• You will own end-to-end product design for key product areas, from early concepts to shipped experiences • You will design clear, user-centred workflows for end users, growth teams, partners, and developers • You will partner closely with product and engineering to shape solutions, make tradeoffs, and execute effectively • You will use user research and product data to inform decisions, validate assumptions, and iterate quickly • You will contribute to and evolve Cello’s design system and shared patterns • You will raise design quality through hands-on work, thoughtful critique, and attention to detail • You will ensure a coherent product experience across key customer touchpoints