TechCity publishes an article on how the TechCongress program works:
TechCongress brings diverse tech talent, ideas, and training to Congress and to build a practical and pragmatic understanding of Washington within the tech community.
About the Fellowship: The fellowship is a twelve-month residency on Capitol Hill, running from January to December, with an optional 13th month the following January. Fellows work directly for a Member of Congress or Congressional Committee for the duration of their residency and may spend their time on technology-related issues like emerging technologies, AI, and automation, election security, data privacy, encryption, cybersecurity or defense technology policy.