Worky | Meet our Talent - Mohammed Osman

Skills

DevOps

About

Mohammed Osman's skills align with Consultants and Specialists (Information and Communication Technology). Mohammed also has skills associated with Programmers (Information and Communication Technology). Mohammed Osman has 14 years of work experience, with 2 years of management experience, including a low-level position.

Work Experience

Sr. Linux/DevOps Automation Engineer

UnitedHealth Group

November 2021 - Present

A responsible and experienced Linux/Unix DevOps-Engineer, with great ability to support the server 24*7 hours with full efficiency and dedication. Also great at understanding of the issues related to the hardware and software with the profound ability to resolve issues, provide solutions, and delivering projects before the Service Level Agreements (SLA). Proven ability to be a strong professional, with the sound knowledge of the new technologies and advance applications. * Working with Rapid7 vulnerability tool to scan vulnerabilities on client servers and ability to collect vulnerability reports in csv format. * Written Templates for AWS infrastructure as a code using Terraform to build staging and production environments. Defined Terraform modules such as Compute, Network, Operations, and Users to reuse in different environments. * Designed and Developed AWS Cloud infrastructure utilizing Ansible and Jenkins for Continuous Integration with high availability and secure multi-zones and automated end-to-end transit hub connectivity resource deployment in AWS via Terraform. * Created Clusters using Kubernetes and worked on creating many pods, replica sets, services, deployments, labels, and health checks using YAML files. Development of automation of Kubernetes clusters via Ansible playbooks. * Performed automation engineer tasks and implemented the ELK (Elasticsearch, Logstash, Kibana) stack for Azure VM hosts, Architected and built out data analysis and dash boarding infrastructure utilizing ELK stack. * Managed Kubernetes charts using Helm and created reproducible builds of the Kubernetes applications, managed Kubernetes manifest files and managed releases of Helm packages. * Integrated Jenkins with various DevOps tools such as Nexus, SonarQube, Ansible and used Jenkins CI/CD Pipeline on Kubernetes container environment, utilizing Kubernetes and Docker for the runtime environment for the CI/CD system to build and test and deploy. * Worked on Kubernetes and Docker Swarm tools to deploy containers in a cluster and Performed automation tasks on various Docker components like Docker Hub, Docker Engine, Docker Compose and Docker Registry. * Installed Jenkins/Plugins for GIT Repository, Setup SCM Polling for Immediate Build with ANT Artifact repository (Nexus Artifactory) and Deployed the EARs and WARs in Tomcat Application server using ANT script as a CI/CD Process. * Configured, Maintained, and customized Ticketing & Monitoring tool such as JIRA and Confluence documentation as per requirements to promote team coordination and ticketing system. * Using Splunk and Nagios for Account maintaining and monitoring system performance. Worked with administrators to ensure Splunk is actively and accurately running and monitoring on the current infrastructure implementation. * Implemented, validated, and rolled out monitoring solutions utilizing Nagios and Thruk services, configuring server topologies within the Nagios deployment. * Involved in AWS services like EC2, S3, VPC, ELB, Auto Scaling Groups, Route 53, IAM, Cloud Trail, Cloud Watch, Cloud Formation, Cloud Front, SNS, and RDS. * Maintained the user accounts (IAM), RDS, Route 53, VPC, RDB, Dynamo DB, SES, SQS and SNS services in AWS cloud. * Created Issues and stories using JIRA for creation of TAG based deployments * Used CI/CD tool Jenkins, Git/Git Lab's, JIRA and Docker registry/daemon for configuration management and automation using Ansible. * Built docker images using Jenkins pipeline and push to Artifactory and deploy to OpenShift containers using Kubernetes for the Microservices. * Working on in upgrading, installing, configuring, and administering security and monitoring tools on Linux. * Developed Ansible scripts for an automated server provisioning and Docker images for isolation, reducing the time between provisioning and deployment from over 2 hours to less than 10 minutes. * appropriate AD groups followed by Adding users to global users' group. * Applied VMWare tools-patch updates for the virtual machines. * Creating content views and activation keys on Red hat Satellite 6.11, publishing versions as and when needed along with synchronizing Red Hat repositories. * Created a site-to-site VPN between on premise and Azure, using RAS for secure replication of on-premise domain controller, to the newly created Microsoft Azure domain controller. * Drive end to end deployment of various Components on the Azure Platform. * Provided 24/7 on-call rotation to the team and worked until issue was resolved.

