Gutenberg Development

Custom Gutenberg Blocks.
Built by a React Developer.

I build custom Block Editor experiences that give your content team real power. No page builders. No fragile workarounds. No developer needed every time they update a page.

Your editors shouldn't need a developer to update content.

Most WordPress sites end up in one of two places: editors locked into rigid templates who can't change anything without filing a ticket, or editors given so much freedom that they break the design every time they touch a page.

Custom Gutenberg blocks solve both problems. Purpose-built editing tools that look and feel native to WordPress, protect the design system, and let non-technical teams publish confidently. That's what I build.

Block Development Services

Everything your content team needs to publish confidently, built directly into the Block Editor.

Custom Content Blocks

Purpose-built blocks for your specific content types. Hero sections, testimonials, feature grids, team profiles, CTAs. Designed to feel native to WordPress.

Dynamic Blocks

Blocks that pull live data: latest posts, events, API integrations, filtered content feeds. Server-side rendered with PHP, cached for performance.

Editorial Workflows

Block patterns, locked templates, and content-only editing modes that protect layout integrity while giving editors freedom where it matters.

Block Editor Extensions

Custom sidebar panels, toolbar controls, and editor plugins that add functionality to the editing experience itself, not just the page content.

Existing Block Customization

Extending core blocks with custom styles, variations, and additional controls. Add functionality to what WordPress already provides without reinventing the wheel.

theme.json Integration

Design system configuration that connects your blocks to a unified color palette, typography scale, and spacing system. Editors pick from your approved options.

Enterprise Block Development at Scale

At KHM Agency, I build custom Gutenberg blocks and Block Editor extensions for major destination marketing platforms. Sites like Discover Atlanta, The Palm Beaches, Buffalo Niagara, and others. These are content-heavy sites where non-technical marketing teams need to build complex destination pages with embedded maps, event feeds, curated content sections, and more.

I built the blocks that let them do it. No developer bottleneck. Just clean, purpose-built editorial tools across 10+ regional platforms.

Before that, 15 years of WordPress development across 150+ projects. Custom plugins, themes, REST API integrations, and full-stack builds for clients ranging from Cisco to the National Park Service.

Under the Hood

The real Block API. Not the YouTube tutorial version.

Block API

  • block.json API v3 registration
  • Edit/Save component architecture
  • Static and dynamic (PHP-rendered) blocks
  • Block deprecations and content migration
  • Block variations, transforms, and styles
  • Block patterns and pattern categories
  • InnerBlocks with template locking
  • Parent/ancestor block relationships
  • Block hooks (WP 6.5+)

Editor Integration

  • @wordpress/data custom Redux stores
  • useSelect / useDispatch for cross-block communication
  • InspectorControls, BlockControls, custom SlotFills
  • JS filters and hooks (@wordpress/hooks)
  • Higher-order components for extending core blocks
  • registerPlugin for custom sidebar panels
  • PluginDocumentSettingPanel, PluginPostStatusInfo

Rendering & Performance

  • Server-side rendering with render.php
  • Fragment caching with transients
  • Optimized WP_Query (no_found_rows, selective cache priming)
  • get_block_wrapper_attributes() for consistent output

Modern WordPress

  • Interactivity API (WP 6.5+) for lightweight frontend interactivity
  • theme.json v3 design system integration
  • Full Site Editing compatibility
  • wp-scripts build toolchain

Core Stack

  • React (hooks, context, component architecture)
  • TypeScript / JavaScript
  • PHP (OOP, autoloading, REST API endpoints)
  • WCAG 2.0+ AA / Section 508 accessibility

Built for Agencies and Teams

I work best as a technical partner for agencies and organizations that need custom block development but don't have a dedicated Gutenberg specialist in-house. You handle the design and client relationship. I handle the block builds.

An agency building WordPress sites where the editorial experience matters

A publisher or media company that needs custom newsroom tools in the block editor

A university, nonprofit, or government org with non-technical content editors

A WordPress shop that needs to level up from plugins to native blocks

Let's build something.

Have a project that needs custom block development? I'd love to hear about it.

Or reach out directly at:

[email protected]