Mohanraj R

Key Responsibilities:

• Designed secure, scalable AWS & Azure architectures for enterprise workloads.
• Led cloud migrations (on-prem & cloud-to-cloud) with minimal downtime.
• Developed IaC using Terraform, CloudFormation, and Azure ARM/Bicep for automated deployments.
• Implemented cloud security best practices: IAM/AAD, encryption, WAF, GuardDuty/Defender, monitoring.
• Architected hybrid connectivity via AWS VPN/Direct Connect/Transit Gateway and Azure VPN/ExpressRoute.
• Defined DR & HA strategies using multi-AZ and multi-region patterns.
• Optimized cloud costs through right-sizing, usage analysis, and lifecycle policies.
• Managed cloud operations, troubleshooting, performance tuning, and infrastructure hardening.
• Maintained architecture documentation, diagrams, and best-practice guides.

Key Responsibilities:

• Led comprehensive infrastructure assessments and delivered cost/utilization insights that improved resource planning and operational efficiency.
• Architected and implemented scalable cloud environments, including workload design, migrations, and remote infrastructure operations.
• Designed and enforced cloud governance and security, covering IAM, backup strategies, patching, monitoring, and compliance controls.
• Managed AWS Organizations and multi-account structures, optimizing VPC/network design, compute provisioning, and hub-and-spoke architectures.
• Executed multiple on-premises to cloud migrations, tenant/subscription setups, and cross-environment network configurations.
• Delivered significant cost optimization through right-sizing, storage lifecycle policies, and workload performance tuning.
• Oversaw O365 configuration, resource migration, role assignments, and documentation, ensuring smooth cross-team operations and improved service reliability.

• Maintaining EC2 services like launching instances, attaching/increasing volumes, configuring security group, monitoring EC2 instance metrics like CPU Utilization.
• Hands on experience on AWS Networking like VPC, Subnets, and Route tables, NAT, IGW, VPN and VPC Peering, Transit Gateway.
• Setup and maintain VPC peering with multiple AWS accounts.
• Designing and Deploying Highly scalable infrastructure using ELB and Autoscaling services.
• Used security groups, network ACL’s, internet gateways, nat gateway, route tables and to ensure a secure zone for organization in AWS public cloud.
• Hands-on experience in EC2, ELB, Auto-Scaling, S3, Glacier, DynamoDB, Route53, CloudWatch, IAM, Cloud Formation, VPC, API Gateway, CloudTrail, AWS Config and SNS etc.
• Managing, Training and Supporting team members for multiple Project activities and also cloud operational activities.
• Managed and installed patches and software packages in AIX and Linux servers.
• Have Hand on experience in Systems Administration on AIX and Linux OS.
• LVM configuration and management in AIX/Linux operating system.

• Installed, configured, and administered AIX and Linux servers, including patching (ML/TL), fixes, and APAR updates.
• Managed user administration, file systems, security, and troubleshooting based on system error reports.
• Performed LVM/RAID configuration, disk space management, and SAN disk mapping to VIO clients.
• Created and managed VIO servers and LPARs using HMC and web consoles.
• Maintained RPM repositories and handled package management in Red Hat environments.