We are sharing a specialised consulting opportunity for experienced Physics Experts in biophysics, statistical physics, stochastic processes, and quantitative biological modelling with strong expertise in two-state stochastic models, Euler–Lotka analysis, perturbative methods, renewal theory, and first-passage-time techniques. Work will involve stochastic population modelling, two-state processes, gamma-distributed waiting times, Euler–Lotka analysis, perturbative expansion, renewal theory, and first-passage-time analysis.