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๐Ÿ’ป 12-year software company โ€” AI-assisted development

Software company in Spain โ€” Half the cost of your own team

ERP, B2B/B2C portals, accounting integration, sector-specific software. Our 12-year team builds with leading-edge tech; we automate manual work and reduce headcount needs. Fixed price, 12-month warranty.

โœ“ Go-live in 6-12 weeksโœ“ AI-assisted development ยท 40% fasterโœ“ 12-month free maintenance warranty
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Custom software dashboard preview

Technologies and integrations we work with

Next.jsNestJSPostgreSQLReact NativeAmazon ES APIEl Corte Inglรฉs APISAP Business OneHoldedAEAT ยท SII ยท VerifactuStripe ยท Bizum ยท RedsysOpenAI ยท ClaudeAWS ยท OVH Spain

From custom software to AI โ€” full in-house stack

One quote, one team โ€” instead of coordinating 12 freelancers. Frontend, backend, mobile, devops, AI โ€” all under our roof, with Madrid office.

ERP & enterprise portals

Stock, orders, production, finance, CRM, B2B portal. Two-way integration with SAP Business One, Sage 50/200, Holded, A3 ASESOR. Role-based permissions, multi-branch, multi-currency accounting, automatic SII submission.

E-commerce & marketplace integration

Amazon ES, El Corte Inglรฉs, PcComponentes, Carrefour, Worten, AliExpress ES, Fnac ES, MediaMarkt ES. Product/stock/price sync from a single panel. Order automation, logistics integration (SEUR/Correos/Nacex/MRW), returns management.

iOS & Android apps

One codebase, two platforms with React Native. App Store + Google Play publishing included. Push notifications, offline mode, biometric login, in-app payments (Stripe/Bizum/Redsys/Adyen).

Artificial intelligence & automation

Customer-service chatbot, description generator, invoice OCR, smart stock forecasting, customer segmentation. With OpenAI GPT-4, Claude or our own model, hosted on OVH/IONOS Spain under GDPR.

Accounting & AEAT fiscal integration

SII (Suministro Inmediato de Informaciรณn) integration, Verifactu, TicketBAI (Basque Country), Modelo 303/390/347. Native connectors with SAP Business One, Sage, Holded, A3, ContaSimple, FacturaDirecta, Quipu. VAT 21% + IGIC 7% (Canary Islands) + IPSI (Ceuta/Melilla).

Sector-specific software

Logistics (TMS/WMS), clinics (SNS/Sanidad integration), education (LMS), construction (site + TC1/TC2 payroll), restaurants (POS+QR menu+Glovo/JustEat), real estate (CRM+Idealista/Fotocasa listings), retail. A team that speaks your sector.

Our clients cut headcount and multiply revenue

One panel + one operator replaced 5 people doing manual work. A few examples from the Spanish market.

Logistics

SEUR multi-warehouse TMS

1,200 daily shipments managed in Excel; migrated to a mobile + desktop panel with QR/barcode. SEUR/Correos/Nacex API integration, real-time warehouse-HQ sync.

๐Ÿ“ˆ 68% faster ยท back-office cut from 4 to 1 person
E-commerce

Amazon ES + El Corte Inglรฉs + Carrefour multi-channel

8 stores, 14,000 SKUs, 4 peninsular warehouses. Stock dropouts caused oversells. Central panel + AI stock alerts + Holded integration for SII invoicing.

๐Ÿ“ˆ 0% oversell (was 12%) ยท 47 hrs/month manual work saved
Healthcare

Dental clinic โ€” SNS / Sanidad integration

Appointments, patient records, panoramic X-ray viewer, integration with Health Card (Tarjeta Sanitaria), e-prescription across 6 branches (Madrid + Barcelona). iOS/Android patient app included.

๐Ÿ“ˆ Appointment conflicts down 94% ยท automatic e-prescription
Construction

Site + TC1/TC2 payroll

Site engineer files daily reports, material requests and progress photos from mobile. Automatic TC1/TC2 generation for Social Security. Live dashboard for project manager.

๐Ÿ“ˆ Certification from 5 days to 4 hours ยท 23% less cost overrun
Restaurants

POS + QR menu + Glovo / JustEat integration

12-restaurant chain in Madrid. Floor staff reduced 40% โ€” diners order via QR and kitchen screen updates itself. Glovo/JustEat/UberEats orders consolidated into one KDS.

