With the continuous advancement of the industry-education integration strategy, universities face numerous challenges in coordinating student management and employment stability, while big data technology can effectively address these issues. Based on a three-dimensional framework of student development, industrial demand, and collaborative ecology, this paper explores its specific application approaches and proposes practical solutions including building an integrated big data platform, creating dynamic student profiles, strengthening industry-education data collaboration, and implementing a full-cycle tracking mechanism. A guarantee mechanism is constructed from four aspects: data security, sharing systems, faculty strength construction, and efficiency evaluation, to promote the synchronized resonance and collaborative improvement of student management and employment stabilization. This research provides theoretical basis and practical guidance for colleges and universities to optimize the level of talent cultivation and promote high-quality employment of graduates.