The document summarizes the Lunatic Goats @PoliMi team's approach for the ACM RecSys Challenge 2017 on cold-start job recommendations. Their solution uses an ensemble of content-based filtering, profile matching, and collaborative filtering algorithms. It discusses the data analysis, local validation process, individual algorithm implementations and tuning, ensemble structure, parameter tuning methodology, online changes, system architecture, and final scores in the local and leaderboard evaluations.