Deandre Williams
Miami,FL
Summary
An experienced and responsible System Administrator with a strong ability to support servers, seeking meaningful employment with a company which will allow me to address and solve technical needs by applying my experience within system administration and completing deadline-driven projects.
Experienced systems professional prepared for this role with focus on network infrastructure, cybersecurity, and cloud computing. Strong emphasis on team collaboration and achieving results. Known for reliability and adaptability to changing needs. Skilled in systems analysis, troubleshooting, and automation. Effective communicator and problem solver.
Overview
13
13
years of professional experience
Work History
Senior Linux Systems Engineer
Raytheon
Remote
06.2024 - Current
- Administer and support enterprise Linux platforms running RHEL 7, 8 in production, including user accounts, access controls, disk space, and process monitoring
- Design and maintain automated, declarative infrastructure using Ansible, Terraform concepts, and Python/Bash scripting
- Build and maintain Ansible playbooks for provisioning, patching, configuration management, and compliance at scale
- Support containerized applications and Kubernetes platforms, including node-level troubleshooting and orchestration of microservices
- Deploy and manage Docker-based services and supporting Linux infrastructure
- Install, configure, and maintain NGINX, Apache, Tomcat, JBoss, and WebSphere application servers
- Perform OS installation, upgrades, and system configuration using Kickstart, PXE, and interactive installations
- Manage Linux virtual machines using VMware vCenter, Azure cloud, and AWS EC2 instances
- Configure cloud networking including NICs, VPCs, security groups, load balancers, and optimize cloud cost management
- Install firmware upgrades, kernel patches, and optimize system performance
- Provide MySQL, PostgreSQL, and Oracle database support including access, SQL queries, and kernel tuning
- Monitor systems using Prometheus, Grafana, SolarWinds, Splunk, and Datadog; troubleshoot P1/P2 production issues
- Automate system administration tasks, server provisioning, and monitoring agent deployments using Ansible
- Deploy application code to Dev and Production environments using Git and Jenkins pipelines integrated with SonarQube
- Implement CI/CD processes in Agile and DevOps environments using Jenkins, Git/GitHub, ANT, Maven, and Nexus repository
- Perform OS hardening and security management including SSH, FTP, NFS, Samba, LDAP, DNS, DHCP, HTTP/HTTPS, SMTP, iSCSI
- Audit infrastructure for patch compliance and remediate vulnerabilities
- Maintain technical documentation, operational runbooks, and provide guidance to junior system administrators
- Integrate ServiceNow workflows for change management and operational automation
- Research and implement new open-source and commercial tools to improve scalability, reliability, and automation
- Participate in rotating 24x7 on-call Linux support
- Improved system performance by identifying and resolving technical issues in a timely manner.
Site Reliability Engineer
Valley Forge Fabrics
09.2022 - 01.2024
- Administer, install, configure, and maintain Linux environments
- Install, upgrade, and configure RedHat Linux 6.x., 7.x., 8.x using Kickstart and interactive installation
- Manage user accounts, security, disk space, and process monitoring in Solaris, CentOS, RedHat Linux, Ubuntu
- Configure DNS, NFS, FTP, remote access, and security management
- Build Linux VMs in VMware, Azure, and AWS EC2 ,configure NICs, VPC, Security Groups, Load Balancers, and Windows servers
- Install, upgrade, and manage packages via RPM and YUM/Apt
- Install firmware upgrades, kernel patches, system configuration, and performance tuning on Unix/Linux systems
- Deploy and configure Nginx and Apache servers; manage patches, version control, and service packs
- Perform routine backups, schedule jobs, and enable cron jobs
- Assist users, troubleshoot logs, and support engineers, DBAs, and programmers
- Lead cloud migration projects to RedHat OpenShift and micro services transformation
- Deploy application code to Dev and Prod using Git and Jenkins pipelines
- Work in Agile/DevOps environments with CI/CD, Jenkins, Git/GitHub, ANT, Maven, Nexus
- Manage Web, Application, and Database servers (Apache HTTP, Tomcat, Nginx, WebSphere, JBoss, MySQL, MongoDB, PostgreSQL, Oracle DB)
