Support Engineer Technical
Resume:
Olomofe, Abiodun
ad6zgc@r.postjobfree.com
SUMMARY
Experienced Linux Administrator/Support Engineer with 6 Years of hands-on experience in managing Linux systems and providing technical support to ensure smooth operations. Skilled in troubleshooting complex issues, implementing system enhancements, and collaborating with cross-functional teams. Proficient in RHEL, CentOS and Ubuntu OS. Dedicated to delivering superior support and optimizing system performance.
CERTIFICATIONS
RedHat Certified System Administrator (RHEL 8)
Linux Essentials (LE-1 Certification)
SKILLS
Operating Systems: UNIX, Linux (RHEL/CentOS 6,7&8, Ubuntu 22.04)
Cloud Computing: AWS (EC2, S3, IAM, Cloud Watch, Security Group, VPC, Route 53), Azure (Virtual Machines, Storage accounts, Virtual Networks, Load balancer, Monitor)
Applications: Apache Web Server, Identity Management Server (IDM), NFS, SFTP
Networking: DHCP, TCP/IP, DNS, SSH and TCP/UDP
Monitoring tools: Nagios
Automation: Ansible
Security/Internet Services: DUO Security, SELinux, FirewallD, TCP Wrappers
Virtualization: VMWare VCenter, VMWare ESXi
Troubleshooting: Unix/Linux (Desktop & Servers) RHEL/CentOS/Ubuntu
Other Relevant Technology: Active Directory, Jira, Microsoft Outlook, Confluence, SalesForce, ServiceNow, GitHub, Maven, Nexus
PROFESSIONAL EXPERIENCE
Support Engineer/Linux Admin
Amazon
April 2022 to Present
Configured and deployed highly available scalable applications on AWS Cloud using EC2, RDS, S3, ELB, Auto Scaling and monitored these applications with Cloud watch and Grafana.
Used build tools like Maven for building and deploying artifacts such as Jar, war and ear
Used “nslookup” to query DNS servers and obtain server/device fully qualified domain names FQDN.
Configuring volume group and logical volumes, extended logical volumes for file systems growth needs using (LVM) commands
Performed process management like start/stop/kill of various processes
Hardened/Secured servers by patching, enforcing SELinux, firewalls and setting up password policies as required by the company.
Acting as a device (shelves) Subject Matter Expert (SME) for the US region, responsible for facilitating meetings with Software Development Engineers (SDEs) to enhance customer satisfaction and overall experience.
Diagnose and resolve technical issues reported by customers in a timely and efficient manner.
Communicate effectively with customers to understand their concerns and provide clear, concise explanations and instructions.
Utilize technical expertise in Linux field to troubleshoot and resolve issues, ensuring minimal disruption to customer operations.
Document troubleshooting steps, solutions, and best practices to maintain a comprehensive knowledge base for reference and training purposes.
Demonstrate a commitment to customer satisfaction by providing exceptional support and ensuring a positive customer experience.
Collaborate with cross-functional teams, including developers, product managers, and quality assurance engineers, to address complex technical issues and drive resolution.
Stay informed about emerging technologies, industry trends, and best practices to continuously improve skills and enhance the support process.
Manage support cases effectively, prioritizing tasks and meeting service level agreements (SLAs) to deliver timely resolution and maintain high levels of customer satisfaction.
Escalate issues to higher-level support or engineering teams as needed, providing detailed information and recommendations for resolution.
Conduct customer training sessions and onboarding activities to educate users on product features, functionalities, and best practices, promoting successful product adoption and utilization.
Utilized TCP/IP tools to identify and troubleshoot network connectivity issues, ensuring seamless network operation.
Achieved a 100% issue-resolution score by consistently delivering excellent service to internal and external customers, serving as the primary escalation point for advanced network and systems issues.
Assisted in onboarding new recruits and facilitated their seamless transition into the team, contributing to a smooth and efficient integration process.
Managed patching and updating activities for servers, ensuring they are up to date with the latest security patches and software updates.
Utilized QuickSight to develop interactive dashboards and analyze data, enabling informed decision-making to streamline processes, reduce ticket counts, and enhance customer experience.
Collaborated directly with Field Service Engineers to facilitate dispatch tasks and ensure smooth coordination of service activities.
Linux Systems Administrator
Walmart Inc
June 2019 to April 2022
Planning, installation, configuration, management and troubleshooting of Red Hat Enterprise Linux 7 platform
Install and manage virtual Linux machines on VMWare ESXi
Work closely with software developers as needed to troubleshoot and resolve production outage
Create mount points for database administrators for Oracle database install
Creation and management of approved user accounts and groups
Manage file systems utilization using script scheduled as cron job
Maintain user-based security via password aging
Maintain file system and host security using chmod, chown, chgrp, immutable bit, iptables and TCP wrappers
Turn-off unused services on systems to strengthen host security
Disabled direct ssh root login on servers
Configure and manage TCP/IP networking on RHEL systems
Troubleshoot and resolved networking issues
Perform software package installation, upgrades and updates using yum and rpm commands
Apply system patches and updates
Manage file systems using LVM
Perform critical system administration tasks from Single user mode
Create directory symbolic links for users as requested
Install and configure Apache httpd server to be used by developer to host web applications
Configure NFS server and mount exported NFS resources at the client side
Configured and managed vsftp servers
Change root password on all server from centralized puppet master server
Setup secured passwordless ssh authentication on servers using ssh keys
Monitored and controlled system processes using top, kill etc
Monitored system logs and activity on all servers
Resolved systems and process issues reported by Nagios
Responded to and closed out Remedy tickets
Performed file system backups and restores using local archiving utilities to include tar, gzip
Sends weekly report to management on overall system performance and health checks
Took turns for 24/7 production support
Linux/Unix Systems Administrator
Istanbul Aydin University - Istanbul, Turkey
February 2017 to January 2019
Installed RHEL 6 on servers and set up volumes
Installed and Administered patches and updates
Installed packages on servers.
Configured and managed Server networking.
Troubleshoot and resolved TCP/IP networking issues.
Performed user accounts administration.
Managed Password aging configuration on servers
Configured and mounted NFS resources.
Maintained file systems and host security.
Disabled direct ssh root login on servers.
Performed security hardening on dedicated servers by turning off unused services
Setup ssh keys for secured key-based authentication
Monitored and controlled system processes.
Monitored and Managed Server performance using associated tools.
Resolved systems and processes issues reported by Nagios
Performed logs administration to detect and resolve system errors
Managed systems storages using LVM
Configured Apache HTTP and Apache Tomcat Servers
Configure DNS client on servers
Utilized cron to schedule and run jobs
Offered various supports to software developers
Responded to and closed out Remedy tickets
Developed functional and technical documentation
EDUCATIONAL & PROFESSIONAL EXPERIENCE
2018
MBA: Business Administration
Istanbul Aydin University - Istanbul
Coursework in fundamentals of communication, strategic sales and retail marketing
Coursework in economics
Coursework in professional sales skills
2016
MBA: Business Administration
Lodz International Studies Academy - Poland
2011
Bachelor Of Agriculture: Agriculture
University Of Ilorin - Ilorin
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