Sr. Unix/ Linux Automation Engineer III

AT&T

July 2020 - November 2021

As the main source of server refreshes at Level 3 (L3), I control these projects that significantly reduce response time for application teams and customers. This includes updating almost every server in our infrastructure and carefully recording design proposals and implementation plans for the UNIX team. With our proposed strategic approach, it is possible to ensure refreshes' successful implementation as well as checking the health and status of servers after upgrade. With preemptive planning, each stage is designed in such a way that we minimize downtimes and disruptions and at the same time take full advantage of hardware upgrades. In general, my responsibilities include primary coordination of operations and execution of implementation strategies as well as smooth flow of upgrades aimed at optimization infrastructure working. * Experience in Supporting Data warehouse solutions in AWS, worked on various projects to migrate data from on-prem database to AWS, RDS, ELB, EMR, DynamoDB and S3. * Working on AWS ECS service and Setup clusters and deployed different tomcat-based applications on ECS and configured with Auto Scaling Groups and Load balancer for high availability. * Created AWS Route53 to route traffic between different regions and configure AWS IAM and Security Groups in Public and Private Subnets in VPC. * Manage the user accounts (IAM), RDS, Route53, VPC, RDB, DynamoDB, SES, SQS and SNS service in AWS cloud. * Design roles and groups for users and resources using AWS Identity Access Management (IAM) and implement Multi-Factor Authentication (MFA) on externally available servers and on AWS Console, Monitoring and alerting leveraging Cloud Watch and Cloud Trail. * Actively manage, improve, and monitor cloud infrastructure on AWS solutions and services using EC2, S3, VPC Peering, RDS, EBS, ELB, Autoscaling and Opswork. * Integrated AWS Dynamo DB using AWS lambda to store the values the items and backup the Dynamo DB streams and implemented Terraform modules for deployment of applications across multiple cloud providers. * Created python script using AWS API Calls to manage all resources deployed on AWS Lambda Functions. * Involved in working with Terraform to bring up a count of 'container instances' or 'nodes' in an AWS ECS cluster with different instances running on each one. * Written Templates for AWS infrastructure as a code using Terraform to build staging and production environments and defined Terraform modules such as Compute, Network, managed clusters reuse in different environments. * Linux Server monitoring for maximum availability using Nagios monitoring tools and taking steps to keep servers up and running under 24x7 environment for maximum uptime. * Installed and configured Splunk for Nagios log monitoring. * Worked with automating OS Patching the OS, Upgrading the OS, Migrating the OS, and performance monitoring. * Created various Terraform scripts to deploy Dev, QA and prod environments in AWS Cloud. * Installed and Implemented Ansible configuration management system. Used Ansible to manage Web applications, Environments configuration Files, Users, Mount points and Packages. * Deployed application which is containerized using Docker onto a Kubernetes cluster which is managed by Amazon Elastic Container service for Kubernetes (EKS). * Responsible for using Kubernetes Istio Service Mesh to address needs for traffic management, service security, and application monitoring, also to monitor all the services across clusters and data centers. * Worked on implementing microservices on Kubernetes Cluster (EKS) and Configured Operators on Kubernetes applications and all its components, such as Deployments, Config Maps, Secrets, RBAC and Services. * Configured and administered Jenkins for automated builds and Responsible for installing Jenkins master and slave nodes and maintenance of build pipeline. * Configuration of various plugins for Jenkins for automation of the workflow and to optimize and smooth running of build jobs. * Worked with ansible and salt-stack in writing playbooks and modules. * Experienced with writing ansible playbooks to do server builds as well as doing post build server health checks. * Migrated ansible playbooks to ansible AWX (ansible towers UI) for more robust automation performance. * Familiar with using Jenkins build parameters to deploy salt-state modules to specific servers in a bulk. * Worked on squid proxy migration using the salt-stack modules with templates and using Jenkins to apply the build initiate the state. * Automated the monitoring, Configuration Management, Log Aggregation of the Systems and Centralizing SIEM with AWS Cloud Formation, Puppet, Nagios and Elastic Search. * Created bash scripts to do complete RHEL LVM migration "scanning of LUNs, formatting disk, pvcreation to mapping the new allocated LUNs to the respective volume group" by push of a button. * Created tcpdump bash scripts to capture packets to a designated file system and enabled it on boot using ansible playbooks, in case of server outages. * Worked with BigFix console to find patches, create baselines, apply patches and check reports on all windows patching. * Created post commit and pre-push hooks using Python in SVN and GIT repos. Setting up the SVN and GIT repos for Jenkins build jobs. * Installed, monitored and configured Applications in Nginx and Apache Tomcat Server and establish connectivity to databases and troubleshoot issues on the fly. * Involved in setting up JIRA as defect tracking system and configured various workflows, customizations and plugins for the JIRA bug/issue tracker. * Installation, Maintenance, Administration and troubleshooting of Physical and Virtual server builds for Red hat/Oracle Linux/AIX, systems. * Developed & maintained Infrastructure as code using CI/CD pipelines deployments using Terraform. * Configured Ansible Tower for provisioning using Rancher cluster. * Have Migrated JFrog Artifactory from on premise to AWS cloud. * Created aggregated log search system using Logstash and Logstash-forwarder/File beat and Elastic search.

