Velmani Thangaraj

SRE (Site Reliability Engineer)

Bengaluru, Karnataka, India13 yrs 2 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in Linux System Administration and Cloud Architecture.
Led significant cost-saving initiatives reducing operational costs by 40%.
Designed tools that improved operational efficiency by 90%.

Stackforce AI infers this person is a Cloud Infrastructure and DevOps expert in the Fintech and SaaS industries.

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Skills

Core Skills

Linux System AdministrationCloud ArchitectureDevops EngineeringCloud Infrastructure

Other Skills

Active-active application architectureAnsibleApacheAutomationBashCapacity PlanningCentOSChefConfiguration managementContinuous IntegrationDHCPDNSDockerElastic StackExpect Script

About

Dynamic and self-motivated. Aspiring for a bright and challenging career in the field of Linux System which would enable me to upgrade myself with emerging trends and technologies.System administrator and Architect with extensive experience in high performance Cloud apps build and deployment in different cloud platforms. Specialising in Linux System Administration, OpenStack,AWS,VMWare, Xen and etc

Experience

13 yrs 2 mos

Total Experience

3 yrs 3 mos

Average Tenure

9 yrs 6 mos

Current Experience

Zeta

3 roles

Principal SRE- II

Promoted

Jul 2025 – Present · 11 mos

Principal SRE- I

Promoted

Jul 2021 – Aug 2025 · 4 yrs 1 mo

Led SREs in launching PayZapp and Pixel products, enabling seamless UPI, prepaid, and credit payments, along with secure transactions
Spearheaded cost-saving initiatives and reduced operational costs by 40% by Optimize resource allocation and various other activities
Architected and designed an internal SSL certification rotation tool from inception to implementation, reducing the operational workload associated with managing SSL certificates by 90%
Managed end-to-end incident resolution, ensuring rapid detection, effective response coordination, thorough root cause analysis, and continuous improvement
Enhanced HPA configuration to manage cloudburst scenarios which successfully handled the load during the IPL event
Expert in JVM performance analysis, adept at solving memory, CPU, and other JVM-related issues
Led initiatives enhancing team productivity and knowledge sharing, training over 20 junior members
Engaged in auditing processes

Root CauseReliabilityOptimizationCapacity PlanningJVM performance analysisIncident resolution+4

Senior DevOps Engineer

Nov 2016 – Jun 2021 · 4 yrs 7 mos

Setup and DR site and design and implement active-active application architecture to maintain 100% uptime of critical services.
Participating in the on-call rotation to restore the services as quickly as possible to maintain the SLA.
Designed and migrated the configuration management system from Sync-tool to Ansible.
Designed a shell script to automate the deployment process where deployment depends on a static inventory file.
Planning and Migrated all production applications from ap-southeast to ap-south with minimal downtime we could offer.
Working on migrating applications into Kubernetes(EKS).
Migrated all the self-managed AWS resources to terraform.
Administring OpenBSD firewall for packets filtering.
Administring various physical servers and applications hosted in it located in various Data-Center.
Interacting with various Banks, Partners, Financial service provider, and Card Networks( Mastercard & NPCI ) to establish network connectivity with Zeta and Troubleshoot and fix connectivity issues when needed.
Perform DR drill activities once in a while.
Created a chroot-ed environment for various applications for process isolation.
Setup and manage Confluence Server along with content migration from UAT environment to Production environment.
Setup and manage the bucardo server ( a multi-master replication program ).
Setting up and managing the Redis cluster with sentinel including configuration tuning for auto-failover and better performance.
Good understanding of OMS architecture.
Administring Elastic Stack along with other monitoring & alerting systems like Zabbix, Grafana.
Automating various tasks using shell script.

Active-active application architectureConfiguration managementKubernetesTerraformOpenBSD firewall administrationElastic Stack+3

Intel security

Application Engineer

Sep 2015 – Nov 2016 · 1 yr 2 mos · Bangalore

Administer large scale server environments consisting of over 2000+ server (CentOS).
Perform complex technical work requiring experience in the application of standard techniques and procedures in carrying out the tasks.
Respond to production alerts 24/7 involving multiple software system components, using background, experience and establish procedures to resolve issues and restore series as quickly as possible.
Understanding the task objective, develop scripts (Shell) and configures tool sets and third party applications to automate support tasks.
Assist in training more junior members of team, typically take the lead role in one or more complex initiatives.
Work and coordinate with Storage, network, Datacenter regarding any of the on demand tickets and request.
Installation of patches and packages, Kernel upgrades, OS upgrades, Application upgrade, OS migrations to CentOS.
Nagios Configuring and writing monitoring plugins
As part of Global SAAS DevOps team to maintain the infrastructure and provide support where the various components of application installed.
Managing multiple datacenter and Linux Infrastructure support

Server administrationMonitoringAutomationPatch managementScriptingLinux System Administration+1

Itapp software pvt ltd

DevOps Engineer

Feb 2014 – Sep 2015 · 1 yr 7 mos · Bengaluru Area, India

>VMware vsphere, Citrix Xen server, VMware vcenter server and Openstack Installation, configuration and Administration.
>Sharing Disk for multiple Xen server using NFS technologies from Linux machine.
>Cloning VM on Vmware ESXi host without Vmware Vcenter server using Shell script.
>Creating templates from VM's, deploy VM's from templates and allocate resources.
>Uploading image and spin a VM and creating snapshot out of it in Openstack.
>Setting up and managing Networks and Access rules in Openstack.
>Creating duplicate VMs using Cloning feature.
>Migrating VM from one Xen server to another within the Pool.
>Working knowledge on virtaulization technologies like Vmware Workstating, Oracle Virtual Box and Docker.
>Working knowledge on setting up / maintaining systems and networking devices.
>Good understanding of Continous Integration using Jenkins
>Experienced with source control management like SVN.
>Having Knowledge on provisioning systems like Chef and ansible.
>Expertise in setup, configuration, upgrade, maintenance, and troubleshooting of servers running on different OS platforms like Linux (Various Flavors especially RedHat, CentOS, Ubuntu,)
>Sound knowledge on RAID,LVM and SWAP
>Good understanding of Server's like DHCP,DNS,FTP,HTTP,SQUID,NFS,NIS and VNC
>Perform software installation on Linix Operating Systems via RPM, YUM and APT-GET, DBKG
>Good knowledge on writing shell script.
>Automating Process using cronjob and Shell script.
>Load and Performance testing using Shell Script + REST API's.

VirtualizationNetworkingContinuous IntegrationProvisioning systemsDevOps EngineeringCloud Infrastructure

Debuggers

Linux System Administrator

Feb 2013 – Jan 2014 · 11 mos · Erode Area, India

I was working as Linux System Administrator where i maintain the desktops and laptops and network communication.I am good at user management and configuring server like NFS,SAMBA,DNS,FTP,HTTP,PXEBoot and etc..

User managementNetwork communicationServer configurationLinux System Administration