test plans and procedures

•Determine development, testing, staging, and operating environments

•Preserve and revises documentation on the operating systems configuration

•Administers software life cycles

•Plan, test, install, and integrate new and upgraded versions of the relevant operating systems on organizational computer systems, all third-party software components

•Deliver technical support to applications and utility developers on requirements for integration into the operating environment

•Investigate and solve systems software problems efficiently and accurately while adhering to internal software management standards and procedures

•Resolve problems that may involve applications and the network

•Manage the daily activities of configuration and operation of IT systems

•Determine technical requirements and constraints and provide technical guidance, troubleshoot and support

REDHAT LINUX ENGINEER 11/2017 to 01/2023 USCOURTS/ ActioNet - Washington DC

•Assisted several users with resolving issues

•Provided support for Engineers, database administrators and programmers

•Troubleshoot and debug logs files to identify root cause of problems

•Troubleshoot Unix/Linux operation related issues

•Engaged in a project to transform all the products into microservices in containers

•Engaged in a project to migrate virtualized environment to Redhat Openshift

•Automate the deployment and configuration of the monitoring Agent (Nagios and Zabbix) using Ansible

•Automate repetitive tasks using ansible

•Wrote several ansible playbooks, to manage configurations

•Responsible for build and provisioning production servers using Ansible Scripts

•Responsible for deploying Application Code to Dev and Production using git and Jenkins

•Very good experience in GIT on Branching, Tagging and Merging the source code between different Branches

•IT administration like Creating Repositories, access control in GIT

•Managed deployments and post-deployment support to Production environment for all applications, supported more than 30 applications during the deploy phases in their software lifecycles

•Experience in Continuous Integration, Continuous Deployment, Build & Release

Management

•Hands on experience in automation tools like Git, Jenkins, Ansible, Terraform, Docker, Kubernetes and Nagios

•Interact with vendors to coordinate the maintenance and replacement of hardware that effects high and critical and major systems and environments

•Perform incident capture, verification, diagnostics and escalation incidents

•Provide systems diagnostics, sites through and ARGUS, MAM, NETCRAFT and DUCHES availability monitoring and reporting/escalation services

•Restarting virtual machines

•Responding to end user requests for technical support and assistance

•Good Experience in interlinking multiple Jenkins jobs with pipeline, integrated sonar to run as part of Jenkins build job, monitoring nightly builds and daily builds and Deploy with different environment DEV and PROD

•Experience in system automation with DevOps using CI/CD (Continuous Integration/

Continuous Deployment), Configuration Management, SCM (source Code Management), Build and Containerization tools

Involved in development of test environment on Docker containers and configuring the Docker containers using Kubernetes

•Identity Management, use CyberArk to manage appropriate identity and access permissions

•Worked on infrastructure with Docker containerization and maintained Docker Images and containers

•Utilized Kubernetes for the runtime environment of the CI/CD system to build, test deploy

•Worked in an Agile & DevOps environments with CI/CD, Build, Source Code tools such as Jenkins, GIT/GitHub, ANT, MAVEN and Nexus repository to build, integrate and manage projects (.jar, .war &

•Ear) for efficient software delivery solutions

•Experienced in automating system admin tasks like provisioning, installing, configuring, updating and deploying services using Puppet and Ansible

•Worked on building, deploying and managing Web, Application and Database servers like APACHE HTTP, TOMCAT, NGINX, WebSphere, JBOSS, MySQL etc

•Extensive working knowledge on system administration tasks like OS installations (Kickstart, PXE), user/group creations, ACLs, Logical Volume Management (LVMs), Package management (RPM, YUM, patching (RedHat Satellite), troubleshooting network/server /application failures etc

•Performed hardening script to harden services and/or protocols such as SSH, FTP, NFS, Samba, LDAP, DNS, DHCP, HTTP, HTTPS, SMTP, iSCSI etc

•Written and/or modified scripts in Bash, Python to automate day-today activities, worked on Puppet Declarative Language on Puppet, Ruby DSL while updating Chef Recipes, YAML on Ansible playbooks

•Experienced in installing, configuring Veritas Clusters (VCS), HA proxy for High Availability of applications, multipathing (DM-Multipath) and performed Backup and Disaster Recovery processes using Commvault, EMC Avamar, Veritas NetBackup & System Recovery

LINUX SYSTEM ENGINEER/DEVOPS 11/2016 to 10/2017 Tata Consulting Services (TCS) - Cleveland, OHIO

•Worked closely with clients as needed to troubleshoot and resolve issues

•Worked with clients and customers to assess their needs, provide information or assistance, resolve their problems, or satisfy their expectations

•Knows available products and services and committed to providing those quality products and services

•Prepare status reports on security matters to develop security risk analysis scenarios and response procedures

•Audit infrastructure for patch compliance and report discrepancies

•Review event logs for potential issues

•Assist in providing direct support to information security and IT staff for security related issues

•Recommend changes to security policy and consults on security issues in multi-disciplined environments

