Guillermo Diaz Diaz

Guillermo Díaz Díaz, a sole proprietorship based in Mexico City, provides on-site English-Spanish interpretation services to the Department of State and related federal agencies in Mexico, operating exclusively as a prime contractor on delivery orders under existing indefinite delivery contracts. The vendor competes without set-aside designation in the open market.

Guillermo Díaz Díaz specializes in diplomatic and operational interpretation across bilateral discussions, regional conferences, military training programs, and law enforcement cooperation initiatives throughout Mexico and the Latin America/Caribbean region. Representative work includes a $25,292.30 delivery order from the U.S. Embassy Mexico in January 2025 for interpreter support during the Transnational Criminal Investigative Unit training program (February 3–14, 2025), a $23,524.92 delivery order in July 2024 for interpretation services in Manzanillo supporting bilateral diplomatic engagement, and a $16,306.90 delivery order issued July 8, 2026, for on-site interpretation services in Mexico with completion by December 31, 2026. All named recent awards are firm fixed-price delivery orders under the Department of State's indefinite delivery contracts.

Customer concentration is heavily weighted to the Department of State. The top five agencies account for 97% of awards by count, led by the Department of State Bureau of Western Hemisphere Affairs (119 awards, $1.2 million combined potential value), followed by the Department of State Bureau of Diplomatic Security (54 awards, $288 thousand), the Department of State Bureau of International Narcotics Law Enforcement (38 awards, $491 thousand), the Department of Justice Drug Enforcement Administration (5 awards, $18 thousand), and the U.S. Embassy Mexico (5 awards, $1.3 million). The two rankings diverge notably: while the Bureau of Western Hemisphere Affairs dominates by award count, the U.S. Embassy Mexico carries the highest combined potential value per the source's top-customers-by-potential-value ranking. Guillermo Díaz Díaz holds seats on three named parent vehicles: the Interpretation Services Mexico City IDC (124 task orders, $642 thousand combined potential value), Indefinite Delivery Contract SMX53013D0016 (76 task orders, $494 thousand), and Indefinite Delivery Contract 19MX5321D0007 (12 task orders, $194 thousand).

Activity has declined significantly over the measured period—five awards in 2023, three in 2024, one in 2025, and one in 2026—representing a downward trajectory from the vendor's historical baseline of 1 to 5 annual orders. Only one award carries an ultimate completion date within the next twenty-four months, valued at $16 thousand, indicating minimal near-term recompete exposure. All 227 awards in the source data are prime delivery orders under PSC Support—Administrative: Translation and Interpreting, with no subcontract footprint. Combined potential value across all awards is $3.3 million, with $1.4 million obligated to date.