First Deputy Governor of the NBU — Macroeconomist-Technocrat
For a long time, he was Director of the Monetary Policy and Economic Analysis Department of the NBU. On August 15, 2025, the NBU Council appointed him First Deputy Governor upon the nomination of Andriy Pyshnyi. He is responsible for the "Financial Stability" vertical and temporarily for "Monetary Stability"; he is considered one of the key architects of the NBU's monetary policy during the full-scale invasion.
Modest declaration, absence of scandals, and appointment overshadowed by Oliynyk
Declarations for 2014–2024 were submitted systematically; the NABU (National Agency for the Prevention of Corruption) did not record any public violations. No criminal proceedings, suspicions, or journalistic investigations concerning him personally have been documented. The August 2025 appointment occurred amid an investigation involving deputy colleague Oliynyk — however, Nikolaychuk is in no way implicated in this case. He is considered the most "unpublic" and technocratic among the NBU deputies; his public appearances are limited to professional macroeconomic commentary.