Nageswar Polina
Summary
Over Around 13.5 Years of experience in UNIX System Administration (RHEL, Solaris & AIX), Problem Determination and solving and experience on GPFS, VCS cluster, PowerHA System Mirror and VIO.
Around 4 years of experience in IT industry with major focus on Observability [ELK stack, Grafana and AppDynamics], Configuration Management, Build & Release Management, Infrastructure Management and CI/CD automation. Worked as AWS and DevOps engineer in various dynamic environments.
Hands on experience in Observability [ELK stack (Kibana, Elasticsearch and Logstash, Grafana and AppDynamics], Amazon Web Services like EC2, S3, VPC, Kubernetes, Docker, Azure, Google Cloud, AWS Kubernetes Services [EKS], Google Kubernetes Engine, Nginx, CICD tools, Jenkins, Nexus, SonarQube and knowledge on Open Shift
Overview
14
14
years of professional experience
1
1
Certification
Work History
Site Reliability Engineer – ELK Stack, Cloud, DevOps & UNIX Administration
Percept Solutions Pte. Ltd
01.2023 - Current
Site Reliability Engineer – Cloud, DevOps & UNIX Administration
Helius Technologies Pte Ltd
01.2021 - 12.2022
Senior Engineer – UNIX, Cloud and DevOps Administration
DBS Bank Ltd
09.2016 - 01.2021
- Company Overview: DBS Bank (Singapore)
- DBS Bank (Singapore)
Senior Consultant – PSeries Migrations & AIX
MindCraft Singapore Pte. Ltd
09.2015 - 06.2016
Technical Specialist – UNIX Server Management
Wipro InfoTech Limited
04.2011 - 09.2015
Education
Master of Computer Applications -
Pondicherry University
01.2010
Skills
- Linux
- IBM AIX
- Solaris
- Git
- GitHub
- Azure DevOps
- Maven
- NodeJS
- GoLang
- Python
- Jenkins
- Azure Pipelines
- Ansible
- Puppet
- ELK
- Grafana
- Prometheus
- AWS
- Microsoft Skytap
- Azure
- GCP
- SHELL BASH
- Terraform
- Dockerfile
- Docker
- Kubernetes
Certification
- Certified Kubernetes Administrator (CKA)
- AWS Certified Solution Architect - Associate
- Certified Kubernetes Application Developer (CKAD)
- Microsoft Certified: Microsoft Azure Administrator - Associate
- AZ-400 - Designing and Implementing Microsoft DevOps Solutions
- RED HAT Certified System Administrator 8
- Certified on AIX 7 Administration
- Certified on High Availability for AIX - Technical Support and Administration - v2
- Certified on Virtualization Technical Support for AIX and Linux
- IBM Certified System Administrator - AIX 6.1 Administration
Professionalsynopsis - Rolesandresponsibilities
- Designed and managed Elasticsearch solutions to index and search large-scale datasets, improving data retrieval speeds and search accuracy.
- Implemented Kibana dashboards for data visualization and monitoring, enhancing data insights and operational transparency.
- Conducted performance tuning and capacity planning to ensure system reliability and scalability.
- Built and maintained Elasticsearch indices for structured and unstructured data, enabling advanced search and analytics capabilities.
- Developed custom reports and dashboards using Kibana to present data trends and key metrics to stakeholders.
- Configured and managed Elasticsearch indices for diverse datasets, including log data, application metrics, and business analytics.
- Provided technical support and troubleshooting for Elasticsearch-related issues, resolving complex problems and minimizing downtime.
- Collaborated with development and operations teams to integrate ELK stack components into CI/CD pipelines and cloud infrastructure, ensuring seamless deployments and system reliability.
- Performed ELK stack upgrade from 8.6.0 and 8.3.3 to 8.12.2.
- Performed ELK stack upgrade from 7.17.7 and 8.3.3 to 8.12.2.
- Exposure in troubleshooting and handling various issues in ELK stack components.
- Deep insights into Elastic clusters, Elasticsearch, ELK stack, Kibana, Logstash, REST API integration, workload onboarding, and APM deployment.
- Use modern data analytics and visualization tools including Elasticsearch, Kibana, Grafana application dashboards.
- Responsible for designing and deploying new ELK clusters [Elasticsearch, Logstash, Kibana, Beats and Elastic Agent].
- Working on keystore configurations for Elasticsearch, Kibana and Logstash.
- Working with pipelines and logstash grok configurations and trim the data for better log patterns to ease kibana search queries.
- Configured watcher alerts to address data streaming issues and mail configuration.
