# WordPress developer

> WordPress developer for custom plugins, Gutenberg themes, API integrations, code takeovers and performance optimisation.

- Page: <https://www.datafirefly.com/en/expertise/wordpress-developer/>
- Language: en
- Last updated: 2026-10-10
- Other languages: [fr](https://www.datafirefly.com/expertise/developpeur-wordpress/index.md), [es](https://www.datafirefly.com/es/pericia/desarrollador-wordpress/index.md), [de](https://www.datafirefly.com/de/fachkompetenz/wordpress-entwickler/index.md), [it](https://www.datafirefly.com/it/competenze/sviluppatore-wordpress/index.md), [pl](https://www.datafirefly.com/pl/ekspertyza/programista-wordpress/index.md), [nl](https://www.datafirefly.com/nl/expertise/wordpress-ontwikkelaar/index.md), [pt](https://www.datafirefly.com/pt/expertise/programador-wordpress/index.md)
- Index: <https://www.datafirefly.com/en/expertise/llms.txt>

WordPress can be adapted to almost anything, as long as the code you add is clean. A plugin written in a hurry slows down the admin, opens a security hole or breaks at the next update. We build and maintain our own WordPress and WooCommerce plugins, distributed in several languages. Your project follows the same rules: code another developer can read, security built in from the start, source code delivered.

## What we build on WordPress

### Custom plugins

Custom content types and fields, Gutenberg blocks, member areas, scheduled tasks, REST endpoints for a mobile app or an internal tool. Our approach is described in detail on the [custom WordPress plugin development](https://www.datafirefly.com/en/expertise/wordpress-plugin-developer/) page.

### Themes and blocks

Block theme or child theme, reusable patterns, blocks dedicated to your content. We avoid heavy page builders when the block editor is enough, because they drag down Core Web Vitals.

### API integrations

CRM, ERP, email marketing tool, payment provider, translation service. Remote calls are queued, their errors are logged, and secrets stay out of the database.

### Takeover and security

A site inherited from an agency, an abandoned plugin, a hacked site. We audit, clean up and bring everything up to standard, with a costed action plan before we touch the code.

## Our WordPress development rules

- **Security by default**: nonces, capability checks, output escaping, prepared statements.
- **Controlled queries**: no queries inside loops, object cache where it helps, transients cleared at the right time.
- **Documented hooks** so your team can extend the plugin without modifying it.
- **Built-in translations**: translatable strings and Polylang and WPML compatibility.
- **Testing on a copy** of your site before going live.

## What affects the price

Our quotes start at €1,200 and stay fixed once the scope is approved:

| Factor | Impact |
| --- | --- |
| Interface | A settings page is quick; a full management screen with lists and filters takes several days. |
| Integrations | Each external API adds error handling, tests and documentation. |
| Existing setup | Starting from a healthy base is faster than fixing a site loaded with competing plugins. |
| Languages | A multilingual site needs translatable strings and tests for each language. |

## Real examples

A few plugins from our catalogue, designed and maintained by the team:

- [DF Translate Pro](https://www.datafirefly.com/en/product/df-translate-pro/): large-scale multilingual translation for WordPress and WooCommerce sites.
- [Paginated pages SEO](https://www.datafirefly.com/en/product/paginated-pages-seo-wordpress-h1-title-meta-yoast-elementor/): automatic H1, title and meta with Yoast and Elementor.
- [Two-factor authentication](https://www.datafirefly.com/en/product/datafirefly-2fa-fortress/) for WordPress and WooCommerce.
- [WebP and AVIF Pro](https://www.datafirefly.com/en/product/webp-avif-pro/): image conversion and compression.

## What merchants say

A merchant who uses our plugins on her WordPress site:

- “Very easy installation!” _Tina (tapis-logo.com), Google Reviews Carousel plugin for WordPress (review translated from French)_
- “Very good module, creating a quote and converting it is really easy.” _Tina (tapis-logo.com), WooCommerce Quotes plugin (review translated from French)_ ([see the product page](https://www.datafirefly.com/en/product/df-woo-quotes-woocommerce-quotes/))

To date, every review published on our product pages is rated 5 out of 5.

## Who works on your project

You deal directly with the two co-founders, with no account manager and no subcontracting. Support replies within one business day, in French, English, Spanish or German.

- **Alexandre Navaeian** has run his own online stores for more than ten years, first on PrestaShop, then on Shopware 6 and WooCommerce, in B2B furniture, e-books and cosmetics. He designs and codes the catalogue modules: PrestaShop 1.7 to 9 architecture, Shopware 6 plugins, HPOS-compatible WooCommerce extensions, payment and ERP integrations. [LinkedIn profile](https://www.linkedin.com/in/alexandre-navaeian-43857171/)
- **Sasha El Mogherbi** handles digital marketing, server-side tracking, attribution and consent compliance (GDPR). He is certified in Google Search Ads 360, Display & Video 360 and Campaign Manager 360. [LinkedIn profile](https://www.linkedin.com/in/sasha-el-mogherbi/)

Our method and background are described on the [About us](https://www.datafirefly.com/en/about-us/) page.

## Going further

For an online store, see our [WooCommerce developer](https://www.datafirefly.com/en/expertise/woocommerce-developer/) and [WordPress / WooCommerce site creation](https://www.datafirefly.com/en/expertise/woocommerce-store-creation/) pages. Our [WordPress plugins](https://www.datafirefly.com/en/categorie-produit/wordpress-plugins/) catalogue also covers SEO, security and multilingual sites.