Ajith Mani Kumar K

925-***-****

adv7r1@r.postjobfree.com

PROFESSIONAL SUMMARY:

Over 12+ Years of rich and diversified experience: strong credentials in delivering optimal results and business via technology solutions as Linux Administrator, AWS Solution Architect, DevOps Engineer and Application Support working on server - based operating system kernel configurations on Red-hat Linux, CentOS, SUSE, Debian 7 and Ubuntu 12.x/13.x. Tuning kernel Parameters, Trouble Shooting System & Performance Issues. Extensive experience includes DevOps Build/Release Management, AWS, Change/Incident Management and Cloud Management.

Experience in Configuration Management, Change/Release/Build Management support and Maintenance under Unix/Linux Platforms (REDHAT, CENTOS & Debian).

In Depth knowledge on n AWS Cloud services likeEC2, VPC, ELB, Auto-Scaling, Route53, IAM, EBS, AMI, RDS, S3, SNS, SQS, EMR, Kinesis, Lambda, API Gateway, CloudFormation template, CloudFront, CloudTrail, ELK Stack, Beanstalk, CloudWatch,

Extensive exposure in DevOps, Release Engineering, Configuration Management, Cloud Infrastructure Automation, it includes Amazon Web Services (AWS), Ant, Maven, Jenkins, Terraform, SVN, and GitHub...

Exposure in Configuring and networking of Virtual Private Cloud (VPC), Writing CloudFormation templates, and deploying AWS resources using it.

Having very good knowledge of Virtualization technologies like VMware ESX/ESXi, and involved in the maintenance of virtual servers.

Experience using Tomcat, WebLogic and Web Sphere 5.1/6/.0 Application server on Solaris and Linux Machines.

Knowledge in using Docker to virtualize the servers in Development and test environments with Docker containers.

Knowledge on Kubernetes Cluster Orchestration and deployment of applications in Pods

Experience in writing Ansible Playbooks and Puppet Manifests to provision Apache Web servers, Tomcat servers, Nginx, Apache Spark, and other applications.

Experience in writing Python, Shell (Bash), Shell scripts to automate the deployments.

Extensively knowledge on Jenkins for continuous integration and End to End automation for all build and deployments.

Expertise in developing build and deployment scripts using Maven (pom.xml) as build tools in Jenkins to move from one environment to another environments.

JAVA Application support and Maintenance in production servers.

Experience in using Nexus Artifactory Repository Managers for Maven builds.

Expertise in DevOps, Release Engineering, Configuration Management, Cloud Infrastructure and Automation. It includes Amazon Web Services (AWS), bamboo, Ansible, puppet, SVN, GitHub, Nexus, Tomcat and Linux.

Expert in Branching, Merging, Tagging, and maintaining the version across the environments using SCM tools like GIT, Bitbucket, and Subversion (SVN) on windows and Linux platforms.

Experienced in keeping up and looking at log archives using monitoring tools like Nagios, Splunk, CloudWatch, ELK Stack, Grafana, Geneos and Observability tools.

Used scripting to automate monitoring, maintenance, and security tasks.

Monitoring security devices and end points, event logs, alerts and third-party vulnerability communications.

Understanding of backup process, system monitoring, performance tuning, disaster recovery, and scripting.

Experience in databases, like MySQL.

Experience supporting applications that use Apache-tomcat, Mongo, MYSQL, Nginix, HA-Proxy, API web services, JBOSS, Wild-fly, Elasticsearch.

TECHNICAL SKILLS :

Operating Systems: RHEL/CentOS 5.x/6.x/7.x, Ubuntu/Debian/Fedora, Sun Solaris 7/8/9/10,

Build/Automation Tools: Ansible, Puppet, Jenkins, Maven, Ant, Terraform, BladeLogic.

Protocols: SIP, VoIP, Diameter, UCIP, SOAP, REST API

Cloud Technologies: Azure & AWS

Databases/Monitoring/Cluster: MySQL, DynamoDB, SQL Server, Elastic Search, Kibana, Datadog, Splunk, Nagios and Redis Cluster

Containers: Dockers, Kubernetes and Dagger.

