A software company that doesn't start with code.
It starts with the profitability of the process.
Software development company + consulting agency + JSON Crew. Specialization: B2B quote automation (Configure, Price, Quote). An MVP in 8 weeks, not 8 months.
4 implementations, 4 industries, specific figures
Not just “trusted by 150+ compaNos”—we show you the names, the numbers, and exactly what has changed.
Akpil
57 machine models, 16 variants × 30+ options. Sales representatives received over 150 inquiries per week, 60% of which were the Same questions.
KG Electronics
A manufacturer of heating boilers. Three separate apps for three types of units. A mobile app for cloud-based heating control.
Forest
7-step configurator: model → stock → wood → caliber → magazine → accessories. The customer sees the price for each selection, generates a PDF, and comes to the store with a final decision.
Showroom network
5 retail locations, 12 salespeople, personnel costs = 60% of revenue. B2C customers returned 3 times before making a decision.
Three founders, decades of experience
We don’t outsource strategic decisions—we make them ourselves.
Jędrzej Siewierski
CEO · Founder · 10+ years of experience in 3D / Three.js / Next.jsDiscovery lead on the Akpil project. Full stack: strategy → architecture → code → deployment.
LinkedIn
Maciej Ramus
CMO · Co-founder · 25+ years of B2B marketing experienceOwner of the cold outreach campaign (Apollo + Make automation). Leads the JSON Crew.
LinkedIn
Bartholomew Kolodziejork
COO · Co-founder · 10+ years of 3D pipeline experienceCGI/VFX background. Operations + native English-speaking sales lead for export projects.
LinkedIn4 Things We Do Differently
MVP in 8 weeks
We start with a process map, not by choosing a framework. Traditional agencies: 4 months of discovery + 8 months of development. Us: 1–2 weeks of discovery + 6–8 weeks for an MVP, fixed price.
Custom Configure, Price, Quote + 3D in Poland
We are among the first in Poland to build custom B2B Configure-Price-Quote solutions with 3D configurators. TaCTOn and ThreeKit cost between €50,000 and €200,000 per year for a subscription. With us, you get a fixed price and ownership of the code.
The JSON Crew
Customer community: 24/7 Slack support + weekly live workshops + 2 one-on-one sessions per month + resource library + JSON Hub BASIC included. See the Box.
Responsibility for the effect
We don’t “deliver code”—we deliver business results. After the UX/UI design phase (Phase 2), you’ll see a clickable prototype on the staging environment—you test it before a single line of code is written. Approval is up to you. After launch, we offer a 24-hour SLA.
From "We have a problem" to "The system is working" in 5 steps
Each phase has a specific timeline, deliverable, and acceptance criteria. No "it depends" and no Time and Materials-style time-based billing.
Advance payment and kick-off
After signing the contract
A 30-minute Discovery+ workshop with your team. We’ll map out the sales process, business rules, and integrations. We’ll schedule the team in the production calendar.
Result: contract + scope of work + milestone schedule.
Payment: 40% deposit.
UX/UI Design
2–3 weeks
Wireframes, business rule diagrams, a design system tailored to your brand, and a clickable prototype on the staging environment. You test it live, provide feedback, and we iterate 1–2 times before the code goes live.
Result: clickable prototype + design system + decision document.
Customer approval
2–3 days
UX/UI design sign-off. Final revisions (if any). We won’t start coding without your approval—we protect your budget by avoiding work on an endless project.
Result: Approved design + frozen scope of work.
Payment: the next 40% (milestone).
Development
6–8 weeks
2-week sprints with a review during staging after each sprint. Your team tests as they go, not after the sprint is over. Internal code review + your access to the repo.
Result: production-ready system on staging, technical documentation.
Implementation and testing
1–2 weeks + SLA 24 hours after launch
Deploy to production with a rollback plan. UAT with your team (sales, IT, warehouse). Training on how to use the CMS dashboard—your team will manage content, prices, and options on their own.
Result: Production system + training + 24-hour SLA for critical errors.
Payment: the final 20% (after implementation).
Everything decision-makers ask about during the first interview
How much does it cost to implement the configurator?
MVP Configurator: from 49,00PLN 0 (Starter — Category 1, up to 20 variants) to 89,00PLN 0 (Pro - full configuration, Customer Relationship Management integration, multi-language). Larger projects with 3D Three.js and ERP: PLN 90,000–300,000. JSON Hub SaaS: PLN 1,500/month (BASIC). We provide a specific quote after a 30-minute discovery period.
How is JSON Crew different from other software development compaNos?
Three specific differences: (1) we start with a process map, not on the choice of framework; (2) MVP fixed price in 8 weeks vs Time and Materials for 6–12 months; (3) responsibility for the business result — approval after the UX/UI project (stage 3) protects your budget, SLA 24 hours after launch. Plus its own SaaS JSON Hub as an alternative to the Pipedrive + PandaDoc + Asana stack.
How are we different from TaCTOn, ThreeKit, and Salesforce Configure, Price, Quote?
Global SaaS providers: €50,000–€200,000 per year for subscriptions + additional customization fees. Most do not offer Polish localization (GDPR, Polish VAT, integration with Polish Customer Relationship Managements). Us: one-time fixed MVP price starting at PLN 49,000, code ownership, integration with Polish Customer Relationship Managements, Polish reverse-charged VAT, maintenance in PLN. 3-year TCO 3–5× lower.
What if the implementation fails?
We follow a 5-step process with a sign-off point after the UX/UI design phase (Step 3). After stage 2 (UX/UI design, 2–3 weeks), you’ll see a clickable prototype on the staging environment—you test it before any production code is written. Approval is up to you; we won’t start coding without it. Payment is 40/40/20 (deposit / after design approval / after implementation). After launch, an SLA for critical errors (24-hour response).
What compaNos do you work for?
Sweet spot: manufacturing and B2B compaNos with 5–200 employees, revenue of at least PLN 1 million, offering a customizable product (agriculture, renewable energy, windows, doors, furniture, automotive accessories, garages, modular homes, heating boilers, sporting firearms). Less suitable for startups (too small for our products) and corporations with 1,000+ employees (lengthy procurement processes).
Three paths, depending on where you are
Not everyone is ready for a 30-minute conversation from the first contact. Choose a pace that suits you.