Cyrille Madjo
Owings Mills,Maryland
Summary
A devoted, passionate and resolute Linux Engineer holding more than 5 years of solid experience of installation, configuration and maintaining RHEL/ CentOS based systems and possess strong capacity of troubleshoot issues. Proficient in handling virtualization (VMware & ESXI), automation (Ansible & Scripting), monitoring (CLI & Nagios), orchestration (Ansible) and version control (GIT). Expert in user management, file management, storage management. Excellent in container-based technology (Docker) and cloud (AWS).
Overview
6
6
years of professional experience
Work History
Linux Engineer
UnitedHealth Group
Owings Mills, United States
02.2021 - Current
- Planned, installed, configured, maintained and administrated of Linux (Red Hat 6.x, 7.x and Centos 6.x, 7.x), VMware 5.x, 6.x and day - to-day system admin tasks
- Migration of servers form physical servers to virtual machine and vice versa, also done migration of users, applications and data.
- Managing vulnerability of RHEL systems with consistent scheduled patches and security hardening through provisioning of Ansible playbook.
- Experience with Amazon Cloud Services including, but not limited to, EC2 Instances, S3 Storage, IAM, RSD and Cloudwatch.
- Launching EC2 Instances, creating security groups and managing roles and permissions of users and groups.
- Setting up AWS Cloudwatch for continuous monitoring of EC2 instances and AWS resources to manage infrastructure integrity.
- Working with Docker, Docker hub and Docker registries, installation and configuration of Kubernetes and clustering them.
- Proficient in creating Docker images using Docker File, working on Docker compose and Docker container snapshots, and managing Docker volume.
- Expertise in managing version-controlled environment using GIT for sharing documentation privately and publicly within the environment.
- Shared data with different teams of environment using GITHUB, managed Git Repositories on GUI and CLI.
- Disk configuration & Managing File Systems in RHEL 6 & 7 environment using LVM
- Introduced new servers to the network.
- Monitoring of Performance of CPU, Memory, Disk utilization, and network using various monitoring tools like Nagios.
- Configured, supported and troubleshoot e.g.
- NFS, DHCP, DNS, FTP, SSH, Apache.
- Managed, installed and upgraded software packages using YUM and RPM and creating YUM repository files for offline servers.
- Managed the File System of all OS.
- Properly managed all the mount points.
- Took care of User Management including creating user, adding users to groups and managing user and groups access levels.
- Actively reviewed the system Log files of all system events and took proactive measures to ensure high availability of the infrastructure.
- Experienced in creating, extending, the physical volume, volume group, logical volume and SWAP dynamically on need basis.
- Configuring and troubleshooting NFS and NFS related issues and using Auto Mount service for the NFS shares to avoid boot related issue
- Monitored performance and performed kernel tuning using vmstat, iostat, sar, top and sysctl commands.
- Ensured secure access of users by configuring key-base authentication.
- Limiting user account privileges by configuring SUDOERS.
- Performed scheduled system backups, monitored system logs, performance monitoring and capacity planning in anticipation of system resource usage and needs.
- Taking backup and restored operations using tar and gzip.
Jr. Linux Admin
Trinitech Consulting Inc
Beltsville, MD
05.2017 - 02.2021
- Configure and deploy new equipment.
- Administer user accounts and security groups which included creation, deletion, and setting permissions for users.
- Created users both manually and with useradd command.
- Manage and monitor group policies and implementing appropriate permissions for files and folders and Managing Users and Groups.
- Created users, added users to group and assigned permissions to control their access.
- Work on Tickets as quick as possible and solve user's problems.
- Used Rsync to migrate users from one server to another.
- Analyzing the system logs and performing error analysis and recovery, documentation of procedures required for reference.
- Ensured the hardware functionality to the best of their health.
- Process Management using PID and killing processes.
- Created links, archive the directories and transfer them from one server to another with SCP.
- Made sure 24X7 support, handling tickets on day-to-day basis that involves identifying and resolving systems related tasks in accordance with priorities setup in dealing with trouble tickets.
Education
Associate Degree in Cybersecurity - CyberSecurity
The Community College of Baltimore County
Essex, MD12.2020
Bachelor of Science - Computer Science
University Of Yaounde 1
Cameroon ( Yaounde)10.2013
Skills
RedHat
DNS
DHCP
Partition
Ansible
ESXI
Docker
CentOS
FTP
TCP/IP
LVM
AWS
IAM
S3
Git
Kubernettes
NFS
TFTP
ACL
RAID
EC2
VPC
VMware
Git Hub
Bash Scripting
Timeline
Linux Engineer
UnitedHealth Group
02.2021 - Current
Jr. Linux Admin
Trinitech Consulting Inc
05.2017 - 02.2021
Associate Degree in Cybersecurity - CyberSecurity
The Community College of Baltimore County
Bachelor of Science - Computer Science
University Of Yaounde 1
Similar Profiles
Vikas KansalVikas Kansal
Senior Director Digital Product at UnitedHealth Care, UnitedHealth GroupSenior Director Digital Product at UnitedHealth Care, UnitedHealth Group
Shalalah HarveyShalalah Harvey
Workforce Analyst at UnitedHealth Care, UnitedHealth GroupWorkforce Analyst at UnitedHealth Care, UnitedHealth Group
Michelle RankinsMichelle Rankins
Team Leader at UnitedHealth Care Medicare & Retirement, UnitedHealth GroupTeam Leader at UnitedHealth Care Medicare & Retirement, UnitedHealth Group