Derval Costello

Derval’s career reflects a lifelong commitment to purposeful work around the world. Whether advising historic universities, supporting faith communities, or strengthening health and education systems, Derval applies a steady, informed approach to every engagement.

As a Partner at CCS, what sets Derval apart is her ability to meet organizations at pivotal moments: launching inaugural efforts, reinvigorating established development programs, or guiding teams through campaigns that reshape the possible.

Her leadership blends strategic focus with an instinct for understanding what motivates communities and the people who serve them. As a colleague, Derval offers perspective, composure, and authentic engagement to every partnership. Clients know her as a trusted advisor who listens closely, thinks deeply, and champions the meaningful change they hope to create.

Derval’s connection to her work is personal. Based in the West of Ireland with her husband, Seán, and their sons, Fiachra and Iarlaith, she remains actively engaged in her local community. Her passion for education, faith, and health is reflected not only in her professional engagements but in the values she carries into her daily life.