Negotiate Figma compensation analytically

Given a recruiter-indicated range of base $210–225k and $600k RSUs vesting over 4 years for a Figma Data Scientist role, walk through how you would analyze and negotiate the offer: (1) estimate first-year total compensation under three stock scenarios (−30%, 0%, +30%) assuming standard 25%/year vest; (2) propose a data-backed counteroffer (which components to move: base, RSU grant, sign-on, level, refresher cadence), with rationale tied to your impact, market data, and competing timelines; (3) list clarifications you would request (cliff vs quarterly vesting, performance multipliers, refresher policy, promotion pace, location/remote banding, start-date flexibility); and (4) state explicit trade-offs you’d accept (e.g., +$X base for −$Y RSUs, or a sign-on to bridge vest). Be concrete and numerically precise in your assumptions and calculations.