We handle the front and back end of your online sales. On the Polish market as well as abroad. We strive to provide the most comprehensive customer experience possible so that you can handle everything in one agency.
We can integrate with any e-commerce system available on the market. We develop custom e-commerce applications. We solve specific operational problems, such as those related to logistics or sales support. We partner with the best software providers.

We connect ChatGPT and Claude to your data: ERP (Subiekt, Comarch, enova365), BaseLinker, and your online store. We build MCP servers, AI agents for customer service, and content automation for PIM. We start with an AI audit to ensure we implement only what delivers results.

One simple subscription and nearly 20 specialists on board. You decide who you need, and we provide experienced specialists. We’ll help you manage your entire online sales operation by automating processes and optimizing shipping.

Our support team constantly monitors your systems and the integrators that connect them, responding quickly to any failures and supporting you in developing your automation. Not only do you not have to worry about the integrity of the tools, but we will configure them to be optimal for your industry.

Knowing that only 36% of customers are fully leveraging the potential of IT system integration, we offer assistance in optimizing your processes. We’ll analyze your current workflows and propose the best solutions. We also conduct an AI audit: we identify processes that are worth automating with AI and calculate when they’ll pay for themselves.

Customer service is crucial in online sales, so it's important that it's of a high standard-so that the buying experience is simple and pleasant for the user of your store. The e-commerce market is dynamic,so it is important to adapt to new trends as soon as possible so as not to fall behind the competition.

We have implemented ERP and OMS systems in dozens of companies and developed our own automation methods. We integrate them to create one cohesive system and make sure that all these tools work together to make your daily work easier and allow you to focus on things more important than invoicing.


We conduct audits and provide comprehensive support for BDO obligations in Poland and EU EPR systems in foreign markets (including LUCID and EKO-KOM). We register your company, maintain packaging records, submit reports, and prepare you for changes to the Packaging and Waste Management Act (PPWR). We protect your sales from being blocked on marketplaces and from heavy fines.


Our Selium brand supports sellers in developing sales on marketplaces such as Amazon, Allegro, eBay, Kaufland, Alibaba and many others. We support you in the day-to-day operation on these platforms and the development of sales through optimization and paid campaigns on the respective platform.

There are hard numbers behind our work. After each project, we survey the implemented process with the client and ask for feedback. This allows us to be better and better in subsequent projects and provide you with even higher quality services.
Average NPS at our customers
Integration and automation implementations annually
Closed projects successfully

Choosing a technology partner is a strategic decision that has a real impact on the growth and stability of your business. At Changelog, we understand the challenges faced by rapidly growing, large-scale e-commerce companies. What sets us apart is not just our technology, but more importantly our unique approach and commitment to delivering real results: Choosing a technology partner is a strategic decision that has a real impact on the growth and stability of your business.
Where others promise, we take responsibility and deliver solutions that work. Our reputation is based on efficiency and timeliness. We understand the criticality of your processes, so we approach every project with determination and are not afraid to confirm our commitments in the contract. With us, you are assured that your investment will deliver the expected result.
Our team is not only talented programmers (seniors), but most importantly experienced specialists with deep domain knowledge of e-commerce, logistics, ERP and WMS systems. Our business analysts can "step into your shoes", understand the specifics of your operations and translate them into effective technology solutions. We speak your language.
We do not believe in "shortcut" solutions. We precede each project with a detailed pre-implementation analysis. We carefully map processes, identify bottlenecks and precisely define goals. This allows us to avoid costly mistakes, design optimal solutions and guarantee that the final product perfectly meets your needs.
We specialize in creating dedicated applications and advanced integrations that solve problems that standard systems can't handle. We focus on building reliable, scalable and secure solutions that provide a solid foundation for your growth.
We offer a full range of services under one roof - from analysis, development and implementation to advanced technical support (SLA). In this way, we ensure consistency of operations, simplify communication and take comprehensive responsibility for the technological success of your e-commerce.
Our developers and analysts work with AI tools every day: when writing code, conducting tests, analyzing data, and creating documentation. This allows us to complete the same projects faster, and every change is still reviewed by a human. We also implement AI for our clients, but only where we can quantify the return on investment.
When you choose Changelog, you not only get a technology provider, but more importantly a committed partner who understands your business, cares about the highest standards and is fully focused on delivering value that will translate into your success.
In the first stage, we need to get to know your business and understand the challenges you’re facing. We approach each case individually and strive to find the best solution tailored to your company. If necessary, we’ll assess your processes by visiting you at your workplace.
Whether we are creating a workflow for your warehouse or a new online store. Every collaboration requires a design, brief and roadmap so that we can work smoothly and according to your recommendations. At this stage, we define a strict project framework. This way, you'll know what's going on and the progress of the work from the beginning.
The most important part of every project. We carry out the work for you in four-week sprints. Every two weeks, we meet to discuss what’s been completed and what still needs to be done. Depending on the scale of the project, sprint cycles can last up to several months. During sprints, we use AI assistants for coding and automated testing, which speeds up the work, and every change is reviewed and approved by our specialist.
Toward the very end of the sprint(s), our analysts will deploy the solution to the test environment you have set up. After successful testing, we will launch the solution in production and monitor it over the coming period to ensure that everything is working properly.
We will also support you after the implementation of the project. Any dedicated solution, requires special and specialized care. With a flexible range of support plans and a dedicated customer panel, we respond quickly to any reported problem and are available to you even on weekends, if your business requires it. You can read more about our support plans here.





























Changelog is a software company that develops system integrations, OMS implementations, and AI implementations for e-commerce and logistics companies.
We operate from the front and back office at multiple levels of abstraction. We specialize in advanced sales system integrations and the broader e-commerce market. We are able to operate from behind the scenes (whitelabel) as well as run complex projects of our clients.
It is up to you to decide in what form you want to work with us. If you already have a trusted company that you operate with, we will adapt to their mode of operation and work together to develop your business.
We develop dedicated software to support online sales and order processing. We help stationary wholesalers and stores to appear online, efficiently manage warehouse management, optimize logistics or accounting processes. We design online stores for clients and change the face of their brand. We create dedicated teams working for our clients' results.
We provide technological support to media houses, interactive agencies and companies implementing ERP and OMS. We create dedicated solutions and software to integrate accounting systems with the world of online sales. We build sales landing pages for advertising or marketing agencies. We share our knowledge and collected data from thousands of clients.

We don't sell PV, we won't pester you with unnecessary phone calls if you don't want us to. We always try to provide value to our potential customers.