Modern office, coding scene, solid principles poster on wall, programmer, young adult male, casual wear, glasses, messy brown hair, intense facial expression, fingers typing on keyboard, MacBook laptop, multiple screens, ergonomic chair, wooden desk, coffee cup, papers scattered, SRP, OCP, LSP, ISP, DIP, clean architecture, layered architecture, microkernel architecture, event-driven architecture, Pipes and Filters architecture, Broker architecture, Model-View-Controller architecture, ambient light, 3/4 composition, shallow depth of field, realistic rendering.