Kaustabh Sen profile photo 1 on Tal

Kaustabh Sen

Engineering & Cloud Architecture Leader | AWS | Platform Engineering | DevOps Transformation | Cloud Governance | 21+ Years

Bengaluru

15+ years of work experience

Freelance
Mar 20242 yrs 8 mosPresent

Remote

- Design secure, scalable AWS architectures spanning multiple VPCs, Route 53, VPN, managed databases and Terraform for isolated development and production environments. - Architect scalable cloud networking and secure remote development environments supporting Java and Node.js workloads. - Design and implement GitOps-based CI/CD platforms automating deployments across development, integration and production environments. - Automate container image build, promotion and deployment workflows to improve release reliability and operational efficiency. - Develop reusable Infrastructure-as-Code modules enabling consistent and repeatable cloud provisioning across environments. - Advise on cloud architecture, infrastructure automation, deployment strategy and platform engineering practices.
Paytm
Dec 20203 yrs 4 mosMar 2024

Bengaluru

- Managed a 53-member engineering organization with 11 direct reports, providing technical and organizational leadership across cloud platform, infrastructure, automation and engineering transformation initiatives. - Reduced AWS infrastructure spend by 45% (~US$46K/month) across 20+ AWS accounts through Graviton adoption, GP3 migration, rightsizing and storage optimization. - Spearheaded engineering strategy and delivery for enterprise cloud platforms, including a Centralized Cloud Cost Management Platform and Cloud Security Remediation Framework, improving governance and operational efficiency. - Architected and engineered a Python-based cross-account IAM automation platform supporting 150+ AWS accounts, strengthening security governance and reducing manual operational effort. - Developed self-service cloud operations capabilities, including a Slack-based chatbot, improving developer productivity and reducing dependency on manual infrastructure operations. - Partnered with engineering leaders and business stakeholders to define priorities, evaluate cloud architectures and drive solutions aligned with business, scalability and security requirements. - Drove cloud modernization, Platform Engineering, automation and infrastructure transformation initiatives, connecting engineering strategy with measurable outcomes across governance, security, cost optimization and developer enablement.
Expedia Group
Jan 20164 yrs 9 mosSep 2020

Gurugram

- Architected a multi-region RabbitMQ platform on AWS using EC2, Route 53, Lambda and automated failover strategies to improve availability and disaster recovery. - Led cloud migration and modernization initiatives using CI/CD automation, improving software delivery and deployment reliability. - Designed a self-service provisioning platform that reduced RabbitMQ resource provisioning from days to minutes. - Improved platform resilience through observability, business continuity planning and chaos engineering practices. - Automated infrastructure and application deployment workflows to improve operational consistency and engineering productivity.
IBM India Pvt. Ltd.
Dec 20105 yrs 2 mosJan 2016

Bengaluru

- Served as India SME for Apache/Tomcat, leading enterprise middleware initiatives supporting mission-critical Java applications. - Automated Unix patch validation processes, reducing execution time by 70% and improving operational efficiency. - Led application deployments, disaster recovery exercises and security audits supporting platform availability and operational resilience. - Provided technical leadership and operational support for enterprise middleware environments.
Mar 20094 mosJun 2009

Singapore

- Served as client-facing technical liaison for offshore Java middleware support. - Led deployment, disaster recovery, release management, triage and root-cause analysis activities - Mentored and onboarded offshore team members.

Kaustabh’s AI Stack

antigravity
antigravity
github copilot
github copilot
ChatGPT
ChatGPT

Education

Indian Institute of Engineering Science and Technology (IIEST), Shibpur

Bachelor of Engineering (BE)

Indian Institute of Engineering Science and Technology (IIEST), Shibpur

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Headline

Engineering & Cloud Architecture Leader | AWS | Platform Engineering | DevOps Transformation | Cloud Governance | 21+ Years

