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💻 Software company with 12 years of experience — AI-assisted development

Software development company in Poland — Half the cost of an in-house team

ERP, B2B/B2C portals, Comarch Optima + Przelewy24 + Allegro integration, industry-specific software. Our 12-year team builds with the latest tech; automates manual work and cuts headcount. Fixed price in PLN, 12-month warranty, KSeF 2026 ready.

Live deployment in 6-12 weeks AI-assisted dev · 40% faster 12 months free service warranty
app.zunapro.com
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Technologies and integrations we work with

Next.jsNestJSPostgreSQLReact NativeAllegro APIAmazon PLComarch OptimaSubiekt GTKSeF · JPK_VATPrzelewy24 · PayU · BLIKInPost PaczkomatyOVH PL · AWS

From custom software to AI — the full stack in-house

One budget, one team — instead of coordinating 12 freelancers. Frontend, backend, mobile, devops, AI — all under one roof in Warsaw.

ERP and B2B portals

Inventory, orders, production, finance, CRM, B2B portal. Two-way integration with Comarch ERP Optima/XL, Symfonia, Subiekt GT, enova365. Role-based permissions, multi-branch, multi-currency accounting PLN/EUR/USD.

E-commerce and marketplace integration

Allegro, Amazon PL, Empik, Ceneo, Morele.net, X-Kom, Erli, OLX PL. Sync products/stock/prices from a single panel. Order automation, InPost Paczkomaty + DPD + Poczta Polska + GLS integration, returns handling.

iOS and Android apps

One codebase, two platforms with React Native. App Store + Google Play publishing included. Push notifications, offline mode, biometric login, BLIK + Przelewy24 + PayU + Klarna in-app.

Artificial intelligence and automation

Polish-language customer-service chatbot, product description generator, invoice OCR (KSeF-compatible), smart stock forecasting, customer segmentation. Choice of OpenAI GPT-4, Claude or own model on PL server.

KSeF and accounting integration

Krajowy System e-Faktur (KSeF) — ready for the 2026 mandate. JPK_VAT, JPK_FA, JPK_KR, NIP/REGON verification in GUS, BDO (waste), integration with Comarch/Symfonia/Subiekt/enova365/iFirma/fakturownia. Automated PIT/CIT/ZUS DRA.

Industry-specific software

Logistics (TMS/WMS with InPost), healthcare (NFZ/P1/e-Recepta), education (LMS), construction (project tracking + ZUS), restaurants (POS+QR menu+Pyszne.pl), real estate (CRM+Otodom/OLX), retail (Allegro+stock). A team that speaks your industry.

Our clients cut headcount and multiply revenue

One panel + one operator replaced 5 people doing manual work. Here are a few Polish-market examples.

Logistics

InPost Paczkomaty TMS with multi-warehouse

1,800 daily shipments tracked in Excel; moved to mobile + desktop panel with QR/barcode, auto labels for InPost + DPD Polska + Poczta Polska. Warehouse-HQ sync in real time.

📈 68% faster · back-office from 4 to 1 person
E-commerce

Allegro + Amazon PL + Empik multi-channel

8 stores, 14,000 SKUs, 4 warehouses. Stock drops caused oversells between Allegro and Amazon PL. Central panel + AI-forecasted stock alerts + auto-publication to Ceneo.

📈 0% oversells (previously 12%) · 47 hrs/month manual work saved
Healthcare

Dental chain — NFZ / P1 integration

Appointments, patient charts, X-ray viewer, e-Recepta and e-Skierowanie via P1, NFZ billing across 6 branches. iOS/Android patient app included.

📈 Appointment conflicts -94% · auto-import NFZ schedule
Construction

Construction + ZUS payroll

Field engineer logs hours, material requests and photo progress on mobile. Auto-calc ZUS DRA and PIT-4R, export to Płatnik. Live dashboard for the project manager in Warsaw.

📈 Billing prep from 5 days to 4 hours · -23% cost variance
Restaurants

POS + QR menu + Pyszne.pl / Uber Eats PL integration

12-location chain in Warsaw and Kraków. Floor staff reduced 40% — guests order via QR, kitchen display auto-updates, Pyszne.pl orders flow straight into the kitchen.

📈 Order errors -91% · table turnover +26%
B2B Textile

B2B portal + Comarch Optima + KSeF integration

180 dealers ordered via phone/WhatsApp. B2B portal + two-way Comarch Optima integration + automated invoicing via KSeF automated order > invoice > InPost shipment.

📈 Order intake from 14 min to 90 sec · 3 staff repurposed

From consultation to production — transparent, week by week

No months of agile chatter. Fixed price in PLN, fixed deadline, weekly demos. No surprise invoices or vanishing PMs.

  1. 1
    Week 0

    Free consultation and quote

    We discuss your processes (60-90 min — Warsaw Mokotów office or online). Map current software, problems, goals. Within 3 business days you get a fixed PLN quote, module by module, with a timeline. No obligation.

