Systems Administration
Windows Server, Red Hat Linux, Active Directory, virtualization, patching, endpoint configuration, and backups/recovery.
Infrastructure Portfolio
Zac Kelder
Systems Administrator | Cloud & DevOps-Focused Engineer
I’m an experienced systems administrator with 8 years across enterprise and military environments, now building cloud-backed projects that demonstrate Linux/Windows administration, AWS deployment, Dockerized services, secure operations, and production-readiness.
8+Years IT Experience
9Person Team Led
$20M+Equipment Accountability
Pre-TestFlightCloud-Backed Project
AWSHosted FastAPI Backend
Technical Profile
Systems foundation with cloud infrastructure momentum.
Security Operations
Security+ CE, ITIL, Azure Defender, Sentinel, Sophos, DLP, vulnerability response, and secure operations support.
Cloud & DevOps
AWS EC2, Docker, Linux server deployment, custom domain/HTTPS setup, Git/GitHub, deployment workflows, and infrastructure roadmap.
Networking & Infrastructure
Cisco routers/switches, network troubleshooting, encrypted communications systems, and global user support.
Backend Services
FastAPI, REST APIs, PostgreSQL/Supabase, OCR processing pipeline, and service-layer integration for cloud-backed projects.
Featured Project
Food Checker
Cloud-backed infrastructure project
A real product surface for deployment and operations practice.
Food Checker is a pre-TestFlight iOS app with a Dockerized FastAPI backend deployed on AWS EC2. It uses OCR to scan ingredient labels, rule-based analysis, and PostgreSQL/Supabase-backed scan functionality while demonstrating practical backend deployment, cloud hosting, API operations, and a path toward production DevOps practices.
Beta invite link coming soon. Food Checker is informational only and is not medical, allergy, or nutrition advice.
iOS
FastAPI
Docker
AWS EC2
OCR
PostgreSQL
Supabase
Production-Readiness Roadmap
Completed / Built
- AWS EC2-hosted backend
- Dockerized FastAPI service
- OCR scan flow
- Supabase/PostgreSQL-backed scan functionality
- Rule-based analysis
- iOS pre-TestFlight beta
- Public portfolio/legal pages
Planned / Next
Infrastructure upgrades
- Custom API domain and HTTPS
- GitHub Actions deployment workflow
- Terraform-managed infrastructure
- Structured logging and CloudWatch monitoring
- Health checks and deploy verification
- Stronger ingredient dataset
- Improved ingredient matching and OCR reliability
- Eventual container registry/deployment upgrade
Experience
Operational responsibility across enterprise and military environments.
- Administered Windows and Linux virtual servers and supported system performance, patching, endpoint configuration, and user access.
- Supported security operations using tools such as Azure Defender/Sentinel and Sophos.
- Assisted with vulnerability response, data loss protection, email filtering, backup/recovery, onboarding, and global user support.
- Diagnosed network and endpoint issues while contributing to IT projects in a fast-paced enterprise environment.
- Led, mentored, and trained a 9-person team supporting intelligence IT operations.
- Supported Windows and Red Hat Linux servers, Cisco network equipment, encrypted communications systems, and classified infrastructure.
- Maintained accountability and serviceability of classified equipment valued over $20M.
- Supported patching, troubleshooting, system performance monitoring, security procedures, and deployment readiness.
Contact
Open to systems, cloud infrastructure, DevOps, and platform operations roles.
I’m focused on roles where hands-on infrastructure experience, security-minded operations, and practical cloud deployment work can grow together.