JeffM.Dev
Jeffrey Mitchell
Full-stack engineer. Computer Enjoyer.
Broomfield, CO
Work
Leading full-stack development of WorkshopEngine and maintaining TeachEngineering.org for 2M+ annual users.
- Lead full-stack development of WorkshopEngine — a platform-agnostic, web-native CS/IT learning platform (Vue + .NET)
- Maintain TeachEngineering.org, a .NET platform freely distributing STEM curricula to 2M+ annual users
- Migrated codebase .NET 7 → .NET 10; refactored platform-specific paths for full Linux/macOS/Windows parity
- Standardized local dev environments via VS Code DevContainers, collapsing new-developer onboarding from ~1 day to a single click
Modernized legacy financial apps onto .NET + React; QA strategy and CI/CD overhauls cut incidents and cloud spend.
- Migrated legacy in-house financial apps to a modern .NET + React stack powering internal pipelines and APIs
- Designed and rolled out a comprehensive QA strategy integrating manual and automated tests, cutting regression-related production incidents
- Overhauled CI/CD build and test pipelines, accelerating build times and trimming monthly pipeline cloud spend
Modernized aerospace order-logic workflows with a React + Redux app, a Storybook library, and leaner PATCH-based APIs.
- Built a React + Redux web app to modernize order-logic workflows for aerospace customers, replacing a legacy desktop tool
- Built a Storybook component library to drive visual consistency and accelerate feature delivery
- Refactored REST endpoints to HTTP PATCH for partial updates, shrinking typical payloads from 1 MB+ to a few KB
Built and deployed a serverless ML model on AWS predicting tool-failure causes — five-figure projected savings per SKU.
- Built an ML classification model in Python to triage tools-in-service, predicting failure cause from service-center intake data
- Deployed the model on AWS via serverless infrastructure, projected to deliver 5-figure annual service-cost savings per SKU
Mentored OS and Computer Systems students across 4 semesters; sections consistently top-performing.
- Mentored students in CSCI 3753 (Operating Systems) and CSCI 2400 (Computer Systems) across 4 semesters via weekly office hours and recitations
Ran phishing campaigns and awareness training that cut the office phish-prone rating by more than 30%.
- Ran KnowBe4 phishing campaigns and led a cybersecurity awareness seminar, reducing office phish-prone rating by 30%+
Projects
This very site: one Payload CMS, many absurd frontends. Refresh for a new one.
96TB flash-accelerated ZFS server hosting a fleet of containerized services — cloud, media, Git, CI/CD, monitoring.
- 96TB flash-accelerated ZFS on Ubuntu hosting containerized services (Nextcloud, media, self-hosted Git) via Docker
- Reverse proxy + TLS, Prometheus/Grafana monitoring, self-hosted CI/CD, Incus for dev environments
Education & Certifications
B.S. in Computer Science from CU Boulder — 3.95 GPA.
Networking fundamentals certification.
Cloud and Azure services fundamentals certification.
Skills
Interests
Perpetually reworking the 96TB $200 mini-pc homelab. ZFS, Docker, and self-hosted everything.
From kernel coursework to a house full of Ubuntu boxes.