- Configured watcher to monitor the snapshot status with mail configuration and retrigger upon snapshot failure.
- Experience in Filebeat agent onboarding and working with elastic agent configurations.
- Working with ILM policies planning and configurations.
- Implemented monitoring and alerting solutions using ELK stack, ensuring high system availability and performance.
- Designed and implemented CI/CD pipelines using Jenkins for ELK stack upgrades.
- Working on Grafana dashboard configuration and ELK cert renewals.
- Working on Configuration Management, Build & Release Management, Infrastructure Management and CI/CD automation.
- Used Azure DevOps extensively for the project and have good hands-on Azure Pipelines & Releases.
- Good understanding of Kubernetes in managing Docker containers.
- Worked on Microservices architecture which includes diversified tech stack involved in them.
- Good hands on AWS services like EC2, EKS, S3, Secret Manager, ACM, VPC, RDS, ElasticCache, DocumentDB, DynamoDB.
- Strong experience with monitoring tools such as Prometheus & Grafana.
- Experience in Log aggregation with ELK.
- Experience working with version control systems like GIT and used Source code management tools GitHub Enterprise & Azure Repos.
- Implemented a CI/CD pipeline involving GitHub, Jenkins, Ansible, and Terraform for complete automation from commit to deployment for Mutable and Immutable Infrastructures.
- Good hands-on Jenkins pipelines with shared libraries.
- Installed and Configured Nexus & Azure Artifacts Repositories.
- Implemented SAST practices using SonarQube.
- Installed and configured Ansible Tower and created Ansible Playbooks for deployments and patch management.
- Extensively used configuration management tool with Ansible Roles.
- Hands-on experience using Maven, NodeJS, Python & GoLang as the build tool for building of deployable artifacts from source code.
- Experience in database design, replication, and administration MySQL & MongoDB.
- Have knowledge on working message queue services like RabbitMQ Service.
- Worked on Centralized Caching service like Redis.
- Experience in multi platforms like UNIX, Ubuntu, and RHEL production, test, and development servers.
- Good understanding on API’s and related automation.
- Good analytical and communication skills and ability to work independently with minimal supervision and perform as part of a team.
- Very good understanding of Micro services architecture, adapting Industry best practices for Microservices while we break down existing apps into micro services.
- Performing backups of etcd database backup periodically and perform restore whenever needed.
- Provisioning, configuring, and administering Prometheus and Grafana to monitor Kubernetes clusters and applications.
- Good understanding of Packaging the application using Helm/Tiller charts and deploying onto Kubernetes clusters.
- Experience with Amazon Cloud (AWS) including EC2, VPC, IAM, S3, RDS, Route 53, SNS, Terraform for cloud Automation.
- Experienced with Docker container service and Docker applications by creating Docker images from Docker file and good knowledge on Orchestration tools like Kubernetes.
- Experience in using tools like Terraform, containers, Docker, Scripting languages like Bash Script, Shell Script and knowledge on windows batch programming.
- Experience in Kubernetes cluster build and administration, working Pods, nodes, nodeport, namespaces creations and administration EKS.
- Experience on working with configmaps and secrets in Kubernetes clusters.
- Working with HAProxy and Kubernetes Ingress controllers.
- Good understanding of Agile Scrum (Sprints and user stories).
- Hands on experience in working with CI/CD tools like JENKINS like jobs and pipelines configuration.
- Proficient in AWS services like VPC, EC2, S3, ELB, AutoScalingGroups(ASG), EBS, RDS, IAM, Route 53, CloudWatch.
- Creating NAT gateways and instances to allow communication from the private instances to the internet through bastion hosts.
- Used security groups, network ACL’s, internet gateways and route tables to ensure a secure zone for organization in AWS public cloud.
- Created and configured Elastic load balancers and auto scaling groups to distribute the traffic and to have a cost efficient, fault tolerant and highly available environment.
Timeline
Site Reliability Engineer – ELK Stack, Cloud, DevOps & UNIX Administration
Percept Solutions Pte. Ltd
01.2023 - Current
Site Reliability Engineer – Cloud, DevOps & UNIX Administration
Helius Technologies Pte Ltd
01.2021 - 12.2022
Senior Engineer – UNIX, Cloud and DevOps Administration
DBS Bank Ltd
09.2016 - 01.2021
Senior Consultant – PSeries Migrations & AIX
MindCraft Singapore Pte. Ltd
09.2015 - 06.2016
Technical Specialist – UNIX Server Management
Wipro InfoTech Limited
04.2011 - 09.2015
Master of Computer Applications -
Pondicherry University
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