Summary
Overview
Work History
Education
Skills
Accomplishments
Disclaimer
Timeline
Generic

Sireesha Parasa

Narasapuram

Summary

Middleware Administrator with 4+ years of experience supporting enterprise applications on AWS and Azure, specializing in middleware platforms, cloud infrastructure platforms, security, and operations across Linux and Windows platforms. Skilled in building and supporting web/application servers, troubleshooting error logs, and implementing secure configurations, SSL certificate lifecycle management, monitoring using Dynatrace and New Relic, and handling P1/P2 production incidents with SLA compliance. Strong experience in troubleshooting and ensuring high availability across DEV, UAT, and PROD environments.

Overview

5
5
years of professional experience

Work History

Systems Engineer

Tata Consultancy Services
01.2021 - Current
  • Working on various tech stacks like web – Apache and IIS, Application servers – Apache tomcat, wildfly, WebLogic
  • Built, installed, and configured web and application servers in on-prem and cloud environments (AWS & Azure) in compliance with architecture and security standards.
  • Installed and configured Oracle WebLogic including domain creation, Admin & Managed servers setup.
  • Installed, configured, and upgraded Apache Tomcat and WildFly servers.
  • Installed and configured SAML and OIDC protocols to enhance application security and user authentication.
  • Configured and managed AWS Application Load Balancer (ALB) with EC2 target groups, enhancing application routing and ensuring high availability through DNS modifications.
  • Performed IIS configuration, SSL certificate upgrades, bindings, and Java patching
  • Managed code deployments, configuration changes, and middleware upgrades/migrations across multiple environments.
  • Executed quarterly Java and WebLogic PSU/CPU patching with thorough pre/post validation checks to ensure system reliability and compliance.
  • Created incidents, request items, and change requests in ServiceNow.
  • Performed controlled start/stop of services during planned maintenance windows
  • Configured and maintained SSL/TLS certificates at AWS ALB, web server, and application server levels; handled certificate renewals and Java keystore imports.
  • Conducted log analysis and root-cause troubleshooting using application logs, server logs, and AWS CloudWatch to swiftly identify and resolve issues.
  • Performed weekly maintenance activities, including patching, log purging, health checks, and server validations for critical application
  • Handled P1/P2 critical production incidents via ServiceNow ensuring SLA adherence and timely resolution.
  • Managed SSL certificate lifecycle including CSR generation, installation, renewal, and expiry tracking.
  • Installed and patched CA certificates across middleware environments to maintain secure communication.
  • Troubleshot SSL handshake failures, certificate chain issues, and keystore/truststore mismatches.
  • Created and maintained auto start-up scripts for Tomcat and WildFly services.
  • Performed daily health checks including disk utilization, CPU usage, memory consumption, and service validation.
  • Performed log rotation, cleanup, and archival activities to prevent disk space issues.
  • Verified Java compatibility before patching and upgrade activities.
  • Restarted and validated Windows & Linux services during maintenance activities.
  • Hypercare monitoring of all the critical servers during the quarterly and yearend freeze period.
  • Performance / Vulnerability / Web security management.
  • Renewing the SSL certificates which are going to expire in near future and importing it on web server level, app server level or in ALB level where ever it is installed. Importing it to cacerts in java keystore level. Also importing the root, intermediate and server CA certificates in the web servers for private certificates.
  • Added, modified, or deleted DNS names for servers based on organizational requirements to maintain proper network configuration.
  • Worked in AWS tool for importing certificates in ALB level and creating the target groups from ALB to the EC2 instances (web servers) with suitable protocols.
  • Implemented monitoring and alerting for CPU, memory, disk, and application availability using CloudWatch Alarms and Azure Alerts.
  • Worked with AWS S3 and Azure Storage Accounts for application artifacts, backups, and logs, applying encryption, lifecycle policies, and access controls.
  • Supported DMZ web servers via secure VDI access, ensuring adherence to web and network security best practices.
  • Conducted hypercare monitoring during quarterly and year-end freeze periods to ensure zero downtime.
  • Monitored performance, vulnerability, and web security issues, coordinating remediation with infrastructure and security teams.
  • Actively used ServiceNow for incident, request, change, and problem management, maintaining 100% SLA compliance and generating daily, weekly, and monthly operational reports.
  • Collaborated with DevOps and infrastructure teams during deployments, releases, and production incidents.

Education

Master of Computer Applications -

SRI YN College
08-2020

Bachelor's Degree - MPCS

SRI YN College
03-2017

Intermediate - MPC

Aditya Junior College
04-2014

SSC -

Bhashyam Public School
Narsapur
03-2012

Skills

  • Web Servers: Apache, IIS
  • Application Servers: Apache Tomcat, JBoss WildFly, WebLogic, IIS
  • Administration: Linux & Windows OS, Java patching
  • Cloud: AWS (ALB, EC2, SSL certificate management)
  • Tools: ServiceNow (INC, RITM, CRs, reporting)
  • Monitoring Tools: Dynatrace, New Relic
  • Security: SSL/TLS configuration, Vulnerability & Web Security Management

Accomplishments

  • Improved application availability by 99.9% by proactively monitoring AWS CloudWatch and Azure Monitor alerts and resolving performance bottlenecks before SLA impact.
  • Successfully supported 20+ enterprise applications across AWS and Azure environments using Apache, Nginx, IIS, Tomcat, WebLogic, WildFly
  • Reduced incident resolution time by ~30% through effective log analysis, root cause identification, and proactive maintenance activities.
  • Prevented production outages during quarterly and year-end freeze periods through continuous hypercare monitoring and rapid incident response.
  • Eliminated security risks from SSL certificate expirations by implementing timely renewals and keystore management across load balancers and application servers.

Disclaimer

I hereby declare that the above-mentioned information is correct to the best of my knowledge.

Place: Narsapur                                                                                                                    Sireesha Parasa

Timeline

Systems Engineer

Tata Consultancy Services
01.2021 - Current

Master of Computer Applications -

SRI YN College

Bachelor's Degree - MPCS

SRI YN College

Intermediate - MPC

Aditya Junior College

SSC -

Bhashyam Public School
Sireesha Parasa