Summary
Overview
Work History
Education
Skills
Languages
Timeline
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Santosh Karki

OLD BRIDGE

Summary

Highly accomplished and results-driven DevOps Engineer, System Admin and Application Support with 12+ years of comprehensive experience in architecting, implementing, and managing robust and scalable infrastructure. Proven expertise in leveraging a wide range of cloud platforms (e.g.,ATT Cloud, Network Cloud, AWS, Azure), containerization technologies (Docker, Kubernetes), and automation tools (Azure Devops, Terraform, Ansible, Jenkins, Github, Splunk) to optimize software delivery pipelines and ensure system reliability and security. Performed routine maintenance, monitoring network performance, and resolving connectivity issues. Adopt at fostering collaboration between development and operations teams to drive efficiency and innovation.
Experienced in optimizing IT operations through automation and proactive maintenance. Strong background in managing diverse server environments, implementing security best practices, and streamlining administrative tasks using scripting and automation tools. Proven ability to enhance system reliability, improve efficiency, and provide robust technical support across various platforms.

Proven ability to install, configure, maintain and tune a variety of Middleware technologies including WebSphere, WebLogic, JBOSS, HAPROXY and Apache HTTP Server and databases like Mongodb, Mysql, Cassandra, Redis and Oracle. Deep understanding of performance tuning, security hardening, and troubleshooting complex middleware environments to ensure high availability and optimal performance. Proficient in scripting for automation of administrative tasks.

Overview

12
12
years of professional experience

Work History

DevOps System Admin | Application Support

AT&T
09.2020 - Current
  • Evaluated new and emerging hardware and software technologies for integration into cloud-based and on-premise systems. Assessed the impact of new technologies and solutions on mobility, wireline networks, and service delivery.
  • Worked on cloud infrastructure management, including migration from ATT Cloud to Network Cloud & Microsoft Azure. Familiar with the planning and implementation of network systems on cloud platforms and purpose-built environments, ensuring cost-effective and reliable solutions.
  • Creating Virtual Machine utilizing various OS images like Rocky linux, Centos & Ubuntu in Openstack.
  • System Admin duties such as managing users, regularly monitoring user level activity, checking system logs, file system, CPU usage and monitoring system performance in different OS like Red hat Linux, Ubuntu and Solaris. Upgrading the OS patches every Quarter.
  • Led the implementation of security best practices across the network and cloud environments, ensuring compliance with relevant industry standards. Managed OS patches, security updates, and configurations to maintain a robust and secure infrastructure.
  • Worked across multiple domain teams (Network, Development, Database, Operations) to define system-level design requirements, ensuring smooth deployment from development to production environments.
  • Monitor network performance, troubleshoot connectivity issues, and optimize network performance and Implement network security measures, including firewalls and VPNs.
  • Strongly working on creating, implementing, configuring and maintaining SSL certificates.
  • Creating ADO pipelines and deploy the release from ADO to various environment including lab, UAT, QA and PROD.
  • Writing Ansible Playbooks and roles to install packages, for security fixes, to deploy applications and manage the applications and configuration files across the various Environments.
  • Implemented CI/CD pipelines utilizing tools like Jenkins, Ansible, Maven, and scripting for end-to-end deployment of network solutions. Automated deployment and testing workflows, reducing manual intervention and increasing reliability.
  • Developed custom Bash, Python and Poweshell scripts to automate tasks and integrate systems, enhancing workflows.
  • Streamlined infrastructure management via automation using Ansible, Docker, Kubernetes, and Terraform.
  • Championed DevOps culture promoting collaboration among development, operations, and QA teams.
  • Installed, Configured and Manage databases Likes MongoDB, Redis and MySQL for web applications.
  • Setting up (Installing and configuring) Nodejs applications with redis, rabbitmq and pronghorn.
  • Provided ongoing production support, handling complex escalations and incidents in mission-critical network systems. Ensured swift resolution of network outages and application failures under pressure.
  • Perform regular network, databases and applications backups, disaster recovery, and other risk management practices.

