Security Based Company

Overview

For an enterprise focused heavily on advanced cyber-security delivering multi-tenant SaaS solutions, I architected a completely segregated multi-tenant environment with defense-in-depth networking and infrastructure-as-code automation. The core focus was achieving dry, scalable Infrastructure-as-Code while maintaining airtight security boundaries between tenant systems and data with keyless OIDC-based CI/CD automation.

Infrastructure-as-Code & Automation Stack

The infrastructure automation leveraged Terragrunt for IaC orchestration, wrapping base Terraform modules to dramatically reduce code duplication across 50+ environments and tenant silos. The CI/CD pipeline was powered by Jenkins with OIDC authentication for keyless AWS access, supporting dynamic discovery of infrastructure changes from Git repositories. Advanced pull request automation provided plan-time visibility before production deployments. The pipeline supported multiple deployment modes: auto-apply on merge, manual environment selection, and region-specific targeting with module-level granularity.

Key Responsibilities & Impact

• Architected Terragrunt-based Infrastructure-as-Code framework substantially reducing duplicate configurations across multiple AWS environments, enabling one-click provisioning of new tenant silos.
• Deployed tenant-isolated network architecture with dedicated VPCs per tenant, private subnets, encrypted transit gateways, and Network ACLs enforcing cryptographic boundary protections and zero-trust security posture.
• Implemented OpenID Connect (OIDC) keyless authentication for Jenkins CI/CD pipelines eliminating long-lived AWS credentials, supporting dynamic provider federation with granular role assumption per pipeline stage.
• Built advanced Jenkins pipeline automation supporting PR validation (terraform plan), auto-apply on merge, manual deployments with region/environment selection, and dynamic module discovery for infrastructure changes.
• Maintained holistic CI/CD pipelines enabling push-button, parameter-driven SaaS component provisioning with approval workflows and deployment audit trails.
• Enhanced observability layer capturing CloudTrail logs, VPC Flow Logs, SIEM events, and vital performance metrics into highly secure, immutable, centralized logging buckets with configurable retention and encryption.
• Established automated change management with Git-based version control for infrastructure, supporting rollback, audit trails, and disaster recovery scenarios.