Sr. Linux AWS/DevOps Engineer

Athena Health

November 2019 - July 2020

The individual has extensive in managing various aspects of cloud infrastructure, particularly on Amazon Web Services (AWS) and Azure, installs, configuration and administration security and monitoring tools. architecting and implementing scalable, secure, and automated cloud infrastructures. Proven expertise in optimizing CI/CD pipelines, managing infrastructure as code, and ensuring efficient deployment processes. Adept at leveraging AWS services to enhance development workflows and overall system reliability. * Built K8s Cluster 1.28.1 on AWS using ubuntu 20.04 on VPC protected network, Provisioned the CA & Generating TLS Certificates for k8s cluster and etcd with external DNS domain certificate, DDNS-Sec DHCP dynamic update for pods, creating calico distributed CNI network on K8s, Envoy Proxy with Calico/Istio service mesh integration, built Jenkins with k8s plugin & OpenShift plugin CI/CD with terraform & ansible deployment, build Grafana with promethus plugin & AWS resource plugin, evaluated Merantis Enterprise Kubernetes Engine * Writing Templates for AWS infrastructure as code using Terraform to build staging and production environments and for deploying into AWS used automation pipeline tools like Jenkins, Ansible and Terraform. * Automated AWS components like EC2 instances, Security groups, ELB, RDS, IAM through AWS Cloud formation templates. * Worked on configuring S3 versioning and lifecycle policies for backing up files and archive those baked up files in Glacier and created monitors, alarms, and notifications for EC2 hosts using Cloud Watch. * Configured Active Directory accounts to single sign-on to AWS Management Console. Worked with security groups for EC2 instances along with ELB and Roles for Amazon services to interact with each other. * Migrating an infrastructure into Amazon Web Services utilizing AWS Cloud formation, Code Deploy, EBS and launched the environment in VPC. * Created and deployed RESTful APIs using API Gateway and Lambda functions using Cloud Formation templates and AWS Serverless Application Model. * Deployed application which is containerized using Docker onto a Kubernetes cluster which is managed by Amazon Elastic Container Service for Kubernetes (EKS). * Worked on rolling updates using the deployments feature in Kubernetes and implemented BLUE GREEN deployment to maintain zero downtime to deployment. * Wrote Python and Shell Scripts to automate log rotation of logs from web servers and automate administration tasks. * Authored Ansible Playbooks with YAML scripting to provision Nginx, Apache Spark, Apache Web servers, and Tomcat servers. * Implemented security testing practices such as static application security testing (SAST), dynamic application security testing (DAST), and software composition analysis (SCA) to identify and remediate security vulnerabilities. * Experience in installation and configuration of HBAs and associated firmware/drivers and scanning and configuration of LUNs/Volumes. * Configuration Management using Puppet & Chef Automation design using Chef. * Implementation of Build and deployment process with tools like Jenkins, GIT. * Design and document CI/CD tools configuration management. * Configured RDS instances using Cloud formations and terraform. * Involved in AWS services like EC2, S3, VPC, ELB, Auto Scaling Groups, Route 53, IAM, Cloud Trail, Cloud Watch, Cloud Formation, Cloud Front, SNS, and RDS. * Maintained the user accounts (IAM), RDS, Route 53, VPC, RDB, Dynamo DB, SES, SQS and SNS services in AWS cloud. * Implemented DevOps practice using JENKINS, GIT and Puppet. * Installing, Configured, and managing in Ansible Centralized Server and creating the playbooks to support various middleware application servers, and involved in configuring the Ansible tower as a configuration management tool to automate repetitive tasks. * Written Ansible Playbooks with YAML to automate infrastructure administration (infrastructure as code) and deployment automation. Created Playbooks to install and configure required packages to set up the environments. * Extensively worked on Ansible Playbooks with Ansible roles. Created inventory in Ansible for automating the continuous deployment. * Expertise in scripting playbooks to create networks, routers, VMs using OpenStack REST APIs. Deployed various services of OpenStack in Linux Containers. * Worked extensively on installing, configuring and supporting applications on Linux/Windows server environment. * Linux kernel, memory upgrades, and swaps area. Server builds using Red Hat Satellite Server and Red Hat Linux Kick Start Installation. * with different Linux Utilities like KICKSTART, SSH, FTP, Autofs, Quota Management, Wrappers, User Management, Process Management, Memory Management, and Text processing tools, Log Management, Package Management, Disk Management, and Swap Partition/Files Management. * integrating new systems and products such as Nagios, Solaris Management Center, and multiple Solaris and Linux VMware tools. * Authored Shell/Perl/Python scripting for automation tasks in Linux/Unix to automate resource, job monitoring, alerting and configuration tasks. * Ability to build deployment, build scripts and automated solutions, using scripting languages such as Shell, Perl, Python and Parsing Formats like Yaml, Json etc.

