Our Team

Independent researchers with experience in policy research, due diligence, and quantitative analysis. Our reviewers operate independently of editorial conclusions.

Dr. Helena Voss

Founder & Managing Director

Former principal investigator at the Urban Institute and research director at a policy advisory firm. Helena built Whitfield around one rule: every conclusion must be traceable to evidence.

David Okonkwo

Director of Research

David previously led commercial due diligence at a global strategy consultancy. He oversees category selection, criteria design, and reviewer coordination at Whitfield.

Sarah Brennan

Senior Research Fellow

Sarah specializes in quantitative evidence synthesis and public-source verification. Her background is in economics and data journalism.

Independent Reviewers

External reviewers verify methodology and evidence quality. They do not control editorial conclusions and disclose any institutional or commercial relationships.

Dr. Amara Ndiaye, PhD

Technology benchmarking & AI systems

Former postdoctoral researcher at Carnegie Mellon; publishes on software capability evaluation and reproducibility in machine learning benchmarks.

Dr. James Whitmore, PhD

Research methodology & evidence frameworks

Methodologist and former senior analyst at a leading economic research institute; reviews criteria design and proof-framework validity.