- Perform OS installations, user/group creation, ACLs, LVM, patching, troubleshooting, and OS hardening
- Write/modify scripts in Bash and Python; Puppet Declarative Language experience
- Prepare security reports, conduct patch compliance audits, and advise IT/security teams
Linux/Unix Administrator
Modern technology Associates
Arlington, Virginia
06.2016 - 08.2022
- Installed RedHat Linux using Kickstart
- Created/cloned Linux VMs and templates in VMware; migrated servers across ESX hosts
- Managed backups, cron jobs, system/network logging, RPM/YUM packages, patching, LVM, and RAID
- Documented SOPs and system procedures; provided 24/7 support
- Administrated DHCP, DNS, NFS; created/managed user accounts, permissions, disk space, and monitoring
- Troubleshot server issues; maintained Sun Solaris 9/10 and RHEL 5/6
- Installed software/hardware upgrades and patches; monitored system performance with SAR, Netstat, Iostat, Vmstat
- Configured VERITAS Volume Manager for disk management
- Built and managed EC2 instances in AWS; Azure VMs; configured NICs, security groups, load balancers, Windows and Linux servers, and EBS volumes
- Optimized cloud resources and managed costs
Linux System Administrator
Arinc
01.2013 - 05.2016
- Assisted senior admins in Linux server administration, installation, performance monitoring, problem resolution, and production support
- Managed disks, partitions, file systems, and hot-swappable drives
- Maintained user accounts, file permissions, passwords, and system security
- Troubleshot hardware, software, and communication issues
- Monitored server and application performance; tuned I/O and memory operations
- Installed/configured SSH, MySQL, and Apache; performed backup/restore operations
- Managed file/system security, permissions, cron jobs, and supported over 200 PCs
Education
Computer Science
Penn State University
Skills
- Operating Systems: RHEL 3/4/5/6/7/8/9, Ubuntu, CentOS, Fedora, Windows Server
- Cloud Platforms: AWS (EC2, VPC, NICs, Security Groups, Load Balancers, EBS, Cost Management), Azure (VMs, Networking, Security Groups, Load Balancers)
- Hardware: HP ProLiant, Blade Servers, Dell R320/R410/R420/R510/R910/R810/R710/R610, PE 2970/2980, PE M10, Sun T2000/T5120/T5420, V490
- Software: MS Project, Linux file system, MS Office, ESX 4x/5x, Tomcat, Web/Application Server, Apache, Oracle
- Servers/Services: NFS, SSH, Telnet, Apache, DNS, Nslookup, Netstat, Nagios, TCP/IP, TCP DUMP, LDAP
- Scripting/Automation: Bash, Python, Ansible, Puppet, Terraform
- Monitoring: Prometheus, Grafana, SolarWinds, Splunk, Datadog
- Editors: VI, gedit
- Troubleshooting
- User support
- System testing
- Technical support
- Hardware and software installation
- Programming
- TCP/IP protocol
- System troubleshooting
- Client service and support
- Continuous improvement
- Cloud services
- Network infrastructure administration
- Network security
- Root-cause analysis
- Firewalls
- Software development
- Disaster recovery
- Cloud computing
- Scripting languages
Summary of Qualifications
- Over 10 years of IT industry experience in Unix/Linux system administration, cloud platforms, and multi-server environments. Specialized in command line UNIX/Linux systems with expertise in cloud-based infrastructure. Key skills include:
- Installing, upgrading, and configuring Linux servers using Kickstart and manual installations
- Installation and configuration of SSH, NGINX, Apache, Tomcat, JBoss, and WebSphere
- VMware ESXi and Azure cloud VM deployment and management
- Disk management via LVM, RAID, and VERITAS Volume Manager
- User/file management, permissions, cron jobs, and system hardening
- Troubleshooting Linux systems, OS, network, hardware, and application issues
- Automation and orchestration using Bash, Python, Ansible, and Puppet
- Performance analysis using SAR, Netstat, Iostat, Vmstat, and tuning for Oracle and MySQL
- Cloud administration in AWS and Azure including EC2 builds, NICs, VPCs, Security Groups, EBS, load balancers, cost management
- Strong written/oral communication, leadership, and team collaboration skills
Status
US Citizen
Timeline
Senior Linux Systems Engineer
Raytheon
06.2024 - Current
Site Reliability Engineer
Valley Forge Fabrics
09.2022 - 01.2024
Linux/Unix Administrator
Modern technology Associates
06.2016 - 08.2022
Linux System Administrator
Arinc
01.2013 - 05.2016
Computer Science
Penn State University