Mash is hiring a Product Engineer to own user-facing features end to end across the Mash iOS app, backend, and AI systems. You will couple close user engagement with product and design to ship impactful changes, then stay with features after launch to measure impact and iterate. You will operate in a small team with real users, shaping Mash as it evolves, and you will be expected to move quickly, reduce friction, and keep users in mind at every step.