Reach English C2 in writing and speaking and start posting technical work in English — single-language visibility in a non-English country caps your addressable employer pool by roughly 70% and is currently the cheapest 5–8 OVR points available.

Convert geographic mobility from 'not_mobile' to at least 'continental' (even just willingness to relocate within EU) — this directly unlocks the remote-first frontier-data-science employer set whose comp bands sit 40–80% above current, and immediately repricies transfer cost.

Deepen the t-shaped profile into one named specialty (LLM fine-tuning, time-series forecasting at scale, causal inference) and ship a public artifact in it — moves skill_combination_rarity from 'standard' toward 'rare_combination', which is the single attribute that separates the €90k band from the €150k+ band in this market.