๐Ÿ“ˆ Order errors down 91% ยท table turnover +26%
B2B

B2B Portal + Holded + SII integration

180 distributors ordering via phone/WhatsApp. A B2B portal + two-way Holded integration automated order > invoice > shipment > real-time SII submission to AEAT.

๐Ÿ“ˆ Order intake from 14 min to 90 sec ยท 3 people reassigned

From discovery to go-live โ€” transparent, week by week

No months of agile jargon. Fixed price, fixed deadline, weekly demos. No surprise invoices, no disappeared PMs.

  1. 1
    Week 0

    Discovery & free quote

    We talk through your processes (60-90 min, in-person Madrid or video call). We map current software, problems and goals. In 3 working days you get a fixed-price quote, module by module, with timeline. No commitment.

  2. 2
    Week 1

    Design & approval

    Wireframes + clickable Figma prototype. We walk through the screens together and you approve the final version. Data model, integration map and API spec are documented.

  3. 3
    Weeks 2-4

    Development โ€” AI-assisted

    Frontend + backend + mobile in parallel. Cursor + Claude/GPT-4 deliver code 40% faster. Weekly live demos + screencasts. Open GitHub access โ€” you see the code.

  4. 4
    Weeks 4-5

    Integration & testing

    SAP/Sage/Holded, SII AEAT, marketplace APIs, Stripe/Bizum/Redsys, SEUR/Correos APIs โ€” all integrated. UAT with your team. Bug list closed in 48 hours.

  5. 5
    Weeks 5-6

    Training & go-live

    2-3 live training sessions (recorded). Deployment to OVH/IONOS Spain server under GDPR, SSL, backups and monitoring. Soft launch โ€” 1 week with pilot users. Then full handover.

  6. 6
    Ongoing

    12-month warranty + maintenance contract

    12 months of free bug-fix warranty. Then optional maintenance contract (hourly or monthly package). 24/7 monitoring โ€” 99.9% SLA. New features in monthly sprints.

COUNTRY-SPECIFIC

Built for the Spain Market

Local marketplaces, carriers, payment methods and compliance frameworks โ€” from a single panel

Local Marketplaces

  • Amazon.es
  • El Corte Inglรฉs
  • PcComponentes
  • Carrefour.es
  • AliExpress ES
  • Worten

Carrier Integrations

  • SEUR
  • MRW
  • Correos
  • Nacex
  • GLS
  • Tipsa

Payment Methods

  • BizumES
  • Redsys (TPV)
  • Stripe
  • PayPal
  • AplazameBNPL
  • KlarnaBNPL

Compliance & Legal

  • RGPD / LOPDGDD
  • AEPD
  • FACE
  • Modelo 303/390
  • IVA %21
  • Facturae / FACE
SUCCESS STORY

A B2B endรผstriyel ekipman in Barcelona

"PcComponentes + Amazon.es entegrasyonuyla 4 ayda 200Kโ‚ฌ ciro"

Every project is different โ€” we prepare a tailored quote

No off-the-shelf rates. We hear your need, define the modules and deliver a fixed-price + fixed-deadline quote in 3 working days. The call is free and no-commitment.

Included in every project

Whatever the scope, the following is delivered as standard โ€” at no extra cost.

  • โœ“Fixed-price + fixed-deadline guarantee (in contract)
  • โœ“Module-by-module breakdown โ€” no surprise invoices
  • โœ“Weekly live demos + GitHub access (you see the code)
  • โœ“AI-assisted development (Cursor + Claude/GPT-4) โ€” 40% faster
  • โœ“Design included โ€” approved Figma prototypes
  • โœ“5+ integrations (ERP, marketplaces, SII AEAT, payments, shipping)
  • โœ“iOS + Android app (if applicable)
  • โœ“Multi-user, role-based permissions, GDPR compliant
  • โœ“OVH/IONOS Spain hosting + SSL + backups + monitoring
  • โœ“12 months free bug-fix warranty
  • โœ“2-3 live training sessions (recorded)
  • โœ“100% your source code โ€” GitHub repo handed over, no vendor lock-in
Sรผre6-12 weeks ยท scope-dependent
Garanti12-month free warranty + optional maintenance contract
Request free quote

What to bring to the discovery call

Bring these โ€” in 60 minutes we produce an accurate quote.

