High-performance web applications solid business logic

I'm Alexandre Martinet, a backend PHP developer specialized in WordPress. I build robust systems: custom plugins, AJAX endpoints, clean architectures. All with no compromises on performance or maintainability.

Let's work together View my résumé
6 years of experience
40+ projects delivered
PHP 8 main stack
Services

What I do

Not a generalist catalogue: four types of projects where I'm regularly involved and genuinely effective.

  • Custom WordPress Plugin

    You have a business need WordPress doesn't cover natively. I design the plugin from scratch: architecture, hooks, admin UI, security and documentation.

    WordPress PHP 8+ WooCommerce

  • Audit & Optimization

    Your site is slow, your queries are exploding in prod, your code is hard to maintain. I identify friction points and intervene surgically.

    MySQL Performance Refactoring

  • Legacy Codebase Rescue

    You inherited a project with no documentation and a degraded architecture. I stabilize, document and modernize without breaking everything.

    Legacy PHP WordPress

  • Agency Backend Support

    You have a complex client project and need a senior backend developer. I join your team remotely, without friction.

    Remote Backend WordPress
Stack technique

PHP & WordPress

Architecture, performance, MySQL, AJAX endpoints and business logic. I build solid, fast foundations that are easy to evolve.

PHP Development

PHP 8+
MVC architecture, OOP, namespaces, Composer
MySQL & MariaDB
Optimized queries, indexing, complex aggregations
AJAX / REST
Lightweight endpoints, controlled payloads, WP nonces
Security
Validation, sanitization, access control, nonces
Performance
Caching, lazy loading, N+1 queries eliminated
Refactoring
Modernizing legacy codebases without regression

WordPress Expert

Custom Plugins
Hooks, filters, CPT, meta boxes, settings API
WooCommerce
Extensions, custom checkout, payment gateways
Business Workflows
Automation, async processing, WP-CRON
Admin & Back UX
Custom admin interfaces, columns, notices
WP Performance
Object cache, transients, optimized DB queries
WordPress as Framework
Decoupled from theme, isolated business logic
Approach

How I work

No rushed code. Every project starts with a listening and analysis phase to deliver something that lasts.

  1. Analysis before code

    I take time to understand the business logic before writing a single line. The right diagnosis prevents 80% of future bugs.

  2. Readable & maintainable code

    Explicit naming, short functions, separation of concerns. Your next developer should be able to take over without pain.

  3. Performance by design

    Audited SQL queries, lean AJAX payloads, strategic caching. Performance is not a bonus, it's a starting constraint.

  • Code reviewed, tested and commented before delivery
  • Compliance with PSR standards and WordPress conventions
  • Technical documentation provided with every project
  • Regular and transparent communication on progress
Experience

Career

  1. PHP / WordPress Developer

    Freelance, Self-employed — Remote

    • Rebuilt and refactored degraded WordPress codebases
    • Custom WooCommerce plugins, secure AJAX endpoints, advanced CPT architectures
    • MySQL optimization: query analysis, indexing, N+1 elimination
    • Embedded with agency teams as backend specialist on complex projects
    • Custom admin interfaces intuitive enough to require zero documentation

  2. Backend PHP / WordPress Developer

    Youdemus (WordPress Agency) — Paris, France

    • WordPress applications: e-commerce, corporate sites, internal tools
    • Custom business plugins, child themes and WooCommerce integrations
    • Technical lead for performance and security on production environments
    • Diagnosed and stabilized legacy codebases

  3. Education

    CEFII — France

    • Web & Mobile Web Developer diploma
Testimonials

They say it better than I do

  • Very satisfied with Alexandre's work, we strongly recommend him.

    ericsonlaboratoire WordPress plugin: store selection with map Verified review via Codeur.com

  • Excellent work, quick responses, I have an entirely positive opinion.

    j9960d09c PHP general assembly management system Verified review via Codeur.com
Availability

Current status

Available

Open to new projects starting now

  • Paris (CET) / Mérida (CST) · UTC−6 to UTC+1
  • 100% remote
  • Response within 24h
Get in touch
Contact

Let's talk

Do you have a demanding PHP or WordPress project? A legacy codebase to modernize? A plugin to build from scratch? Available fully remote.

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