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Work Background
Dexian- LPLSnr. Linux Infrastructure Engineer
Jan. 2024United States Supporting automation tool for server build process for application teams.
Automate the provisioning of RHEL 7 /8/9 servers in vSphere for application teams using ansible, terraform and
GitHub.
Opensytems-CignaLinux Infrastructure Advisor
Jul. 2023 - Dec. 2023United StatesLinux Infrastructure Advisor
Supporting automation tool Itential built on LINUX based RHEL 8 Platform
Build, Configuration and Provisioning of Rhel 8 systems for Itential. Set up of build environment and ci/cd pipeline
using Jenkins. Configure and provision user access to Vcenter vSphere client.
Supporting deployment of jobs in Jenkins using webhooks and other build triggers.
Managed installation, upgrade and deployment projects and provided on-site direction for network engineers.
Used terraform IAC to set up AWS EC2 instances in VPC to deploy Elasticsearch cluster using ansible for
configuration.
Architectural Documentation of environment and runbooks.
Opensystems, Cigna Linux Infrastructure Advisor
Jul. 2023 - Dec. 2023Supporting automation tool Itential built on LINUX based RHEL 8 Platform
Build, Configuration and Provisioning of Rhel 8 systems for Itential. Set up of build environment and ci/cd pipeline using Jenkins. Configure and provision user access to Vcenter vSphere client. Supporting deployment of jobs in Jenkins using webhooks and other build triggers.
Managed installation, upgrade and deployment projects and provided on-site direction for network engineers.
Used terraform IAC to set up AWS EC2 instances in VPC to deploy Elasticsearch cluster using ansible for configuration.
Architectural Documentation of environment and runbooks. Project: Ansible Playbook Automation for Network Devices
Developed Ansible playbooks to automate provisioning of network devices, streamlining the configuration and deployment processes for the network operations team.
CBTSLinux Infrastructure Engineer
Aug. 2021 - Jul. 2023AMEX GLOBAL CONSULTING SERVICES 18850 N. 56th Street August 2020- Present Phoenix AZ 85054 • CICD/DevOps tools such as Jenkins, Nexus, GIT, XLR Release, Ansible, Confluence, Jira and Bitbucket. • Designing, implementing and managing Linux environment for Incident/Change & Patch Mgmt.
• Bridge the gap when working with the Product, Architecture, QA and Infrastructure teams.
• Job status monitoring, SLA monitoring and escalation, system health monitoring (Grafana, icinga, Vcenter), system • capacity profiling and monitoring, system usage and reporting. – • PM and workflow using JIRA
• Troubleshooting skills in Java based applications.
• Work in a 24X7 global model to provide support to Enterprise wide CI/CD tools on an on call • rotation basis
• Strong Linux/Unix Sys Admin background preferably in Red Hat platform
Apex Systems-Schwabb Linux Infrastructure Engineer
Aug. 2020 - Aug. 2021United States
CBTSEngineer II
Aug. 2020AMEX GLOBAL CONSULTING SERVICES 18850 N. 56th Street August 2020- Present Phoenix AZ 85054 • CICD/DevOps tools such as Jenkins, Nexus, GIT, XLR Release, Ansible, Confluence, Jira and Bitbucket. • Designing, implementing and managing Linux environment for Incident/Change & Patch Mgmt. • Bridge the gap when working with the Product, Architecture, QA and Infrastructure teams. • Job status monitoring, SLA monitoring and escalation, system health monitoring (Grafana, icinga, Vcenter), system • capacity profiling and monitoring, system usage and reporting. – • PM and workflow using JIRA • Troubleshooting skills in Java based applications. • Work in a 24X7 global model to provide support to Enterprise wide CI/CD tools on an on call • rotation basis • Strong Linux/Unix Sys Admin background preferably in Red Hat platform
Apex Systems | Charels SchwabbLinux Engineer & Stealthwatch Admin
Oct. 2019 - Aug. 2021Key Contributions: Stealthwatch, Net Witness, or similar API integration Stealthwatch alerting and live feeds, custom rules and alerts, Syslog templates
Provisioned and configured Stealthwatch management console and flow sensors and collectors
Defined in the environment where Ansible is being run. Resolved issues related to operational components for LAN, WAN, and voice systems.
