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WordPress Development & Optimisation

Your WordPress Site Looks Professional. But Is It Actually Engineered For Performance?

Most WordPress sites get built once, then maintained. Plugins added when needed. Themes customised through trial and error. It works well enough.

Until you need reliable measurement. Accessible navigation. Sustainable performance under traffic spikes. Then “well enough” becomes expensive limitations nobody anticipated.

We build WordPress sites as integrated systems. Development and analytics expertise combined from day one. Custom themes that load fast and track accurately. Architecture that scales without breaking. Security hardened beyond plugin defaults.

Let us review your WordPress requirements and we’ll show you what proper engineering delivers.

What Wonderful WordPress Builds Look Like

Most WordPress builds prioritise launch speed over long-term capability. Agencies install popular plugins, customise themes through the visual editor, and call it done when it looks right in Chrome.

Then you discover tracking breaks when users decline cookies. Page speed degrades with every plugin update. Accessibility failures exclude 15% of your audience. The site works until you need it to perform.

Here’s what a wonderful WordPress build delivers:

  • Custom theme built for speed (sub-2-second loads, optimised asset delivery, minimal HTTP requests)
  • Database queries structured for efficiency so response times stay consistent under traffic
  • Caching strategies preserving measurement accuracy whilst maintaining performance
  • Data layer architecture integrated during development, not retrofitted after launch
  • Custom events capturing business-specific interactions (calculator completions, comparison tools, account creations)
  • Cross-domain tracking configured at DNS level so customer journeys don’t fragment
  • WCAG 2.1 AA standards met through semantic HTML and proper ARIA implementation
  • Keyboard navigation and screen reader compatibility tested throughout development
  • Accessible components generating cleaner analytics data (consistent interaction patterns, reliable event tracking)
  • Custom authentication workflows, database security configurations, and server hardening beyond basic plugin protections
  • Regular security audits identifying vulnerabilities before they’re exploited by automated attacks
  • Staging environments for safe testing ensuring production stability without risk

From Requirements to Launch in Twelve Weeks

Get in Touch

Discovery Call

Reach out, request a callback and we’ll arrange an initial discovery call. We get every project is unique so we like to understand the current state of play from you. However, below details our standard process for our WordPress Development & Optimisation service.

Get in Touch

Discovery Call

Reach out, request a callback and we’ll arrange an initial discovery call. We get every project is unique so we like to understand the current state of play from you. However, below details our standard process for our WordPress Development & Optimisation service.

Week 1-3

Discovery & Architecture

Requirements mapping connecting business objectives to technical capabilities. Information architecture planning and measurement strategy defined together. Detailed technical specification, project roadmap, and wireframes documenting structure, integrations, success metrics, and user experience approach.

Week 1-3

Discovery & Architecture

Requirements mapping connecting business objectives to technical capabilities. Information architecture planning and measurement strategy defined together. Detailed technical specification, project roadmap, and wireframes documenting structure, integrations, success metrics, and user experience approach.

Week 4-8

Development & Integration

Custom theme development with performance and accessibility built in. Plugin configuration and custom functionality implementation. Data layer architecture and GTM integration ensuring accurate tracking from launch. Progressive staging environment testing across devices, browsers, and user scenarios.

Week 4-8

Development & Integration

Custom theme development with performance and accessibility built in. Plugin configuration and custom functionality implementation. Data layer architecture and GTM integration ensuring accurate tracking from launch. Progressive staging environment testing across devices, browsers, and user scenarios.

Week 9-11

Testing & Optimisation

Comprehensive performance audits ensuring sub-2-second loads and passing Core Web Vitals. Accessibility testing with screen readers and keyboard navigation verification. Security hardening, vulnerability assessment, and penetration testing. Analytics verification and user acceptance testing confirming accurate data capture.

Week 9-11

Testing & Optimisation

Comprehensive performance audits ensuring sub-2-second loads and passing Core Web Vitals. Accessibility testing with screen readers and keyboard navigation verification. Security hardening, vulnerability assessment, and penetration testing. Analytics verification and user acceptance testing confirming accurate data capture.

Week 12

Launch & Training

Production deployment with DNS configuration and SSL certificate setup. Comprehensive team training covering WordPress administration, content workflows, and analytics interpretation. Complete documentation including architecture decisions, maintenance procedures, security protocols, and troubleshooting guides.

Week 12

Launch & Training

Production deployment with DNS configuration and SSL certificate setup. Comprehensive team training covering WordPress administration, content workflows, and analytics interpretation. Complete documentation including architecture decisions, maintenance procedures, security protocols, and troubleshooting guides.

Complete!

What Happens Next?

Your site performs reliably because it’s engineered as a system. Content updates happen confidently. Measurement stays accurate. With solid foundations, you can layer on sophisticated capabilities like personalisation and predictive analytics.

Complete!

What Happens Next?

Your site performs reliably because it’s engineered as a system. Content updates happen confidently. Measurement stays accurate. With solid foundations, you can layer on sophisticated capabilities like personalisation and predictive analytics.

What Default WordPress Builds Miss

The Cost of Waiting

Every month with an unengineered WordPress site:

A basic WordPress setup gives you a website. Proper WordPress engineering gives you a system.

