A portrait of a joyful 40-year-american startup founder man smiling with his head tilted back and his eyes look directly to camera and mouth open in a natural, expressive smile. He has medium-white skin, short curly hair. His facial expression radiates warmth, authenticity, and confidence. He wears a casual outfit: a vibrant neon green jacket (#9DEF1A) over a white t-shirt. The look is simple and stylish, with no visible logos or patterns — just clean, contemporary lines that reflect a relaxed yet expressive vibe. The background is a solid, evenly dark green in #1B220F, smooth and textureless. Lighting is soft and diffused, creating gentle contrast to highlight the subject while maintaining a polished, editorial feel. The overall composition is bold, modern, and upbeat.