Support u24/7 uptime and availability of entire RHEL 5/6/7 infrastructure for Census utilizing agile sprint methodology for off-cadence deployments. Provisioned teaming for Network infrastructure Templated images for RHEL 8 builds. Provisioned RHEL 8 STUGS template. Set up an ansible automation platform in aws cloud to automate the deployment of security updates.
Write terraform HashiCorp code to provision infrastructure in AWS and V center. Write terraform HashiCorp code to automate the provisioning of ssl certs.
Architected and implemented use of Jenkins CI/CD pipelines with kubectl orchestrated docker containers to automate the deployment of code for web applications.
Update, manage and build rpms and YUM repos for patching. Configure local yum repositories for housing application code. Configured, provisioned, and managed access to RHEL servers using ACL SELinux and PAM access controls.
Deployed RHEL VMs and local applications using RHEV 3
Automated Creation of RHEL VMs 6 and 7 using ansible and RHEV3
Managed and monitored installed systems for the highest level of availability.
Monitored and tested application performance to identify potential bottlenecks, develop solutions and collaborate with developers on solution implementation.
Defined enterprise processes and best practices and tailored enterprise processes for applications.
Participated in system development life cycle from requirements analysis through system implementation.
DNS. Portioned SAN and NAS storage
Ohm Systems, Inc.RHEL SME
Aug. 2019 - Aug. 2020Phoenix, Arizona, United StatesOhms Systems (Department of Commerce)
4417 W Buckeye Rd. Phoenix AZ, 85043 • Utilization of CICD/Devops framework and tools (Ansible, Git & puppet) to configure, manage, update and maintain environment applications and systems using STIGs and CIS methodology
• Monitoring of mission critical applications and systems using zabbix
• Logging monitoring and analyzing using automation tools (splunk) & systems utilities • Job, system health, capacity & usage monitoring, using Redhat rpm, yum and kernel utilities • Trouble-shooting system applications, connectivity, hardware & OS issue
• Building, maintaining & updating of system scripts (bash) for patching & sever hardening
• Use of LVM to manage file systems • Architecting (provisioning & configuring Linux environments using (VMware) for developers to build, test & deploy code • Active Directory Administration (TIER III Operations)
• Assist with SCCM Operational roles: image deploy, app deploy, patch, etc. for TIER 2 (Windows admins)
• Application Package Testing and Development
• Maintaining 24x7 RedHat RHEL 6/7/8 availability System Administration for users, services and applications • Trend Management
CBTSLinux System Engineer
Feb. 2019 - Apr. 2019Phoenix, Arizona, United States- installation, configuration and administration of Centos/Redhat using Kickstart Servers and unattended disk
● Assist in monitoring network security and intrusion detection while adjusting and updating systems to meet Company’s requirement
● Deployed Ansible I.T automation tool to schedule jobs like weekly and monthly backups, keep apache web servers running their most up to date version and configure monitor and provision servers’ inventory.
● Assist in ongoing system performance, system application tuning, hardware upgrades, and resource optimization as required. Configure CPU, memory, and disk partitions as required.
● Assist in creating and managing users and groups, assign permissions and control access to files
● Provide first level contact, troubleshoot application issues on the platform and convey resolutions to customer issues
● Provide telephone and in-person support to end users for network and application issues
● Document and update all customer correspondence relevant to internal information via ticketing system
● Give sudo access to users to perform limited administrative tasks ● Created shares and setup appropriate permissions ● Logging and tracking support calls
● Providing administration of Linux – create users and groups, permissions, folders, mail, web, installation.
● Creating and maintaining technical documentation.
● Analyzing and rectifying server/system logs to identify error messages
● Use Redhat satellite for patching, updating of listed eratras, populating online repos to Redhat cache
● Used AWS and EC2 to manage servers on the cloud, create instances/containers for use in test environments
Tech Forward LLC Linux Infrastructure Engineer
Jan. 2018 - Feb. 2019655 5th Ave ♦ New York, NY USA 10118Maintained smooth operation of multi-user computer systems through collaboration
with hardware and network engineers.
