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.
Available · 100% remote
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.
0
years of experience
0+
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.
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.
Legacy Codebase Rescue
You inherited a project with no documentation and a degraded architecture. I stabilize, document and modernize without breaking everything.
Agency Backend Support
You have a complex client project and need a senior backend developer. I join your team remotely, without friction.
Backend
PHP Development
Architecture, performance, MySQL, AJAX endpoints and business logic. I build solid, fast foundations that are easy to evolve.
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
CMS / Framework
WordPress Expert
Custom plugins, WooCommerce, workflows, admin and refactoring. WordPress used as a real framework, without sacrificing performance.
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.
Analysis before code
I take time to understand the business logic before writing a single line. The right diagnosis prevents 80% of future bugs.
Readable & maintainable code
Explicit naming, short functions, separation of concerns. Your next developer should be able to take over without pain.
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
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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
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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
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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.
Excellent work, quick responses, I have an entirely positive opinion.
Availability
Current status
Available
Open to new projects starting now
- Paris (CET) / Mérida (CST) · UTC−6 to UTC+1
- 100% remote
- Response within 24h
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.