Sr. Linux Automation Engineer

IBM, New Jersey

May 2016 - November 2019

Working with DevOps team, SAN team, Network team, Support and On-call and the Facilities team to get projects accomplished and therefore earned and a displayed a strong breadth of technical knowledge. specializing in designing and implementing efficient automation solutions for Linux environments. Proven expertise in scripting, configuration management, and orchestrating workflows to streamline operations. Adept at enhancing system scalability, reliability, and overall performance through automation. * Installation, Maintenance, Administration and troubleshooting of Physical and Virtual server builds for Red hat/Oracle Linux/AIX, systems. * Built 2500 Red Hat Linux 7.0 servers from scratch and provide 24x7 production support. * Optimized performance by tuning Unix OS, kernel, memory, I/O, Database, Applications and Networks. * Installed and configured JUMP START Server. * Performed automated installations of Operating System using Jumpstart for Solaris and Kickstart for Linux. * Created Master-Slave configuration using existing Linux machines and EC2 instances to implement multiple parallel builds through a build farm. * Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities. * Extensively worked on hard disk mirroring and stripe with parity using RAID controllers. * Aggressively worked on networking protocols like TCP/IP, DHCP, and Ethernet, LAN /WAN, routers and switches. * Implemented Chef Recipes for Deployment on build on internal Data Centre Servers. Also re-used and modified same Chef Recipes to create a Deployment directly into Amazon EC2 instances. * Collaborate in the automation of AWS infrastructure via and Jenkins - software and services configuration via Chef Cookbooks. * Installed and Configured Chef Server, Workstation, Client servers and nodes. Written several Recipes, Cookbooks in Chef to automate the environment provisioning, Middleware Infrastructure Installations. * Worked on documentation - Chef Basics, Initial setup of Chef, Data bags implementation, Coding standards, Cookbook document, testing docs working with application deployment automation using Chef. * Responsible for managing CI/CD Environments based on Jenkins master, slave nodes and involved in plugin integrations and schedule jobs using hooks and creating the build scripts using Maven for Java projects. * Experience to build CI/CD Pipeline to automate the code release process using Integration tools like Git/ SVN, GitHub, Jenkins, and artifact repo. Used Shell script to perform testing on Jenkins. * Configuring and managing ELK stack, setup the elastic search ELK Stack to collect search and analyze log files from across the servers and integration of Application with monitoring tool New Relic for complete insight and proactive monitoring. * Experience in administering and maintaining Linux servers in production environments. Supported in the installation of packages/patches on Linux platforms. Implemented Backup & Disaster recovery management on Linux platforms. * Monitored AWS resources and applications using Amazon CloudWatch and set up alarms and notifications for timely issue detection and resolution. * Configured AWS Identity Access Management (IAM) Group and users for improved login authentication. * Assisted in installation and recommendation of Nagios and Net backup Tools. * Worked with Agile practices for Scrum teams using CI/CD, for internal custom applications and microservices based of container orchestration with Kubernetes AWS, OpenStack and Non-OpenStack Platforms. * working on version control systems like Subversion, and GIT and used Source code management client tools like Git Bash, GitHub, Clear Case, Git GUI and other command line applications in terms of branching, tagging and maintenance on UNIX and Windows environment. * Configured Centrify repo under yum. repos.d to install Centrify DC. * Add or Join Centrify to domain using the adjoin commands and verifying dzdo rules for various users and stakeholders. * Made changes to users or groups in Centrify Access Manager Directly as per the customer requirement and ensured it was controlled from AD. * Disassembler Firmware/Software with R&D reprocess, branding and risk analysis before deploy. * Transparent proxy, port masquerading with AD authentication * Invent private & public Cloud Platform with built-in secure channel and APIs, within VPC, the whole platform encrypted on storage volume level, integrated Engineering and R&D with centralized security policy control, lock down root & sudo access on kernel level for Enterprises.

