Mahesh Rajannan
Takeda Pharmaceuticals Cloud & Platform Engineering Lead (Architect) @Takeda
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WORK HISTORY
Takeda Pharmaceuticals Cloud & Platform Engineering Lead (Architect) @Takeda
Chicago, IL, US
Architected a high-throughput AWS platform supporting labs and up to ~4.5M daily transactions across real-time, GxP-regulated integrations.Platforms: AWS (EKS, Lambda, API Gateway, RDS, S3), Kubernetes, Kafka, Dapr, Argo CD (GitOps), GitHub Actions, Terraform Cloud, AppDynamics, Splunk.Responsibilities: Led enterprise modernization from OpenShift to AWS EKS, establishing a cloud-native reference architecture for GxP systems. Designed microservices and event-driven architecture (Kafka, Dapr). Led a 20-member global engineering team across architecture, governance, and delivery. Built CI/CD + GitOps pipelines (GitHub Actions, Argo CD) for controlled, auditable multi-environment deployments. Integrated edge devices with cloud-native microservices for real-time workflows. Established cost governance and tagging (Apptio, AWS). Built Internal Developer Platform (IDP) for self-service artifact promotion and environment consistency. Implemented observability stack (AppDynamics, Splunk) and SRE practices via load and chaos testing.Key Achievements: Provisioning time ~1 month → ~6 hours; resource efficiency +~50%;~700ms p95 latency; EKS reference architecture adopted enterprise-wide; AI-assisted prototype to accelerate vendor alignment.
EDUCATION
The University of Kansas
Master of Business Administration, Information Technology
Bharathiar University
BE, Electrical And Electronics
The University of Texas at Dallas
M.S in Telecommunications Engineering, Networking And Telecommunications
Bharathiar University
Bachelor of Science, Electrical and Electronics Engineering
SKILLS
ABOUT MAHESH RAJANNAN
Cloud & Platform Architect with 20+ years leading enterprise-scale cloud platform modernization across AWS and GCP in regulated environments.I design and deliver cloud-native platforms on AWS (EKS, serverless, event-driven systems) and GCP (GKE, Anthos), with deep focus on platform engineering, distributed systems, and Kubernetes fleet management at scale.Track record: 30–50% performance gains, provisioning time from 1 month to 6 hours, and ~50% infrastructure cost reduction.I pair architecture leadership with hands-on execution — rapidly building AI-enabled, end-to-end POCs (Terraform, Kubernetes, APIs) to validate designs and accelerate enterprise adoption.Open to Staff/Principal Platform Architect roles.
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