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💻 12-year experienced software company — AI-assisted development

Software company in Hungary — At half the cost of your in-house team

ERP, B2B/B2C portals, NAV Online Számla integration, industry-specific software. Our 12-year team delivers from Budapest (V./VI. district), Debrecen, Szeged, Miskolc and Pécs, automates manual work and reduces headcount needs. Fixed price, 12-month warranty.

Free discovery callExample projects
✓ Go-live in 6-12 weeks✓ AI-assisted development · 40% faster✓ 12-month free maintenance warranty
app.zunapro.com
Custom software dashboard preview

Technologies & integrations we work with

Next.jsNestJSPostgreSQLReact NativeeMAG APIVatera APISAP B1 HUBRG · Kulcs-SoftNAV Online SzámlaSimplePay · BarionOpenAI · ClaudeAWS · Azure

What we build

From custom software to AI — full stack in-house

One framework, one team — instead of coordinating 12 freelancers. Frontend, backend, mobile, devops, AI — all under one roof, Budapest-based.

ERP & enterprise portals

Inventory, orders, manufacturing, finance, CRM, B2B ordering portal. Two-way integration with SAP Business One HU, Microsoft Dynamics 365, BRG, RLB, BizXpert, OctoLion and Kulcs-Soft. Role-based access, multi-location, HUF + EUR/USD multi-currency accounting at MNB rate.

E-commerce & marketplace integration

eMAG (largest in HU), Vatera, Alza.hu, Árukereső, Extreme Digital, Telekom Webshop, Pepita, Jófogás. Product/stock/price sync from a single panel. Order automation, courier integration (Magyar Posta, GLS, DPD, FoxPost parcel lockers), returns workflow.

iOS & Android mobile app

Single codebase, two platforms with React Native. App Store + Google Play publishing included. Push notifications, offline mode, biometric login, in-app payment (OTP SimplePay, Barion, Stripe HU, K&H, OTP MobilePay).

AI & automation

Customer service chatbot (Hungarian), product description generator, NAV invoice OCR reader, smart stock forecasting, customer segmentation. Choice of OpenAI GPT-4, Claude or your own model — GDPR-compliant processing.

NAV Online Számla & accounting integration

NAV Online Számla real-time e-invoice integration (mandatory since 2024), EKAER reporting, ÁFA 27% return preparation. SAP B1 HU, MS Dynamics 365, BRG, RLB, BizXpert, OctoLion, Apex SQL, Kulcs-Soft, SZJA + TAO automation.

Industry-specific software

Logistics (TMS/WMS GLS + FoxPost), healthcare (EESZT integration), education (LMS), construction (NAV payroll), restaurant (POS + QR menu + Wolt/Foodora HU), real estate (CRM + listings), jewelry (live gold + stock). A team that speaks your industry.

Real results

Our Hungarian clients cut headcount and multiply revenue

One portal + one operator replaced 5 manual workers. Here are examples from Budapest and the regions.

Logistics

GLS / FoxPost parcel locker multi-warehouse TMS

1,400 daily shipments tracked in Excel; moved to QR/barcode mobile + desktop portal. GLS Hungary + FoxPost + DPD HU real-time sync.

📈 71% faster processing · back-office from 5 to 1
E-commerce

eMAG + Vatera + Alza.hu multi-channel

6 stores, 12,800 SKUs, 3 warehouses. Stock crashes caused overselling. Central panel + AI-predicted stock alerts + NAV Online Számla auto-issuance.

📈 0% overselling (was 14%) · 52 hours/month manual work saved
Healthcare

Dental network — EESZT integration

Appointments, patient records, panoramic X-ray viewer, EESZT integration, e-Prescription across 4 Budapest + 2 Debrecen clinics. iOS/Android patient app included.

📈 Appointment conflicts cut 92% · automatic EESZT sync
Construction

Construction + NAV payroll

On-site engineer logs daily hours, material requests and photo progress reports via mobile. NAV payroll + SZJA auto-deduction, EKAER reporting on shipments.

📈 Payroll prep from 6 days to 4 hours · 26% less cost variance
Restaurant

POS + QR menu + Wolt / Foodora HU integration

9-location restaurant chain in Budapest VII. and VI. districts. Waiters cut 38% — guests order via QR, Wolt + Foodora orders auto on kitchen display.

📈 Order errors cut 89% · table turnover up 28%
B2B

B2B portal + BRG + NAV Online Számla integration

210 resellers ordered by phone/email. B2B portal + two-way BRG integration + NAV Online Számla real-time issuance automated the order > invoice > shipping flow.

📈 Order entry from 16 min to 80 sec · 4 staff redeployed

How we work

From discovery to go-live — transparent, week by week

No months of agile waffle. Fixed price (HUF Ft), fixed date, weekly demos. No surprise invoices and no vanishing PM.

  1. 1
    Week 0

    Free discovery & quote

    We discuss your processes (60-90 min at our Budapest V./VI. district office or online). We map existing software, problems, goals. Within 3 business days you get a fixed-price (Ft + 27% ÁFA), module-by-module quote and timeline. No obligation.

