Juan Romero Domínguez

About me

SAP professional with more than 10 years of experience in critical projects on R/3 and S/4HANA environments, specialized in SAP IS-U processes and focused on designing, building, and executing complex technical solutions that deliver tangible, sustainable, and maintainable results.

I combine full-stack experience in frontend and backend with solid knowledge of infrastructure, networks, performance, and system operations. This allows me to approach projects end to end: from functional and technical design to development, integration, deployment, optimization, and ongoing support.

I also design and maintain my own production systems based on high-performance hardware, such as DELL PowerEdge R630 and MikroTik CCR2116-12G-4S+, controlling every technology layer: code, servers, network, security, performance, monitoring, and availability. In web projects I look for measurable results, including advanced optimization and maximum PageSpeed Insights scores when the technical context allows it.

As an independent developer, I also create and publish Android applications for international marketplaces such as Google Play, Huawei AppGallery, Samsung Galaxy Store, and other mobile ecosystems. I work with a worldwide vision: I prepare apps for users from different countries, manufacturers, and devices, taking care of compatibility, store listings, icons, screenshots, promotional images, texts, translations, documentation, privacy policies, legal terms, consent, analytics, stability, and publication review.

I develop my own projects in Android, web, PHP, .NET, SAP, automations, and integrations. The main images, texts, designs, code, and materials in my projects are created and maintained by me, except for third-party libraries, SDKs, APIs, services, or components used where appropriate.

I have experience in technical leadership, management, and team coordination, bringing strategic vision, technical rigor, and a constant commitment to quality, scalability, and innovation. I focus on challenges that require advanced technical skills and a global vision capable of connecting business, software, infrastructure, and real operations.