Skills, etc.

Erin Schnabel

I'm currently a Senior Technical Staff Member at IBM and a Distinguished Engineer at Red Hat, an individual contributor working across both. My focus has shifted from Quarkus toward standing up the Commonhaus Foundation: drafting policy, onboarding projects, finding sponsorships, and building the automation that runs the foundation's machinery. I've also been using AI tooling to help with maintenance and code review, like everyone else.

Web development has been more of a lifelong hobby than a day job. My full-time work has always been in Java app server or app runtime territory. Over the years I've built server-side apps in Perl (CGI and Fast-CGI), PHP, Ruby/Ruby on Rails, and more recently Quarkus with Qute for templating and Renarde for its Servlet-like MVC layer, both excellent. I still reach for JAX-RS/REST for anything API-shaped. I use TypeScript for static-site generation (this blog, the Commonhaus site) and a small flotilla of Obsidian plugins.

I am proficient with Object Oriented principles, design, and analysis. I was the development lead for the WebSphere Application Server Liberty runtime from its initial release through 8.5.5.6.

I've worked in both the Core and Enterprise Expert Groups for the OSGi standards body, and have experience with the OSGi core specification and several of the services defined in the compendium.

Ridiculous things
Active projects
Admonition (Obsidian plugin, TypeScript)
  Adopted from the original author
less than a year
Quarkus Ironsworn (Quarkus + LangChain4j + RAG)
  AI-powered solo Ironsworn RPG, conference demo
less than a year
Soloplay (Quarkus + LangChain4j + RAG)
  AI-powered solo TTRPG assistant, conference demo
1 year
(2025-2026)
Prompt Flow (Obsidian plugin, TypeScript)
  Generate AI content via local or OpenAI-compatible LLMs
1 year
(2025-2026)
Deck Notes (Obsidian plugin, TypeScript)
  Card decks for activities, strategies, or flashcards
1 year
(2025-2026)
Vault as MCP (Obsidian plugin, TypeScript)
  Expose vault contents to LLMs via MCP server
1 year
(2025-2026)
Markdownlint (Obsidian plugin, TypeScript)
  Lint vault files with markdownlint
2 years
(2024-2026)
Slides Extended (Obsidian plugin, TypeScript)
  Fork of Advanced Slides
2 years
(2024-2026)
Commonhaus Foundation Automation (Quarkus GitHub Apps)
  User/org/voting management for the Commonhaus Foundation
2 years
(2024-2026)
Show Whitespace (Obsidian plugin, TypeScript)
  Highlight leading/trailing whitespace
3 years
(2023-2026)
TTRPG Convert CLI (Quarkus CLI + D&D)
  Convert TTRPG source material to Markdown for Obsidian
4 years
(2022-2026)
Snippetor (Obsidian plugin, TypeScript)
  Generate common CSS snippets
4 years
(2022-2026)
Task Collector (Obsidian plugin, TypeScript)
  Gather and mark completed tasks within a note
5 years
(2021-2026)
Ebullientworks (Obsidian theme, Sass)
  Dark/light theme for Obsidian and Obsidian Publish
5 years
(2021-2026)
Day Planner OG (Obsidian plugin, TypeScript)
  Fork of the original Day Planner plugin
6 years
(2020-2026)
Archived projects
Pockets CLI (Quarkus CLI + JPA)
  TTRPG inventory tracking CLI
3 years
(2021-2024)
Monster Combat (Application metrics)
  D&D combat simulator exploring Micrometer/Prometheus metrics
4 years
(2019-2023)
Game On! Text Adventure (Microservices)
  Multiplayer text adventure demonstrating microservices
7 years
(2015-2022)
Proficient Experience
Programming languages
Java (1.2.1 - 24) 30 years
(1996-2026)
Microservices and Cloud Native
Docker
  docker, docker-compose
11 years
(2015-2026)
Know enough to be dangerous Experience
Programming languages
Typescript 5 years
(2021-2026)
Microservices and Cloud Native
Kubernetes
  minikube
7 years
(2018-2025)
Micrometer (1.5.x - current)
  Java metrics library
6 years
(2019-2025)
Prometheus (2.15.x - current) 5 years
(2020-2025)
Quarkus (1.7.x - current)
  Creator of Quarkus Micrometer extension
6 years
(2020-2026)
Front-end markup
CSS 25 years
(2001-2026)
HTML (1.1 - 5.x) 31 years
(1995-2026)
DevOps
GitHub Actions 6 years
(2020-2026)
Now-and-again dabbling Experience
Programming languages
Golang 2 years
(2018-2020)
Rust 2 years
(2020-2022)
Rust bucket Experience
Programming languages
C/C++ 13 years
(1995-2008)
PL/X, PL/1 4 years
(1999-2003)
Perl 15 years
(2001-2016)
PHP (4.0.6 - 4.5.x, 5.2.x) 10 years
(2002-2012)
Ruby / Ruby on Rails 7 years
(2006-2013)
SQL 23 years
(1995-2018)
Velocity 5 years
(2007-2012)
Standards
OSGi (R4, R5)
  DS, ConfigAdmin, Bnd
9 years
(2007-2016)
CORBA (2.3.x-2.6.x)
  GIOP, RMI/IIOP
15 years
(1997-2012)
Applications
Apache (1.3.2x/2.x) 12 years
(2001-2013)
WebSphere Liberty
  Founding contributor / architect / technical lead
12 years
(2005-2017)
WebSphere Application Server for z/OS and OS/390 (4.x - 6.x)
  Component Broker for OS/390 v3.0.2
9 years
(1999-2008)