TAPAN JOSHI

Head Architect - BV AWS Landing Zone & Cloud Operations

• Accelerated provisioning 87%: Architected enterprise AWS Landing Zone with Control Tower, reducing account deployment from 2 weeks to 4 hours across 25+ accounts
• Delivered $2.3M annual savings: Led FinOps transformation through Reserved Instance optimization, Savings Plans, and right-sizing, achieving 35% infrastructure cost reduction while improving performance 25%
• Achieved zero-downtime migration: Orchestrated migration of 30+ production workloads (15TB) to modernized Landing Zone, completing 4 weeks ahead of schedule with 100% business continuity
• Ensured 100% compliance: Automated security framework using AWS Config, Security Hub, and Lambda, reducing audit preparation time by 75% with zero critical findings
• Built high-performance team: Established Cloud Center of Excellence, mentoring 8 DevOps engineers, creating 50+ runbooks, and accelerating developer onboarding by 60%
• Resolved 50+ critical issues: Served as primary AWS escalation architect, maintaining 99.99% uptime across global infrastructure

• Improved security posture 69%: Elevated Well-Architected score from 2.6 to 4.4 by implementing WAF, GuardDuty, IAM Analyzer, and organizational SCPs, achieving APRA CPS 234 compliance
• Reduced costs 40%, accelerated delivery 30%: Refactored monolithic Java applications to microservices on Amazon EKS (Fargate), implementing blue-green deployments via CodePipeline/CodeDeploy
• Migrated 120 VMs with zero downtime: Led VMware to AWS migration using HCX/CloudEndure, completing 4 weeks early while implementing real-time telemetry (CloudWatch → Kinesis → OpenSearch)
• Maintained 99.99% uptime: Architected high-availability for 300+ workloads using multi-AZ Auto Scaling, Route 53 health checks, and self-healing CloudWatch/SSM runbooks
• Achieved aggressive RTO/RPO targets: Implemented 15-minute RPO / 1-hour RTO disaster recovery using cross-region replication, Aurora Global Database, and Route 53 ARC
• Recovered 15% compute capacity: Resolved critical vSphere bottlenecks using Container Insights and X-Ray analysis during batch processing windows

• Enabled Tier-1 banking migration: Architected Kotak Bank's core banking migration to AWS (13-account Landing Zone) with zero customer downtime, meeting RBI & PCI-DSS requirements
• Achieved A$1.5M annual savings: Optimized costs by rightsizing 300+ EC2 instances, implementing S3 lifecycle policies on 200+ buckets, and automating EKS node scheduling
• Accelerated deployments 70%: Built end-to-end CI/CD pipeline (CodePipeline → CodeBuild → CodeDeploy) auto-promoting images to 50+ EKS clusters
• Maintained 5-min RPO / 30-min RTO: Designed active-active multi-region architecture for fraud detection using Route 53 latency routing and DynamoDB global tables
• Passed regulatory audit with zero findings: Secured hybrid infrastructure with Direct Connect, Transit Gateway hub-and-spoke, WAF, GuardDuty, and KMS envelope encryption
• Scaled microservices 15x: Grew architecture from 12 to 180 microservices on EKS, tripling feature velocity while maintaining p95 latency under 120ms

• Defined 3-year cloud strategy: Partnered with Chief Architect to transform product OKRs into AWS reference architecture and migration roadmap with clear budget alignment
• Executed zero-downtime migrations: Led wave-based migration of on-premise applications to AWS (EC2/ECS/Lambda), enabling teams to focus on feature delivery
• Automated infrastructure deployment: Created reusable CloudFormation & Terraform modules enabling reproducible, drift-free stack deployments in minutes
• Proactively eliminated performance issues: Implemented comprehensive monitoring with CloudWatch, X-Ray, and custom canary Lambdas, detecting issues before user impact
• Ensured sub-hour disaster recovery: Built pilot-light/warm-standby DR patterns with Route 53 failover and S3 cross-region replication for tier-1 APIs
• Achieved security compliance: Implemented OWASP & CPS 234 standards using WAF, GuardDuty, and least-privilege IAM, passing penetration tests with zero high-severity findings
• Optimized global content delivery: Deployed MediaConvert → CloudFront pipeline reducing first-frame latency by 60% for APAC viewers

• Reduced client costs 35%: Implemented cost optimization using Cost Explorer, Trusted Advisor, and automated shutdown Lambdas while maintaining performance SLAs
• Prevented 120+ production issues: Conducted 60+ Well-Architected reviews, identifying and resolving high-risk findings before go-live
• Delivered sub-50ms latency: Built multi-region blueprint using Route 53, Global Accelerator, and active/active RDS for APAC and NA users
• Influenced AWS community: Authored 2 whitepapers and presented at re:Invent ANZ on hybrid-connect and FinOps patterns (5,000+ downloads)
• Achieved 98% anomaly detection: Implemented full observability stack with CloudWatch, X-Ray, and custom Grafana dashboards

• Reduced manual intervention 60%: Developed Bash/Perl automation scripts for self-healing infrastructure issues
• Improved network efficiency: Applied LAN/WAN expertise to design modern VPCs and Direct Connect architectures
• Standardized deployments: Created comprehensive runbooks that evolved into today's IaC pipeline patterns