  • โœ“Brief summary of your current flow (who โ†’ what โ†’ how)
  • โœ“Software you use today (Excel, SAP, Sage, Holded, web, etc.)
  • โœ“Problems / bottlenecks โ€” what do you want to solve?
  • โœ“Approximate user count (internal team + clients)
  • โœ“Integration needs (marketplace, bank, SEUR/Correos, SII AEAT, payments)
  • โœ“Target go-live date + estimated budget range

Free discovery call request

Fill in the form and we contact you within 24 hours. Free 60-minute call โ€” no commitment, and we do not steal your idea (NDA signed under GDPR).

Frequently asked questions

Software companies usually deliver late โ€” what guarantee do you give?

We work fixed-price + fixed-deadline. The delivery date is in the contract; if we are late, we pay a 3% weekly penalty (max 20%). We pull this off because we lock scope strictly from the start, avoid scope creep and use AI-assisted code. 23 of our last 24 projects were delivered on time or early (references shared on the call).

Do you give us the code or are we stuck with you?

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

You use AI โ€” is the quality not worse than human code?

Quite the opposite. Our senior developer with Cursor + Claude/GPT-4 ships ~40% faster and with 25% fewer bugs than a solo developer (our own measurement). AI writes code, but architecture, code review and tests are done by our 12-year team. Result: same quality, faster, cheaper.

How do you handle SII and Verifactu from AEAT?

We specialise in SII (Suministro Inmediato de Informaciรณn) โ€” all issued/received invoices are sent to AEAT within 4 calendar days via signed XML WebService. We implement Verifactu per RD 1007/2023; each invoice carries QR code + chained hash + tamper-proof fingerprint. For clients in the Basque Country, we integrate TicketBAI (Bizkaia/Gipuzkoa/Araba) with BatuZ XML. Forms 303/390/347 generated automatically.

And IGIC in the Canary Islands or IPSI in Ceuta/Melilla?

Supported out of the box. The ERP detects the billing province and applies the correct tax regime: VAT 21%/10%/4% peninsular, IGIC 7%/3%/0% in Canary Islands (with Form 420 submission), IPSI in Ceuta and Melilla. Multi-rate within a single invoice when there are mixed lines. Compatible with REDEME and cash-basis regimes.

Which marketplaces and systems do you integrate?

**Marketplaces:** Amazon ES, El Corte Inglรฉs, PcComponentes, Carrefour, Worten, AliExpress ES, Fnac ES, MediaMarkt ES, Miravia, Privalia, Amazon EU/US, eBay, Bol.com, Allegro. **ERP/Accounting:** SAP Business One, Sage 50/200, Holded, A3 ASESOR, ContaSimple, FacturaDirecta, Quipu, Odoo. **Fiscal:** SII AEAT, Verifactu, TicketBAI. **Payments:** Stripe ES, Bizum, Redsys, Adyen, PayPal, BBVA/Santander virtual POS. **Shipping:** SEUR, Correos, Nacex, MRW, Tipsa, GLS Spain, DHL Spain. If the system has REST/SOAP API, we integrate it.

Where is the software hosted? Is it GDPR compliant?

We host on OVHcloud Strasbourg, Aruba Italy or IONOS Madrid โ€” European datacenters certified ISO 27001 + GDPR. Personal data never leaves the EU. We sign DPA (Data Processing Agreement) and provide the Record of Processing Activities audit-ready. If you need an on-premise server in your office, that is also possible.

What if I skip the maintenance contract? Does the software fall over?

No โ€” the code is yours and you operate it. During the 12-month warranty, all bugs are on us. After that: (1) continue with your own developer, (2) monthly contract with us (packages: 8 h/month โ‚ฌ580 โ€” 40 h/month โ‚ฌ2,400), (3) hourly support (โ‚ฌ95/h). No contractual obligation. VAT 21% separate.

Custom Software Development In Spain

Clarify cost, setup, local fit and operations for custom software development in Spain with ZunaPro.

Custom Software Development In Spain Guide

Companies searching for custom software development in Spain usually compare more than the service name. They look for cost, timeline, a reliable team, local fit and the speed at which the project can become usable.

The page should answer technical and commercial questions together. A visitor needs to understand what will be done, in which order and what will be delivered.

ZunaPro brings workflow analysis, integrations, admin panels, reporting, automation, security and maintainable delivery into one plan. The work does not stay as a design or setup task; it becomes an operating structure the team can actually use.

In Spain, language, payment habits, documentation expectations, delivery or support models can directly influence the result. Discussing these points early reduces rework.

In Spain local Bizum/Visa acceptance, IVA-clear pricing and a Spanish phone line raise conversion.

What To Clarify Before You Start

Before requesting a quote or starting the project, these points should be clear.