  2. 2
    Week 1

    Design and sign-off

    Wireframe + clickable Figma prototype. We walk the screens together and you sign off the final version. Data model, integration map (Comarch/Allegro/InPost/KSeF) and API spec documented.

  3. 3
    Weeks 2-4

    Build — AI-assisted

    Frontend + backend + mobile in parallel. Cursor + Claude/GPT-4 ship code 40% faster. Weekly live demos + screencasts. GitHub access open — you see the code.

  4. 4
    Weeks 4-5

    Integrations and testing

    Comarch Optima/XL, KSeF, JPK_VAT, Allegro/Amazon PL APIs, Przelewy24/PayU/BLIK, InPost Paczkomaty + DPD + Poczta Polska — all wired up. UAT testing with your team. Bug list closed in 48 hours.

  5. 5
    Weeks 5-6

    Training and rollout

    2-3 live training sessions (recorded, in Polish or English). Deploy on OVH PL / nazwa.pl, SSL, backups, monitoring. Soft launch — 1 week with pilot users. Then full handover.

  6. 6
    Ongoing

    12-month warranty + service contract

    12 months of free bug-fix warranty. Then optional service contract (hourly or monthly bundle). 24/7 monitoring — 99.9% uptime SLA. New features in monthly sprints.

COUNTRY-SPECIFIC

Built for the Poland Market

Local marketplaces, carriers, payment methods and compliance frameworks — from a single panel

Local Marketplaces

  • Allegro
  • Amazon.pl
  • OLX.pl
  • Empik
  • Morele.net
  • Ceneo

Carrier Integrations

  • InPost (Paczkomaty)
  • DPD Polska
  • DHL Polska
  • GLS Polska
  • Poczta Polska

Payment Methods

  • BLIKPL
  • Przelewy24
  • PayU
  • Stripe
  • PayPal
  • KlarnaBNPL

Compliance & Legal

  • RODO (PL GDPR)
  • UODO
  • KSeF (e-Faktura)
  • JPK_V7
  • VAT (PTU) %23
  • KSeF (e-Faktura)
SUCCESS STORY

A oyuncak/hediye markası in Warszawa

"Allegro + Amazon.de ile DACH+PL pazarında 5 ayda 60K€ ciro"

Every project is different — we prepare a custom PLN quote

No shelf price lists. We listen to your need, define the modules and within 3 business days deliver a fixed price (PLN) + fixed deadline quote. The call is free, no obligation.

Included in every project

Whatever the scope, the items below are standard — no upsell.

  • Fixed PLN price + fixed deadline guarantee (in contract)
  • Module-by-module breakdown — no surprise invoices
  • Weekly live demos + GitHub access (you see the code)
  • AI-assisted build (Cursor + Claude/GPT-4) — 40% faster
  • Design included — approved Figma prototypes
  • 5+ integrations (Comarch/Symfonia/Subiekt, Allegro/Amazon PL, KSeF, Przelewy24/BLIK, InPost)
  • iOS + Android app (if needed)
  • Multi-user, role-based permissions
  • Poland hosting (OVH PL / nazwa.pl) + SSL + backups + monitoring — GDPR-compliant
  • 12 months free bug-fix warranty
  • 2-3 live training sessions in Polish or English (recorded)
  • Source code is 100% yours — GitHub repo handed over, no vendor lock-in
Süre6-12 weeks · depending on scope
Garanti12 months free warranty + optional service contract
Request a free quote

What to bring to the consultation

Bring these — we make a precise PLN quote in 60 minutes.

  • Short summary of your current workflow (who → what → how)
  • Software currently used (Excel, Comarch Optima, Subiekt, website, etc.)
  • Problems / bottlenecks — what do you want to solve?
  • Approximate user count (internal team + clients)
  • Integration needs (Allegro/Amazon PL, bank, InPost, Comarch/Symfonia, Przelewy24/BLIK, KSeF)
  • Target go-live date + rough budget range (PLN)

Book a free consultation

Fill the form — we reply within 24 hours. Free 60-minute call — no obligation, and your idea is safe (we sign a GDPR-compliant NDA).

Frequently asked questions

Software houses often slip — what guarantee do you give?

We work fixed price (PLN) + fixed deadline. The go-live date is in the contract; if we slip we pay 3% weekly penalty (max 20%). We can do this because we lock scope upfront, prevent scope creep and use AI-assisted code. 23 of our last 24 projects shipped on time or early (references at the consultation in Warsaw Mokotów).

Do you hand over the code or do we get locked in?

**The code is 100% yours.** The GitHub repo is handed over for free. You can continue with any other company or hire developers in-house. Vendor lock-in is not our model — we keep clients by quality, not contract.

Are you ready for KSeF 2026?

