Our Services
Founded in 2010, Vashon Software focuses on innovative solutions to facilitate our customers’ goals and mission. We strive to use cutting-edge technologies enabling agile projects that are creative, modular, and simple — built to fit today’s objectives and grow for tomorrow’s.
John Cornelison, principal architect and developer, brings 30+ years of experience across healthcare IT, emergency management, and commercial software to every engagement.
Small & Local Projects
Need something smaller? I take on one-off and short-term engagements for local businesses, nonprofits, and individuals:
- Website refresh or fix — Update an existing site, fix what's broken
- New small site — One-page to five-page business or portfolio site
- Tech consult — An hour or two to get your project pointed in the right direction
- Custom script or tool — Automate something that's wasting your time
- Emergency / off-hours help — When something breaks and you need it fixed fast
Reach out and describe what you need. Most small projects get a same-week response.
Contact JohnWebsites
Modern low-JS, static mobile-first sites with proven 100 PageSpeed scores for Performance, Accessibility, Best Practices & SEO.
Performance-First Static Sites
Reliable Svelte and Angular component-focused solutions using Astro, Eleventy, Hugo, Decap, Nunjucks, HTML5, CSS3+, TypeScript, and Markdown — with modern versioning & CI/CD pipelines.
Creative Design & User Editable
Creative design that your team can manage and update without developer involvement — all at an economical price.
Example Sites
VashonSoftware.com, eoc.online, Mesh101.com, VashonMesh.com, MadeInParadiseRocks.com, VashonTaiChi.com, VashonMassage.com, Cornelisons.com, VashonBePrepared, VashonEOC, and many others over the years.
Crafted Software
Custom applications engineered with modern architectures and technologies to meet your exact requirements.
Microservices & Containerized Systems
Microservices-based architectural design on containerized systems — scalable, maintainable, and built for long-term operation.
Custom Applications
Bespoke software using C#, TypeScript, Python, C++, pnpm, SQL & NoSQL — designed around your workflows and delivered with clean, maintainable code.
Artificial Intelligence
Small Language Models (SLMs) applied to GIS & Geomatics, IoT, and domain-specific problem solving — practical AI without the overhead.
Secure IoT Development
End-to-end IoT solutions with security designed in from the ground up — from edge devices to data pipelines.
Data Analytics
Data analytics solutions deployed across a variety of cloud platforms — turning raw data into actionable insight.
Healthcare IT
Deep experience in health information exchange, clinical systems integration, and federal health architecture — including Epic gateway (via InterSystems HealthShare/MultiCare), CONNECT, HL7, C32/CCD, and AHLTA.
Disaster Technology
Mission-critical software for Emergency Operations Centers — resilient by design, reliable when it matters most.
Emergency Operations Centers
Software solutions focused on small & international EOCs — systems that are NOT reliant on the cloud but can leverage those abilities when the Internet is available, even intermittently.
ICS / NIMS / NRF Based Solutions
Incident Command System (ICS), National Incident Management System (NIMS) & National Response Framework (NRF) compliant platforms for structured emergency response.
Emergency Response Systems
Coordination tools and communication platforms built for high-stress, high-stakes situations where reliability is non-negotiable.
Data Recovery Solutions
Automated backup pipelines and recovery workflows ensuring your data and services can be restored quickly after any incident.
Risk Assessment Tools
Tools for identifying, evaluating, and mitigating risks before they become incidents — built for operational teams in the field.
Have a project in mind?
We'd love to hear about it. Reach out and let's talk about what we can build together.
Get in Touch