  • Process Analysis: With the right structure, teams stop recreating the same information in different places. Sales, operations, support and management can make decisions from one shared source.
  • Integrations: ZunaPro turns custom software development into a measurable and durable software system aligned with real business workflows by managing scope, technical setup, content structure, tracking and improvement together.
  • Panel And Reporting: Looking only at the starting price can be misleading. Maintenance, integrations, number of languages, reporting and security requirements shape the real value.
  • Security And Maintenance: A strong service page clearly explains what the buyer gets, what stages they pass through and which workload is removed from their team.

Scope And Implementation Plan

Decision, Setup And Ongoing Management

Each Row Answers A Practical Buyer Question.

TopicWhat It ClarifiesWhat ZunaPro Does
Process AnalysisClarifies expectations, data and responsibility for Process Analysis.Connects Process Analysis to proposal, setup and ongoing management.
IntegrationsClarifies expectations, data and responsibility for Integrations.Connects Integrations to proposal, setup and ongoing management.
Panel And ReportingClarifies expectations, data and responsibility for Panel And Reporting.Connects Panel And Reporting to proposal, setup and ongoing management.
Security And MaintenanceClarifies expectations, data and responsibility for Security And Maintenance.Connects Security And Maintenance to proposal, setup and ongoing management.

Process Analysis Quality Check

Maintenance And Improvement

Process Analysis sets the plan for how custom software development should be delivered in Spain. Scope, timeline and responsibility are written down at this stage so revisions stay rare. Once the plan is locked each team sees its own boundary and small details that look minor at first are still included in the proposal.

When the Process Analysis plan moves to the field, internal roles, approval chains and reporting cadence are defined too. Progress is measured at fixed checkpoints instead of constant meetings, and decisions follow a process rather than a single person.

  • Target user and decision maker definition
  • Needs list with priority order
  • Internal responsibility split
  • Success criteria and measurement method
  • Question list for the kickoff meeting

Expectations And Responsibilities

In practice, Process Analysis should run as a short loop that includes team reviews, customer feedback and real data from the field. At the end of each loop the owner, timeline and expected output of the next step are written down so progress depends on a system, not on a single person.

ZunaPro turns custom software development into a measurable and durable software system aligned with real business workflows by managing scope, technical setup, content structure, tracking and improvement together.

How Integrations Affects The Outcome

Customer Experience

During Integrations, the buyer needs to see which step happens in which order and what is delivered. Local language, payment and compliance details for Spain are discussed here. A transparent process shortens revision cycles, reduces knowledge loss between teams and keeps the delivery calendar reliable.

During Integrations, real user scenarios from the Spain market are tested. Whether the local customer prefers phone, message or a form, and where they hesitate during payment, becomes visible at this stage.

  • Step-by-step workflow and delivery calendar
  • Approval and revision count
  • Migration and test plan
  • Pre-launch acceptance criteria
  • Rollback and emergency plan

On The Ground

A small but critical detail in Integrations is the content approval chain. Every sentence going live in Spain should be reviewed once more by a local reader; this protects brand tone, legal fit and conversion potential at the same time.

Looking only at the starting price can be misleading. Maintenance, integrations, number of languages, reporting and security requirements shape the real value.

Panel And Reporting Details And Tips

Pre Work

Panel And Reporting is the area that creates the gap between a quote and the real cost. For brands researching Custom Software Development, scope width, content production and integrations shape the total budget. When cost lines are listed individually, comparing offers becomes easier and ROI can be measured from the start.

To read the Panel And Reporting cost line correctly, one-time and monthly figures must sit on separate rows. As scale grows in Spain, integrations, content updates and reporting drive most of the recurring spend.

  • One-time setup cost
  • Monthly maintenance line
  • Extra module or integration fee
  • Local language and content production cost
  • Cost lines that change with scale

Risks And Mitigation

The Panel And Reporting cost line requires the recurring and variable parts to be visible in writing. Growth decisions like a seasonal campaign, an extra language or a new product category should already be marked on the budget.

A strong service page clearly explains what the buyer gets, what stages they pass through and which workload is removed from their team.

Security And Maintenance Step By Step

Local Compliance

Security And Maintenance keeps living after launch. To keep selling in Spain, maintenance, reporting and content updates must be planned from day one. Without a clear post-launch plan a project erodes within months; a steady support routine keeps brand value intact.

The Security And Maintenance block must turn into a loop of analysis, content refresh, campaign work and technical maintenance. As traffic grows in Spain, every part of this loop needs a clear owner.

