We develop custom software for companies in Spain and worldwide that need technology solutions specifically designed for their business processes, their sector and their objectives. Over 35 years developing software and hundreds of delivered projects make us the trusted technology partner for companies that want to digitize, automate and scale their operations with proprietary technology.
Custom Software Development for Companies in Spain
At MiT Software we develop custom software for mid-size and large companies that have reached the limits of what standard market solutions can offer them. When your business has unique processes, proprietary workflows or requirements that no commercial software covers satisfactorily, the solution is to build exactly what you need. Our team of over 50 engineers covers the entire development lifecycle: requirements analysis, solution architecture, UX/UI design, backend and frontend development, integration with existing systems, testing, deployment and ongoing maintenance. We work with the most in-demand technologies on the market — React, Node.js, Java, Python, .NET, AWS, Azure — and follow agile methodologies that guarantee frequent deliveries and continuous alignment with business needs.
We start with a structured requirements gathering process: interviews with key stakeholders, documentation of current processes, identification of pain points and opportunities, definition of functional and non-functional requirements and agreement on the success criteria of the project.
Based on the defined requirements, we design the technical architecture of the solution: system components, technologies for each layer, integration patterns with existing systems, non-functional requirements — performance, security, scalability — and the estimated effort and timeline for implementation.
Before writing a single line of code, we design the user experience: information architecture, user flows, low and high fidelity wireframes and interactive prototypes that validate the design with real users. A good UX design prevents expensive changes during development and guarantees a product that people actually want to use.
We work in short sprints of 2 weeks, delivering functional software at the end of each one. This allows you to see progress from the first weeks, give feedback that is incorporated immediately and adjust the scope based on what you learn as the product evolves.
Every feature we deliver goes through automated and manual testing processes: unit and integration tests, end-to-end testing, security testing, performance testing and user acceptance testing. We don't deploy to production until we're confident the software works correctly.
We manage the deployment to production, configure the monitoring and alerting environments and provide training for the teams that will use and maintain the software. During the weeks after launch, we provide intensive support to quickly resolve any issue that may arise in production.
Standard software forces you to adapt your processes to what the tool allows. Custom software does the opposite: it is designed from scratch to reflect exactly how your business operates, with the workflows, automations and integrations you need, without the limitations or unnecessary functionality of generic solutions.
Custom software is designed with the future in mind: scalable architecture that supports growth in users, data and functionality without requiring complete rewrites, modular design that allows adding new capabilities without impacting existing ones, and modern technology that will remain maintainable for years.


We develop web applications of any complexity: management portals, self-service platforms, internal tools, customer-facing applications, marketplaces or any other type of web solution your business needs. We use modern frameworks like React, Vue or Angular on the frontend and Node.js, Java, Python or .NET on the backend.


We design and develop REST and GraphQL APIs that expose the functionality of your systems to other applications, mobile clients or third-party partners. We also design microservices architectures for companies that need to scale different parts of their system independently and deploy more frequently.


We integrate custom software with any existing system in your organization: SAP, Salesforce, HubSpot, Dynamics, Oracle or any other ERP, CRM or third-party platform. We develop bidirectional integrations that keep data synchronized between systems without manual intervention.


We help companies migrate from outdated applications that are difficult to maintain and evolve to modern architectures. We analyze the existing system, define the modernization strategy — refactoring, re-platforming, re-architecture or gradual replacement — and execute the migration minimizing risk and business continuity.


We develop native and cross-platform mobile applications for iOS and Android that extend the capabilities of your systems to mobile users. Whether it's a customer application, an internal tool for field teams or a B2B solution, we build mobile apps with the same quality and attention to detail as our web solutions.


Delivering the software is just the beginning. We provide continuous maintenance and evolution services: bug fixes, performance improvements, new features, dependency updates, security patches and technical support for your team. We become the long-term technology partner you need.


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