{"record":{"aliases":["Денис Сєнік"],"appointmentIds":["ukraine-a23cd44ec5cf15"],"appointmentsDataset":"https://chanceries.org/diplomats.json","archivalSources":[],"canonicalUrl":"https://chanceries.org/diplopedia/people/denys-sienik-c704d0e946/","countrySlug":"ukraine","entityId":"https://chanceries.org/diplopedia/people/denys-sienik-c704d0e946/#person","eventIds":[],"expandedParagraphs":["Denys Sienik joined Ukraine's foreign ministry in 2007 on the United States and Canada desk. He worked in the political section of the embassy in Canada from 2009 to 2012, then handled relations with Britain and Germany in Kyiv. He became chief of staff to the first deputy foreign minister in 2015 and served in the political section of the London embassy from 2016 to 2020. He holds a master's degree in foreign policy from Kyiv International University.","After another period as chief of staff to the first deputy minister, Sienik moved to Washington in January 2023 as chief of staff to the ambassador. He became deputy chief of mission that August and assumed charge of the embassy as chargé d'affaires in August 2026."],"id":"ukraine:denys-sienik","identifiers":{},"legacyPersonIds":[],"legacyUrl":"https://chanceries.org/diplomat-c704d0e94658dab76cf3.html","name":"Denys Sienik","notes":[],"paragraphSources":[["sienik-bio"],["sienik-bio"]],"profileUrl":"diplomat-c704d0e94658dab76cf3.html","relatedEvents":[],"relatedPeople":[],"relationships":[],"researchStatus":"limited","reviewedOn":"2026-10-28","revision":"77cdda1f56b5709a","sources":[{"accessedOn":"2026-10-28","date":null,"id":"sienik-bio","locator":"Biography updated to identify August 2026 chargé role","publisher":"U.S.-Ukraine Business Council","title":"Denys Sienik","type":"official-biography","url":"https://usubc.org/bio/denys-sienik/"},{"accessedOn":"","date":"","id":"mission-9d2fe0e564c058672109","locator":"Accessed 25 October 2026.","publisher":"","title":"Embassy","type":"Mission record","url":"https://usa.mfa.gov.ua/en"},{"accessedOn":"","date":"","id":"mission-b8405ffed7e0b6c80b4a","locator":"Accessed 25 October 2026.","publisher":"","title":"Mfa","type":"Mission record","url":"https://mfa.gov.ua/en/embassies/usa"}],"topics":["North America","United Kingdom","embassy leadership"]},"schemaVersion":1}