Chicago, IL — Open to opportunities

Shawn
Klein

Systems & DevOps Engineer

I build secure, scalable infrastructure — from cloud deployments and CI/CD pipelines to hardware-integrated systems. A decade of bridging development, operations, and embedded engineering.

View Projects → Get in Touch ↓ Resume
10+
Years in Tech
65%
Phishing Reduced
330k
Users Supported
Capabilities

What I Work With

☁️
Cloud & Infrastructure
AWS Azure EC2 S3 Lambda CDK Terraform
⚙️
DevOps & Automation
Kubernetes Docker CI/CD GitHub Actions Bash PowerShell N8N
🔒
Security & Networking
Firewalls VLANs IDS/IPS SIEM DMARC VPN Active Directory
💻
Development
Python JavaScript Java C# C++ React SQL
🔧
Hardware & Embedded
Raspberry Pi Arduino C++ Linux CNC Automation
🐧
Operating Systems
Ubuntu CentOS Windows Server GPO SSH
Work

Selected Projects

Embedded Systems · Public Installation
Adler Planetarium Night Sky Controls
C++/Arduino system reading rotary encoders to control multi-zone lighting across three independent units. Currently on display at the Adler Planetarium, Chicago.
C++ArduinoHardware
View project →
Full Stack · Internal Tool
SWB Management ERP
Full MERN stack application with Gantt chart time tracking, project estimation, and employee task management built for a 50-person organization.
ReactNode.jsMongoDBAWS
View project →
AI · Finance · Full Stack
Stock Portfolio Analysis Platform
Aggregates data from 6 financial APIs and streams real-time AI-generated analysis via Claude (Anthropic). Built as part of Klein Systems.
PythonClaude APIReactREST APIs
View project →
Security · Infrastructure
Studio IT Infrastructure
Designed and manages full infrastructure for a 40-person creative studio: firewalls, VLANs, IDS/IPS, VPN, AD, SIEM, and DMARC — reducing phishing by 65%.
AzureAWSSIEMFirewall
Read writeup →
IoT · Python · Raspberry Pi
Interactive Marketing Installations
10+ Python and C++ applications on Raspberry Pi and Arduino units controlling interactive client displays — driving up to 80% increase in user engagement.
PythonRaspberry PiC++
View project →
SaaS · Klein Systems
IT Ticketing & Security Training App
Full-stack application for IT ticketing, asset management, and end-user security training. Built and deployed independently under Klein Systems.
ReactNode.jsSQL
View project →
Background

Experience

Oct 2024 — Present
Founder & Engineer
Klein Systems · Chicago, IL
Building SaaS tools independently: nautical asset management, IT ticketing, and an AI-powered stock analysis platform integrating 6 financial APIs.
Dec 2018 — Present
IT Administrator & DevOps Engineer
Bridgewater Studio · Chicago, IL
Architected and manage the full IT and cloud infrastructure. Deployed AWS environments, reduced phishing by 65%, automated operations, and built hardware-integrated Python/C++ applications.
Mar 2015 — Oct 2018
Lead IT Technician
Wynn Dalco / Chicago Public Schools · Chicago, IL
Lead technician supporting 630 schools and 330,000 students. Built Python data pipelines to clean 150k+ record datasets.
Apr 2014 — Oct 2014
Software Developer Apprentice
8th Light · Chicago, IL
Developed Ruby on Rails applications using TDD, Agile, and SOLID principles. Reduced post-launch bugs by 45%.
Writing

Technical Notes

DevOps · AWS
How I Reduced Phishing Attacks 65% with DMARC and Custom Transport Rules
Infrastructure
Designing Secure Small-Business Network Infrastructure from Scratch
Embedded · IoT
Building Interactive Museum Installations with Raspberry Pi
Automation
Automating IT Operations with PowerShell and GPOs
Cloud · AWS
Deploying and Managing an ERP on AWS CDK
Python
Using Python Scripts to Clean 150,000+ Record Datasets
Contact

Let's Talk

I'm open to DevOps/Cloud engineering roles, infrastructure consulting, and interesting freelance projects. If you're building something that needs someone who understands the full stack — from hardware to cloud — reach out.

✉
shawnklein202@gmail.com
in
linkedin.com/in/shawnklein202
⌥
github.com/carpk
∞
thekleinbottle.com
Available for opportunities
Open to Work
Looking for DevOps, Cloud Infrastructure, or Systems Engineering roles in Chicago or remote. Also available for consulting and freelance infrastructure work.
Download Resume →