  In this work we study one of the most appealing string theory-motivated
models, we present a tachyonic inflationary model in the recently proposed
symmetric teleparallel framework, and examine constraints on tachyon inflation
with the exponential potential along with the reheating for a chosen $f(Q)$
gravity model. Considering a reheating phase parametrized by a number of
e-folds $N_{re},$ a temperature $T_{re}$, and an equation of state $\omega
_{re}$, we relate the reheating parameters as functions of the exponential
tachyon potential, $f(Q)$ model, and\ the spectral index $n_{s}$ parameters. We
argue that our model predicts inflationary e-folds bounded as $50\leq N\leq
64$. While for the reheating phase, wide ranges of reheating e-folds numbers
and temperatures can be obtained as we increase $\omega_{re} $ towards the
value $1/4$ according to recent Planck Data.
