Built by people who still build.

Daniel works across the layers that make a software product coherent: product strategy, interaction design, mobile architecture, backend systems, and the language used to explain it.

His experience includes building scalable mobile platforms and founding TopCars. At null4.ai, he stays directly involved from the first constraint through production implementation.

Brahayan combines electronic engineering with software development, bringing model behavior, backend architecture, and production infrastructure into the same technical conversation.

His work spans Python and Django, Java and Spring, Docker, AWS, machine learning, computer vision, and signal processing. At null4.ai, he focuses on the systems that make applied AI dependable beyond the prototype.

Jorge builds Android software with Kotlin and Java, using MVVM and MVC patterns to keep application code modular, maintainable, and ready to evolve.

His product work applies mobile engineering to everyday service workflows. At null4.ai, he focuses on Android delivery, interface implementation, and the architecture behind reliable mobile experiences.

Juan works on the operating layer behind product ideas: mapping how work moves, where handoffs fail, and what a system needs to remain useful in daily service delivery.

His public profile is associated with King Laundry Co. At null4.ai, he focuses on operational discovery, service design, and implementation planning.