# PrestaShop developer

> PrestaShop developer for custom modules, bug fixes, performance, migrations and maintenance on PrestaShop 1.7, 8 and 9.

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

Every PrestaShop store ends up needing a developer: a business rule the back office cannot handle, a module that breaks after an update, pages that slow down, a migration to PrestaShop 9 to prepare. At DataFirefly, that developer is the team that writes and maintains nearly 300 PrestaShop modules published in our own catalogue. You talk directly to the person who writes the code, with a fixed quote before work starts.

## What a PrestaShop developer does for you

### Build the module you are missing

Pricing logic specific to your business, an extra field at checkout, a back-office screen for your logistics team, a sync with an ERP: when no off-the-shelf module covers the need, we build it. Our method is described in detail on the [custom PrestaShop module development](https://www.datafirefly.com/en/expertise/prestashop-module-developer/) page.

### Fix and take over existing code

A 500 error after an update, a module whose vendor has disappeared, conflicting overrides, code left behind by a previous provider. We reproduce the problem on a copy of the store, fix it at the source and document what was changed.

### Speed up the store

Slowness rarely comes from a single place: queries repeated inside a loop, statistics tables weighing several gigabytes, modules loading their scripts on every page, uncompressed images. We measure before we touch anything. See also our [PrestaShop Core Web Vitals optimisation](https://www.datafirefly.com/en/expertise/prestashop-core-web-vitals-optimization/) page and the article on [PrestaShop databases that keep growing](https://www.datafirefly.com/en/2026/06/14/prestashop-database-ballast-tables-cleanup-retention-2026/).

### Get ready for PrestaShop 9

PrestaShop 9 changes the Symfony version, the product page and part of the admin controllers. Before migrating, we inventory your modules and tell you which ones carry over, which ones need porting and which ones to replace. The details are on the [PrestaShop 8 to 9 migration](https://www.datafirefly.com/en/expertise/prestashop-8-to-9-migration/) page.

### Connect PrestaShop to your tools

ERP, CRM, logistics provider, payment provider, e-invoicing platform. Exchanges run through scheduled tasks and are logged, so the store does not slow down when the remote tool responds badly and a sync can be replayed. Dedicated pages: [Sage connector](https://www.datafirefly.com/en/expertise/sage-prestashop-connector/) and [Cegid connector](https://www.datafirefly.com/en/expertise/cegid-prestashop-connector/).

## Our PrestaShop development rules

- **Hooks and services rather than overrides**, so the code survives updates and does not fight with your other modules.
- **PrestaShop 8 and 9 compatibility** for admin controllers, the product page and security tokens.
- **Multistore and multilingual** support from the first version.
- **Parameterised SQL queries and escaped data**, including in templates.
- **Tests on a copy of your store** before anything goes live, never directly on the live site.

## What affects the price

Our quotes start at €1,500 and stay fixed once the scope is approved. Four factors drive the amount:

| Factor | Impact |
| --- | --- |
| Area affected | A display block is quick; the cart, taxes or carriers need more testing. |
| Admin interface | A simple setting costs little; a screen with lists, filters and bulk actions takes several days. |
| External tool | A documented API connects quickly; a file-based exchange requires more checks. |
| Versions to support | Targeting PrestaShop 9 alone is faster than covering 1.7, 8 and 9; multistore adds more cases. |

## Real examples

Our catalogue modules were born from real store needs. They give you an idea of what we can build:

- [AJAX faceted filters](https://www.datafirefly.com/en/product/ajax-faceted-filters-prestashop/) with a price slider and clean, SEO-friendly URLs.
- [Instant search](https://www.datafirefly.com/en/product/live-search-prestashop-suggestions-analytics-conversions/) with synonyms, typo tolerance and search statistics.
- [Step-by-step product configurator](https://www.datafirefly.com/en/product/product-configurator-prestashop/) with price impact.
- [301 redirect manager](https://www.datafirefly.com/en/product/301-redirects-manager-prestashop/) with 404 error capture.
- [Encrypted backup](https://www.datafirefly.com/en/product/prestashop-backup-module-8-9-dfbackup/) of the database and files, with tested restores.

## What merchants say

Merchants who use our modules on their PrestaShop store:

- “Alexandre has been incredibly responsive, professional, and helpful throughout the installation and testing process.” _jingjinghao6, PrestaShop 9 store running Creative Elements, AJAX Faceted Filters module_ ([see the product page](https://www.datafirefly.com/en/product/ajax-faceted-filters-prestashop/))
- “Exceptional technical support, fast, available and knowledgeable.” _Giuliano, PrestaShop Mega Menu module (review translated from Italian)_
- “Really good search engine for PrestaShop, the analytics data is genuinely useful.” _LD Medical (ld-medical.fr), PrestaShop Live Search module (review translated from French)_ ([see the product page](https://www.datafirefly.com/en/product/live-search-prestashop-suggestions-analytics-conversions/))

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

Before handing us a project, you can start with a [PrestaShop audit](https://www.datafirefly.com/en/expertise/prestashop-audit/), browse our [PrestaShop module catalogue](https://www.datafirefly.com/en/categorie-produit/prestashop-modules/) or read our article on choosing between an [off-the-shelf module or custom development](https://www.datafirefly.com/en/2026/08/24/off-the-shelf-prestashop-module-or-custom-development-how-to-decide/). For long-term support, see [PrestaShop maintenance](https://www.datafirefly.com/en/expertise/prestashop-maintenance/).