CI/CD Security Pipeline

Overview

Transformed a manual, error-prone deployment process into a fully automated, security-gated CI/CD pipeline using GitHub Actions, Docker, and AWS ECS. Deployment frequency increased 10× while eliminating all manual intervention.

The Problem

Deployments relied on manual steps, SSH access, and tribal knowledge. There were no automated security checks — SAST, dependency scanning, and container vulnerability assessments happened ad-hoc if at all. A single deployment took hours and carried significant risk of human error. Rollbacks required direct database and server access.

The Solution

I designed and implemented a full GitHub Actions pipeline with SAST scanning (Semgrep/SonarQube), dependency vulnerability checking (OWASP Dependency-Check), Docker image scanning (Trivy), Terraform infrastructure validation, automated staging deployment with smoke tests, blue/green production deployment to AWS ECS/ECR, and automated rollback triggers on health check failure. Security gates block promotion on any critical finding.

The Results

Deployment frequency increased 10× with zero manual steps. Mean time to production dropped from hours to under 15 minutes. Rollback time is under 5 minutes via automated ECS task revision swap. Security findings are caught before production 100% of the time. The team onboarded to the new workflow in one sprint.

Key Takeaways

• →Security gates only work if they're fast — slow scans get bypassed; invest in scan performance from day one
• →Blue/green deployments make rollback a non-event, which dramatically reduces deployment anxiety
• →Start with the happy path and iterate on edge cases — a working basic pipeline beats a perfect incomplete one
• →Treat infrastructure as code from the start; retrofitting Terraform after the fact is significantly more expensive

Tools & Technologies