JSON Crew · About Us

A software company that doesn't start with code.
It starts with the profitability of the process.

We make software for manufacturers and B2B companies that want to sell faster and more predictably. Instead of annual implementations, we deliver a working system in eight weeks. Specific promises, deadlines in the contract and a weekly preview of what is being created.

They trusted us
Band

See who you'll be working with

We do not outsource strategic decisions — we take them ourselves. Each conversation with the customer is conducted by one of us.

Jędrzej Siewierski — CEO JSON Crew
CEO & Founder

Jędrzej Siewierski

Team technical lead · 10+ years in 3D, Three.js and Next.js

He is responsible for the __ JSONCREW_0__ brand development strategy and the scalability of the architecture of the implemented systems. He keeps an eye on the schedules so that the projects are completed within the deadline specified in the contract. Previously he worked in banking, currently he leads the development of proprietary AI systems in the company.

Maciej Ramus — CMO JSON Crew
CMO & Co-Founder

Maciej Ramus

B2B marketing for 25 years · Runs the __ JSONCREW_0__ Lodge

Responsible for the refined frontend of implementations and a consistent brand image of __ JSONCREW_1__. He conducts conversations with customers at the discovery stage, and personally supervises quality tests before putting the product into production. Extensive experience in the WordPress and WooCommerce ecosystem.

Bartłomiej Kołodziejczyk — COO JSON Crew
COO & Co-Founder

Bartłomiej Kołodziejczyk

10+ years CGI & VFX · Sales lead to export markets

He conducts implementations on the client's side and takes care of team development and project profitability. He is responsible for the construction of the process from the first valuation to the accounting closure. He specializes in designing and building mobile and web applications.

What sets us apart

4 Things We Do Differently

Specific promises that we keep in every project.

01_TEMPO

First customers in production after 8 weeks

A classic agency promises a year of work, we deliver a working product in two months. We start with your sales process, not the choice of framework. The term and price are in the contract from the first day.

02_TECHNOLOGY

Custom configurators tailored to your process

Foreign platforms lock you in someone else's roadmap and price list in euros. We build for your business, in two models to choose from: our own build with the right to the code or JSON Hub as SaaS with Polish invoice and PL support.

03_COMMUNITY

Lodge JSON Crew, your colleagues' club

We do not end the relationship at the moment of handing over the keys. Our clients meet weekly, exchange experiences and develop their implementations together. It is the best network of contacts in Polish B2B online.

04_WARRANTY

You pay for the effect, not the hours

Before the code starts, you click on the finished prototype on staging and decide whether to move on. After the start, you have care with a response within 24 hours. Responsibility for the business result lies with us.

Free consultation · no obligation

Start your digital sales transformation

This is more than a free consultation. It's a concrete conversation about implementing transformation for companies ready to make decisions and take action. Fill out the form and we will prepare an initial analysis and action plan for you.

↓How long does the conversation last?
About 30 minutes. Specifically, without pouring water, you're talking about your process, we're honest about whether and how we can help.
↓Is it payable?
No. The first consultation is free and there's no obligation.
↓Does it commit to anything?
No. You get the preliminary analysis and the cost range, the decision is made by yourself.
↓What if the process is non-standard?
The better, we implement such processes, tailored to your business, not „out of the box".