May 2021 – Jun 2022 · 1 yr 1 mo · Gurugram, Haryana, India · Remote

• Led 10+ projects, reporting directly to the CTO and overseeing all aspects of infrastructure, CI/CD, alerting, monitoring, security, and automation.
• Designed and managed the migration from hybrid cloud to AWS, implementing cost-optimisation strategies using Savings Plans, Spot Instances, and instance right-sizing, achieving substantial cost reductions in non-production environments.
• Modernised deployment strategy by creating a repeatable, automated deployment process for standalone applications, replacing manual steps with Ansible playbooks and rollback-capable shell scripts.
• Re-architected monolithic services into highly available, auto-scalable infrastructure using ALB, ASG, CloudFront CDN, and AWS WAF to improve reliability, latency, and scalability.
• Developed centralized Terraform modules and Ansible roles for provisioning and configuring AWS services enabling reusable, consistent IaC.
• Automated infrastructure housekeeping and optimisation tasks, such as:
• Detecting and alerting on unused EIPs and EBS volumes
• Retaining only the last 5 AMIs per ASG launch template
• Auto start/stop of instances based on scheduled tags
• Dynamic IP blocking via AWS WAF based on traffic thresholds
• Implemented suspicious activity detection and incident response automation using CloudTrail, EventBridge, SNS, and Lambda, covering IAM, EC2, GuardDuty, and SSO events.
• Built centralized monitoring and alerting systems using Telegraf, InfluxDB, Grafana, and CloudWatch, with real-time Slack alerts for production-critical metrics and anomaly detection.
• Setup and enforce AWS SSO for centralised login across multiple AWS accounts, defining granular permissions and access roles for DevOps, developers, and admins.
• Defined and enforced organisation-wide policies to ensure security and governance:
• Mandatory tagging, Region and instance-type restrictions, IAM admin role controls, AWS service usage restrictions.

Jul 2017 – Apr 2021 · 3 yrs 9 mos · On-site

• Developed reusable Ansible playbooks to automate repetitive operational tasks, reducing manual intervention and human error.
• Created and maintained centralised Terraform modules to standardise infrastructure provisioning across environments and teams.
• Designed and implemented a multi-region architecture for the Smart TV interface service to ensure global availability and failover capability.
• Enabled cost optimization by:
• Defining dynamic and scheduled scaling policies for Auto Scaling Groups (ASGs) based on usage trends and peak hours.
• Version management by using Launch template and removal of Launch configuration using automation.
• Automating detection of unused/underutilised resources via EventBridge rules and Lambda-driven reporting.
• Integrated AWS alerts with Slack to ensure real-time visibility and faster incident response for production-critical events.
• Implemented LDAP-based SSH authentication, granting role-based access control to servers and simplifying centralised login management.
• Set up and managed Jenkins master-slave architecture for distributed builds, handling parallel pipelines and diverse use cases.
• Installed and maintained JFrog Artifactory for artifact management and internal package distribution, improving build and deployment consistency.

Oct 2016 – Jun 2017 · 8 mos · On-site

• Managed infrastructure for 11+ services across multiple AWS regions, overseeing over 200 EC2 instances with high availability and scalability requirements.
• Designed and reviewed service architectures to ensure high availability, fault tolerance, and disaster recovery (DR) compliance.
• Implemented automation for cloud cost optimisation using Lambda and Python scripts:
• Identified and cleaned up unused resources (EBS volumes, Elastic IPs, AMIs)
• Enabled S3 Intelligent Tiering for automated storage cost reduction
• Generated under utilised resource reports for team action
• Performed detailed AWS billing analysis and recommended cost-saving strategies, including reserved instances and spot instance usage.
• Configured CloudWatch monitoring, custom metrics, and alerting pipelines using Lambda to proactively detect and respond to production issues.
• Migrated legacy server-based workloads to server less (AWS Lambda and Kubernetes architectures) for improved scalability and cost-efficiency.
• Acted as a core member of the RCA (Root Cause Analysis) team, investigating high-impact incidents and contributing to postmortems and incident prevention plans.
• Part of a centralised DevOps team responsible for:
• Enforcing organisation-wide security and compliance policies
• Managing IAM roles and cross-team access control strategies
• Set up secure SSH access across environments, enabling controlled server login using username/password and enforcing audit best practices.

Dec 2014 – Sep 2016 · 1 yr 9 mos · On-site

• Provisioned and managed AWS infrastructure for Smart TV applications using AWS Console, ensuring optimal setup for scalability and security.
• Executed ad hoc cloud tasks based on JIRA requests from development teams, including:
• AWS Lambda function creation and configuration, Security Group rule updates for fine-grained access control, IAM user and role creation with least-privilege policies, S3 bucket policy implementation for secure object storage access etc.
• Collaborated with multiple development teams to support and automate deployment workflows, reducing time-to-deploy and operational overhead.

Jul 2014 – Dec 2014 · 5 mos · India · On-site

• Assisted in understanding and implemention of technical features from the development team and communicated with QA to facilitate verification processes.
• Collaborated with cross-functional teams to integrate various TV modules, ensuring seamless feature functionality.
• Developed use case documentation relevant to specific features to support development and testing.
• Contributed to improving feature integration workflows and enhancing overall product quality.