Population aging is a worldwide trend. Designing systems aimed at this population segment is difficult because requirements identification remains a challenge. We describe value-infused design as a possible solution to this problem. The paper shows how value-infused design may be operationalized by translating value priorities into design imperatives, and then, into design principles that guide the design of systems. We demonstrate this with the design of a service-matching platform aimed at assisting the elderly for locating services such as housekeeping, meal preparation and others. We find that values such as tradition, security and self-direction remain important for the elderly. These, however, require a translation into design principles. The paper describes a prototype system that was built reflecting these principles, and concludes with implications for operationalizing value-infused design and describing next steps aimed at empirical evaluation.