Move from generalist senior IC into a deep specialty (ML systems, compilers, distributed systems, GPU kernels) and ship a named contribution there in the next 18 months — the scarcity-rarity jump from 'rare combination' to 'unique cross-domain' is the single biggest OVR lever at this stage, worth 5-8 points.

Convert the shipped portfolio from internal-only to public — one well-engineered open-source library, a frontier-conference talk, or a high-signal technical blog series; staff-track promotions at top-tier firms increasingly require external impact, and visibility 2-3× the transfer fee.

By 35, take a Staff or founding-engineer offer at a frontier AI / robotics lab — the realistic POT (mid-to-high 80s) is unlocked by the employer-quality + scope jump from large-incumbent senior IC to small-team frontier staff, not by another L5-to-L6 cycle.