Embedded

I have an upcoming system design interview for an embedded software role at Bloomberg. I've found some older reddit posts on similar topics. But since its Bloomberg (finance, no embedded products) and the job posting focuses more software on their data center hardware. So things likes telemetry, perfomance tuning. I'm unsure where to focus my prep on. My recruiter gave me some pretty vague answer. If anyone has experience/insights on what to focus on or resources. Any insight is greatly appreciated!