The brief sounds simple: give field workers a digital checklist. But the context makes everything harder. No internet signal across most of the field. Workers operating under physical and cognitive load. High-stakes tasks where a missed step isn't a UX issue, it's a safety incident. And an industry with very low design maturity, where convincing stakeholders that user-centricity matters is part of the job. I approached this through rapid user testing in the field, stakeholder workshops, and close collaboration with engineers to understand exactly what was technically possible offline. The solution needed to be intuitive enough that new employees could use it without training, and reliable enough that workers trusted it over the paper systems they had used for years. The app centered on smart task-based checklists with built-in safety warnings, real-time notifications to improve communication between field teams and business partners, and offline functionality that allowed seamless work without connectivity, with automatic sync on reconnection.