May 2022 – Nov 2025 · 3 yrs 6 mos · Chennai

• Senior Site Reliability Engineer, I design, build, and maintain cloud infrastructure and automation frameworks to support secure, scalable, and efficient development. I lead the implementation of CI/CD pipelines using GitHub Actions, manage infrastructure as code with Terraform, and enforce compliance through OPA policy automation. I drive cloud security initiatives by integrating WIZ vulnerability insights and optimizing IAM policies for resource hardening.
• I build and manage observability stacks with Prometheus, Grafana, and CloudWatch to monitor deployments, pipelines, and workloads. With deep expertise in Kubernetes, Docker, and Helm, I enable automated, containerized deployments across development, staging, and production environments. Beyond technical delivery, I mentor junior engineers, contribute to internal DevOps playbooks, and collaborate across teams to strengthen DevOps maturity and reliability practices within the organization.

Jan 2019 – Apr 2022 · 3 yrs 3 mos · Kolkata, West Bengal, India · On-site

• I maintained and optimized network and cloud infrastructure in a regulated BFSI environment, ensuring compliance, high availability, and secure operations. Leveraging Terraform, I provisioned and managed cloud resources while maintaining infrastructure consistency and reliability.
• I implemented and supported a wide range of AWS services including EC2, VPC, IAM, Route 53, CloudWatch, ELB, NAT Gateways, Direct Connect, and Transit Gateways. My responsibilities also included handling Docker containerization, vulnerability management, patching, and upgrades to strengthen security posture.
• I contributed to Kubernetes troubleshooting, improving workload stability and performance, while setting up monitoring stacks with Prometheus and Grafana for proactive observability. Additionally, I provisioned Infoblox grid members and implemented DNSSEC, DHCP, and IPAM solutions to enhance network security and management.
• Working closely with cross-functional teams, I supported incident resolution, bandwidth monitoring, and change management across enterprise networks, ensuring uninterrupted business operations in a mission-critical financial environment.

Oct 2014 – Dec 2018 · 4 yrs 2 mos · Kolkata, West Bengal, India · On-site

• I supported global firewall operations across multiple data centers, managing configurations on Checkpoint, Cisco ASA, and FMC platforms. My role involved troubleshooting and diagnosing remote connectivity issues, performing incident root cause analysis, and ensuring minimal downtime for business-critical systems.
• I built and maintained DNS, NAT, VPN, VLAN, ACL, and load balancing configurations across geographically distributed environments. I also led security upgrades, bug analysis, and policy implementations across routers, firewalls, and DDI appliances to strengthen security posture and improve network resilience.
• Additionally, I implemented and managed Infoblox DNS, DHCP, and IPAM configurations, overseeing authoritative zones and IP allocations for enterprise networks. To ensure operational consistency, I maintained runbooks, operational handbooks, audit documentation, and knowledge bases that supported ongoing operations, audits, and compliance requirements.