Middleware Engineer

AT&T
05.2013 - 06.2020
  • Installed, configured and troubleshot JBOSS Enterprise Application Platform (EAP) 6.4/7, WebLogic Server 10.3.x, 12.1.3, 12.2.1, Tomcat 7.x/8.x/9.x and Apache 2.4.x, under Linux, AIX and Sun Solaris.
  • Upgrading the WebLogic from 12.2.1 to 12.2.3, Tomcat from 8 to 9, JBOSS 6.4 to 7.1.2.
  • Conducted performance tuning and troubleshooting for network hardware, virtual environments, and application servers (e.g., WebLogic, JBOSS, Tomcat). Led efforts to improve server performance through thread dump and core dump analysis.
  • Configuring and administering JDBC resources (DataSources, connection pools), JMS resources (Queue, Topic, connection factory) in WebLogic and JBoss.
  • Enhanced middleware infrastructure, boosting application performance significantly.
  • Installation and Configuration various opens source product like mongodb, kafka, zookeeper, Redis and node.js to setup notification platform.
  • Built and deployed Docker containers to break up applications into microservices, improving developer workflow, increasing scalability, and optimizing speed.
  • Creating, Installing and Maintaining of SSL Certificates deployed in the environment for secure communication and configuring 1-way and 2-way SSL.
  • Contributed to disaster recovery plans, ensuring business continuity during disruptions.
  • Optimized middleware configurations to increase scalability and minimize resource usage.
  • Implemented monitoring tools for proactive issue detection, enhancing system stability.
  • Maintaining the log rotation and clean up of all software applications to free up the spaces of filesystem.
  • Working on set up of new Mail Realy server to off load the current mail relay traffic.
  • Performed Root Cause Analysis and involved in 24/7 support for the Middleware Application Server support including analyzing the thread dumps of servers, troubleshooting and monitoring the logs.

Education

Bachelor of Arts - Educational Leadership And Management

John F. Kennedy University
Pleasant Hill, CA
07-2020

Diploma - Electrical, Electronics And Communications Engineering

Tribhuwan University
10-2006

Skills

    OS : Solaris, RedHat Linux, Debian, Windows, Unix, Linux Ubuntu, Alpine, Rocky Linux
    Scripting: Bash, Powershell WLST, Jython, Python, WLShell, Shell Script, Java Script, HTML, CSS
    Database: Oracle, DB2, MySql, SqlServer, MongoDB, REDIS, Cassandra
    Technologies: JMS, EJB, HTML, JDBC, XML, JSON, YAML
    Networking: TCP/IP, FTP, DNS, HTTP/s, NETCAT and TELNET
    Automation & CI/CD Tools: Azure DevOps, GIT, Jenkins, Docker, Kubernetes, Chef, Ansible, Maven,Splunk

    Network & Cloud Platforms: Microsoft Azure, ATT Cloud, Network Cloud, AWS, Docker, Kubernetes, VMware

    Monitoring & Logging: ELK Stack (Elasticsearch, Logstash, Kibana), Splunk, Prometheus, Grafana

    Security & Compliance: SSL Certificates, OS Patch Management, Vulnerability Assessments

    Collaboration & Documentation: Cross-Functional Team Collaboration, Test Plans, Network Design Documentation

    Middleware & Application Servers: HAPROXY, WebLogic Server, WebSphere Application Server, MQ Series, JBOSS Wildfly, Apache Tomcat, Nginx

Languages

English
Full Professional
Hindi
Full Professional
Spanish
Limited Working

Timeline

DevOps System Admin | Application Support

AT&T
09.2020 - Current

Middleware Engineer

AT&T
05.2013 - 06.2020

Bachelor of Arts - Educational Leadership And Management

John F. Kennedy University

Diploma - Electrical, Electronics And Communications Engineering

Tribhuwan University

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