What We Earn is an anonymous salary survey platform designed specifically for software engineers based in Europe. The tool collects compensation data through a short questionnaire consisting of nine questions that take approximately two minutes to complete. No user account is required, employer names are never asked, and all responses remain anonymous. The survey asks for country and city, work arrangement (remote, hybrid, or on-site), employment type (permanent, contract, or B2B), technology stack, professional level and years of experience, base salary (yearly, monthly, daily, or hourly), actual bonus paid in the previous year, equity (optional), and company size and industry. The platform explicitly avoids collecting names, employer names, free-text entries, or IP addresses. Duplicate submissions are filtered using a hash that expires the same day. Responses are aggregated and published only after a country reaches a threshold of 60 submissions, ensuring that the reported median is statistically meaningful. Until that threshold is met, no distribution or median is shown for that country. The published data includes medians and quartiles broken down by country, professional level, and years of experience, and can be viewed either raw or adjusted for cost of living. Users can filter the dataset down to specific combinations of attributes, and the system clearly indicates when a sample size falls below five responses to avoid misleading conclusions. The full anonymized dataset is made available as a CSV file under the Creative Commons CC BY 4.0 license, rebuilt nightly. The platform has no premium tiers, email walls, or drip-feed mechanisms; access to the data is only limited by the number of submissions received. After submitting the survey, users may optionally provide an email address to be notified when results are published. This email is stored in a separate database with no link back to the individual answers, so the platform cannot connect a user to their own salary data. The tool aims to support salary negotiations by providing engineers with a transparent, community-sourced reference for compensation across Europe.