I've worked for one startup and a handful of large publicly traded companies (Fortune 1K, Fortune 500, etc). My current employer is a ~5k-person software development shop that does a lot of government work, so it's largely like what you describe. It really does seem to be the sweet spot.

- Lax dress code (collared shirt, jeans on Friday only)

- Free soda in the home office

- 120 hours PTO + sick time

- Start any time between 6 and 9

- 8 hour day includes 1 hour lunch break, so really 35 hr/wk of work

- Overtime is explicitly banned, you actually need approval (since most time is billed to a client)

- WFH is available depending on your client, some have access restrictions that make it impossible but barring that you can WFH when needed/approved