SAGAR GUNWAR
Highlands Ranch,CO
Summary
Accomplished Linux/DevOps Engineer, responsible for implementing application solutions both in the cloud as well as participating in technical research and development to enable continuing innovation within the DevOps space. Performing and implementing scalable, resilient, and secure solutions in the public cloud in Azure
Overview
9
9
years of professional experience
1
1
Certification
Work History
Linux/DevOps Engineer
Arrow Electronics
04.2021 - Current
- Assisted in deployment and maintenance of over 200 Linux servers, honing skills in server management and configuration
- Collaborated closely with DevOps to facilitate a smooth CI/CD process, resulting in zero downtime during code pushes using Kubernetes & Concourse
- Developed ansible playbooks to automate server related tasks & configurations
- Employed HAProxy server to steer load balancing for handling a constantly increasing user base & ensuring scalability & reliability
- Developed & maintained Azure cloud infrastructure, including virtual networks, storage accounts, and virtual machines
- Provisioned Azure Services using terraform
- Reduced system downtime for critical applications by implementing robust monitoring and alerting tools.
- Enhanced server performance by optimizing Linux system configurations and conducting regular maintenance
- Standardized server provisioning processes using configuration management tools like Terraform & Ansible
- Diagnosed and executed resolution for network and server issues
- Managed a Team of offshore and proactively worked on delivering the tasks
- Applied regular patches across the Linux ecosystem to mitigate vulnerabilities
- Conducted thorough investigations to identify the root causes and prevent recurrence
DevOps Engineer
Infosys
02.2019 - 03.2021
- Improved code deployment efficiency by automating processes with CI/CD pipelines using gitlab CI/CD resulted in 65% reduction in deployment time.
- Contributed to the creation of a DevOps culture within the organization, leading to increased agility and cross-functional collaboration.
- Automated manual tasks through scripting languages such as Python or Shell, boosting team productivity levels.
- Coordinated deployments of new software, feature updates and fixes.
- Implemented containerization using Docker and orchestrated deployments with Openshift.
- Developed and maintained infrastructure-as-code using Ansible, resulting in efficient server provisioning and configuration management.
Linux Systems Engineer
Infosys
03.2018 - 03.2019
- Improved system performance by optimizing Linux server configurations and implementing efficient monitoring tools.
- Proactively maintained and developed all Linux infrastructure technology to maintain a 24x7x365 uptime service
- Enabled continuous integration workflows for developers by setting up build pipelines based on Jenkins.
- Involved in setting up infrastructure for different application teams and Trouble shooting the network related issues like Firewall rules and network security group rules for network feasibility.
- Wrote Ansible Playbooks to automate server configurations
- Monitored the Application performance issues using the Sumologic for Logs and New Relic for High CPU usages and network sluggishness.
- Implemented HA Proxy over Azure Load Balancer with supports cookie persistence and sticky sessions.
- Supported the roll-out of system updates and patches, ensuring 99.9% system availability
Linux/VMware Administrator
Simna Solutions
02.2015 - 11.2017
- Installed, configured & maintained Red Hat Linux 5, 6 and 7 Environment
- Performed security updates and patches using the IBM's BigFix tool
- Spearheaded the installation of CA Control Minder which provides user account privileges and UNIX authentication
- Installing, Configuring VMware ESXi 5.5 Hosts and adding to the Clusters in vCenter
- Analyzed & troubleshooted the Linux Servers and network issues across the environments
- Created clones from existing VMs (both live and powered-off)
- Involved in creating vSwitches and created different ports groups for different purposes.
- Used VMware vMotion to eliminate application downtime from planned server maintenance by migrating running virtual machines between hosts.
- Migrated VMs across hosts within a HA cluster to perform maintenance tasks on ESXi hosts.
- Extensively worked on VMware Update Manger for Host upgrades and patches.
- Extensively used LVM to manage storage devices on Linux machines
- Wrote shell scripts to automate tasks like health checks and server info.
- Improved data center efficiency with comprehensive virtualization solutions using VMware technologies
- Articulated the installation of McAFee agents and antivirus across the Linux ecosystem.
- Resolved issues and escalated problems with knowledgeable support and quality service.
Education
Bachelor's Degree in Electronics & Communication Engineering (WES Evaluated) -
Skills
- Terraform, Ansible, AWX
- Linux System Administration
- New Relic, Grafana monitoring
- Incident Management
- Performance Tuning
- Bash Scripting
- HA Proxy, Azure Load Balancer, Nginx
- Azure Services
- Virtualization Technologies
- Docker and Kubernetes
- Azure DevOps,Jenkins, Gitlab CI/CD
- Jira, Confluence
- Git, Bitbucket
- DNS, FTP, HTTP, SSH, NFS
- MSSQL, MySQL, CosmosDB
- Java, Golang, Angular, NodeJs
Certification
- VMware VCP 5.5 and VCP 6.0 certified
- LPI Linux Essentials
- AWS Solutions Architect
Timeline
Linux/DevOps Engineer
Arrow Electronics
04.2021 - Current
DevOps Engineer
Infosys
02.2019 - 03.2021
Linux Systems Engineer
Infosys
03.2018 - 03.2019
Linux/VMware Administrator
Simna Solutions
02.2015 - 11.2017
Bachelor's Degree in Electronics & Communication Engineering (WES Evaluated) -
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