Collin D. Johnson
Web design, development, and AI experiments.
Web designer and developer in American Fork, Utah. I run Virdis.io (B2B SaaS sites) and Patchwork Sites (small-business sites in a week).
Recent experiments
MLX Fine-Tuning Kit
May 2026A reusable playbook for fine-tuning open-source LLMs locally on Apple Silicon — templates, worked examples, and the workflow I actually use.
LLM VRAM Calculator
May 2026Estimate whether a given language model will fit in your GPU's VRAM for inference or fine-tuning.
Recent projects
Handoff AI
Rebuilding how residential contractors estimate, bid, and run jobs. Marketing site and on-page SEO.
Gradari
Marketing site for a lead-generation agency — design, build, and on-page SEO.
IndeHR
Website design, development, and third-party integrations for an HR platform.
The Aurora Lights
Marketing site for an outdoor lighting company — design, build, and on-page SEO.
MeterNet USA
Website design, development, and on-page SEO for a utility submetering provider.
Student Doctor Housing
Platform configuration, layout and navigation, and listing system setup with integrations for a medical-housing marketplace.
Golden State Group
Discovery, design, WordPress development, and on-page SEO for a home services brand.
Torch Dental
WordPress development with conversion rate optimization and A/B testing for a dental supply HealthTech brand.
Blaque Diamond Wheels
Ongoing WordPress development, bug fixes, and feature implementation for an automotive wheels brand.
Hona
Website design, development, and testing/QA for a LegalTech client-experience platform.
Greta's Guns
Website redesign and WordPress + WooCommerce development with full e-commerce configuration for an FFL retailer.
Certifications
Webflow CMS Level 1 Certification
Webflow
Webflow Layout Level 2 Certification
Webflow
Webflow Layout Level 1 Certification
Webflow
Webflow Expert Partner Certification
Webflow
Google My Business
Google
Credential ID 69208259