  • Performance and error monitoring
  • Content update routine
  • Scale plan for growth
  • Seasonal campaign preparation
  • Customer feedback loop

Measurement And Tracking

The Security And Maintenance block must be fed continuously with customer questions, support tickets and performance data. As live traffic grows in Spain, the behaviour patterns that emerge are the most valuable input for setting the priorities of the next release.

Companies searching for custom software development in Spain usually compare more than the service name. They look for cost, timeline, a reliable team, local fit and the speed at which the project can become usable.

Custom Software Development Process Steps For Spain

Typical Flow From Kickoff To Launch

Every project is different, yet custom software development work in Spain usually follows a similar order. The steps below summarise the practical path from the first call to going live and clarify what to look for when reading a proposal.

  1. Discovery call: needs list, target market and delivery date are discussed; both sides agree on shared language.
  2. Plan and proposal: scope, cost lines and timeline are written down; revision rules are made explicit.
  3. Preparation: brand assets, content, visuals and technical requirements are gathered in one folder; ownership is listed.
  4. Implementation: design, setup, integrations and content placement run in parallel with regular checkpoints.
  5. Testing and launch: acceptance criteria are checked, a final pre-launch test is run, and going live happens on plan.
  6. Ongoing support: maintenance, reporting and content updates continue at an agreed cadence after launch.

Common Mistakes

What To Watch When Buying Custom Software Development In Spain

Many companies make a custom software development decision based only on the starting price. Maintenance cost, local fit and missing reporting often force the project to be rebuilt months later.

  • Teams that quote a single price and later add revision or maintenance fees
  • Local language, payment or shipping habits not discussed during the quote
  • No clear ownership of content production
  • Maintenance, security updates and reporting not included in the proposal
  • Marketplace, e-invoice or payment integrations left out of the initial scope

Spain Market Note

Local Expectations And Operational Detail

When planning custom software development for Spain, local language, payment habits and official procedures should be discussed early. Customer trust is built when contact, invoicing, delivery and support stay consistent.

Spain requires attention to the Madrid-Barcelona axis, access to Portugal and seasonal demand swings.

In Spain, language, payment habits, documentation expectations, delivery or support models can directly influence the result. Discussing these points early reduces rework.

In Spain local Bizum/Visa acceptance, IVA-clear pricing and a Spanish phone line raise conversion.

Typical Customer Scenarios In The Spain Market

How Custom Software Development Needs Look At Different Scales

The three scenarios below show how custom software development positions itself at different scales in the Spain market. The goal is for each business to spot the profile closest to its own situation and to ask the right questions from the start.

  • Newly launched small brand: Priority is fast launch and a low monthly cost. In Spain, starting with pre-launch preparation, local language, simple payment and a single contact channel is correct. Maintenance stays small at first and reporting and campaign layers are added as growth becomes visible.
  • Growing mid-sized business: At this profile custom software development decisions can no longer sit on a single person. In Spain multiple channels, extra languages and higher daily order volume come into play; reporting, automation and a steady content refresh become critical.
  • Enterprise-scale brand: The priority here is steady growth, an auditable process and a horizontally scalable infrastructure. Beyond Spain, expansion to neighbouring markets, multilingual management, advanced reporting and KPI-based support become a must.

What Drives The Cost

How To Read A Custom Software Development Proposal

A custom software development proposal for Spain should show its components clearly. Itemised quotes prevent later surprises and make comparison between providers possible.

  • Scope width, page or screen count
  • Design depth and customisation level
  • Integrations, reporting and automation needs
  • Local language, content production and visual preparation
  • Maintenance, hosting, security and support model

Post-Launch Ongoing Support

For Sustainable Results In The Spain Market

The value of Custom Software Development comes not from launch day but from the steady support that follows. As customer behaviour, campaigns and technical needs in Spain change, the site, system or operation must adapt with them.

With the right structure, teams stop recreating the same information in different places. Sales, operations, support and management can make decisions from one shared source.

  • Monthly performance report with a short action list
  • Content, visual and campaign refresh routine
  • Security updates and technical maintenance calendar
  • Advisory for new integrations or module needs
  • Capacity and speed check before seasonal peaks

Frequently Asked Questions

Who is this service for?

It suits companies entering a new market, improving digital sales or organizing an existing operation.

What should be prepared first?

Target market, service scope, languages, payment or contact flows and technical needs should be assessed together.

What affects pricing?

Scope, integrations, content depth, design needs, official requirements and support model affect pricing.

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