The Goos–Hänchen-like (GH) shift of electron wavepackets at potential interfaces provides a powerful method for probing the properties of quantum materials. In this work, we theoretically investigate the spin- and valley-resolved GH shift in a monolayer of jacutingaite (Pt2HgSe3), a quantum spin Hall insulator, subjected to both a perpendicular electric field and off-resonant circularly polarized light. Using a low-energy effective Hamiltonian and a scattering formalism, we calculate the lateral