Serverless Image Converter
S3 → Lambda (Sharp) → S3 pipeline with event-driven processing, IAM least-privilege, and CloudFront delivery. Includes CORS hardening.
I'm Umber — Cloud & Security Engineer focused on AWS, CyberArk, and DevOps automation. I build reliable systems, lock down access, and make dashboards that sing.
A curated set of hands-on builds. Filter by stack to jump fast.
S3 → Lambda (Sharp) → S3 pipeline with event-driven processing, IAM least-privilege, and CloudFront delivery. Includes CORS hardening.
Reference architecture for Vault, PVWA, and PSM across private subnets with NAT, ALB, WAF, and session recording. Automated with IaC.
SES-backed transactional email via API Gateway + Lambda. Signature validation, DLQ, and observability with CloudWatch.
Multi-region exit nodes with route advertisements, health probes, and auto-recovery scripts on GL.iNet/OpenWrt.
Hardened static hosting with OAC, versioned deploys, HSTS, and bot control. Blue/green invalidations for safe rollouts.
Org-wide enablement with delegated admin, auto-enrollment, and finding export to S3/Lake. All via Terraform.
The toolkit I reach for to build, break (safely), and harden.
Key roles and impact across cloud, security, and infrastructure engineering.
Built and operated HA CyberArk PAM (CPM/PSM/PVWA/Vault/CM) in AWS/Azure; integrated Splunk & QRadar for live session monitoring; automated onboarding via REST + PowerShell (~30% efficiency gain); designed DR/failover targeting 99.99% uptime; tightened network controls (firewalls, VPNs, tunnels) and aligned PAM to least-privilege/zero-trust with ISO 27001/CIS.
Delivered a Next.js storefront with Stripe + Skydrop logistics, subscription checkout, and a non-technical admin dashboard; launched under budget in 3 weeks, enabling subscription revenue and smoother ops.
Led Voyager 8 deployments with Amazon Aurora; enforced Azure tenant isolation & RBAC; designed HA across DB/app layers; investigated performance using targeted SQL diagnostics to resolve root causes.
Administered Microsoft 365 (Exchange/SharePoint/Teams) and Azure AD; managed hybrid AD and VDI rollout; handled patching/endpoint controls to secure remote-first operations.
Got a project, an interview, or a thorny incident? Drop a line — I reply fast.