Diwakar J.

Oracle Site Reliability Engineer 07/2024 - Present Performed end-to-end application patching and infrastructure deployment for enterprise platforms (OneSearch - AI services, AGCS – IAM, WLMS – WebLogic, CloudRuha- Reporting Tool) in OCI Cloud, using Oracle DevOps Portal & Shepherd for zero-downtime rollouts, automated health checks, and fast recovery across multi-region . Utilized WebInspect to perform network-aware security scans of Oracle web applications, identifying and mitigating SSL/DNS-related vulnerabilities in STAAS environments. Developed Python & Bash automation scripts to fetch instance data, logs, and network telemetry from multiple OCI regions and tenancies, correlating metrics (BGP/DNS/DHCP events) for troubleshooting and proactive incident resolution. Led OS upgrades, Kubernetes cluster upgrades, and OCI infrastructure patching, maintaining IPv6/DNS security compliance while ensuring stability through controlled rollouts. Implemented Terraform-driven network version upgrades (VPCs, load balancers, gateways), ensuring repeatability, version control, and faster provisioning cycles for cloud networking. Integrated AI/LLM-powered workflows (GPT-4.1) into network reliability processes to analyze logs, detect anomalies (e.g., packet drops, routing issues), and generate automated remediation actions. Fostered team-wide adoption of python automation, observability best practices (Prometheus, Grafana, ELK), and collaborative troubleshooting, improving MTTR across distributed systems. Infosys (LivePerson, BHP) Cloud Devops Engineer 05/2022 - 07/2024 Designed and maintained AWS/Azure cloud networks (VPCs, VNets, subnets, NAT, load balancers), optimizing resource utilization and ensuring scalable, fault-tolerant connectivity. Built CI/CD pipelines (GitLab, Jenkins) with integrated network checks (DNS resolution, SSL validation, firewall policies), accelerating deployment cycles and reducing outages. Ensured reliable application delivery by troubleshooting Kubernetes networking issues (Ingress/Egress, DNS service discovery) improving uptime for customer workloads. Automated infrastructure provisioning with Terraform, including network peering, security groups, and routing tables, reducing manual errors and deployment delays. Enhanced collaboration across teams by refining GitLab workflows with integrated network change validation scripts, boosting release quality. Performed vulnerability scanning (Prisma) on Azure network services to identify exposed endpoints and misconfiguration firewalls, proactively mitigating threats. Wrote Python & Shell automation to fetch logs, correlate network incidents (%BGP.neighbor IP, DNS failures), and generate dashboards for root cause analysis. Improved reliability by resolving high-traffic network bottlenecks, tuning (AWS- ELB)network load balancers and optimizing routing, which increased application availability by 15%. IBM (National Australian Bank) Cloud Devops Engineer 06/2019 - 04/2022 Deployed and troubleshot Apache Tomcat servers on Red Hat Linux for banking applications, tuning network configurations (DNS, TCP/IP, SSL) to handle high-volume requests efficiently. Reduced downtime in high-availability systems by diagnosing and fixing network-related issues (firewall rules, routing mismatches, DNS failures) across multi-tier infrastructures. Streamlined collaboration with Dev/QA teams by implementing GitLab CI/CD pipelines that included automated connectivity and DNS resolution checks, reducing release cycle times. Designed GitLab CI/CD pipelines for automated testing and deployment which reduced release cycles from weeks to days resulted in accelerated feature delivery and improved time-to-market at NAB Improved stability by troubleshooting Istio service mesh networking (mTLS, routing policies), integrating Prometheus alerts for latency and packet loss, reducing MTTD by 50%. Led successful project execution and improved team security by providing expert guidance on SDLC,Cloud Architecture, Migration, Terraform, and implementing Kubernetes RBAC for better security and access control at NAB