03 — Service
Custom WP Plugin & Theme Engineering
This is the service we provide when you need a real WordPress plugin or theme — WPCS-first code, secure hooks, and admin UX that ships — not mega-plugin spaghetti.
What Plugin & Theme Engineering means here
Custom WP Plugin & Theme Engineering is our fixed-scope service for building installable WordPress products: plugins your customers upload, themes editors can trust, and child themes agencies can white-label.
Security is not optional — nonces, sanitization, escaping, and capability checks are defaults. Architecture stays upgrade-ready so Free vs Pro and licensing hooks do not force a rewrite six months later.
Same craft as our free plugin downloads and themes — try the public work, then hire for the custom build. Serving Melbourne, New Mexico, and worldwide remote.
What this service includes
- WPCS & security defaults: PHP_CodeSniffer-minded PHP, nonces, sanitization, escaping.
- Custom plugins: Feature plugins, membership add-ons, automation, and freemium packages.
- Custom themes & child themes: Block patterns, style guides, and editor-safe layouts.
- Admin UX that ships: Settings screens and Free vs Pro paths operators finish using.
- Upgrade-ready architecture: Room for Pro features and licensing without a full rewrite.
Who hires us for this service
- Founders turning a prototype plugin into a shippable Free/Pro product
- Melbourne agencies needing white-label themes and plugins for clients
- New Mexico nonprofits needing secure, simple plugins staff can run
- Teams replacing brittle custom code with WPCS-clean packages
How we run the engagement
- Discover — feature goals and constraints. Explore Discover.
- Scope — milestones and proposal. Explore Scope.
- Build — plugin/theme code with staging demos. Explore Build.
- Launch — ZIP handoff and optional care. Explore Launch.
Sample work & visuals
Examples from this service
Freemium performance plugin
Free core + Pro matrix with transparent upgrades — same craft as WP Helper Tools products.
Custom membership add-on
Secure roles, gated content, and billing hooks without mega-plugin dependencies.
White-label agency theme
Block patterns and style guide for a Melbourne agency’s client fleet.
Questions about this service
What exactly is Plugin & Theme Engineering?
Building bespoke WordPress plugins and themes with WPCS, security defaults, and upgrade-ready architecture.
How is this different from Plugin & UI/UX Engineering?
Plugin & UI/UX centres on flows and screens. This service centres on the full plugin/theme codebase — with admin UX included when the scope needs it.
Can you match our existing freemium plugins?
Yes — try our public ZIPs first, then we scope custom work to the same standards.
Is this a retainer?
No. Fixed scope and proposal.
Free tools in this lane
Related services
Hire us
Request a Plugin & Theme proposal
This form is only for WP Plugin & Theme Engineering. Tell us goals, stack, and timeline — we reply with a fixed-scope proposal within one business day.
- WPCS-first plugins and themes with secure defaults
- Admin UX that stays maintainable after launch
- Fixed scope — no retainer trap