  2. 2
    Week 1

    Design & approval

    Wireframe + clickable Figma prototype. We walk through screens together, you approve the final version. Data model, integration map (eMAG/SimplePay/NAV) and API spec documented.

  3. 3
    Weeks 2-4

    Development — AI-assisted

    Frontend + backend + mobile in parallel. Cursor + Claude/GPT-4 delivers code 40% faster. Weekly live demos + screencast. GitHub access open — you see the code. GDPR-compliant pipeline.

  4. 4
    Weeks 4-5

    Integration & testing

    BRG/Kulcs-Soft/SAP, NAV Online Számla, eMAG/Vatera/Alza.hu APIs, SimplePay/Barion payment gateway, GLS/FoxPost/DPD courier APIs — all integrated. UAT environment tested with your team. Bug list closed within 48 hours.

  5. 5
    Weeks 5-6

    Training & go-live

    2-3 live training sessions for your team in Hungarian (recorded). Server deploy (T-Systems/EzIT Hungarian hosting GDPR), SSL, backups, monitoring set. Soft launch — 1 week pilot users. Then full handover.

  6. 6
    Ongoing

    12-month warranty + maintenance contract

    12-month free bug-fix warranty. After that optional maintenance contract (hourly or monthly package in Ft). 24/7 monitoring — 99.9% uptime SLA. New features in monthly sprints.

COUNTRY-SPECIFIC

Built for the Hungary Market

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

Local Marketplaces

  • eMAG
  • Vatera
  • Árukereső
  • Allegro HU
  • Auchan Online

Carrier Integrations

  • Magyar Posta (MPL)
  • GLS Hungary
  • DPD Hungary
  • Foxpost
  • Sameday HU

Payment Methods

  • SimplePay (OTP)
  • Barion
  • Stripe
  • PayPal
  • K&H mobilbank

Compliance & Legal

  • GDPR / NAIH
  • NAV Online Számla
  • EKAER
  • KEKKH
  • ÁFA %27
  • NAV Online Számla
SUCCESS STORY

A şarap/gurme yiyecek ihracatçısı in Budapest

"eMAG + Amazon DE entegrasyonuyla 7 ayda 42K€ AB cirosu"

Custom quote

Every project is different — we prepare a custom quote

We do not give off-the-shelf price lists. We listen to your needs, clarify modules, and within 3 business days deliver a fixed-price (HUF Ft + 27% ÁFA) + fixed-date quote. The call is free, no obligation.

Included in every project

Whatever the scope, the following are standard — no extra charge.

  • ✓Fixed price (Ft) + fixed date guarantee (in contract)
  • ✓Module-by-module breakdown — no surprise invoices
  • ✓Weekly live demos + GitHub access (you see the code)
  • ✓AI-assisted development (Cursor + Claude/GPT-4) — 40% faster
  • ✓Design included — approved Figma prototypes
  • ✓5+ integrations (ERP, eMAG/Vatera, NAV Online Számla, SimplePay/Barion, GLS/FoxPost)
  • ✓iOS + Android mobile app (if needed)
  • ✓Multi-user, role-based access
  • ✓Hungarian GDPR-compliant hosting (T-Systems / EzIT) + SSL + backups + monitoring
  • ✓12-month free bug-fix warranty
  • ✓2-3 live training sessions for your team in Hungarian (recorded)
  • ✓Source code 100% yours — GitHub repo handed over, no vendor lock-in
Süre6-12 weeks · depending on scope
Garanti12-month free warranty + optional maintenance contract
Request free quote

What to bring to the discovery call

Bring these — we prepare an accurate quote in 60 minutes at our Budapest V./VI. district office or online.

  • ✓Brief summary of current workflow (who → what → how)
  • ✓Software currently used (Excel, BRG, Kulcs-Soft, SAP, website etc.)
  • ✓Problems / bottlenecks — what do you want to solve?
  • ✓Approximate user count (internal team + customers)
  • ✓Integration needs (eMAG/Vatera/Alza.hu, NAV Online Számla, SimplePay/Barion, GLS/FoxPost, BRG/Kulcs-Soft)
  • ✓Target go-live date + estimated budget range (Ft)

Request free discovery call

Fill out the form, we get back within 24 hours. Free 60-minute call in Budapest (V./VI. district), Debrecen, Szeged, Miskolc or Pécs — no obligation, NDA signed.

Frequently asked questions

What currency do you quote in — Ft or EUR?

All our quotes are in **Hungarian forints (HUF Ft) + 27% ÁFA** — the basis of transparency in the Hungarian market. EUR equivalent stated for reference at MNB daily rate. EUR invoicing is also possible (export deals, intra-EU reverse charge); we clarify this when signing the contract.

Where do you store our data — GDPR-compliant?

Yes — by default we place production servers on **Hungarian hosting** (T-Systems Magyarország or EzIT Budapest data center). NAIH-compliant and meets GDPR data residency. Backup copies encrypted. Data Processing Agreement (DPA) attached to the contract.

NAV Online Számla mandatory since 2024 — do you integrate it?

