Mohankumar Sekar
Senior Site Reliability Engineer
Krishnagiri,TN
Work Preference
Summary
Dynamic and results-driven professional with a strong passion for developing secure, automated, and reliable cloud-native infrastructure. Over 5 years of hands-on experience delivering scalable and cost-effective solutions utilizing AWS, Kubernetes, and Terraform. Expertise in cross-team collaboration that drives cost reductions and enhances customer experiences through efficient and stable deployments. Solid background in maintaining and enhancing system reliability, coupled with a proven track record of implementing automated solutions to streamline processes and optimize infrastructure performance.
Overview
5
5
years of professional experience
1
1
Certification
Work History
Senior Site Reliability Engineer
Medallia India Pvt Ltd
04.2024 - 09.2024
- Managed containerized applications with Docker and Kubernetes, ensuring 99.9% uptime across production workloads.
- Designed and maintained CI/CD pipelines to automate build, test, and deployment processes, cutting release failures by 30%.
- Implemented infrastructure as code (Terraform) to provision AWS resources, reducing manual intervention and enabling consistent environments across dev, staging, and prod.
- Built monitoring dashboards with Prometheus and Grafana, setting up proactive alerts that reduced mean time to resolution by 25%.
- Conducted root cause analysis for major incidents, documenting fixes and preventing recurrence through automation or improved observability.
- Migrated legacy on-prem services to AWS with zero data loss and minimal downtime, improving scalability and disaster recovery.
- Collaborated closely with development teams, embedding DevOps best practices and ensuring smooth handoff of applications from dev to production.
- Developed custom scripts/tools as needed to automate routine tasks, increasing overall team productivity and efficiency.
- Evaluated new technologies and tools to enhance overall system performance, stability, and security.
Cloud Engineer
Codincity Digital Technologies Private Limited
01.2022 - 11.2023
- Reduced server downtime by proactively monitoring cloud resources and addressing potential issues before they escalated.
- Used metrics to monitor application and infrastructure performance.
- Participated in system development life cycle from requirements analysis through system implementation.
- Designed and implemented system security and data assurance.
- Provided 2nd and 3rd level technical support and troubleshooting to internal and external clients.
- Ensured high availability and scalability of cloud services, leading complex migrations to cloud environments.
- Achieved cost savings in cloud operations, negotiating favorable terms with cloud service providers.
- Optimized cloud resource utilization, conducting thorough audits and implementing recommendations.
- Performed cloud cost optimization in AWS by rightsizing EC2 instances and implementing auto-scaling groups, saving the company ~20% monthly.
DevOps Engineer
Photon
06.2019 - 12.2021
- Improved code deployment efficiency by automating processes with CI/CD pipelines.
- Maintained version control systems like Git or SVN for seamless collaboration among developers and engineers during project lifecycles.
- Cut recovery time by 35% through better alerts and automated fixes, boosting service reliability.
- Designed and implemented containerization strategies using Docker and Kubernetes, improving resource utilization and management.
- Monitored automated build and continuous software integration process to drive build/release failure resolution.
- Automated manual tasks through scripting languages such as Python or Shell, boosting team productivity levels.
- Provided 24/7 on-call support for critical systems, ensuring high availability and rapid issue resolution.
Education
Bachelor of Engineering - Computer Science And Engineering
RMD Engineering College
Tiruvallur, India 04.2001 -
Skills
Cost control
Continuous deployment
Linux administration
Continuous integration
Containerization technologies
Disaster recovery
Infrastructure automation
Load balancing
Configuration management
Microservices architecture
Scripting languages
ITIL framework
Problem-solving abilities
Capacity planning
System monitoring
Incident management
Certification
AWS Certified DevOps Engineer — Professional (Valid: 2022-12 – 2025-12)
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Languages
English
Bilingual or Proficient (C2)
Tamil
Bilingual or Proficient (C2)
Timeline
Senior Site Reliability Engineer
Medallia India Pvt Ltd
04.2024 - 09.2024
Cloud Engineer
Codincity Digital Technologies Private Limited
01.2022 - 11.2023
DevOps Engineer
Photon
06.2019 - 12.2021
Bachelor of Engineering - Computer Science And Engineering
RMD Engineering College
04.2001 -