Space is not simply a “harsher industrial environment,” but an engineering domain that requires system-level thinking, where requirements consolidation in the earliest project phases determines the entire lifecycle – especially in New Space projects applying ECSS tailoring. We will explain how a verification and validation strategy is built from a RAIT (Radiation, Assembly, Integration, Test) perspective, how true design drivers are identified (radiation, thermal constraints, reliability, lifetime, performance, data rate, mass), and how requirement management operates within a fully traceable engineering framework integrated with NCR handling. The presentation also addresses risk management and model philosophy (EM, EQM, PFM logic), manufacturing planning and procurement optimization – particularly for long lead-time space-grade components – as well as environmental and flight acceptance testing. At system level, we distinguish between different project and mission objectives (technology development, qualification, IOD, program mission), and through a concrete project example demonstrate how a high-speed, high-reliability electronic development evolves into a qualified flight unit. The objective is not only to highlight technological differences, but to demonstrate that space electronics development is fundamentally about structured thinking, engineering discipline, and system-level culture.