In this research endeavor, our primary objective is to develop new noise spectroscopy techniques that enables more accurate and efficient characterization of the frequency-dependent spin-environment coupling, and to develop advanced quantum control methodologies for better noise mitigation. Our experiments are focused on NV centers in diamond, a mature spin systems that have found wide applications in quantum sensing and quantum networking. Besides better coherence engineering, we will apply our techniques for new applications in quantum sensing with NV centers.