Dec 2022 – Jan 2025 · 2 yrs 1 mo · Bengaluru, Karnataka, India · Hybrid

• Managing managers of the aforementioned verticals and Infrastructure comprising AWS and Azure.
• Cost Optimization strategies via quick cleanups and long term governance and processes resulting in savings of 30%.
• Implemented FinOps dashboard to dissect granular breakup of various services and products.
• Further driving up efficiency and elasticity of Kubernetes clusters and associated cloud components with dynamic off peak orchestration.
• Better change management process across verticals for reduction in downtimes.
• Setting up incident management boards and RCA audit processes for further governance.
• Reduced man hours of DevOps oncall via long term planning of efficient playbooks, granulated tags and implementation of AI based chatbot trained on playbooks.
• Implemented low cost contract based helpdesk to reduce noise resulting in significant boost in R&D DevOps productivity and reduction of oncall fatigue.
• Cross Vertical collaboration to assist in Multi Product efficiency via various deployments.

May 2019 – Nov 2022 · 3 yrs 6 mos · Bangaluru

• Key stakeholder in driving through audits of IPO process for Indonesia exchange.
• Build roadmap strategy for 3-5 yrs of cloud infra in terms of scalability, efficiency, HA, BCP and DR.
• Driving IAC (Infrastructure as Code) project in GCP using Terraform via Terragrunt for long term sustainability.
• Driving various migration projects from old to new infra.
• Improving various security aspects after driving gap analysis in collaboration with Google architects and Infosec teams.
• Efficient network segmentation via self built IPAM with API for new region deployments.
• Improving change management with Banking interfaces with legacy stacks.
• Driving connectivity migrations from Point to Point to mTLS.
• Implementation of PKI as a long term strategy for mTLS facilitation.

Dec 2015 – Sep 2018 · 2 yrs 9 mos · United States

• Program managing for 14 member software development team alongside with anti DDoS bare metal fleet.
• Successful YOY delivery of targeted number of Mitigation gear installations worldwide TransitCenters.
• Doubled up as a System Engineer to deploy servers, AWS environments and build internal AWS cloudops infra from time to time to get the job done.
• From concept to practical build to global rollout of Anti DdoS fleet and network gears.
• Improvement of Installation process to crash timelines of project by 40%
• Work with the AWS cloud software team on agile methods to deliver features as per customer requirements.
• Major Stakeholder in design and implementation of new deployment system in China as a separate region.
• Configured (hands on) route based VPN between Linux and Cisco using Libreswan and Quagga based BGP session for the new design in China.
• Proposed new ideas to scale out next generation packet processing and inspection using smartNICs, NPU and FPGA based solutions. (https://www.linkedin.com/pulse/question-packet-handling-high-bandwidth-large-scale-chattopadhyay/)
• Build and maintain strong working relationships with partner Network, DCO, BIZDEV and Hardware Engineering teams for efficient collaboration.

May 2014 – Nov 2015 · 1 yr 6 mos · India

• Building IT infrastructure for large Fulfilment Centers across India from scratch.
• Completed all Fulfillment center infrastructure deliveries within target time in spite of continuous changes to the build.
• Maintained good relationships with the entire vendor lineup for effective output in all shifts.
• Proposed auto vlan configurations for easy deployments of different segments of servers, printers, wireless, surveillance cameras and heat monitoring devices.
• Successful coordination with Civil, Electrical, HVAC and other Pallet vendors for collaborative implementation of the entire fulfillment center.
• Went out of the way to help other teams to build NAGIOS monitoring portal (self-hands on) for smaller distribution centers outside Amazon network including backend database. Also built a Zabbix heat monitoring portal using SNMP mibs for smaller distribution centers.
• Budgeting / stock keeping / allocation juggling for large inventory of IT across India to shift between multiple projects.

Nov 2013 – Apr 2014 · 5 mos · Gurugram, Haryana, India

• Maintained production environment on AWS for uptime of 24/7 with DevOps culture and automation.
• Suggested Ansible as the configuration management tool after evaluating others and evaluating team learning curve.
• Wrote playbooks and mentored team at the startup phase of on boarding Ansible.
• Improved existing Ganglia cluster monitoring system with drill down metrics.
• Maintained environment with HAproxy, Redis, MongoDB (sharded), Apache, Nagios, Ganglia, Graphite.

Jun 2012 – Oct 2013 · 1 yr 4 mos · Gurugram, Haryana, India

• Responsible for all IT functions for this small startup.
• Incharge of the entire IT Department for the Startup.
• Implemented PFSense cluster as the firewall and web cache solution with smart floating rules.
• Insisted on separate insurance while transferring assets from one COLO to another which saved the company a lot of money when it was damaged during transfer.
• Supported development infrastructure with KVM and LXC containers.

Apr 2006 – May 2012 · 6 yrs 1 mo · Bangalore

• In charge of IT operations across India, Australia and UK.
• People manager for 15 direct reports in India, UK and Australia.
• Successful building of IT infrastructure for corp offices across India and UK from scratch. Which includes Firewall, server, storage, wireless, voice and video implementation, documentation, recruitment of new operations team for the region.
• Successfully engaged with external vendors for recruitment of the operations team in the UK as I had limited reference in the new country.
• Initiated and completed few new technology rollouts namely wireless, video and voip system being 70% hands on while also comparing the selected solutions with market competitors to make data driven decisions for business.
• With Asterisk for voip rollout worldwide, did extensive research on different codecs and echo cancellation mechanisms for optimized output.
• Initiated multi ISP load balanced connections for corp offices in India and UK for uninterrupted business.

Mar 2005 – Mar 2006 · 1 yr · Siliguri, West Bengal, India · On-site

Apr 1999 – Feb 2005 · 5 yrs 10 mos · Kolkata, West Bengal, India · On-site