Sr. System DevOps/ Engineer

Societe Generale

September 2015 - February 2016

SAN team, Network team, and the Facilities team to get projects accomplished and therefore earned and a displayed a strong breadth of technical knowledge, designing, implementing, and automating robust DevOps pipelines. Proven leadership in optimizing system performance, managing infrastructure as code, and driving continuous integration/continuous deployment (CI/CD) practices. Adept at leveraging cutting-edge technologies to enhance development and operations collaboration. * Working on Azure platform for developing, building and deploying the applications. * Worked on technical design and developed the application using Azure components such as Application Insights, Azure Active Directory, Power BI, Azure Functions, Azure Data factory, Azure SQL, Azure Storage accounts. * Creating ARM (Azure Resource Manager) Templates which deploys Azure resources to cloud in different environments (Development, Testing, Staging and Production) * Developed Azure Data Factory pipeline workflows to rapidly bulk-insert data from large BLOB files into a SQL Azure database. * Created Azure services using ARM templates (JSON) and ensured no changes in the present infrastructure while doing incremental deployment. * Designed and automated AZURE Infrastructure as a Service (IAAS) and Platform as a Service (PaaS), SaaS capabilities which includes virtual machine, container services, virtual network and cloud services. * Developed automation system using PowerShell scripts and JSON templates to remediate the Azure services. * Developing applications with Microsoft Azure Logic Apps. * Customized Azure Application Insights for logging and analytics to view the logs and metrics. * Involved in planning, design, development and implementation of the web application based on the business requirements. * Led implementation of Azure Active Directory for single sign on, authentication, authorization and Azure Role-based Access Control (RBAC). * Implemented Azure Kubernetes service to deploy a managed Kubernetes cluster in Azure and create an AKS cluster in the Azure portal, with the Azure CLI. * Responsible for implementing containerized based applications on Azure Kubernetes by using Azure Kubernetes service (AKS), Kubernetes Cluster, which are responsible for cluster management, Virtual Network to deploy agent nodes, Ingress API Gateway, MySQL Databases and Cosmo DB for stateless storage of external data, and setup reverse proxy Nginx in the cluster. * Worked on implementing backup methodologies by Power Shell Scripts for Azure Services like Azure SQL Database, Key Vault, Storage blobs, App Services etc. * Develop dashboards in Datadog, Splunk, Kibana and Grafana that trigger alerts. * Developed Azure Functions to copy files from file server to Azure Storage and Azure SQL DB. * Working experience of deployment of Java applications through WebLogic/WebSphere Application servers and build tools like Gradle. * Created complex Stored Procedures, Triggers, Tables, Views and SQL Joins and other statements to maintained referential integrity and implemented complex business logic. * Monitored system performance and capacity, conducted performance analysis and optimized system components for optimal performance and cost efficiency. * Implemented incident management processes, including monitoring, alerting and incident response, to ensure timely resolution of incidents and minimize impact on system availability and performance. * Creating PowerShell scripts to deploy using DevOps pipelines. * Configuration of build pipelines to build application using DevOps on hosted agent pools. * Configuration of release pipelines in DevOps to deploy applications. * Designing and developing SQL components for facilitating "feature flag" functionality and enable on-demand, incremental roll outs of new system functionality. * Creating custom logging components to track real-time status and results of all load processes. * Help keep the other application developers to use this RBAC model in their application. * Applied VMWare tools-patch updates for the virtual machines. * Troubleshoot to bring up Linux servers through the maintenance mode and through the Netback up tool. * Extensive experience in doing over 200 V2V's from one nfs-data store cluster to another. * Extensive experience in migrating 400 P2V's from one datacenter to another using the VMWare converter tool. * Extensive experience in the concept of LVM, User & System Resource Management and Job Scheduling.

