Barun Das Email & Phone Number

Kolkata, West Bengal, India

- Consulting, E2E Integration & Testing of enterprise Tecom ERS application stack upon Kubernetes/Openshift Cluster.- Writing Kubernetes manifest files.- Design & setup of Prometheus, Grafana, EFK, ELK based custom monitoring and alerting system.- Greenfield deployment including Linux-OS, Web Proxy, SSL, MySQL Cluster Replication, DB Proxy, Networking, Security Compliance, SIT, UAT, Go-Live.- Expertise in Java micro service based application debugging.- Dimensioning system resources as per the project requirement.- Engagement with Customer, Delivery team and development team for on time solution delivery.- Delivering training to customer across multiple geography. - Engagement with pre-sales/CSM on answering RFP's.

Kolkata Area, India

Implementation of on premise systems to AWS Cloud migration. Planning and implementation of Kubernetes Cluster along with Istio service mesh. High-level designing, Cost-analysis, POC, Project planning. Followed the best practices of VPC Design,EC2 Security/IPSec-VPN, Domain management by ROUTE-53, Proactive custom monitoring by CLOUDWATCH.Install configure & maintenance of Linux/Unix OS, KVM, Middleware stack and hardwares.Deployment and Integration of Electronic Recharge System (ERS).Automating custom infra /application's KPI monitoring using Nagios.SIT,UAT- End to End Testing for API based services using SOAP.Development of automated daily operational and support scripts (including server/application healthcheck alarm notifications,daily custom reports and custom KPIs).Building & implementing Middleware WEB technology stacks including WEBSERVER/APPLICATION SERVERs/SSL/SSO/Elasticsearch-Logstash , HAProxy.JVM tuning , Apache Rewrite, WebApps MigrationHarden and re mediating OS/Apps vulnerabilities.Conducting the onboarding procedure and trainings for new joinee.Adhering and practicing ITIL/Agile compliant ecosystem.

Bengaluru Area, India

Linux & Middleware AdminCloud Platform Services- Linux OS, Web, Middleware.Building & implementing Middleware WEB technology stacks from the scratch including WEBSERVERs/APPLICATION SERVERs/SSL/SSO Installations, Configurations & Maintenance. Automating system admin tasks through bash scripting .JVM tuning , Apache Rewrite, WebApps Migration, Jboss AS, Tomat ASTeam co-work within offshore and onshore counterpart across different Geos.Harden and re mediating OS/Apps vulnerabilities.

Bangalore

Enterprise Unix/Linux platform infrastructure support and maintenance more than 500+ Unix nodes across different Geos.Adhering ITIL (IBM Service Mgmnt/IPC) process driven environment. Install , deploy and troubleshooting of Apache Tomcat : mod_proxy, mod_jk, mod_statusInstalling custom Java application and production support for the same.Install, deploy and troubleshooting Jboss AS 5.xTomcat/Jboss session replication across Horizontal Cluster! Apache security (SSL) certificate installation.Apache as front-end ( load balance/proxy/cluster) with Tomcat/Jboss.JVM Management: Thread Analysis, Heap Memory, GarbageCollector Designed and implemented SOPs for incident management, change management, and configuration management for a Linux based web application production server environment.Root Cause Analysis of re-occurring incidents.Linux KVM – VM installations, maintenance & managementiSCSI (SAN LUN) initiator configuration. NAS (NFS-common,client) client side configuration.Linux Networking: SSH,SUDO,NFS,FTP, Iptables configurations, sub ethernet interface configurations.TCP/IP traffic/packet analysis through tcpdump/ wireshark utilities.Extensive footprints on Linux file-systems (LVM), User-Group, Process, CPU, Security & Kernel managements.Understanding public key, private key along with user management.Extensive footprints in Process/Service/Team play management in different time zone and cross-competent environment.

Bengaluru Area, India

Deployed as VAS SR.Operations Engineer

Gurgaon, India

Linux based mobile VAS application : Install , maintenance & troubleshooting

Gurgaon, India

Technical operations of Mobile VAS application

Bca, Computer Science, A

Bachelor'S Degree, Information Technology, 1St Class

BCA

10+2, Science

Activities and Societies: Performed a Science exhibition on Biology , where I was demonstrating the use of microscope .