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Custom Software Development

Custom software that fits your business.

More than 100 projects. Developing software since 2012

Our unique system combined with AI delivers faster results.

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Oriol Lanuza

Oriol Lanuza

Backend development and DevOps
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Adapting your company to the software is a mistake; the software should adapt to you. We develop tools with Django and Python that eliminate manual work in Excel and connect legacy systems that do not communicate with each other, automating your business operations.

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Software That Works The Way You Work

Does your business rely on Excel spreadsheets, manual processes, or systems that don't communicate with each other?

Custom software makes sense when standard tools cannot support an important business process. We start with how your team works to define what to automate, what to keep and which systems to connect.

We deliver a solution the team can validate in stages, with the agreed permissions, integrations and training. Before connecting an ERP or CRM, we check its APIs, data and provider requirements.

In Quiralis, we brought together medical procedures, authorizations and billing through a gradual rollout that allowed existing processes to run alongside the new system.

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From Your Problem to Your Solution

Our custom software development process begins with understanding your business, not writing code. Every technical decision is driven by a business objective.

  • Process Analysis

    We map your current operations to identify bottlenecks and automation opportunities. We understand how your team works before proposing solutions.

  • Solution Design

    We define the custom software architecture: which systems to connect, which processes to digitize, and which API integrations are necessary. We prioritize features based on their impact on your efficiency .

  • Prototyping and Validation

    We design interfaces and workflows that your team validates before development. We detect conceptual errors when correcting them is inexpensive, not after the software is already built.

  • Iterative Development

    We build in cycles. You see real progress from the start: working software, not presentations. You can adjust priorities as your business evolves.

  • Integration with your systems

    We connect the software to the systems validated during the analysis. We prioritise available APIs and define validation, permissions and handling of synchronisation errors. We test the workflow with representative data and agree a progressive rollout with the team that will use it.

  • Deployment and Training

    We implement on your infrastructure or in the cloud. We train your team to take full advantage of every feature. Software only generates value when it's used.

  • Continuous Evolution

    Your business changes, and so does your custom software . Maintenance, new features, adaptation to new processes. We grow with you.

Why Mecexis for your Custom Software Development

We don't sell programming hours. We solve business problems.

Custom software development isn't about technology: it's about understanding what your company needs and building exactly that. Nothing more, nothing less.

We've helped companies eliminate processes that consumed days of manual work through intelligent automation . We've connected systems that hadn't communicated for years, unlocking data that no one could use. We've modernized legacy systems without forcing them to discard what was working.

We work with Django, the Python framework used by Instagram and Spotify when they need scalable systems. But what sets us apart isn't the technology: it's that every line of code addresses a real problem in your business. No over-engineering, no features no one will ask for. Custom software means exactly that: tailored to your needs.

A single team develops your backend, your frontend, and manages your infrastructure. When something goes wrong, there's no finger-pointing between vendors. We diagnose, fix, and follow through.

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Related projects

Discover how we have helped our clients achieve their goals with innovative digital solutions.

We create custom digital products to drive our clients growth.

Frequently Asked Questions

Direct answers about custom software development .

What You Need to Know Before You Decide

When an important process does not fit the available tools and the improvement justifies developing and maintaining your own solution. If a SaaS product meets the need well, it may be the better choice. We compare current limitations, integrations and ongoing costs before deciding.

It depends on the complexity. Automation or digitization projects for specific processes can start at €25,000-€40,000. Complete platforms with multiple integrations and users typically range from €60,000 to €150,000. We'll provide you with a fixed price quote after analyzing your needs.

An automation system or specific module can be in production in 2-3 months. More complex platforms with CRM/ERP integration and multiple functionalities require 4-8 months. We work in sprints with constant deliveries: you'll see progress from week 2.

We first review the system version, available APIs or exports, permissions and the provider's terms. If there is no API, we assess alternatives before confirming feasibility. We define which data should be exchanged, how often and what happens if synchronisation fails. When an older system needs modernisation, we plan phases and coexistence to reduce operational disruption.

That's normal. We use agile methodology precisely for this reason: we review priorities and make adjustments every two weeks. Your custom software evolves based on what you learn during development.

We develop with Django, a framework with 20 years of evolution and used by companies that serve millions of users. Our code is well-documented, tests are automated, and our architecture is designed for easy maintenance. We offer support and upgrade agreements to protect your investment.

Yes, although it depends on the state of the code. We audit the system, evaluate its quality, and give you an honest diagnosis: whether it makes sense to keep building on it or if it's more efficient to rewrite parts of it. Sometimes inheriting bad code costs more than starting clean.