If you have experience in database core engine development either professionally, on open source, or at university send me your resume. When I joined the DB world 20 years ago, the industry was young and the improvements were coming ridiculously fast. In a single release we improved DB2 TPC-A performance by a factor of 10x. Things were changing quickly industry-wide. These days single-server DBs are respectably good. It’s a fairly well understood space. Each year more features are added and a few percent performance improvement may happen but the code bases are monumentally large, many of the development teams are over 1,000 engineers, and things are happening anything but quickly.
If you are an excellent engineer, have done systems or DB work in the past, and are interested in working on the next decade’s problems in database, drop me a note (email@example.com).