Zumaquero DevCustom software development in Málaga
10+ years building production software for banking, retail and telecoms. Now I build internal tools, management dashboards and integrations for companies and professionals who have run out of room with Excel, WhatsApp and tools that don't talk to each other.
What custom software is and when it's worth it
Custom software is anything built to solve your specific process, rather than adapting the way you work to a generic tool. It isn't always the answer: if an off-the-shelf product covers what you need, the sensible thing is to use it. Custom development is worth it when the process is spread across spreadsheets, messages and applications that don't talk to each other; when that process is part of your competitive advantage; or when market tools force you to pay for modules you don't use and still don't fit how you work.
In practice, the decision is made in the review: I look at what you already have, what it costs to maintain and which part of the problem a build of your own genuinely solves. If the answer is "a template will do", I tell you.
What kind of software I build
The focus is the software that keeps a company's operation running from the inside, with one technical standard: clear architecture, code tested on the critical logic and justified decisions.
- Internal tools and management dashboards for when Excel, WhatsApp and loose spreadsheets fall short.
- Integrations between systems that don't talk today: website, ERP, CRM, invoicing, payment gateways.
- Modernisation of existing applications that work but cost more and more to maintain.
- Automation of repetitive administrative processes: registrations, reports, reconciliations, sending.
- Corporate websites, online shops and native Android apps, with the same production-project discipline.
Common use cases
These aren't closed products: they're frequent starting points that get adjusted to how each company works.
- Operations management: tracking orders, projects, sites or services in a single place.
- Internal dashboards: the data that lives in several Excel files today, in one view with role-based permissions.
- Client management: records, history and status without building a huge CRM nobody uses.
- Bookings and appointments: availability, confirmations and reminders without relying on phone calls.
- Sales processes: quotes, follow-up and conversion to invoice without retyping the data three times.
How I work
Free review, a fixed written proposal before starting (scope, timeline and price), development with reviewable progress from the first week and, on delivery, you decide whether you need ongoing maintenance. You always talk to the person who writes the code: no salespeople in between and no brief lost between departments.
Senior profile, not a junior with a template
More than 10 years writing software that runs in production with thousands of simultaneous users, in sectors where a failure has real consequences. That translates into knowing which technical decisions become expensive a year from now and which don't, and into delivering code that someone else can maintain three years from now.
Contact
- Name
- Zumaquero Dev
- Phone
- +34 692 238 980
- Address
- C/ Espíritu Santo 23, Coín (29100), Málaga
Keep reading
- If the software already exists but another company built it and now nobody wants to touch it: legacy software rescue.
- If the process you want to improve is repetitive and you're wondering whether AI can take on part of it: AI process automation.
- If your business runs on shared spreadsheets that have outgrown their purpose: moving from a spreadsheet to a custom app.
- If what you need is a website that loads fast and turns visits into enquiries: custom corporate and personal websites.
- If you sell online and the checkout falls over during traffic peaks: online shop development.
- If your project is a mobile app: Android app development.
- If the software is already built and the problem is that nobody looks after it: software maintenance plans.
Frequently asked questions
How much does custom software development cost?
It depends on the functional scope and the integrations. As a reference, a custom website starts from 900 €, an online shop from 1.800 € and an Android app from 3.000 €. The specific figure always goes in the fixed proposal, before starting, with no extra hours billed.
Who owns the code when it's finished?
You do. On completion you receive the full source code, documented and with version control, with no dependency on me to keep operating if you decide not to continue with maintenance.
Do you only work with companies in Málaga?
I work from Málaga and Coín, with in-person meetings possible across the province and remotely for everywhere else. Being close by helps, but it isn't a requirement for working together.
Do you use artificial intelligence to develop?
I use it as a tool to speed up specific tasks, with judgement and reviewing what it produces. It doesn't replace architecture decisions or responsibility for the code I deliver.
Got a software project on your hands?
Tell me in two minutes what you need and I'll come back with a real review, not a sales template.