the answer would depend on what you consider best:
- Higher monetary expected valued: PE/ Hedge Fund/ VC/ Other financial services careers
- Higher upside: startup founder
- Best work/life balance: estabilished tech company (mainly FAMGA - Facebook, Apple, Microsoft, Google and Amazon)
- Low risk compared to return: corporate world
You may also find several niches which could end very interesting outside these standard paths (e.g. government, free lancing, smaller consulting firms).