Yes, **mandatory integration partner**. NAV Online Számla real-time issuance (24-hour data reporting) is included in every ERP/B2B portal project. XML schema, technical user, key management — all in-house. EKAER reporting for shipments also integrable.

eMAG is the largest Hungarian marketplace — what features do you cover?

**eMAG Marketplace API priority partner**. Product/stock/price sync, order import, AWB printing (eMAG Fulfillment or own logistics), returns workflow, Genius badge management, campaign pricing, eMAG Pay integration. Vatera, Alza.hu, Árukereső, Extreme Digital, Pepita also supported.

How do you integrate FoxPost parcel lockers?

With the FoxPost REST API the customer selects a locker point on a map at checkout. After ordering, label + AWB auto-generated. Tracking webhook reports back in real time. GLS Hungary, DPD Hungary, Magyar Posta, Express One, DHL HU and FedEx HU go through the same unified layer.

Which payment providers do you work with?

**OTP SimplePay** (market leader), **Barion**, **Stripe HU**, **K&H mPOS**, **Borgun**, **OTP MobilePay**. SCA / Strong Customer Authentication (3DS2) standard. Recurring billing, instalments, refund flow integrated. ÁFA 27% correct on invoice + NAV Online Számla.

Software firms usually deliver late — what guarantee do you give?

We work on a fixed-price (Ft) + fixed-date model. Delivery date is in the contract; we pay a 3% weekly penalty if delayed (max 20%). This is possible because we tightly define scope upfront, prevent scope creep, and use AI-assisted code. 23 of our last 24 projects delivered on time or earlier.

Do you hand over the code, or do we stay dependent on you?

**The code is 100% yours.** GitHub repo handed over for free. You can continue with any other software firm (Budapest, Debrecen etc.) or hire your own developers. Vendor lock-in is not our model — we retain clients through quality, not contracts.

Have you built software for our industry in Hungary?

Logistics (GLS/FoxPost), e-commerce (eMAG/Vatera/Alza.hu), healthcare (EESZT), education, construction (NAV payroll), restaurants (Wolt/Foodora HU), real estate, jewelry, B2B textile, retail — we have live Budapest or regional projects in all of these. If your industry is not listed, we introduce 1-2 similar clients in the call.

🇹🇷 TR🇬🇧 EN🇩🇪 DE🇫🇷 FR🇪🇸 ES🇮🇹 IT🇵🇹 PT🇳🇱 NL🇵🇱 PL🇭🇺 HU🇬🇷 EL🇸🇦 AR🇨🇳 ZH🇯🇵 JA

Custom Software Development in Hungary

Hungarian enterprise software revolves around three ecosystems: NAV Online Számla (real-time fiscal data), EKAER (road-transport goods tracking) and the domestic accounting stack (KULCS-SOFT, RLB-60, SAP Hungary). No B2B product ships without touching all three.

NAV Online Számla API — Non-Negotiable

The NAV Online Számla 3.0 XML schema is consumed via REST with PKI-signed payloads. Implementation notes:

  • Sandbox: api-test.onlineszamla.nav.gov.hu
  • Production: api.onlineszamla.nav.gov.hu
  • Token lifetime: 5 minutes; mint per batch.
  • Idempotency: transactionId unique per POST.
  • Error codes: INVALID_REQUEST, OPERATION_FAILED, INVOICE_SCHEMA_VALIDATION_ERROR.

EKAER — Road Transport Reporting

EKAER (Elektronikus Közúti Áruforgalom Ellenőrző Rendszer) requires pre-notification to NAV for all road-borne goods crossing the Hungarian border (and many domestic routes). Logistics and FMCG software must wire EKAER into shipment creation: vehicle plate, origin/destination addresses, product code, weight.

Domestic ERP / Accounting Connectors

  • KULCS-SOFT — Hungarian SMB accounting leader, REST + XML export.
  • RLB-60 — small accounting offices, CSV / XML.
  • SAP Hungary — large enterprises (Audi, Mercedes); IDoc, OData, SAP CPI.
  • Számlázz.hu — popular SaaS invoicing; REST API.

Payment SDKs: SimplePay + Barion

SimplePay v2 uses REST + HMAC SHA384 + IPN webhooks. Barion Smart Gateway adds tokenisation, recurring billing and wallet UX — preferred for gaming and subscriptions.

Carrier APIs: Magyar Posta, GLS, Foxpost

Magyar Posta MPL exposes SOAP; GLS Hungary and Foxpost expose REST with barcode label PDF endpoints. Wrap them behind a multi-carrier abstraction layer so the routing engine can select the cheapest service per parcel.

Data Residency and Hosting

NAIH requires personal data to remain inside the EU. Beyond AWS Frankfurt and Hetzner Helsinki, Magyar Telekom T-Systems's Budapest cloud is the in-country default.

Automotive Supply-Chain Integrations

Tier-1 suppliers to Audi Győr, Mercedes Kecskemét, BMW Debrecen and Suzuki Esztergom run on SAP IDocs, EDI VDA 4905/4913 and JIT/JIS sequenced delivery. Hungarian custom software must speak these formats out of the box.

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