The Hydro Paragominas BauxiteBauxite Mine, in Pará, Brazil, started in 2007 and currently processes 11.4 million tons of bauxiteBauxite annually. Paragominas mine effectively manages bauxiteBauxite tailings using advanced Tailings Dry Backfill (TDB), which allowed Hydro to release 854 ha previously allocated for new tailings ponds. For that area, there is no available topsoil to initiate post-mining rehabilitationMining rehabilitation. A TechnosolTechnosols is being developed in reclaimed areas using organic waste amendments at rates of 0, 20, and 40 t ha⁻1. Soil fertility was monitored by physicochemical and biological indicators across 0–40 cm during two seasons. In 2024, few chemical attributes responded to amendments, but microbial biomassMicrobial biomass increased under more labile residues. By 2025, marked improvements were observed: sawdust (S20) and decayed wood at 20 t ha−1 (M20) increased soil organic matter (SOM) by 179% and 135%, respectively, and promoted higher base saturation, exchangeable K⁺, and effective cation exchange capacity (effective CEC). Cafeteria residues also stimulated microbial biomassMicrobial biomass, while recalcitrant inputs had weaker effects. Physical propertiesProperties showed no significant changes, but plant survival tended to be higher under sawdust and decayed wood. These results highlight that residue qualityQuality drives the timing and magnitude of soil recovery, with sawdust and decayed wood emerging as effective amendments for TechnosolTechnosols design in bauxiteBauxite mine rehabilitationMine rehabilitation.