Installed and configured network printers and other peripheral devices.
Provisioning amazon ec2 RHEL, LINUX AMI and Ubuntu instances to support
deployments of custom application to cloud.
Set up and configured IAM user roles and provisioned access permissions for
enterprise users in
Configured security groups to restrict access between VPC environments, end users
and external traffic.
Configured CloudTrail to for monitoring aws infrastructure.
Configured IAM group policy for aws RDS clients.
Configured ECS services for elastic search services.
Configured aws lambda functions to guide auto-scaling of cloud infrastructure.
Set up private and public ec2 load balancers to route traffic for Elasticsearch external
services.
Configured route53 DNS for aws domain name resolution of ec-2 instances.
Set up aws S3 buckets for data storage.
Used terraform module to provision infrastructure for Elasticsearch using ec2 clusters
within vpc in aws
Sarepta Group CorpInfrastructure Engineer
Jan. 2016 - Dec. 2017Beltsville, Maryland, United States Deploy updates and fixes and provide Level 2 technical support to production
environment.
Develop custom application software to integrate with internal backend systems.
Perform root cause analysis of production errors and resolve technical issues with
server infrastructure and application errors.
Develop scripts to automate Elasticsearch application remediation.
Configured and provision Azure Service Bus queues for payload support.
Set up Azure Redis cache for backend database to optimize web server performance.
Configure and provision user access to Vcenter vSphere client.
Maintained Vcenter appliance and upgraded the DHCP server.
Configure provision and deploy EXSI HOST for virtual datacenter setup, joining
domains and configuring client access for domain and ad access.
Setup VMware vlan network for communication with enterprise DNS
Portioned SAN and NAS storage
Manage and troubleshoot hosts and client issues.
Created Templates for VM builds.
Deploying of new servers’ images and templates
Configured Azure CSPack to support application deployment.
Set up and configured Azure VM instances within a VPC configuring autoscaling to
cope with workloads.
Setting up web worker and Virtual machine roles for access to services, processes,
and queues.
Configured Azure Traffic Manager to federate access to public and private cloud
resources from within Azure and externally.
Configured Azure Operational Insights for monitoring instances of workloads for
application teams. Set up Intune to onboard application team resources into Azure
cloud for remote access for monitoring updating and integrating security tools.
Provisioned Azure SQL Database for web and application workloads
Set up Table, queue, files, and BLOBs for structured and unstructured data storage.
Managed use of various types of databases and configured, installed, and upgraded
new ones.
Designed procedures for system troubleshooting and maintenance.
Prince George's Community CollegeLinux System Administrator /SQL DBA
Aug. 2013 - Dec. 2019301 Largo Rd Kettering MD, 20774Linux Systems Admin: Installation, configuration and management of RHEL 5/6/7 and Centos Configuring and administering NFS,DNS,VSFTP,LDAP,NTP and Apache on Linux environment Extensive knowledge in creating users and groups with advance permissions and managing quotas Knowledgeable in hardware and software installations, upgrades, and maintenance, patch administration, kernel modification/upgrades using rpm and yum. Extensive knowledge in file system management, monitoring CPU, memory, disk space, logical volume manager and performance capacity analysis Experience in automation and scheduling jobs, scripts and administering task using cron, batch and at Experience in native RHEL system backup and data archiving tools Experience in administering VMware Infrastructure Client and Vsphere 5.0/5.5/6.0/6.5 Knowledge in troubleshooting Linux Servers, resolving boot issues and maintenance of server issues using rescue mode and single user mode Functioned as system admin for complex systems software development and service deployment project.Provide technical support in development, maintaining and using OS’s or subsystems.Administer, operate and maintain components of an AWS education cloud platforms. SQLDBA 1.Replication,Always on 2.stored procedure and functions 3.performance tuning 4.Upgrades and patching 5.Regular DB maintenance.
Prince George's Community CollegeHelp Desk Specialist
May. 2013 - Jun. 2014Largo mdAcademic tutoring for pre-algebra, algebra and calculus
Opensytems-Cigna
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