Don’t wait around expecting plugin assemblies to perform like engineered platforms. Get in touch, let’s map where you are and where you need to go to get the most out of WordPress.

Contact Form

The team is friendly, approachable and their knowledge and experience means that they genuinely understand what we’re trying to achieve.

– Richard S, Head of Organic Performance at Betfred

WordPress Development & Optimisation FAQs

How long does WordPress development take?

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Development timelines range from 8-16 weeks depending on complexity and custom requirements. A brochure site with standard functionality takes 8-12 weeks. E-commerce sites with custom checkout flows or membership platforms with complex user journeys extend to 12-16 weeks.

Week 1-3 is discovery and architecture definition. We map your requirements, define information architecture, and create technical specifications before any development begins. Weeks 4-11 are development, integration, and comprehensive testing. Week 12 (or weeks 12-16 for complex builds) handles launch coordination and team training.

We don’t rush launches. Getting architecture right matters more than meeting arbitrary deadlines. Solid foundations let you build sophisticated capabilities later without rebuilding core systems.

Can you work with our existing WordPress site?

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Yes. We audit your current implementation, identify performance bottlenecks and security vulnerabilities, then optimise architecture without rebuilding unnecessarily.

Typical optimisation work includes performance engineering (caching strategies, asset delivery, database queries), security hardening (authentication workflows, plugin audits, server configuration), measurement integration (data layer implementation, GTM setup, analytics configuration), and accessibility improvements (semantic HTML, ARIA patterns, keyboard navigation).

If your current site has fundamental architectural limitations preventing proper performance or measurement, we’ll recommend targeted rebuilds focusing on problem areas rather than complete site reconstruction.

Do you build custom WordPress plugins?

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Yes, when custom functionality serves your business requirements better than adapting existing plugins.

We develop custom plugins for unique workflows (approval processes, calculation tools, custom post types), integrations not served by existing solutions (proprietary APIs, legacy systems, custom data structures), and performance-critical functionality where plugin overhead creates unacceptable load times.

Custom plugin development adds time to project schedules depending on complexity. We only recommend custom development when existing plugins genuinely can’t meet requirements or when plugin overhead significantly impacts performance.

Will our WordPress site be accessible?

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Yes. We build to WCAG 2.1 AA standards as baseline, not optional enhancement.

Accessibility implementation includes semantic HTML structure (proper heading hierarchy, landmark regions, form labelling), ARIA patterns for complex interactions (modals, accordions, dynamic content), keyboard navigation for all interactive elements, and screen reader compatibility verified through testing with actual assistive technologies.

Accessible sites reach wider audiences (15% of UK population has disabilities) whilst generating cleaner analytics data. Consistent interaction patterns make measurement more reliable. Proper HTML structure improves SEO performance.

We also provide accessibility audits for existing sites if you’re concerned about current compliance.

Do you handle WordPress hosting?

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We recommend hosting but don’t manage it directly. Our focus is development and optimisation, not infrastructure maintenance.

We specify hosting requirements based on your traffic patterns, performance needs, and security concerns. For most clients, we recommend managed WordPress hosting (WP Engine, Kinsta, Flywheel, DreamHost, Fasthosts) offering automatic backups, security monitoring, and staging environments. We also have a hosting partner we can refer you to if needed.

For complex requirements (high traffic, custom server configurations, regulatory compliance), we’ll specify VPS or dedicated server requirements. We configure your chosen hosting environment for optimal performance and security during site launch.

Will you train our team to manage WordPress?

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Yes. Training is included in every development project, available as both live sessions and recorded documentation.

Training covers content publishing workflows (using the block editor, managing media, maintaining consistent formatting), WordPress administration (plugin updates, user management, backup verification), and analytics interpretation (understanding GA4 reports, identifying conversion patterns, troubleshooting tracking issues).

We structure training around your team’s actual responsibilities. Content editors get focused training on publishing workflows. Marketing teams learn analytics navigation and interpretation. Technical staff receive architectural documentation and troubleshooting guides.

Recorded training sessions remain available so new team members can onboard without requiring our time.

Do you provide ongoing WordPress support?

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Yes, through monthly retainers for maintenance and support.

Ongoing support includes plugin updates and compatibility testing, security monitoring and patch management, performance monitoring with monthly optimisation, backup verification and recovery testing, and priority support for troubleshooting and urgent fixes.

We also offer strategic support adding content strategy guidance, analytics review and optimisation recommendations, A/B testing implementation and analysis, and quarterly technical audits identifying improvement opportunities.

Support retainers ensure your WordPress site maintains performance, security, and measurement accuracy over time. Technology evolves. Requirements change. Ongoing support means your site evolves with your business.

Can you integrate WordPress with our existing tech stack?

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Yes. Integration capability is core to our approach.

Common integrations include marketing automation platforms (HubSpot, Marketo, Pardot), CRM systems (Salesforce, Microsoft Dynamics, custom solutions), e-commerce platforms (Shopify, WooCommerce, custom checkout flows), analytics tools (GA4, Adobe Analytics, custom tracking), and custom APIs connecting proprietary systems.