About

Engineering and Cloud Architecture leader with 21+ years of experience building and modernizing large-scale technology platforms, cloud infrastructure, and engineering environments. I specialize in AWS, Platform Engineering, DevOps transformation, cloud architecture, infrastructure automation, cloud governance, and engineering productivity. Over the course of my career, I've led initiatives across enterprise and multi-account AWS environments, cloud migration, hybrid networking, Infrastructure as Code, security automation, self-service platforms, and cloud cost optimization. Selected impact: - Reduced AWS infrastructure spend by 45% across 20+ AWS accounts, delivering approximately US$46K/month in savings. - Designed IAM governance and automation capabilities spanning 150+ AWS accounts. - Built self-service cloud and platform capabilities that reduced infrastructure provisioning from days to minutes. - Delivered cloud cost management, security remediation, automation, and developer self-service platforms. - Led cloud modernization and platform engineering initiatives across enterprise environments. My leadership approach combines architecture, engineering execution, automation, operational excellence and business outcomes to build secure, scalable and resilient technology platforms. Core expertise: AWS | Cloud Architecture | Platform Engineering | DevOps | Cloud Governance | IAM | Infrastructure as Code | Terraform | CI/CD | GitOps | Cloud Cost Optimization | Automation | Developer Productivity | Reliability Engineering I enjoy solving complex technology problems, building high-performing engineering capabilities and helping organizations modernize their cloud and platform environments. Open to senior engineering leadership opportunities globally, including relocation to the UK, Europe and other international technology hubs.

Location

Bengaluru

AI stack

antigravity

github copilot

ChatGPT

Work experience

Independent Cloud & Platform Architect at Freelance, Mar 2024 - Present · 2 yrs 8 mos, Remote, - Design secure, scalable AWS architectures spanning multiple VPCs, Route 53, VPN, managed databases and Terraform for isolated development and production environments. - Architect scalable cloud networking and secure remote development environments supporting Java and Node.js workloads. - Design and implement GitOps-based CI/CD platforms automating deployments across development, integration and production environments. - Automate container image build, promotion and deployment workflows to improve release reliability and operational efficiency. - Develop reusable Infrastructure-as-Code modules enabling consistent and repeatable cloud provisioning across environments. - Advise on cloud architecture, infrastructure automation, deployment strategy and platform engineering practices.

Director Of Engineering at Paytm, Dec 2020 - Mar 2024 · 3 yrs 4 mos, Bengaluru, - Managed a 53-member engineering organization with 11 direct reports, providing technical and organizational leadership across cloud platform, infrastructure, automation and engineering transformation initiatives. - Reduced AWS infrastructure spend by 45% (~US$46K/month) across 20+ AWS accounts through Graviton adoption, GP3 migration, rightsizing and storage optimization. - Spearheaded engineering strategy and delivery for enterprise cloud platforms, including a Centralized Cloud Cost Management Platform and Cloud Security Remediation Framework, improving governance and operational efficiency. - Architected and engineered a Python-based cross-account IAM automation platform supporting 150+ AWS accounts, strengthening security governance and reducing manual operational effort. - Developed self-service cloud operations capabilities, including a Slack-based chatbot, improving developer productivity and reducing dependency on manual infrastructure operations. - Partnered with engineering leaders and business stakeholders to define priorities, evaluate cloud architectures and drive solutions aligned with business, scalability and security requirements. - Drove cloud modernization, Platform Engineering, automation and infrastructure transformation initiatives, connecting engineering strategy with measurable outcomes across governance, security, cost optimization and developer enablement.

Application Engineer II at Expedia Group, Jan 2016 - Sep 2020 · 4 yrs 9 mos, Gurugram, - Architected a multi-region RabbitMQ platform on AWS using EC2, Route 53, Lambda and automated failover strategies to improve availability and disaster recovery. - Led cloud migration and modernization initiatives using CI/CD automation, improving software delivery and deployment reliability. - Designed a self-service provisioning platform that reduced RabbitMQ resource provisioning from days to minutes. - Improved platform resilience through observability, business continuity planning and chaos engineering practices. - Automated infrastructure and application deployment workflows to improve operational consistency and engineering productivity.

Technical Services Specialist at IBM India Pvt. Ltd., Dec 2010 - Jan 2016 · 5 yrs 2 mos, Bengaluru, - Served as India SME for Apache/Tomcat, leading enterprise middleware initiatives supporting mission-critical Java applications. - Automated Unix patch validation processes, reducing execution time by 70% and improving operational efficiency. - Led application deployments, disaster recovery exercises and security audits supporting platform availability and operational resilience. - Provided technical leadership and operational support for enterprise middleware environments.

Technical Lead at HCL Singapore Pte Ltd, Mar 2009 - Jun 2009 · 4 mos, Singapore, - Served as client-facing technical liaison for offshore Java middleware support. - Led deployment, disaster recovery, release management, triage and root-cause analysis activities - Mentored and onboarded offshore team members.

Education

Bachelor of Engineering (BE), Indian Institute of Engineering Science and Technology (IIEST), Shibpur

Kaustabh Sen - Independent Cloud & Platform Architect in Bengaluru | Tal