•Work on Red Hat OSE of Docker container, and Kubernetes

•Monitor the entire system like the CPU, MEM usage and NODES using Grafana and Uchiwa

•Manage Redis and other special pods on Jenkins pipeline environment

•Clean up docker-pool-storage and provide more space in the LVM when needed

•Created strategic plan for technology component development on Linux platforms

•Worked with Customers and business managers to identify System requirements

•Worked with the database and application development teams to support Linux apps

•Aggressively reviewed client requirements to ensure proper system integration

•Supervised and provided direction for new system administrators on projects

Work with JBoss, Oracle Database, MySQL teams for any OS related issues

•Install, upgrade and manage packages via RPM and YUM package management

•Install Firmware, kernel patches, systems configuration, performance tuning

•Installing, configuring, troubleshooting, and maintaining server configurations

•Provide support for both physical and virtual environment

•Respond to all Linux systems problems and resolving them on a timely basis

•Manage systems routine backup, schedule jobs and enabling cron jobs

•Create/Add users and enforce password policy

•Give permissions or remove permissions from users

•Create groups for collaborative task

SENIOR LINUX ADMIN 06/2013 to 10/2016

Dynamics Technologies - Greenbelt, MD

•Designing Ansible playbooks to manage configurations and automate installation process

•Deploying and monitoring scalable infrastructure on Amazon web services (AWS) & configuration management using Ansible

•Defining AWS Security Groups which acted as virtual firewalls that controlled the traffic allowed reaching one or more AWS EC2 instances

•Migrating many applications into AWS and provide cloud Security

•Communicating with team members for both Ansible Core and Ansible Tower teams to clarify requirements and overcome obstacles

•Maintaining configuration files for each application for build and install on different environments

•Plan, build and manage virtual Linux machines on VMWare vSphere and physical machines on Dell PowerEdge R10

•Perform various service configurations on Linux servers to include: NFS, SSH, FTP, Apache, and Tomcat and custom services

•Work closely with software developers as needed to troubleshoot and resolve issues

•Create and manage mount points for Oracle database install

•Creation and management of approved OS user and groups

•Managing filesystems space utilization using script scheduled as cron job

•Maintaining user-based security via password aging

•Maintaining file system and host security using chmod, chown, chgrp, immutable bit, iptables and tcp wrappers

•Turning off unused services on systems to strengthen host security

•Disabling direct ssh root login on servers

•Configuring, troubleshoot and manage TCP/IP networking on RHEL systems

•Performing software package installation, upgrades and updates using yum and rpm commands

•Applying system patches and updates

•Managing filesystems using fdisk and LVM

•Configuring multiple websites on one Apache http server using virtual Host containers

•Configuring NFS server and mount exported NFS resources at the client side

•Configuring, managed, and deployed of Jboss/Tomcat application server

•Changing root password on all server from centralized puppet master server

•Updating /etc/issue file for system notifications and warnings on user logins

•Setting up and securing password less user ssh authentication on servers using ssh keys

•Monitoring and controlled system processes using top, renice, kill etc

•Conducting system performance tuning and capacity planning

•Turning Linux kernel parameters as requested by database administrator

•Monitored system logs and activity on all servers to detect and resolve issues

•Configure NTP client on servers to synchronize time zone with the NTP server

Responding and closing out Remedy tickets

•Documenting server baselines and procedures

LINUX SYSTEM ADMIN 10/2012 to 10/2013

Saint John Community Services (SJCS) - Washington DC

•Created mount points for database administrators and developers to deploy application

•Tune Linux kernel using kernel parameters as requested by database administrator

•Configured NFS server and mounts exported nfs resources at the client side

•Performed critical system administration tasks from Single user mode

•Configured NTP client on servers to synchronize time zone with the NTP server

•Installed and configure Apache tomcat server for developers

•Performed file system backups and restores using local archiving utilities to include tar, gzip

•Troubleshooted and resolved networking issues

•Creation and management of approved user accounts and groups using active directory

•Setup secured password less ssh authentication on servers using ssh keys

•Performed system logs administration to detect and resolve issues

•Utilized cron to schedule and automate jobs

•Created directory symbolic links for users as requested

•Monitored and controlled system processes using top, renice, kill etc

•Conducted system performance tuning and capacity planning

•Managed filesystems using fdisk and LVM

•Software RAID configuration

•Maintained user-based security via password aging

•Turn-off unused services on systems to strengthen host security

•Configured and managed TCP/IP networking on RHEL systems

•Applied system patches and updates

•Configured Kernel Parameters for Oracle database install

•Scheduled and maintain cron jobs

•Configured and managed vsftp servers

•Responded to and closed out Remedy tickets

•Documented server baseline and procedures

EDUCATION

Prince George's Community College - Upper Marlboro, MD Associate of Arts

Criminal Justice, 06/2016

CERTIFICATIONS

•CompTIA Securty+ Certification

•Amazon Web Services (AWS) Certified Solutions Architect

•CPR/AED Certification

•Home Health Aide (HHA) Certification

•(RHCSA) Red Hat Certified System

LANGUAGES

French Spanish

Professional Working Limited Working

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