E-commerce Engineer / Developer

In an online shop, every technical detail translates directly into revenue. A product page that takes four seconds to load, delivery costs revealed at the last step or a checkout form that asks for the same information twice lose sales that were already won. The e-commerce developer works on exactly these points: payment reliability, consistent stock between the online shop and the physical store, a fast catalogue and a clear checkout.

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How we work

What we do

The work starts with the real buying journey: where visitors come from, where they drop off, what the conversion rate of each step is. This data guides the technical fixes, which are often more profitable than a complete visual redesign.

  1. 1

    Analysis of the existing funnel

    Measurement of drop-off rates step by step to pinpoint exactly where sales are lost.

  2. 2

    Technical configuration

    Setting up or fixing payment methods, VAT rules and delivery costs.

  3. 3

    Performance optimisation

    Speeding up the catalogue and product pages, often the first conversion lever on mobile.

  4. 4

    Complete order testing

    Real end-to-end orders, checks on emails, invoices and refunds.

  5. 5

    Conversion tracking

    Analytics tracking set up to measure the effect of each fix on sales.

Tools

Tech stack & tools

The technologies and platforms we use for this type of assignment.

  • WooCommerce
  • Shopify
  • PrestaShop
  • Stripe
  • PayPal
  • PHP
  • REST API

Methodology

No change is pushed to a live shop without first testing it on a copy: a payment error immediately costs sales.

Deliverables

What's included

A detailed list of what you receive at the end of the assignment.

  • Audit of the checkout and abandonment
  • Setup or fixing of payment methods
  • Catalogue speed optimisation
  • Carrier and VAT configuration
  • End-to-end order testing
  • Transactional emails checked and customised
  • Conversion analytics tracking
  • Documentation of the settings applied

Indicative timeline: 2 to 4 weeks for an optimisation, 5 to 8 weeks for a complete shop

Skills

Training & certifications

The core skills and continuous learning behind this area of expertise.

  • Technical expertise in WooCommerce and PrestaShop (themes, hooks, modules)
  • Online payment security standards and PCI-DSS requirements
  • Monitoring of legal obligations for distance selling
  • Tracking of changes to the Stripe and PayPal APIs
  • Ongoing training in conversion rate optimisation
Expertise

Experience & expertise

The kinds of assignments this expertise covers day to day.

  • Online shops built for catalogues from 20 to several hundred products
  • Migration of existing shops while preserving search rankings
  • Multi-method and multi-currency payment integrations
  • Checkout optimisations measured before and after
Our commitments

Why choose us

Payments leave no room for approximation

Every configuration is tested with real orders before going live.

Profitable fixes come first

We first deal with what loses you sales, before cosmetic improvements.

Stock always consistent

Synchronisation between the shop, warehouse and till prevents selling products that are out of stock.

Built-in commercial compliance

Terms of sale, VAT, right of withdrawal and invoicing are set up according to the applicable regulations.

Pricing

Our packages

Indicative prices, adjusted after we discuss your project.

One-off assignment

from €550

Targeted fix

  • Diagnosis of the problem
  • Tested fix
  • Quick intervention
  • Detailed report
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Ongoing support

from €790 / month

Ongoing shop support

  • Continuous optimisation
  • Payment monitoring
  • Catalogue updates
  • Monthly conversion report
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All our prices are indicative. Contact us for a free personalised quote.

Go further

Related services

The services this expertise is most often involved in.

E-commerce website creation

Sell your products 24/7 with a high-performing, secure online shop.

Learn more

SEO & organic search

Appear on the first page of Google and attract qualified traffic for the long term.

Learn more

Maintenance & support

Your website always up to date, secure and performing well, whatever happens.

Learn more
Frequently asked questions

Expertise FAQ

Yes. On mobile, every extra second of loading time loses a significant share of visitors. It is often the first conversion lever to tackle.

In most cases yes, through their API or an existing connector. We check feasibility before committing.

The payment provider handles the transaction itself. Our responsibility covers the integration, which we test with real orders before going live.

Yes, with your products, customers and orders carried over, and redirects set up to preserve the search rankings you have built.

The diagnosis takes a few days and the fixes two to four weeks. The effect on sales is then measured over a full month.

Ready to start your project?

Let's talk about your needs and get a free, no-obligation quote within 48 hours.

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