Muthuvel Periyasamy

I defined the solution architecture for migrating many Java, JEE, and WebLogic in-house web and batch applications to public clouds like AWS, Azure, and OCI. I also automated VMs, subnets, NLB, and RDS creation using Terraform infrastructure as code.

A Java, Jakarta EE, JSP, Servlet, EJB, and Oracle-based telecom CRM application with many modules like admin, customer care, complaint management systems, sales, payment, and workflow. I worked as a full-stack engineer on this project, optimizing its runtime performance and reducing legacy dependencies, build time, and response time. I also improved the application's user experience significantly.

I designed the solution architecture for migrating in-house servers, networks, and databases to AWS and Azure clouds, I used Blob storage to store application files, photos, and machine images, and I created public and private subnets to host applications, databases, IAM roles, security, monitoring, and billing controls.

An automated telecom account lifecycle management application developed in Java. This application was primarily used for telecom account inquiry, service cessation, and service re-activation purposes by third-party reseller applications in an automated mode.

I developed, deployed, and maintained batch jobs for calculating, billing, and adjusting data plan minutes of the customers. I added the calculated minutes to customer accounts in telecom mobile intelligent networks and developed scripts for starting, stopping, and monitoring the batch jobs.

This project aimed to process customer utility bill complaints and take remedial actions automatically and it reads normal and scanned utility bills using Azure Blob and Azure App Service. Utility bill details are stored in MS SQL's server database and compared with existing details. The billing amount will be adjusted without human intervention if the complaint is valid. if the complaint is not valid, a rejection email will be sent to the customer. I worked as an architect and implementor on this project.

I designed and developed telecom gateway management systems to allow operation teams to monitor gateway statuses from the web and start, stop, and get log details of any gateway. Before this project, they had to log into each gateway machine to check statuses and see logs in case of gateway problems; now, these are solved online. These new systems saved time, effort, and costs.

Developed HLR, 3G, 4G, 5G, IN, vSBC, MMSC, Diameter, Radius, and VoLTE telecom activation gateway to activate mobile, internet, and fixed-line services. Worked on Oracle ASAP and Ericsson EDA for Telecom OSS service fulfillment projects.

Developed a Python Flask-based website that processes and summarizes multiple PDFs at a time. It trains these PDF data into ChatGPT and allows users to ask questions based on the newly trained data.

I applied critical patches and updates using Ansible automation in AWS and Azure VMs. I also automated software installation and configuration using Ansible playbooks and periodic system maintenance.

I migrated multiple project codes written in Java, Python, Node.js, Spring Boot, and React from GitLab to GitHub Enterprise. I built pipelines, groups, users, and roles in GitHub. Additionally, I converted GitLab pipelines into equivalent GitHub workflows and worked extensively with GitLab and GitHub runners and actions.

This project monitors in-house servers, Cloud Servers, URLs, and Kubernetes clusters using Prometheus and Grafana. Alertmanager sends alerts to the operation teams when a URL/Server is down. This was a handy tool for our operation for Monitoring Critical servers, REST endpoints, and URLs.

Monitor Azure VM logs and events using Splunk. Monitor application logs, stack traces, and performance bottlenecks using Application Agents and Code instruments in Web and batch applications developed in Java, Python, and other languages.