Jerzy Dojnikowski was born in 1933, in Pijawne Polskie, near Augustów (Podlaskie Voivodeship). In 1952, he graduated from the Secondary Technical School of Mechanical Engineering in Suwałki and, in 1961, from High School of Engineering in Białystok. In 1977 he obtained a diploma in mechanical engineering specialization. In 1956 he began to work in the Factory of Tooling and Chucks as a designer. In 1961 he was promoted to chief designer. He retired in 1992. Member of the organization: Association of Polish Engineers and Mechanical Technicians, Polish Federation of Engineering Associations. Personal and family life : wife Stefania, daughter Joanna, grandchildren Hanna and Szymon.