Summary
Overview
Work History
Education
Skills
Certification
EMPLOYEMENT HISTORY
Timeline
Generic

Sasikumar D

Summary

Seasoned IT professional with 10+ years of experience across diverse technologies including (Cloud Infra & DevOps, SAN Storage & Linux System Administrator). Cloud Engineer with 5+ years of experience designing, implementing, and managing cloud infrastructure on AWS and Azure. Skilled in automation, scripting, and configuration management to ensure efficient cloud deployments and operations. Designed and developed Cloud Service projects and deployed to Web Apps, PaaS, and IaaS. Excellent communication and collaboration skills, adept at working cross-functionally with developers, DevOps, and security teams. Extensive experience with core AWS services like EC2, S3, VPC, IAM, CloudWatch, and Lambda. Successfully built and maintained highly scalable and secure cloud architectures for Govt applications. Implemented infrastructure as code (IaC) using tools like CloudFormation and Terraform for automated deployments. Proven track record of migrating on-premises infrastructure to Azure, achieving significant cost savings and agility. Expertise in Azure services like App Service, Azure Functions, Azure Storage, and Azure Active Directory. Proficient in scripting languages like PowerShell and Azure CLI for automating cloud tasks. Experience with DevOps tools and practices, including Azure DevOps and CI/CD pipelines.

Overview

10
10
years of professional experience
1
1
Certification

Work History

SENIOR CLOUD ENIGNEER

NTTData Singapore
Singapore
03.2022 - Current
  • AWS Responsibilities: Provisioned, managed, and monitored Linux/Windows/Ubuntu servers on Amazon EC2 using SNS and CloudWatch
  • Created and managed AMIs, snapshots, volumes, and databases on Amazon RDS
  • Developed Python scripts with Boto3 for AWS automation and Bash scripts for EC2 bootstrapping
  • Managed ELB, Route53, S3, CloudWatch, IAM, and VPC to align with business needs
  • Implemented complex IAM policies, roles, and user management for secure access
  • Proactively monitored and maintained AWS infrastructure, including backups, patches, and scaling
  • Containerized applications with Docker, managed private registries, and maintained containers using Kubernetes
  • Created highly scalable and fault-tolerant multi-tier AWS environments using Terraform and CloudFormation
  • Used Ansible for configuration management and playbook writing
  • Automated builds and deployments using Jenkins, integrating unit tests and code quality analysis tools like SonarQube
  • Hands-on experience with Apache, Tomcat, JBoss, and MySQL
  • Configured VPCs, subnets, and ACLs to enforce network segmentation and security
  • Setup and managed CDN on Amazon CloudFront for improved site performance
  • Managed GitHub repositories and permissions, including branching and tagging
  • Handled L1 and L2 level issues, participated in client calls, resolved tickets, and maintained system availability in adherence to SLAs
  • Azure Responsibilities: Designed and implemented robust virtual networks: Architected Azure virtual networks, connecting them to on-premises environments using ExpressRoute, VPN Gateways, DNS, and Load Balancers
  • Managed multi-cloud data recovery: Implemented Azure Site Recovery for disaster recovery and Azure Backup for data protection in both Azure and on-premises environments
  • Enhanced network segmentation and security: Designed Network Security Groups (NSGs) to control traffic flow and implemented Azure Virtual Appliances (VMs) for firewall, WAN optimization, and intrusion detection
  • Utilized Terraform for infrastructure as code: Reliably provisioned and managed Azure infrastructure using Terraform, ensuring consistency and version control
  • Streamlined VM provisioning: Created PowerShell and CLI scripts to automate VM builds, including cloning and snapshotting
  • Adopted DevOps practices: Embraced Azure DevOps pipelines for build, release, and infrastructure as code management, ensuring efficient deployments
  • Enabled proactive monitoring: Installed and configured Log Analytics to collect and analyze data from Azure resources, identifying and resolving issues quickly
  • Created a change management dashboard: Developed a custom dashboard to track the success and failure of live deployments, promoting visibility and continuous improvement
  • Provisioned and managed SQL databases: Created Azure SQL databases, performed monitoring and restoring, and successfully migrated Microsoft SQL Server databases to Azure SQL
  • Explored cloud data warehousing: Participated in testing Snowflake to evaluate its potential for cloud-based data warehousing solutions
  • Designed custom routing: Implemented User Defined Routes with custom route tables to meet specific networking requirements
  • Deployed Bastion Hosts: Enhanced security by implementing Bastion Hosts for controlled communication between private and public hosts
  • Managed Windows updates: Planned, designed, and implemented Windows Server Update Services (WSUS) for efficient patch management.

SOFTWARE AND CLOUD ENGINEER

LTI (L&T Infotech) India
Chennai
06.2021 - 03.2022
  • Managed GitHub repositories and permissions, including branching and tagging
  • Used Ansible for Configuration Management and having good knowledge of writing Playbooks
  • Used Ansible to do configuration and to automate deployments
  • Worked on creating Kubernetes cluster from scratch to end
  • Worked on Pod Creation and managing Containers
  • Taking backup of Terraform state files and storing on S3 Bucket
  • Administrated and Implemented CI tools Jenkins for automated builds and integrating Unit tests and Code Quality Analysis Tools like SonarQube
  • Hands on working experience on Web Server (Apache), Application Servers (Tomcat, JBOSS), DB Server (MySQL)
  • Setup/Managing VPC, Subnets, make connection between different zones blocking suspicious IP /subnet via ACL
  • Reason for leaving: Got an opportunity to work in Singapore.

