Summary
Experienced & Certified IT Professional / Consultant with expertise in Linux / UNIX / NIX, IT Security, DevOps, Hardening & Public and Private Cloud Based environments. This includes clusters, containers, networking, security, firewall, data centers experience, infrastructure design / revamp & implementation. Coup up with today's needs for Automation, Continuous Integration and Deployments (CI/CD), Configuration Management & Proactive Monitoring. Outstanding communication, customer service skills resolving technical issues, management, completion of tasks on-time & educating end-users. Team player making significant contributions to team & individual success. IT Trainer providing hands on training to corporate companies & professionals.

Configuration Management and Automation:
Ansible and Moderate experience with Puppet for configuration management of server farms and pushing the updates, Using Jenkins and Teamcity for Build Automations and deployment to Dev/Staging/Acceptance servers and Automation of users/group management (Single Sign On) LDAP, Privileges, Sever updates and patching.

Code Repository Management:
Management of code using SVN, GIT and Mercurial (Basic level) using native packages and using open source and commercial web based collaboration applications.

Email:
Email Security, Screening, Mail Scanner, ESVA, EFA, Zimbra with DKIM and SPF, IP Rotation, Bulk Email Marketing Server setups and Bulk Email SMTP (PowerMTA, Postfix) Tuning and Optimization

World Wide Web:
Administration and creation of multiple websites based on Wordpress, Joomla, Moodle (e-learning platform), Magento, OpenCart, Forums based on PHP-Nuke and vBulletin and Administration / Management of Liferay Community Portal based on JBoss AS.

Logging & Monitoring:
Using Nagios with SNMP and NRPE both for monitoring using native and custom plugins. Cacti for graphing monitored data. Realtime monitoring using Kibana with Elasticsearch. VeeamONE for Monitoring VMware Infrastructure, Monit for proactive monitoring and MRTG. Using Logstash for central logs forwarding and management, collectd, Using GreyLog to provide access to Developers for analyzing logs. ELK Slack, Grafana, InfluxDB, Datadog and Prometheus.

Commercial tools and applications:
Suite of products from Atlassian doing installation, upgrades, configuration, workflows and permissions including JIRA, Stash, Bamboo, Confluence and Crowd. Veeam Backup and replication, Veritas Storage and Cluster

Virtualization and Containers:
Virtualization on bare metal servers using VMware ESXi along with vCenter, OpenVZ for small containers, Citrix XenServer, KVM on Red Hat and Containers using native LXC (cgroup), Dockers and Amazon AWS. Docker Swarm, Apache Mesos, Kubernetes cloud and bare metal.

Security / Hardening:
Using Netfilter IPTables inbound and outbound filtering, marking packets and routing based on rules, Traffic Shaping. Linux / UNIX running Process management, WAF (Web Application Firewall) using OWASP rules for servers, privileges management, password policies, monitoring and alerts on users activities, SUID and SGID Binaries, IDS (OSSEC) and IPS (Snort).

Web Server, Proxy and Web Hosting:
Apache as Webserver, Reverse proxy (with and without filtering), NGiNX for PHP, Python and Ruby applications, Apache Tomcat with virtual hosts and text API-CLI manager, JBoss Application Server, Squid Proxy server as forward proxy server with heavy customizations, logging, SSL Strip, authentication and HTTP/HTTPs reverse proxy with Cache, Pools, Regex filtering and forwarding traffic for multiple domains. cPanel, Plesk, VestaCP and EHCP.

High Availability, Clustering and Load balancing:
High Availability on VMware ESXi between multiple hosts, NIC / WAN failover and load balancing, MySQL (Master- Master, Master-Slave Replication), TCP and HTTP Load balancing using HAProxy, NGiNX as load balancer and reverse proxy, clustering using Pacemaker, Heartbeat and Data replication (DRBD).

Backup and Restore:
Virtualization backups for VMware using GhettoVCB, Veeam Backup and Replication, Custom scripts, Incremental backups, Oracle RMAN Backups, Symantec NetBackup and management using RSnapshot, Duplicity, LVM Snapshots and Disks / Partition images.

Extensive experience with Debian, Ubuntu, Novell SUSE (SLES, SLED and OpenSUSE), Red Hat (RHEL), CentOS and Mikrotik RouterOS involving different complex scenarios and mission critical environments.