Vesting Schedule after working with the company for X months months:

    12: 5%  
    24: 15%  
    30: 20%  
    36: 20%  
    42: 20%    
    48: 20%

They give cash signing bonuses for the first 2 years while RSU vesting catches up. SDE1 gets a lump sum with prorated clawback, SDE2 and up gets monthly installments and no clawback. The year 1 signing bonus is slightly larger than the year 2 signing bonus. The larger RSU vest in year 2 more than makes up for this. With this structure target total comp rises 5-20% per year.

Base salary is capped at $160k in most locations, $180k in ultra-high COL areas like San Francisco and New York City.

Source: I work at Amazon