Electron paramagnetic resonance (EPR) is an exquisite tool to analyze and characterize unpaired electrons in a substance. Its wide application in chemistry and pharmaceutical research, biology and physics boosts an active field of research in EPR development. The implementation of superconducting quantum circuits to measure the EPR response has shown to enhance the spin detection sensitivity down to a few spins (~20) on a nanoscale volume ~100fL – a gain of five orders of magnitude compared to the state-of-the-art. The unprecedented sensitivity originates from small mode-volume and narrow line-width detection resonators, millikelvin temperatures and amplification of the spin microwave signals using quantum-limit amplifiers. These circuits are however intrinsically characterized by a long ring-down time, making them ill-suited for probing spin species with low coherence times. We propose a dynamical bandwidth tuning of the EPR resonator to lift the constraints on the ring-down time while keeping the benefits offered by superconducting circuits in detection. We are working with Niobium-Titanium-Nitride (NbTiN) alloy and exploiting the kinetic inductance of such magnetic-resilient superconductor to implement the tunability scheme using a varying DC current. This would allow us to perform pulsed-EPR sequences on a large scope of spin species in micron-sized samples adding a tool for new research paths as detection of unpaired electron in single cells or measurement of both inorganic and organic micro-crystal.