Modern Android developer, young adult male, casual wear, jeans, white shirt, sneakers, standing in front of a large whiteboard, explaining complex architecture designs, diagram filled with technical terms and symbols, futuristic laboratory background, rows of computer servers, neon lights reflecting off polished floor, sleek modern chairs, minimalistic decor, sharp facial features, confident posture, hand gesturing to emphasize points, warm softbox lighting, shallow depth of field, high-tech ambiance, cinematic composition.