Custom Software Development
We design and develop software solutions from scratch, adapted 100% to your company's unique business rules, guaranteeing the intellectual property of your code, maximum security and total technological independence.
We design and build scalable web and mobile platforms using cutting-edge architectures. We create solid technology solutions that respond agilely to digital market demands and strengthen your business.

At Macaque Consulting, we develop high-performance digital platforms using cutting-edge technologies and clean code methodologies. We design modular architectures based on microservices and APIs that facilitate the constant evolution of your corporate tools without generating technical debt. We guarantee smooth and secure integration of your new applications with your entire existing IT ecosystem, ensuring speed, high availability and exceptional performance in every deployment.
We turn your most complex operational and business challenges into fast, secure and efficient digital applications. We design solutions based on agile methodologies that guarantee a long useful life for your software.
We design and develop software solutions from scratch, adapted 100% to your company's unique business rules, guaranteeing the intellectual property of your code, maximum security and total technological independence.
We structure your software into independent, decoupled modules that run in the cloud. We facilitate continuous maintenance, accelerate deployments and guarantee elastic and global scalability for your systems.
We create native mobile applications (Swift, Kotlin) and hybrid multiplatform applications (KMM, React Native, Flutter) with high performance, optimised to deliver fluid user experiences on any mobile device.
We develop dynamic web applications and complex portals for corporate environments and software-as-a-service (SaaS) business models, prioritising load speed (WPO), security and user experience.
We update and refactor your obsolete or monolithic software systems toward modern, cloud-based platforms. We eliminate technical debt, improve performance and ensure business continuity without interrupting your operations.
We design and develop secure connection layers through API architectures (REST, GraphQL) to robustly connect your different internal applications, third-party platforms and databases.








We help companies define a clear technology roadmap, prioritising solutions that create real value from the start.
We analyse processes, data, tools and operational needs to turn technology into a lever for sustainable growth.
Our approach combines strategic vision and technical execution to create digital ecosystems ready to evolve.






We design architectures capable of connecting systems, automating tasks and centralising critical information to improve decision-making.
We integrate platforms, applications and cloud services with a practical, secure and results-driven perspective.
The goal is to reduce operational friction, accelerate teams and build a flexible technology foundation for new products and services.
Why choose us?
We design software ready to evolve by combining maintainable architecture, user experience and technical execution built to support real growth.
We build applications around your processes, users and goals, not from a generic template.
We create technical foundations that make new features, third-party integration and growth easier without rebuilding the product.
We choose stack, patterns and components with speed, maintainability and return in mind for your organisation.
We work so software is usable, robust and sustainable over time, not just functional in the short term.
ISO/IEC 27001:2023
EUROCERT S.A. Certificate no. 00.15.0812

Certification corresponding to Macaque Consulting
Scope according to certificate.
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We answer the most common questions about custom software, microservices, mobile applications, SaaS platforms, legacy system modernisation and API development for companies in Tarragona, Catalonia and across Spain.
We design and build scalable web and mobile platforms with cutting-edge architectures. We work across six areas: custom software development, microservices and cloud-native architecture, mobile application development (iOS and Android), web applications and SaaS platforms, legacy system modernisation, and API development and systems integration. We serve companies in Tarragona and across Spain.
An off-the-shelf solution works when your processes are generic and the tool covers your needs without major adaptations. Custom software makes sense when your processes are a differentiating factor, when market solutions require too many workarounds or when you need to integrate several systems natively. We help you decide with an objective analysis of costs, timelines and return, and in many cases we combine both approaches.
A microservices architecture splits an application into small, independent services that are developed, deployed and scaled separately. The cloud-native approach takes advantage of containers, Kubernetes and managed cloud services for maximum availability and scalability. If one part fails or needs to grow, it does not affect the rest of the system. It is the foundation of modern platforms that evolve quickly and support large volumes of users.
We develop both. Native apps for iOS and Android offer maximum performance and full access to device features. Cross-platform apps, built with technologies such as Flutter or React Native, let you launch on both systems from a single codebase, reducing costs and timelines. We choose the option based on your users, features and budget, and we optimise publication on the App Store and Google Play with ASO so your app gets downloaded.
Modernising a legacy system does not mean rewriting everything at once. We analyse the application, its dependencies and its value to the business, and apply a progressive migration: we extract functionality into modern services, expose it through APIs and replace the old system piece by piece. This reduces risk, keeps operations running without interruptions and eliminates the technical debt that holds back your company's evolution.
APIs are the communication channel between applications. We design and develop secure, documented and scalable APIs that connect your ERP, CRM, e-commerce, mobile apps and third-party services, so data flows in real time without manual processes. They also let you open your services to partners and customers, creating new business opportunities. All developed under the security standards of our ISO/IEC 27001:2023 certification.
Tell us what you need and we will help you develop, improve or scale your technology solution with custom software, IT outsourcing and artificial intelligence.
We analyse your case and propose solutions tailored to your business
From the initial idea through product evolution
Technology prepared to grow with you
Response within 24 hours