  We have studied the evolution of different timing and spectral properties of
the X-ray pulsar 2S 1417$-$624 during the recent outburst in January 2021 based
on the Neutron Star Interior Composition Explorer (NICER) and Swift
observations. The spin period during the outburst was $P \sim17.3622$ s based
on the NICER data and the period decreases slowly with time. The evolution of
the spin period and pulsed flux is studied with Fermi/GBM during the outburst.
The pulse profile shows strong energy dependence and variability. The pulse
profile shows multiple peaks and dips which evolve significantly with energy.
The pulsed fraction shows a positive correlation with energy. The evolution of
the spectral state is also studied during the outburst. The NICER energy
spectrum is well described with a model of $-$ broken power-law and a blackbody
emission along with a photo-electric absorption component.
