What are some other really useful skills? AI/ML frameworks, data skills, cloud basics, embedded programming, PCB design, sensor integration, front-end, back-end

What are some other really useful skills? AI/ML frameworks, data skills, cloud basics, embedded programming, PCB design, sensor integration, front-end, back-end/API, version control? That would just be a start. After that an MI6 hopeful would have to pick up some physics, materials science and basics of precision instrumentation so they can get a job at a Chinese foundry...for reasons. Oh, and they would have to be good at Mandarin, too. Nobody said spying was easy :)