Lead System Engineer

Hewlett Packard

March 2013 - July 2015

As a Lead Linux Engineer at Hewlett Packard, I use an array of tools and my mixed skill set to ensure that the functionality on our clients' Linux-based systems is as optimal in terms of performance and reliability. An expert in Linux system administration, scripting and automation, I eliminate manual operations so that CentOS. RHEL Ubuntu systems are managed effectively. Moreover, I have extensive knowledge of networks that would ensure smooth data transfer between the systems and guaranteed connectivity. Due to my experience with virtualization and container technology such as VMware and Docker, I arrange the placement of workloads successfully. Security is the top priority, where I use best practices ensuring that tools like SELinux intrusion detection systems wait in place. Monitoring and performance tuning is another key aspect of my responsibilities, using Nagios and Prometheus to improve resource allocation while detecting problems on-time. Since, I have also worked with cloud platforms like AWS and configuration management tools such as Ansible to handle infrastructure jobs efficiently! By integrating these sets of skills and tools, I provide outstanding results that exceed not only the client's but also business expectations. * As a Linux/Unix system maintained the various servers and Production Support of various applications in Red Hat Enterprise Linux, and Windows environment. * Building and configuring Red hat Linux systems over the network, implementing automated tasks through crontab, resolving tickets according to the priority basis. * 24x7 rotational on-call support, driving Root Cause Analysis (RCA), Preventive action follow-though, and participation in weekly operations reviews. Used ITRS to monitor alerts during on-call rotation, any new issues were documented through JIRA and Service Now ticketing tools. * Including managing the trouble ticket queue, responding to proactive monitoring alerts, executing change controls, routine maintenance, shell scripting, performance monitoring, tuning, and system diagnostics. * Written multiple recipes and also customized facts for efficient management of the Chef clients. * Experienced with installation of packages, patches, maintenance & RPM updates on Red Hat Linux. * Installing, patching, upgrading guest OS on VMware and vSphere client systems. * Analyzes, logs, tracks and resolves complex software/hardware matters of significance pertaining to virtual infrastructure. * Expert in Upgrades, installs, configuration and administration security and monitoring tools on Linux. * Cleaned up space on filesystems crossing 90% threshold. * Developed a comprehensive build testing plan and did a Proof of concepts (POC) for various applications. * Experience in installing Solaris 9/10, Linux RedHat/Fedora. Assisted in installation and recommendation of Nagios and SUSE Manager Tools. Troubleshooting network, application, and server related issues. * Created RPM packages using RPMBUILD, verifying the new build packages and distributing the package. * Experience in Shell scripting (BASH, KSH) to automate system administration jobs.

Discover Credit Cards

April 2010 - February 2013

Administration professional with comprehensive expertise in managing and optimizing UNIX-based systems. Proven track record in system configuration, performance tuning, and troubleshooting. Adept at ensuring the reliability and security of AIX and Linux environments. * Configuration and Maintenance of AutoFs in AIX and Linux. * Monitored trouble ticket queue to attend user and system calls, attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment. * Updated data in inventory management package for Software and Hardware products. * Performed common system administration task including adding users, creating file systems, configuring volumes weekly basis. Administered Linux servers Linux (Red hat - RHEL 4/5/6), for several functions including managing Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production. * Worked on migration of consumer data from one production server to another production server over the network with the help of Bash scripting. * Setup NFS file systems and shared them to clients. Worked on SAN Migration for AIX/Linux. * Troubleshooting and configuring NAS and NFS mount points. * Troubleshooting network, application, and server related issues.

Mohammed Osman