Rajesh Kumar

Client - Avaya, Pune

• Troubleshooting application‑ related issues.
• OS hardening, security maintenance, and CVE management on RHEL servers.
• Debugging, testing, and developing new feature supportive scripts.
• Deploying and configuring applications on AWS, GCP, Azure, using terraform and ansible.
• Used tcpdump and Wireshark to investigate and narrow down possible issues.
• Implemented Disk Encryption management with LUKS2 in python3.
• Implement and investigate any issues with selinux, ACLs, nftables, firewalld.
• Work on new or existing vulnerabilities, create production friendly patches. Making sure backups are taken prior to making any changes in any files.
• Identified software issues and handled troubleshooting to resolve quickly.
• Proposed technical feasibility solutions for new system designs and suggested options for performance improvement of technical components.
• Handled scripting tasks for debugging and automation using Python and shell scripting
• Participated in code reviews to collaboratively develop, improve and add new features to the application .

• Automate software patching and configurations using Python, Shell scripting, and Ansible.
• Lead a team of 5 people and make sure we are on top of all the issues.
• Implementing CEC's and updating security patches as and when required.
• Performed root cause analysis and general troubleshooting.
• Provided L2/L3 support to premium customers in 24/7 uptime environment, often working double shifts to accommodate time zones.
• Delivered professional persona and attitude when dealing with unhappy or irate individuals.
• Inspected systems, diagnosed problems and developed optimal solutions.
• Updated hardware and software platforms by implementing automation and efficiency improvements.

• Worked flexible hours; night, weekend, and holiday shifts.
• Oversaw daily operations to ensure high levels of productivity.
• Deployed application on digital ocean using terraform, ansible and shell scripting.
• Containerized monolithic application using docker and deployed on GKE kubernetes architecture.
• Continued improvements in the IAAC and working as cloud support.