Manager, Platform Engineering

Carlos D. Castillo

I build and design cloud infrastructure on AWS, using tools like Terraform and CloudFormation to create systems that are reliable, repeatable, and easy to maintain.

About Me

Background & Philosophy

I build and design cloud infrastructure. My focus is on AWS, using tools like Terraform and CloudFormation to create systems that are reliable, repeatable, and easy to maintain.

I came up through systems administration and network engineering before moving into architecture—which means I understand what happens when things break at 2am, and I design with that in mind. I care about doing things the right way: clean automation, solid documentation, and infrastructure that doesn't require heroics to keep running.

Still learning, still building.

10+
Years in IT
2
AWS Certifications
AWS
Primary Cloud
IaC
Terraform & CF
Career

Experience

Jan 2026 — Present

Manager, Platform Engineering

Theradex Oncology

Leading a team that enables developers to deploy applications in the cloud. Driving platform strategy, automation, and developer experience improvements.

Dec 2023 — Jan 2026

Solutions Architect

Theradex Oncology

Designed and implemented cloud architecture on AWS. Led infrastructure modernization initiatives and established IaC practices with Terraform and CloudFormation.

Jul 2021 — Dec 2023

Systems Engineer

Theradex Oncology

Bridged infrastructure and development teams. Expanded cloud footprint and enhanced system performance and scalability.

Jul 2017 — Aug 2021

Network Systems Administrator

Theradex Oncology

Managed enterprise infrastructure including firewalls, routing, switching, and Windows Server environments. Implemented backup and disaster recovery solutions.

Mar 2015 — Jul 2017

Systems Administrator

Endicott Comm Inc.

Administered Windows Server infrastructure, virtualization platforms, and network security appliances.

Jun 2013 — Mar 2015

Desktop Support Administrator

DrJays.com

Managed Linux infrastructure and virtualization environments. First professional IT role.

Expertise

Skills & Tools

☁️
Cloud Platforms + Services
AWS Azure EC2 S3 RDS Lambda ECR/ECS FSx MGN VPC Route 53
⚙️
Automation + Monitoring
Terraform CloudFormation GitHub Actions CI/CD Datadog CloudWatch
🖥️
OS + Networking
Windows Server Linux Active Directory DNS DHCP Firewalls VPN VMware Hyper-V Veeam Hyperconverged (VxRail)
Credentials

Certifications

SAA

AWS Solutions Architect – Associate

Amazon Web Services

CCP

AWS Cloud Practitioner

Amazon Web Services

Work

Projects & Highlights

Cloud Migration

Enterprise File Share Migration

Migrated on-premises file shares to Amazon FSx for Windows File Server, improving reliability and reducing maintenance overhead.

AWS FSx Active Directory
End User Computing

Virtual Desktop Infrastructure

Deployed Amazon Workspaces to provide secure, scalable virtual desktops for end users and new application delivery.

AWS Workspaces VDI
Application Platform

Serverless Application Infrastructure

Built modern application infrastructure leveraging containerized workloads and serverless compute for new internal applications.

ECR/ECS Lambda RDS S3