Ada Lovelace Day in 2026

The international Ada Lovelace Day, which celebrates women in scientific and technological fields, will be observed on October 13, 2026. This date is the second Tuesday of October, as is traditional for the event.

Ukrainian researcher Kateryna Iouchtchenko

LinuxFr has participated in Ada Lovelace Day since 2023 by highlighting women in science. This year, the focus is on Kateryna Iouchtchenko, a Ukrainian researcher whose work had a significant impact on computing in the USSR and beyond.

Name variations and historical context

Ukrainian names can be transcribed differently in the Latin alphabet depending on the language. The spelling Kateryna Iouchtchenko is used here. It is also the name of Viktor Iouchtchenko’s wife, the former Ukrainian president, but they are from different generations and had different careers.

Life under Soviet rule

Iouchtchenko lived through the Soviet era, a time when the USSR was a federal state with centrally planned economies and a single ruling Communist Party. The country was led by Joseph Stalin until his death in 1953, and it remained under strict control until Mikhail Gorbachev’s reforms in the 1980s led to its dissolution in 1991.

Early life and family persecution

Iouchtchenko’s father was arrested in 1937 and accused of promoting Ukrainian nationalism through educational excursions. He was sentenced to either ten or twenty years in prison, and his wife, who tried to prove his innocence, was also arrested and did not return. Both were later rehabilitated in 1954 after Stalin’s death.

Educational challenges and achievements

As the daughter of individuals labeled as “enemies of the people,” Iouchtchenko faced significant barriers. She was expelled from the University of Kiev and later accepted by the University of Moscow with reservations. Eventually, she enrolled at the University of Samarkand in Uzbekistan, where she earned a master’s degree in 1942.

Contributions to Soviet computing

After returning to Ukraine, Iouchtchenko completed her doctorate in 1950 under Boris Gnedenko, becoming the first woman in the USSR to earn a doctorate in physics and mathematics for programming. She worked on early Soviet computers like the MESM, contributing to research in nuclear fusion and space launch technologies.

Leadership in informatics

In 1957, Iouchtchenko became the director of the Institute of Informatics in the Ukrainian Academy of Sciences. She established the first scientific school of theoretical programming in the USSR and supervised over 45 theses. Her work included writing twenty manuals and five books, some translated into multiple languages.

Pioneering programming language

In 1955, Iouchtchenko developed the address programming language (APL), a high-level language that predated Fortran, Algol, and Cobol. Unlike these later languages, APL was created outside official Soviet planning and became a foundational influence on modern programming concepts.

Legacy of APL

APL’s concepts influenced areas such as object-oriented programming, functional programming, and artificial intelligence. The language was used on Soviet computers for two decades, and its impact can be seen in modern technologies like barcodes, as noted in Ukrainian and international sources.