Online stores for demanding brands selling to consumers, professionals, or both. Polished customer experience, custom business logic, custom payments, performance and technical SEO. We often go beyond the site by building the business system that feeds it. Compatible with PrestaShop 1.7 to 8.2+. Hosting in Europe. Code delivered, not rented.
Synapse Up is a PrestaShop agency specialized in premium stores, both B2C (direct selling to consumers) and B2B (professional logic, tiered pricing, validation). We build robust, performant e-commerce sites made to evolve. Our signature: clean custom work, not patchwork held together with string.
Most PrestaShop projects we take over share the same story. A theme bought four years ago, ten modules stacked on top, overrides scattered through the core, a free-falling load time, and a team that no longer dares touch the back-office for fear of breaking everything. It's doable. We've done it. But it's simpler when you start out right.
Our approach is that of a software architect, not a theme integrator. We look at your catalog, your business flows, your constraints (payment, B2B, multilingual, ERP), and we design a store that holds up in two years, not just on launch day.
Not every store needs an agency like us. We're built for projects where PrestaShop is chosen for good reasons, whether you sell to consumers, professionals, or both.
Consumer stores where customer experience matters as much as the product: cosmetics brands, premium accessories, sport and lifestyle, craftsmanship. Polished SEO, optimized checkout, loyalty, customer program.
Tiered pricing per client, catalog restrictions, manual order validation, quotes with workflow. The logic Shopify can't deliver without expensive extensions.
Fifty configurable products or five thousand standard references: volume doesn't decide, per-product richness does. Custom attributes, fine combinations, configurators, compatibilities, business rules.
Several languages, several EU zones, strong brand guidelines, brand-level requirements. Multilingual SEO, performance, accessibility. Works for B2C and B2B alike.
Specific SEPA, multi-payment, double-charge prevention, stepwise validation, purchase orders. When the standard checkout isn't enough, in B2C as in B2B.
Broken, slow, unmanageable store? We audit, stabilize, clean up. 1.7 to 8 migration possible, B2C or B2B.
On the B2B side, our most telling reference is Lexus Boutique EU, the professional portal for Lexus accessories and products for European dealers. B2B-only store, with its own constraints: pricing rules per dealer account, order validation, payment and shipping edits after validation, business integrations. For this portal, we built and maintain 27 custom modules under our su_* signature.
On the consumer B2C side, our most complete case is Herboristerie du Valmont, a Belgian online herbalist with a rigorous selection of medicinal plants and teas. On this project, we didn't just build the PrestaShop site. We built their entire internal business system end to end, and we supported them through their BIO certification with the associated regulatory traceability system.
Sourcing of medicinal plants, incoming batch reception, quality control, traceability of supplier origins.
Support for obtaining BIO certification. Full traceability system compliant with regulatory requirements, from raw material to final customer.
Internal production tracking, blends, packaging labeling, fine-grained batch management (numbering, dates, traceability down to the final customer).
Warehouse management, locations, stock tracking by batch and by origin.
Parcel preparation and shipping, integration with an external logistics provider, delivery tracking to the final customer.
Multilingual storefront, AI-assisted product sheet generation, automatic translation, polished SEO.
AI chatbot on the site with more than 27 business intents to guide the conversation. 70% of requests are resolved without human intervention. The rest is escalated to Zendesk with full context for the team.
Automatic content publishing to social networks, with product selection, generation of visuals and copy tailored to each platform. The team takes over when they want to, not when they have to.
The whole system talks together: sourcing feeds production, production feeds stock, stock feeds the store, the store feeds shipping, and AI customer service absorbs 70% of downstream requests. It illustrates what a well-thought PrestaShop project can deliver: the site is not an isolated silo, it's the visible part of an integrated business system. The same logic applies to your project, at the scale of your activity.
These modules cover six functional domains you won't find in a standard theme or on module marketplaces.
Custom SEPA, multi-payment, double-charge prevention, purchase-order payment, VAT split, multi-billing.
Payment and shipping changes after order validation. Rare and technically tricky workflow, typical of premium automotive.
Unique product reference, fine attribute handling, image per combination, stock alert, hidden suggested price, named colors.
Dual menu, custom category hero, home filter, password recovery accordion, hero category.
Back-office label tweaks, shipping override, at-dealer management, custom zones, centralized front-end assets.
PrestaShop webservices extension for ERP integration and data synchronization.
If your PrestaShop project looks like any of these domains, we know what to do. We've done it. We've paid for the learning curve.
Measure, fix, stabilize. Three words that sum up how we work. Applied to PrestaShop, it looks like this.
Performance, overrides, modules, technical debt, SEO. A map of what's holding you back.
Prioritization by business impact. We fix first what pays off fastest.
Clean development, code delivered, documentation in your name. No wild core overrides.
No jargon. No pretending PrestaShop is magic when it isn't. No promise to rebuild everything in two weeks if the project deserves three months. Our only criterion: your store holds up in two years, without us.
The question comes up regularly. Why pick PrestaShop when Shopify is simpler and WooCommerce is free?
We'll tell you if Shopify is a better fit than PrestaShop for your project. We'd rather point you elsewhere than sell you a PrestaShop you shouldn't have bought.
A well-built PrestaShop store honors three baseline commitments.
None of this is optional. It's what separates a site that lasts from one you have to rebuild three years later.
PrestaShop is the best option whenever your products are complex or customized, your B2B logic goes off the standard path, or you want to own your code and your European hosting. Shopify is simpler but limited off the beaten path, and every specific need goes through paid third-party apps. WooCommerce depends on WordPress and quickly hits its limits once business flows go beyond the basics. PrestaShop offers real control over code, data and evolution, whether you have fifty technical products or five thousand SKUs.
Yes. We develop on 1.7.x, 8.x and our modules are compatible with 1.7.7 to 8.2+. We also support 1.7 to 8 migrations without breaking what already works.
Yes. Some of our clients run multilingual setups (several EU languages) and multistore (one infrastructure, multiple storefronts). We set up best practices for translation, language-aware SEO slugs and per-store config isolation.
Yes, it's one of our specialties. Tiered pricing per client, manual validation, quotes with workflow, catalog access restrictions by profile, ERP integrations. We've built this logic end to end for premium brands.
Just as much our job. Our most complete B2C case is Herboristerie du Valmont, an online herbalist with a rigorous selection of medicinal plants and teas. On this project, we built the store AND the entire internal system (sourcing, quality control, production, labeling, storage, shipping, external logistics integration). On B2C, customer experience matters a lot: polished SEO, smooth checkout, clean multilingual, load speed, accessibility. But what makes the difference is that the store is fed by a real business system behind it, not by an Excel sheet and goodwill.
You leave with the code. No lock-in. Our custom modules are in your name inside your installation. If you change provider, you take everything with you. We prefer to be chosen for quality, not for dependency.
Yes. Hosting in Europe (OVH, Scaleway or private cloud depending on the project), monitoring, security updates, backups. You can also stay with your current host if you prefer, we work with them.
Yes. Technical audit, friction points identified, clean-up plan. We handle complicated legacy (core overrides, old modules, degraded performance). Our principle stays the same: measure, fix, stabilize.
Tell Synapse about your store, our AI advisor. Ten minutes to frame what matters: your catalog, your B2B constraints, your current friction points. You leave with a useful recap and our team replies with a real proposal.