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SISSOFT
E-commerce migration → headless

Online store migration to a modern headless stack

We pull serious stores out of slow platforms.

We migrate stores off WooCommerce, PrestaShop, OpenCart, Shopify, Magento, MerchantPro and Gomag to Sylius/Symfony + Next.js. Faster, more stable, easier to scale — with no SEO traffic loss.

351,000+
products in a single B2B store
1.2 s
real mobile LCP, measured on real users
83 ms
INP - interaction responsiveness

Platforms we migrate from and the technologies we build on

  • WooCommerce
  • PrestaShop
  • OpenCart
  • Shopify
  • Magento
  • MerchantPro
  • Gomag
  • Sylius
  • Symfony
  • Next.js
  • Hetzner
  • Cloudflare
The problem

Slow platforms cost you sales every single day

A store that loads slowly loses customers before they even see the product. And on monolithic platforms, every optimization hits the limits of the architecture.

Lost conversions

Every extra second of load time lowers conversion. On mobile, the gap between 1s and 4s means real, missed sales.

SEO penalties

Google uses Core Web Vitals as a ranking signal. A slow store loses positions — and free organic traffic.

Catalogs that can't keep up

Tens or hundreds of thousands of products bring PrestaShop/Magento monoliths to their knees: slow filtering, sluggish admin, rising server costs.

Scaling bottleneck

On classic architectures, every big campaign is a risk. Headless separates frontend from backend and scales them independently.

Services

What we do for stores that want more

From full migration to maintenance and hosting — everything performance-related in one place.

See full details

E-commerce migration to a modern stack

We move your store off PrestaShop, Magento or Shopify onto Sylius/Symfony + Next.js, preserving SEO, URLs and order history.

  • 1:1 URL mapping + 301 redirects
  • Migrate products, customers, orders
  • Zero downtime at cutover

Headless site & store development

We build Next.js frontends on top of a solid Sylius/Symfony backend: fast, scalable and easy to extend, with an admin experience your team owns.

  • Next.js frontend (App Router, SSG/ISR)
  • API-first Sylius/Symfony backend
  • Custom design system

Performance optimization (Core Web Vitals)

Auditing and optimization to green CWV: LCP, INP, CLS. We focus on real mobile speed, not just lab scores.

  • Lighthouse audit + field data
  • Image, font and JS optimization
  • Well-tuned caching and CDN

Integrations

We connect your store to the whole ecosystem: couriers, invoicing, ERP and marketplace feeds — automated and reliable.

  • Couriers (AWB, tracking)
  • Invoicing & ERP
  • eMAG, Google, Meta feeds

Maintenance subscription

A dedicated team that continuously monitors, updates and optimizes. You handle sales, we handle the infrastructure.

  • Monitoring & uptime
  • Security updates
  • Priority support with SLA

Dedicated Hetzner hosting

Dedicated infrastructure on Hetzner servers, configured and managed by us: fast, secure and free of cloud bill surprises.

  • Dedicated servers, guaranteed resources
  • Automated backups
  • Full administration
Process

How a migration works, step by step

A clear process, no surprises. You always know where we are and what comes next.

  1. 01

    Audit & analysis

    We analyze your current store, catalog, traffic and pain points. We set measurable performance goals.

  2. 02

    Migration plan

    We propose the headless architecture, the data migration plan and the SEO strategy to keep your rankings. Clear estimate and timeline.

  3. 03

    Development

    We build the Sylius/Symfony backend and the Next.js frontend, with incremental deliveries and a staging environment for testing.

  4. 04

    Data migration

    We migrate products, categories, customers and orders, with validation and integrity checks. We map every old URL.

  5. 05

    Launch

    Controlled cutover with 301 redirects and real-time monitoring. Goal: zero downtime and zero traffic loss.

  6. 06

    Maintenance & growth

    After launch we stay on board: monitoring, continuous optimization and new feature development.

Case study

electronic-mag.ro — a B2B store with 351,000+ products

A serious B2B store with a huge catalog, moved to a modern headless stack. Exactly the kind of project SISSOFT exists for.

Challenge

A massive catalog (351,000+ products), the need for fast filtering and a smooth experience for B2B customers ordering in volume.

Solution

API-first Sylius/Symfony backend + Next.js frontend, dedicated Hetzner hosting, caching and indexing tuned for a catalog of this size.

Read the full case study

351,000+

products in catalog

1.2 s

real mobile LCP (CrUX)

83 ms

INP on real users

Headless

Sylius/Symfony + Next.js

Tech stack

Why headless, and why this stack

We separate frontend from backend to get maximum speed up front and total flexibility in the back.

Frontend — Next.js

Static/ISR pages served instantly, optimized images and fonts, minimal JavaScript. A fast experience on any device, with first-class SEO.

  • Next.js
  • React
  • TypeScript
  • SSG / ISR

Backend — Sylius / Symfony

A mature, extensible, API-first open-source e-commerce core. We model your exact business processes, without the compromises of a closed platform.

  • Sylius
  • Symfony
  • API Platform
  • MariaDB

Infrastructure — Hetzner + Cloudflare

Dedicated Hetzner servers, CDN and security via Cloudflare. Guaranteed resources, low latency and predictable costs.

  • Hetzner
  • Cloudflare
  • Nginx
  • CI/CD
Results

Measured numbers, not promised ones

Real field data from electronic-mag.ro - the B2B store we built and run ourselves.

0+

Products in catalog, in a single store

0 s

Mobile LCP (Google's good threshold: 2.5 s)

0 ms

INP - interaction response (threshold: 200 ms)

0

CLS - zero layout shift on load

Source: Chrome UX Report (real-user data, 75th percentile over 28 days), mobile, origin-wide. Measured 7 August 2026. Results on other projects vary by catalog and traffic.

FAQ

Answers to what you ask most often

No, if the migration is done right. We map all old URLs 1:1, set up 301 redirects and preserve the content structure. The stated goal is zero loss of organic traffic.

It depends on catalog size and integration complexity. After the initial audit you get a clear timeline, with incremental deliveries and a staging environment you can test.

WooCommerce suits small stores. For large catalogs and serious B2B logic, Sylius/Symfony offers an API-first architecture that's far more scalable and easier to extend without compromises.

Yes. We migrate from PrestaShop, Magento and Shopify. With Shopify, we pull your store out of the platform's limitations and give you full control over the stack and your costs.

We rebuild or reconnect them on the new stack: couriers, invoicing, ERP and marketplace feeds. The goal is for day-to-day operations to be at least as simple as before.

Yes. We can host your store on dedicated Hetzner infrastructure and handle maintenance on a subscription: monitoring, security updates and continuous optimization.

Got a serious store on a slow platform?

Let's talk about moving it to a modern stack, without losing traffic or sales.

Contact

Let's talk about your project

Tell us briefly about your store and your goals. We'll come back with a concrete proposal.

Contact details

SISSOFT GLOBAL SRL · CUI RO35158861
contact@sissoft.ro+40 721 091 684
Slobozia, Ialomița, România
We usually reply the same business day.