Mark Anthony Sabandal · Agentic Engineer in the Philippines

Agentic Engineer for the layer that makes AI-assisted software dependable.

Mark Anthony Sabandal is a full-stack web developer and Agentic Engineer based in the Philippines. For more than a decade he has built and maintained software in real working environments, where a system has to do more than look finished—it needs to be dependable, understandable, and safe to operate. His focus now is the part of AI-assisted development that typing speed cannot solve: writing specifications precise enough that an agent cannot misinterpret them, designing tests and review gates that catch bad output before it ships, and supervising code-generating agents from intent to verified result.

That shows up as local-first tools, AI-assisted workflow infrastructure, media pipelines, and client-side automation. He is especially drawn to the awkward middle of a project—the handoffs, failure cases, and the small repetitive steps that make a tool frustrating in everyday use. There, he untangles the process, writes the missing structure, and leaves behind something that can be checked, picked up again, and trusted by the person using it. In professional settings, he also goes by Mark Sabandal.