Hi, I’m
Jonathan Ssekadde
RedHat System Administrator
Staten Island,NY
Summary
Seasoned Linux System Administrator with 4 years successfully managing diverse distros and multi-site installations. Specializing in Application Support on RedHat and CentOS, Linux OS distribution, and Windows environments. Experience managing, configuring, monitoring and troubleshooting server infrastructure operations across multiple platforms virtual and physical servers. Proficient at streamlining all scales of system architecture, from single terminals to networked servers. Expert at maintaining smooth operation of Linux-based hardware installations with dynamic performance in environments relying upon diverse operating systems.
Overview
6
years of professional experience
7
years of post-secondary education
2
Certifications
2
Languages
Work History
NextGenRemote
Linux System Administrator
01.2019 - Current
Job overview
- Installed system-wide hardware components, confirming interoperation and compatibility with Linux-based software distros.
- Setup temporary root access for application team that will be removed with AT job.
- Write my own Ansible Playbooks, Bash scripts to accomplish various projects and learning Python scripts
- Creating Documentation to help new staff following company standards
- Verifying daily Unitrends backup of assigned servers
- Take VMware snapshots of newly built VMs before handing it over to application teams
- Viewing Grafana dashboard to detect filesystems (LVM) running out of space and troubleshoot it, viewing services issues that need a restart/reload with systemctl Setting up NFS home directories and NFS mount for applications
- Follow Linux security standards and guideline, Record to Change Management
- View logs under /var/log for troubleshooting various issues
- Experience with ticketing tools ServiceNow.
- Participate on the ON-Call Rotation every 2 months. (Mon – Sun from 5pm to 8am)
- Using PowerShell to query Active Directory
- Experience in installing, configuring, Monthly patching and Daily troubleshooting of Red Hat Enterprise Linux.
- Assign Servers to patch groups, Assign repos to servers, Publishing Versions and Promoting Channels in RedHat Satellite
- Install and Decommission of servers using VMware EXSi 6.7/7.0 (VMware vSphere) for Virtual Servers and HP iLO 5 (HP OneView) for physical RHEL servers
- DNS entries and removal on Windows Server Datacenter 2019
- Joining RHEL servers to Active Directory. Querying AD users and AD groups using PowerShell
- Various System Administrator tasks: user management, File system management, Permissions and Ownership of files and Directories, Working with Vendor to setup applications, Sudo Files configuration, Kernel Tuning, Troubleshooting service failure such as network, ssh, etc.…
- Participate in various projects such as server migration from one datacenter to another and for virtual servers, from one Datastore (LUN) of a specific EXSI to another
- Data migration using SCP and RSYNC with a combination of automated tasks using AT and CRONTAB
- Setting SSH keyless communication between servers
- Setup SSSD communication between AD and RHEL servers and allow AD groups to access RHEL servers. And with a combination of sudoers files and bash scripts, AD users can switch to local user
- Interacted directly with users to diagnose and correct major system issues and address concerns.
- Maintained smooth operation of multi-user computer systems through collaboration with hardware and network engineers.
- Analyzed complex project server issues and worked on large enterprise and business-critical applications.
- Devised scripts and automation tools to improve system efficiency.
- Researched and recommended new technologies and strategies for improving system performance.
- Monitored networks and network devices to resolve technical problems quickly.
- Performed network security design and integration duties.
- Maintained flexible schedule and responded to after-hours and weekend emergencies.
- Resolved issues and escalated problems with knowledgeable support and quality service.
- Led server infrastructure development, quality assurance, staging and production systems.
- Managed backup and disaster recovery through strict data control and retention policies, personally handling recovery tasks when issues arose.
- Evaluated software products to determine compatibility with existing systems.
Prime Supports IncNew York, NY
IT Support Technician
01.2017 - 12.2019
Job overview
- Explained technical information in clear terms to non-technical individuals to promote better understanding.
- Configured hardware, devices, and software to set up work stations for employees.
- Responded to support requests from end-users and patiently walked individuals through basic troubleshooting tasks.
- Completed inventory counts and organized supplies.
- Explained technical information in clear terms to promote better understanding for non-technical users.
- Troubleshot and diagnosed problems to accurately resolve wide range of technical issues.
- Walked individuals through basic troubleshooting tasks.
- Monitored systems in operation and quickly troubleshot errors.
- Provided Tier 1 IT support to non-technical internal users through desk side support services.
- Installed, modified, and repaired software and hardware to resolve technical issues.
- Analyzed issues to identify troubleshooting methods needed for quick remediation.
- Configured hardware and granted system permissions to new employees.
- Provided basic end-user troubleshooting and desktop support.
- Documented support interactions for future reference.
- Suggested software and hardware modifications to reduce lag time and improve overall speed.
- Assisted with updating technical support best practices for use by team.
- Responded promptly to incoming sales leads and requests for technical support.
- Provided on-call support for critical issues related to software Failure.
- Updated documentation and produced reports.
- Researched product and issue resolution tactics to address customer concerns.
- Maintained and updated customer service database.
WalgreensNew York, NY
Help Desk Support Technician
11.2016 - 10.2018
Job overview
- Build Servers (HP Proliant Servers)
- Provided basic end-user troubleshooting and desktop support.
- Setup HP ILO
- Install SAS drive, RAM, and Raid Controllers, and Configure RAID
- Install VMWARE EXSI - Windows Servers - RedHat Servers
- Used Splunk to scan for security vulnerabilities
- Install DNS, RDP, and Domain Services
- Joining servers to the AD
- Daily backup of systems
- Daily scan of systems for viruses
- Completing outstanding tasks from the day shift
- Completing logs and notes for the morning meeting
Education
Mercy CollegeDobbs Ferry, NY
Bachelor of Science from Health Sciences
02.2011 - 06.2016
Mercy CollegeDobbs Ferry, NY
Associate of Science from Computer And Information Sciences
09.2014 - 06.2016
Skills
Knowledge with RedHat
Linux
Multi-User System Management
Server Management
Application testing
System monitoring
Performance testing
Product development
Infrastructure planning
System upgrades
Hardware knowledge
Servers expertise
Program installations
Technical Analysis
Accomplishments
- Resolved product issue through consumer testing.
Certification
Linux Essential Certification
Timeline
CompTIA Securtity +
03-2023
Linux Essential Certification
02-2022
Linux System Administrator
NextGen
01.2019 - Current
IT Support Technician
Prime Supports Inc
01.2017 - 12.2019
Help Desk Support Technician
Walgreens
11.2016 - 10.2018
Mercy College
Associate of Science from Computer And Information Sciences
09.2014 - 06.2016
Mercy College
Bachelor of Science from Health Sciences
02.2011 - 06.2016