Walter Perez

I’m a bilingual statistical data analyst with 19+ years of experience in macroeconomic statistics, data analysis, and international statistical classifications (ISIC, CPC, HS, SITC, BEC). I work across Spanish and English documentation, and I focus on accuracy, consistency, and clear technical communication.

Since 2015, I’ve served as an Independent Consultant supporting international and institutional clients. I’ve helped draft and update country nomenclatures aligned with ISIC, CPC, and SAC classifiers, and I supported SAT with GIZ Germany to implement and update ISIC Rev. 4 in the Unified Taxpayer Registry.

From 2006 to 2015, I built and analyzed core macroeconomic outputs as a National Accounts Analyst at the Bank of Guatemala. I compiled the Quarterly National Accounts framework using automated Excel workbooks, led quarterly reconciliation using benchmarking, and contributed to base-year changes (2001 and 2013), including directories, nomenclatures, and output tables.

I combine advanced Excel and Office Suite skills with SPSS, benchmarking, and time-series methods to deliver reliable reports, economic briefings, and methodological documentation. I enjoy cross-institutional coordination and remote collaboration, translating and transcribing technical statistical materials while maintaining terminology and standards end-to-end.