S.01 / SEVILLE

Custom software development in Seville, built by the person you talk to.

I design and build custom software for businesses in Seville: internal web applications, CRMs, integrations and the modernization of legacy systems, shaped around how your team actually works. I work with businesses across Spain, travel to Seville for larger projects, and you always talk to the person who builds it.

Tell me the problem View case studies

02 / WHAT I BUILD

Custom software in Seville: what I build.

Four common pieces once a business has outgrown standard tools. Each one has its own page with the details.

01
Custom web application
The internal tool that replaces the spreadsheet that became a system: requests, approvals, tracking and dashboards for your team.
Custom web application
02
Custom CRM
Pipeline, records and follow-up designed around your sales process, when HubSpot, Salesforce or Zoho make your team work around them.
Custom CRM for businesses
03
Legacy modernization
The fifteen-year-old program that still runs operations, replaced in phases without losing data, history or URLs.
EvidenceRocio.com
Legacy system modernization
04
Integrations and Verifactu
ERP, CRM, online store and invoicing connected so data is entered once, including the integration with Spain’s Verifactu e-invoicing system.
Verifactu API

03 / LOCAL WORK

Projects in Andalusia.

Systems that exist and can be seen. What they do is documented in each case study; no invented figures.

Editorial platform

Rocio.com

An Andalusian archive going back to 1992, taken out of WordPress and rebuilt as its own platform, with an AI assistant that answers questions about it.

11,596 news articles and 169 brotherhoods migrated to a normalized data model.
A custom editorial panel and redirects from the old URLs.
“Ask the archive”: an assistant that answers about news, brotherhoods and sevillanas.
A conversation viewer with cost, latency and ratings.

STACK Nuxt / Vue / MySQL

Case study: Rocio.com

The Andalusia pavilion at FITUR 2024 under the Andalusian Crush campaign, with visitors and large-format screens. — FITUR 2024 · Andalusian Crush pavilion

Physical + digital

Event Tech

Systems for the Andalusia Tourism pavilions at FITUR, ITB and WTM, which have to work live on a fixed date.

Andalusian Crush Smart Pavilion (FITUR 2024): dynamic content and data on 4K video walls.
Andalusian Crush Link (ITB and WTM 2024–2026): table bookings with tablets and NFC/QR.
Real-time occupancy and data displays for the stand team.

STACK Laravel / Vue / Nuxt

Case study: Event Tech

04 / HOW I WORK

How I work with businesses in Seville.

I work with businesses across Spain. A system is built the same way wherever you are, but it is worth being clear about how we coordinate.

REMOTE
Day-to-day work over video calls, WhatsApp, phone and email. Decisions are written down.
ON SITE
For larger projects I travel to Seville for the kickoff, to see the process where it happens and for the launch.
DELIVERIES
Short releases your team can use from the first month, instead of one big launch at the end.
OWNERSHIP
The repository, credentials and data in your company’s name from day one.

05 / WHO BUILDS IT

A software company in Seville or a specialist: what changes for you.

Seville has software companies with large teams, and for some projects they are the better choice. This is the honest line.

Working with me fits if…

You want the person who understands your business to be the one writing the code, with no account managers in between.
The project can start with one specific piece and grow from there.
You care about being able to understand, maintain and change the system five years from now.

A larger company is better if…

You need a team of several full-time people from the first month.
You need daily on-site support or 24/7 on-call cover.
Your product is already designed and you only need extra development capacity.

06 / PRICE

How much custom software costs and how long it takes.

I do not give fixed prices without seeing the problem: cost depends on the scope of the first version, the integrations, the state of the data and the business rules. What I always do is propose the smallest first piece that already delivers value, live within weeks, and grow from there.

What drives the cost of custom software

07 / QUESTIONS

Questions about custom software in Seville.

Do you meet in person in Seville?

For larger projects, yes: I travel for the kickoff, to see the process on site and for the launch. Day-to-day follow-up happens over video calls, WhatsApp, phone and email.

Do you only work with businesses in Seville?

No. I work with businesses across Spain and abroad. I have projects in Seville and across Andalusia, but the way I work is the same for every client.

How I work

How much does custom software cost in Seville?

It depends on the scope of the first version, the integrations, the state of the data and the business rules, not on the city. The quote comes after reviewing the problem and starts with the smallest useful version.

What drives the cost of custom software

Do you work with small businesses?

Yes. Many projects start with a single piece, such as an internal application, a CRM or an integration, that already solves a specific problem. You do not need a big project to get started.

We have an old system. Can any of it be kept?

Almost always: the data, the rules that work or the URLs that already rank. Modernization happens in phases, with the old system running until the new one replaces it.

Legacy modernization

08 / SAME SYSTEM

Related systems.

A business problem rarely lives in a single piece. These usually appear in the same project.

All systems

Has your Seville business outgrown standard tools?

Tell me the problem, the data and the objective. The first conversation is a video call, and you do not need to know yet what has to be built.

Tell me the problem or email me at andres@andresrl.es