Rohit Mahimkar

Tech Stack: AWS, Terraform, Ansible, Datadog, Jenkins, Cassandra, and Shell Scripting.

• Reduced AWS infrastructure costs by 15% using EC2 auto-scaling, rightsizing, and Datadog-driven resource alerts.
• Automated off-hour shutdown/startup of non-prod EC2 instances using Ansible and CloudWatch Events, saving 10% compute costs.
• Developed Ansible automation to shut down non-prod services during off hours, saving 10% on compute costs.
• Implemented Squid proxy to control web access, improve caching, and enhance network security.
• Led a successful Cassandra upgrade (v3.11 to v4.1) using Blue-Green deployment with approximately zero downtime.
• Integrated Datadog agents and dashboards for Kubernetes and EC2 performance metrics.
• Improved CI/CD pipeline stability in Jenkins by proactively fixing 20% of recurring job failures.
• Designing an automated Linux patching solution using AWS Systems Manager Maintenance Windows. Leveraging tag-based instance grouping to schedule compliant, disruption-free updates during non-business hours.
• Currently, I am experimenting with Helm for templating and managing Kubernetes deployments, focusing on customizing Helm charts and the release lifecycle in development environments.

• Monitored system performance and reliability across multiple services and applications.
• Automated deployment processes to enhance operational efficiency and reduce manual errors.
• Collaborated with development teams to implement best practices for incident management.
• Conducted root cause analysis to resolve service outages and improve system resilience.
• Developed monitoring tools to track application health and alert on anomalies.
• Implemented backup strategies to ensure data integrity and availability during failures.
• Participated in on-call rotation to provide support for critical production issues.
• Monitored systems performance using various metrics such as latency, throughput, availability.

Tech Stack: Docker, Jenkins, Nginx, JMeter, Shell Scripting, ElasticSearch, OracleDB.

• Containerized legacy application stack using Docker Compose, cutting deployment time by 40%.
• Managed supervision of 100+ QPM in virtual server infrastructure, facilitated by Nginx.
• Designed a load testing strategy using JMeter to validate production readiness.
• Supported release management in coordination with development teams.
• Collaborated with dev teams to align infrastructure needs with release schedules.
• Performed backup automation and routine disaster recovery drills.

Tech Stack: AWS, Nagios, JMeter, Redis, HAProxy, Nginx.

• Implemented Nagios for infrastructure monitoring across memory, CPU, and disk usage.
• Executed load balancing and reverse proxy systems.
• Conducted performance and load testing to validate a high-availability setup.
• Managed cloud backups and scaling strategies for AWS-hosted environments.
• Monitored system performance and resolved technical issues promptly.

• Assisted senior engineers in monitoring automation and infrastructure tasks.
• Explored new technologies and approaches to streamline processes.
• Analysed problems and worked with teams. To develop solutions.