Since 2006 we have been building systems that companies earn on
We are a Polish software house near Poznań. We advise on platform choice, deploy stores and marketplaces, and then keep them running for years. The same team is behind our AI products today.
Who we are
SoftSolid was founded in September 2006 in Rokietnica near Poznań, and from day one it has done the same thing: write software meant to stand in production and earn money, not to look good in a demo. We started with custom business applications and, as online trade grew, shifted our weight to commerce platforms. In time we became the official distributor of CS-Cart and Multi-Vendor in Poland and a partner of the vendor, Simtech.
Over those years we have built and still maintain more than fifty stores and marketplaces, from one-person businesses to multi-vendor platforms serving hundreds of sellers. Our clients sell in Poland, Germany, the Czech Republic, Romania, Belgium, Switzerland, Latvia and Ukraine, as well as in Brazil, the United States and Australia. A good share of them have been with us for several years or longer.
The AI products on this site grow directly out of those deployments. An assistant built on company knowledge, an MCP server for CS-Cart and modules for PrestaShop exist because we know exactly what is missing in the daily work of a store and a back office. Hence our two stubborn assumptions: a tool should fit into the existing process instead of rearranging it, and data should stay wherever its owner wants it.
How you work with us
Three areas in which we can carry a project from the first conversation all the way to running the finished system.
Consulting
An audit of your current store, the choice of platform and architecture, and an implementation plan broken into stages with a quote. We check whether what you want to build can be done more cheaply on standard features, and we say plainly when it is not worth doing. We also run training for the teams operating the store and advise on opening sales in a new market.
- Technical and performance audit
- Platform choice: CS-Cart, Multi-Vendor, PrestaShop
- AI deployment design and business case
- Team training
Implementation
Building a store or marketplace from scratch or migrating from another platform, together with modules written for the client's specific process. We integrate with the systems you already use every day, and on the AI side we launch the assistant in the cloud or entirely on your own servers.
- CS-Cart stores and Multi-Vendor marketplaces
- Custom modules and core extensions
- Integrations: Baselinker, PayU, Przelewy24, InPost, DHL, InvoiceOcean, SalesManago, Ceneo, DeepL
- AI assistant deployments, cloud or on-premise
Managed services
A deployment is the beginning of the relationship, not the end. We run live instances: we update the core and modules, watch performance, respond to tickets and develop features in further iterations. For the AI assistant this also covers the infrastructure, the models and the knowledge base.
- Core, module and security updates
- Performance monitoring and incident response
- Feature development in further iterations
- Hosting and upkeep of the AI assistant and its models
The team
Our team consists of specialists who sharpened their skills over years of working together on complex projects for demanding clients. The same people run both the e-commerce deployments and the AI products.
Robert Diak
Has run the company since it was founded in 2006. Responsible for solution architecture, the development of CS-Cart and Multi-Vendor add-ons, and for the AI products we build on the same knowledge.
Amelia
The back end of stores and marketplaces: modules written for the client's process, integrations with external systems, data migrations between platforms.
Marcin
The front-end layer of deployments: themes, catalogue and checkout views, and shaping the admin interface around how the client's team actually works.
Magda
Communication, content and client contact. Makes sure that what we promise on the site matches what the team actually delivers.
How we run projects
We work the same way on an add-on worth a few thousand and on a marketplace built over six months. Below is what stays constant regardless of scale.
Sprints and retrospectives
Projects and the development of our own add-ons run on SCRUM. After every sprint we hold a retrospective so the next stretch of work goes better than the last.
Code in Git repositories
Every add-on and every deployment has its own Git repository. The change history is complete, so any version can be reproduced and rolled back, and the client is never left with code whose origin nobody knows.
Code review before release
Every change in the repository is reviewed by the person supervising the project. Nothing reaches production as code seen only by its author.
Tickets and documentation
Ideas and bugs go into JIRA, project assumptions into Confluence. Decisions made a year ago can still be found, and post-launch support does not rest on somebody's memory.
Selected deployments
Twelve of the fifty-plus stores and marketplaces we have built and maintain. The full list, with the scope of work for each, lives on our second domain.
Multi-Vendor with per-seller categories, charity-driven model
Multi-Vendor with Baselinker, PayU and DeepL translation
Multi-Vendor with extended promotion mechanics
Multi-Vendor fed by external data sources
Multi-Vendor with automatic catalogue translation
Store built with Store Builder, integrated with Baselinker
CS-Cart with full order handling through Baselinker
CS-Cart with Baselinker and PayU payments
CS-Cart integrated with SalesManago marketing automation
CS-Cart with Baselinker, PayU and client-specific code
CS-Cart with InvoiceOcean invoicing
Brand store for a well-known food producer
Companies that trusted us
Companies we have worked for on deployments and store development. Their references are collected on the second of our domains.
Two domains, one company
We run two sites because they serve two different conversations. Behind both stands the same legal entity, the same VAT ID and the same team.
soft-solid.net
Our own products: the AI assistant, the MCP server for CS-Cart and modules for PrestaShop. This is where you land when you are looking for a ready tool.
cs-cart.pl
Licences, deployments and maintenance for CS-Cart and Multi-Vendor, the full portfolio and references. This is where you land when you are looking for someone to build your store.
Let's talk about your deployment
Book a live demo or send us a question. We reply quickly and to the point.
office@soft-solid.net · +48 661 661 964
SoftSolid · ul. Sportowa 14, 62-090 Rokietnica
NIP PL8421361047