PrestaShop developer

PrestaShop developer

The developers behind nearly 300 PrestaShop modules, working on your store.

Custom module, blocking bug, slow store, migration to PrestaShop 9: you talk directly to the people who write the code. Fixed quote within 24h, source code delivered, 12 months of updates.

  • PrestaShop Certified Agency 2026
  • PrestaShop Expert Certification — Core Skills
  • PrestaShop Expert, level 3
Certifications

Officially certified by PrestaShop.

DataFireFly is a PrestaShop Certified Agency for 2026 and a level 3 PrestaShop Expert, and our team holds the PrestaShop Expert certification (Core Skills). All three are awarded by PrestaShop itself.

About us

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 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 page and the article on PrestaShop databases that keep growing.

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 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 and Cegid connector.

Our PrestaShop development rules

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:

What merchants say

Merchants who use our modules on their PrestaShop store:

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.

Our method and background are described on the About us page.

Going further

Before handing us a project, you can start with a PrestaShop audit, browse our PrestaShop module catalogue or read our article on choosing between an off-the-shelf module or custom development. For long-term support, see PrestaShop maintenance.

How we can help

Custom module

The business rule no off-the-shelf module handles, built without core overrides.

Fixes and takeovers

Production bug, abandoned module, code inherited from another provider: diagnosis, then fix.

Performance

Core Web Vitals, SQL queries, cache, page weight and table size.

Migration to PrestaShop 9

Module audit, porting and full acceptance testing before the switchover.

Connectors

ERP, CRM, logistics provider, payment: logged exchanges that can be replayed.

Maintenance

Updates, backups, monitoring and small improvements for a fixed monthly fee.

Process

How we work

  1. 01

    20-minute scoping call

    A call to understand your needs, then a written scope for you to approve.

  2. 02

    Fixed quote within 24h

    Fixed price and a committed delivery date, with no open-ended hourly billing.

  3. 03

    Development and testing

    Tests on our environments, then on your staging copy.

  4. 04

    Delivery and follow-up

    Source code, documentation and 12 months of compatibility updates.

Tech stack

PHP 8.1+ PrestaShop 1.7 PrestaShop 8 PrestaShop 9 Symfony Smarty Twig Doctrine MySQL 8 / MariaDB Hummingbird

Some of our modules

Built and maintained by the same team that handles your custom work.

All modules
Go deeper

Guides & documentation.

Documentation

Ready when you are.

No pitch — just an honest assessment of your project in 20 minutes.

Discuss your project

Frequently asked questions

How much does a PrestaShop developer cost?

We work on a fixed-price basis, from €1,500 for a module or a defined project. The fixed quote arrives within 24h of a 20-minute scoping call and does not change once the scope is approved. For ongoing support, a monthly maintenance plan is a better fit.

Do you work on PrestaShop 1.7, 8 and 9?

Yes. New development targets PrestaShop 8 and 9 with PHP 8.1 or higher. On a store still running 1.7, we handle fixes and maintenance, and we prepare the migration when it becomes necessary.

Can you take over a store built by another provider?

Yes, it happens often. We start with an audit of the code and installed modules, then give you a prioritised, costed list of fixes before any work begins.

How long does a job take?

A simple fix takes a few days. A custom module usually takes two to four weeks, an ERP connector longer. The timeline is written into the quote.

Do I own the source code?

Yes. You receive the installable module, the full source code and the documentation, with no licence key or restrictions. You remain free to hand further work to another team.

Do you use overrides?

As little as possible. PrestaShop hooks and services cover almost every need and survive updates. When an override is unavoidable, it is kept small and documented.

What does the post-delivery warranty cover?

Twelve months of PrestaShop and PHP compatibility updates, and bug fixes within the delivered scope. After that, we offer a renewal or a maintenance contract.

Do you work on themes?

Yes, on Classic, Hummingbird and marketplace themes: templates, blocks, rendering performance. We work through a child theme or display hooks so nothing is lost at the next update.