Yes. Krajowy System e-Faktur (KSeF) becomes mandatory in 2026. Our ERPs and B2B portals have a built-in KSeF module (issue, fetch UPO, KSeF ID on invoice, integration with the NIP white list and GUS REGON). It runs in test mode today — production from day one of the mandate.

Where do you host and is it GDPR-compliant?

By default we host in Poland (OVH PL Warsaw, nazwa.pl Kraków) or in the EU (Hetzner Falkenstein). We meet RODO/GDPR, sign a Data Processing Agreement (DPA), keep a processing register. For medical data (NFZ/P1) we apply encryption at rest + in transit and an audit log.

You use AI — won't quality be worse than hand-written code?

On the contrary. Our senior with Cursor + Claude/GPT-4 ships ~40% faster and with 25% fewer defects than a lone developer (our measurements). AI writes code, but architecture, code review and tests go through our 12-year team. Result: same quality, faster and cheaper.

What marketplaces and systems do you integrate?

**Marketplaces:** Allegro, Amazon PL/DE/FR/IT/ES, Empik, Ceneo, Morele.net, X-Kom, Erli, OLX PL, eBay, Etsy, Bol.com. **ERP/Accounting:** Comarch ERP Optima/XL, Symfonia, Subiekt GT, enova365, iFirma, fakturownia, SAP Polska. **KSeF/JPK:** integration with Krajowy System e-Faktur, JPK_VAT/FA/KR, NIP white list check, GUS REGON, BDO. **Payments:** Stripe PL, Przelewy24, PayU, Tpay, BLIK, Klarna, mBank PayU. **Couriers:** InPost Paczkomaty (priority), DPD Polska, Poczta Polska, GLS PL, DHL Polska, FedEx Polska, UPS Polska. If the system exposes a REST/SOAP API we integrate.

What if I don't take a service contract? Will the software die?

No — the code is yours, you run it. During the 12-month free warranty every bug is on us. After: (1) in-house developer, (2) monthly service contract (bundles: 8 hrs/mo 950 zł — 40 hrs/mo 4,200 zł, net), (3) hourly support (180 zł/hr, net). No contract lock-in.

Do I really need a mobile app or is web enough?

If you have field staff (InPost driver, store manager, construction lead, NFZ doctor), mobile is essential — push, offline, camera (QR/barcode/photo). For desktop-only teams a Progressive Web App (PWA) is enough — faster and cheaper. At the consultation we recommend per scenario; if you don't need mobile we say so.

Custom Software in Poland: Comarch, Symfonia, Optima Integrations and the KSeF API

Polish enterprise IT is not defined by SAP and Oracle but by domestic incumbents: Comarch ERP Optima and XL, Symfonia, Insert, Sage Symfonia. Practically every Polish SMB does its bookkeeping on one of these. Custom software in Poland therefore means opening data pipes (XML/SOAP/REST) into those ERPs, treating the KSeF API as a first-class citizen, and producing compliant JPK_V7 audit files.

Comarch ERP XL and Optima

Comarch is a Kraków-headquartered listed company and one of the strongest players in Poland's SMB and mid-market. Optima is the entry tier and ERP XL the manufacturing/logistics suite. Optima exposes Web Services for product, stock, order and invoice sync.

Symfonia and Insert

Symfonia (Sage Symfonia) is favoured by small accounting offices; Insert Subiekt GT is the default at single-store retailers. Both work via XML import/export. ZunaPro's Subiekt GT connector pulls stock, till and invoice entries daily into a central panel.

KSeF API: Every Invoice in the National System Within 24 Hours

KSeF is Poland's national e-invoice platform run by the Ministry of Finance. Mandatory for large enterprises from February 2026 and for every taxpayer from July 2026. The flow is:

  1. Software emits an FA(2)-schema invoice XML.
  2. JWT token requested via the /online/Session/InitToken endpoint.
  3. XML POSTed to /online/Invoice/Send.
  4. The returned KSeF reference number is attached to the order and stamped onto the buyer's PDF.
  5. JPK_V7 monthly audit file derived from KSeF data and pushed to the national portal.

Płatnik and ZUS Integration

Płatnik is the official tool for filing ZUS (social security) declarations. Any payroll system in Poland must produce the Płatnik KEDU file format. ZunaPro's HR/Payroll module supports KEDU 5.5 schema.

NBP FX and Multi-Currency Accounting

The National Bank of Poland publishes Table A daily exchange rates and Table B a wider basket. Polish tax records require EUR/USD invoices converted via NBP Table A. ZunaPro pulls the daily NBP REST API rate and applies it to accounting records automatically.

In-App BLIK SDK

For customers shipping a vertical mobile app we integrate the Polski Standard Płatności (PSP) BLIK SDK across mobile and web. Field-sales, warehouse cash collection and merchant point-of-sale all settle in seconds via a six-digit BLIK code.

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