ButterflyMX is revolutionizing property access control through smartphone-based solutions, serving over 15,000 properties worldwide. We're seeking a talented Mechanical Engineer to join our Hardware Engineering lab in Southern California. This role combines innovative design with practical engineering, focusing on creating durable, efficient access control systems. You'll work on cutting-edge hardware products, leading mechanical design from concept to production. Our distributed team values excellence, innovation, and collaboration, operating under core principles of customer delight, ownership, and tenacious problem-solving. The position offers comprehensive benefits and the opportunity to shape the future of property access technology. As part of our hardware development team, you'll drive mechanical innovation while ensuring products meet strict reliability and performance standards. The role demands creativity balanced with engineering precision, perfect for someone passionate about pushing boundaries in physical product design while maintaining practical functionality.