The development and launch of small satellites like CroCube represent significant advancements in space technology and research. Miniaturization and technological progress enable cost reduction and increased functionality of space missions. This work encompasses all key phases from design to launch, including component analysis, system evaluations, and vibration testing. CroCube is optimized for manual assembly using the DFA method, resulting in a reduction of parts from 81 to 61 and an increase in assembly efficiency from 23.47% to 44.13%. This has lowered procurement and production costs and reduced assembly time from 472.89 to 414.65 seconds. Vibration tests and simulations have proven the structural stability of the construction. Although simulations are of limited accuracy and reliability, they are extremely useful during the design process. Nevertheless, actual tests are necessary to ensure that the satellite will withstand the extreme conditions during launch and operation in orbit, allowing it to successfully complete its intended mission. This comprehensive approach to the development of CroCube can serve as a model for future small satellite projects, contributing to further development and innovation in the space industry. The work provides insights and practical applications useful for researchers and engineers in future space exploration missions.