Memory leak in a critical service. A new feature that requires exploring new technologies. Marketing team needs a new internal tool. A new requirement from a client rises the bar on what the application could do thus far. Unexplained performance degradation. Who will usually pick that up ? an experienced engineer? the 1st startup engineer? Who ever is available? What I suggest is that it is possible to design, from the ground up, the perfect Special Forces team to do just that in an optimal way. It just needs to be designed and planned, and not just happen randomly ...