Web/App Server: Apache, Tomcat, JBOSS, WILDFLY

Software Load Balancers: Nginx, HA-Proxy

Testing/Tools : Manual Testing, J-meter, SIPP, Burp Suite, Postman

Version Control Tools: GIT, Mercurial and GitLab

Scripting/Programming Languages: Shell Scripting and Python

Virtual Box, Docker, Kubernetes, VM-Ware

Development Methodologies: Agile, Water Fall.

Ticketing Tools: JIRA (UI and Py-API) and ServiceNow

CERTIFICATIONS:

Microsoft Azure Administrator Associate, Validation No: 993175631.

Project Management Professional (PMP)®, Validation No: #3027083

Scrum Master Trained

ACADEMICS:

Bachelor of Technology in Electronics & Communication Engineering from Thandra Paparaya Institute of Science & Technology(Jawaharlal Technological University, Kakinada).

PROFESSIONAL EXPERIENCE:

Company : 6D TECHNOLOGIES

Client: MTN Group Tunisia Telecom Banglalink Ooredoo (Qatar,Myanmar,Indonesia)

Role : Site Reliability Engineer May’2016 – Jan’2023

Responsibilities:

Managing the components and applications which are running on 100+ Linux servers.

Designing, Installing and implementing Ansible configuration management system as per the Automation process.

Writing the Ansible playbooks which is the entry point for Ansible provisioning, where the automation is defined through tasks using YAML format and Run Ansible Scripts to provision Dev servers.

Developing the Scripts in Shell and Python to automate the day-to-day activities performed within the environment (DEV/UAT & PROD).

JAVA Application support and Maintenance in production servers.

Performing DB Creation, Migration, Extension, Decommission.

Working on Continuous Integration tool called Jenkins.

Implemented centralized logging using Elasticsearch, Logstash and Kibana (ELK).

Play a significant role in establishing operational processes for a fast-growing distributed cloud platform.

Working on Release management for end to end deployment for the new feature launches and support the platforms.

Working on the POC to migrate the On-Premise Hardware to Cloud Environments like AWS.

Extensively exploring the usage of Docker containers in the Messaging Platforms.

Working on GIT to perform SCM Operations.

Performed Capacity Management analysis to ensure the H/W is able to cope with the extensively increasing environment.

Actively Participated in the OS Migration from RHEL 6 to RHEL 7.

Extensively worked on Performance related issues over the environment which includes Latency troubleshooting, Network troubleshooting and Hardware related issues.

Environment: Linux, Apache, Software Load Balancers, Redis, SSL, ELK, Grafana and Telemetry Process.

6D TECHNOLOGIES, Bangalore, India

Client: Millicom Group Free Senegal stc Kuwait BSNL India Airtel India

Senior Implementation Engineer May’2012 – Apr’2016

Implementation Engineer May’2010 – Apr’2012

Primary owner to establish objectives, developing requirements, planning schedules and monitoring technical issues w.r.t. network support

Defined and coordinated network support

Execution of configuration changes and product migrations as per client requirements

Owned the end-to-end testing of the application in the test bed, coordination with development team for defects resolution and deployment of the features to production

Ensured the response time for major incidents to be within the expected SLAs and high quality of service was maintained

Implemented the VAS products at client premises

Installation of OS, Databases, Signaling Cards and any other third-party software’s required for the service.

Administer Data center with 24* 7 supports for UNIX (Linux, Solaris, IBM and HP) Boxes. Installation, Configuration, Performance monitoring in production servers.

Good knowledge on organization of Data Center infrastructure (Server, Storage, Network) and DC facility such as cooling, racks Management.

Reviewed new server orders and verified that necessary hardware was on-hand and provided customer with ETA for any hardware that was not currently in stock.

Coordinated provisioning of power and data circuits with other departments as needed.

Troubleshooting Issues related to Apache Tomcat services.

Troubleshooting Issues related to MySQL connectivity Issues and performing DBA tasks which includes but not limited to DB optimization, Performance tuning, etc.

User and Password Management in RHEL Environment.

Automation of several tasks which includes Alarm Point Alerts, TPS Counts, Backup scheduling.

Environment: RHEL, MySQL, IIS, Apache/Tomcat, Jboss/Wildfly, WebLogic, Nagios, Nginix, HA-Proxy.

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