We architect integrations considering data flow, authentication requirements, and failure handling. Webhook implementations for real-time sync. Scheduled jobs for batch processing. Proper error handling so integration failures don’t break core functionality.

Integration complexity adds 1-4 weeks to project timelines depending on technical requirements and API documentation quality.

Why choose Wonder for WordPress development?

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We combine development and analytics expertise. This integration means tracking architectures that work with privacy controls, performance optimisations preserving measurement accuracy, and data implementations informing technical decisions from day one.

Our development team understands conversion tracking requirements. Our analysts inform technical architecture. You don’t coordinate between agencies wondering who’s responsible when measurement breaks or performance degrades. We engineer solutions considering how development decisions affect measurement capability and how tracking requirements impact performance.

This integrated approach prevents the coordination overhead and finger-pointing that happens when different teams handle development and analytics separately. One team. One architecture. One system engineered for both performance and measurement.

Do you work with WordPress e-commerce (WooCommerce)?

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Yes. WooCommerce development includes custom theme creation optimised for conversion, checkout flow engineering reducing friction and cart abandonment, payment gateway integration and PCI compliance configuration, advanced product filtering and search functionality, and comprehensive e-commerce tracking (product views, add to cart, purchase completion, revenue attribution).

WooCommerce projects typically run 10-14 weeks given additional complexity around payment processing, inventory management, and e-commerce analytics requirements.

We engineer WooCommerce sites for performance under traffic spikes (sales events, product launches) whilst maintaining accurate transaction tracking and revenue attribution across marketing channels.

Can you migrate our existing site to WordPress?

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Yes. Migration projects include complete content audit and structure mapping, custom theme development matching your brand whilst improving performance, content migration with URL preservation and redirect implementation, plugin selection and configuration replacing existing functionality, and comprehensive testing ensuring nothing breaks during transition.

Migration timelines extend 2-4 weeks beyond standard development for content migration complexity, data transformation requirements, and extensive redirect testing.

We maintain your existing site live during migration. Only when the new WordPress build is comprehensively tested do we coordinate the final cutover, typically scheduled during low-traffic periods.

What happens if we’re not happy with the build?

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We structure development in phases with review checkpoints ensuring alignment before proceeding.

After discovery (weeks 1-2), we present complete technical specifications and design concepts. You review and approve before development begins. Mid-project (around week 4-5), we provide staging environment access for preliminary review and feedback incorporation.

If architectural concerns emerge, we address them during development phases when changes are manageable, not after launch when modifications become expensive. Our phased approach with multiple review points prevents misalignment from compounding.

We also include 30 days post-launch support for bug fixes and minor adjustments ensuring production environment performs as staging demonstrated.

Do you offer headless WordPress development?

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Yes, for applications requiring WordPress content management with custom frontend frameworks.

Headless WordPress implementations separate content management (WordPress backend) from presentation layer (React, Vue, Next.js frontends). This architecture suits applications needing sophisticated user interfaces, mobile apps requiring API access to WordPress content, or multi-channel publishing (web, mobile, kiosk) from single content source.

Headless projects extend timelines 4-6 weeks beyond traditional WordPress builds for API development, frontend framework implementation, and integration complexity.

We only recommend headless WordPress when business requirements genuinely justify additional complexity and cost.

How do you handle WordPress security?

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Security implementation includes server hardening (firewall configuration, file permissions, database access controls), authentication strengthening (two-factor authentication, password policies, session management), plugin security (regular audits, minimal installation, update monitoring), backup strategy (automated daily backups, offsite storage, recovery testing), and monitoring (intrusion detection, uptime monitoring, security patch alerts).

We also conduct security audits quarterly identifying new vulnerabilities and implementing fixes before exploitation. Security isn’t one-time configuration. Threats evolve. Regular audits ensure your WordPress installation stays protected.

For sites handling sensitive data or operating in regulated industries, we implement additional security measures including SSL/TLS configuration, data encryption, and compliance documentation supporting regulatory requirements.

Can you optimise our WordPress site for Core Web Vitals?

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Yes. Core Web Vitals optimisation for WordPress includes theme performance engineering (minimal JavaScript, efficient CSS, optimised rendering), image and asset optimisation (next-gen formats, lazy loading, responsive delivery), caching strategy (page caching, object caching, CDN integration), database query optimisation (reducing queries, indexing strategy, caching repetitive calls), and plugin performance audit (removing unnecessary plugins, optimising essential ones, replacing heavy plugins with lightweight alternatives).

Most WordPress sites can achieve passing Core Web Vitals (LCP < 2.5s, INP < 200ms, CLS < 0.1) through systematic optimisation. We measure performance throughout, not just at the end, ensuring optimisations actually improve metrics.

More Work

See Case Studies

Racehorses in action, featured on a case study on Wonder Agency's custom WordPress plugin development for Betfred case study

From Post to Page

40

live results updated a day on average

1

minute updates for all UK horse racing results delivered to the site

A car in a shipping container, featured on a case study on Wonder Agency's WordPress website build for Jenkar Shipping

Navigating a New Look

100%

increase in website views

50%

increase in engagement time per user

Making Websites Wonderful.