Over the past two and a half decades, he has been involved a broad range of initiatives funded by bilateral and multilateral agencies, hosting substantive technical contributions in areas such as educational modernization and reform, local economic development, gender mainstreaming and strengthening democratic governance. His work has spanned contrasting settings throughout Latin America, the Caribbean and beyond, also including some early work in support of the advancement of democracy and human rights. Benefiting from this wide professional lens, he has successfully crafted a unique focus on the design and implementation of monitoring and evaluation systems.

Since early in his career, Sergio has endeavored to adjoin the assessment of impact with the building of new capacities, reaching out to stakeholders and partners that reflect diverse social, economic and cultural backdrops. Reaching across distinct topics, his technical interventions have drawn useful lessons and examined emerging practices from development initiatives that, among others, hosted educational technologies in Guatemala, Peru and the Balkans, assisted the productivity models adopted by women in the informal economies of Pakistan and El Salvador and increased public sector capacity in the protection of labor rights in Tunisia and the Dominican Republic.

In the field, a blended approach of hands-on learning and knowledge sharing enables him to maximize the use of mix methods, addressing specific sensitivities that influence program implementation, amidst the challenges presented by shifting landscapes. Likewise, in responding to the hindrances presented by closed societies and non-permissive environments, he continually introduces early creative iteration and context-driven innovation, as new pathways to enhance the adaptive use of development-oriented metrics and protocols.

Overall, his work harbors the use of digital tools to assist observation and measurement activities in the field, supporting cost-effective collection of qualitative and quantitative data associated with contextual, attitudinal or behavioral changes targeted by development initiatives. Moreover, the use of interactive and collaborative digital tools aligns with his professional interest in surfacing knowledge and new industry practices associated with evaluation methods such as Outcome Harvesting, Complexity Awareness and Developmental Evaluation.