• Setup high available and fail-safe clusters of Mongo, Elasticsearch, Redis.• Designed Architecture and Implemented APIs capable of handling up to 10,000 requests/sec leveraging Nginx, Logstash, and RabbitMQ• Centralised logging of all APIs events leveraging ELK (Elasticsearch + Logstash + Kibana) and Filebeat• Handled 100+ servers using Ansible.• Cloud migration with 10TB+ data with minimal downtime.• Designed backup/archival policies for our databases [Mongo, Elasticsearch, Mysql]• Setup bastion host for single sign-on to servers, record every ssh session established.• Reduced server cost by 58% within a week by migrating entire infrastructure from Cloud to Dedicated servers.• Further, reduced server cost by 26% by optimizing code and re-architecting APIs.• Setup OpenVPN server, allowing developers to work from anywhere without explicitly whitelisting their IPs.• Actively participated in designing database schemas which empower user's segmentation and analytics.• Actively participated in developing our own mailing solution, capable of sending 20 million email a day.• Developed a microservice which resize images on-demand leveraging AWS Lambda, S3, CloudFront, API Gateway, Nodejs. It reduced storage cost. https://d39sghb3udgxv0.cloudfront.net/earth.jpeg;h=100;w=100★ Challenges ★ • Cloud migration from AWS to Azure: Migration of 7TB+ data and 90+ servers within 10 days including databases MongoDB Cluster, Elasticsearch Cluster, RabbitMQ Cluster, Mysql, APIs, worker servers. This migration helped in saving infra cost.• ScalabilityScalability has always been the biggest challenge which involves scaling of entire application including Web APIs, RabbitMQ, Redis, MongoDB, Elasticsearch, etc• Cloud migration from Azure to OVH dedicated servers:This migration involved 10TB+ data and 100+ servers. We could have achieved it within 5 days and downtime of two hours. It reduced infra cost by 58%.

• Got familiar with internet fundamentals, explored various AWS services like EC2, ELB, Spot Instances, RDS, Auto Scaling, Cloudwatch, S3, SES, SNS, Route 53.• Managed entire infrastructure of 10+ servers hosted on AWS.• Developed a micro service for data mining, SocialCrawler which crawls data through twitter profiles and their followers recursively to grow our contact database.• Integrated third party service, fullcontact for enriching user's social profile.• Developed social login as a service which can be integrated with existing login/registration of any site.• Actively participated on developing Gamification leveraging LAMP stack.• Actively participated in developing a facebook app to promote one of our site (www.bornrich.com)

• Leveraged LAMP stack and developed CMS called StructuredWiki. More than 100 blogs were served with features of StructuredWiki.WeddingClan.comwww.bornrich.comDIYHealth.comCellphoneBeat.com• Later migrated all these blogs to wordpress.