This document provides details of an engineering design project to develop a mobility aid for senior citizens. It outlines the problem statement of assisting the elderly with mobility and climbing stairs. Major objectives are ease of mobility and climbing stairs, while minor objectives are low cost and compatibility. Literature on existing products is reviewed, including manually operated wheelchairs, stairlifts, and electric wheelchairs for stairs. Motivation is provided citing India's growing elderly population. Personas of target users are described. Pain points and areas of pain for seniors are identified through questionnaires, interviews, observations and a Delphi method. An overview of the design process is given covering discovery, definition, ideation, prototyping, testing and iteration.