Cloud Engineer and Migration Specialist

IBM Pvt Ltd
India
01.2017 - 01.2021
  • Discovery of the Environment using tools such as Cloudscape and manual discovery using the inventory
  • Creating a Migration plan based on the current Environment and the Target
  • Preparing Runbooks for the T-minus tasks to be performed for the Migration readiness
  • Migration execution using native VMware tool – HCX, Carbonite, Zerto and TDMF(AIX)
  • Create a target environment in IBM cloud, AWS & Azure by using the terraform script
  • Mitigating issues pre-migration to ensure successful cutover of the Server
  • Pre and Post Migration tests (IVT, AVT) using SMT scripts to validate the environment has been migrated successfully
  • Configuring NAS (NFS, CIFS shares) post the migration of the server
  • Containerization of existing Applications on traditional/VM environment and migrate to the Containerized platform
  • Hands on experience on upgrade of OpenShift from 3.x to 4.x using CAM.

EMC Storage Administrator

IBM Pvt Ltd
India
01.2014 - 01.2017
  • SAN Storage Responsibilities: Storage provisioning and administration in EMC VMAX, VNX, ISILON
  • Creating exports & shares in VNX and Isilon and zoning, troubleshooting Brocade, Cisco switches
  • LUN Migration and LUN Masking and storage array pool extension
  • Perform capacity planning related to storage growth and system utilization, trend analysis and predicting future storage requirements
  • Implemented Disaster Recovery solutions using EMC RecoverPoint for production systems and tested disaster recovery readiness
  • Knowledge in power path software and HBA management software
  • Monitoring and Administration of SAN switches and HBA Cards
  • Upgrading firmware upgrade for EMC VMAX, VNX, RecoverPoint and coordinating with server team for host validations
  • Troubleshoot and resolve Storage related issues generated in production environments and handle performance issues in VMAX and VNX arrays
  • Performance monitoring and generation of storage performance reports using SRM
  • Linux Responsibilities: Handling daily user raised Incidents like priority 1, 2, 3 & 4 and which generates from the monitoring tool
  • Working on Server down Situations and diagnosing and troubleshooting of Linux servers
  • Install, update, query and manage RPM software packages
  • Support VMware clients like adding CPU, Memory, and disks and maintenance of Linux file system
  • Monitoring the health and stability of Linux environment
  • Multipath configuration and administration
  • NFS configuration and Administration
  • As per daily/weekly checks performed ‘cron' job tasks
  • Hardware replacement like Power supply, internal hard disk
  • System Board
  • Upgrading BIOS, firmware, and drivers (on Hp ProLiant and IBM X serious serves)
  • Creating raw disk partitions for DB's under LVM and Veritas Volume Manager
  • Handling new service requests like adding Virtual IP's, setup new virtual machine
  • Handling service requests Building New physical and virtual machines.

Education

B.E (Bachelor of Engineering) in Information Technology -

Annamalai University
05.2010

Skills

  • Operating System: Linux, Ubuntu, Windows Server 2012/2019
  • Configuration Management Tools: Ansible, Terraform, CloudFormation
  • Containerization: Docker, Kubernetes
  • Provisioning Tools: Terraform, CloudFormation
  • CI/CD: Jenkins
  • Source Code Management: GitLab
  • Build tools: Maven
  • Deployment Tools/ Servers: JBOSS, Apache, Tomcat
  • Database: MySQL, SQL Server 2012, Postgres SQL
  • NoSQL: Dynamo DB (AWS)
  • Data warehouse: Snowflake
  • Public Cloud: Amazon Web Services & Azure
  • Atlassian tools: JIRA
  • Repository Tools: Nexus Artifactory, DockerHub, GitHub
  • Code Quality tool: SonarQube

Certification

  • AWS Certified Solutions Architect - Associate
  • Azure AZ-900 Certification - Fundamentals
  • IBM Agile Explorer - Issued Dec 2020
  • AWS Academy Graduate - AWS Academy Cloud Architecting
  • VMware Certified Professional (VCP) 6.5

EMPLOYEMENT HISTORY

  • Working in NTTData Singapore from Mar-2022 to present.
  • Worked in LTI (L&T Infotech) India, from June-2021 to Mar-2022.
  • Worked in IBM Pvt Ltd India, from July-2012 to Feb-2021.

Timeline

SENIOR CLOUD ENIGNEER

NTTData Singapore
03.2022 - Current

SOFTWARE AND CLOUD ENGINEER

LTI (L&T Infotech) India
06.2021 - 03.2022

Cloud Engineer and Migration Specialist

IBM Pvt Ltd
01.2017 - 01.2021

EMC Storage Administrator

IBM Pvt Ltd
01.2014 - 01.2017

B.E (Bachelor of Engineering) in Information Technology -

Annamalai University

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