From 1990 to 2000, Oleksiy studied at Lozivska Secondary School No. 3. He was a diligent, disciplined, and well-mannered boy who enjoyed learning, especially excelling in natural science and mathematics. At the same time, he attended a football sports section and participated in city and regional competitions. Oleksiy dreamed of enrolling in the Kharkiv Sports School-Internat, but his parents envisioned a different path for him.

In 2012, Oleksiy graduated from the Loziv branch of the Kharkiv Automobile Road College and went on to study at Kharkiv Automobile Road University. He worked as a builder in a private construction company in Kharkiv, involved in projects ranging from residential buildings and enterprises to the Donetsk stadium "Shakhtar." Oleksiy was close to his dream of becoming a football player.

In the loving family of Oleksiy and Natalka Mylostnykh, two daughters, Anastasia and Sofia, were growing up. When Sofia was just one month old in 2015, Oleksiy received a military summons. The next day, he went to the military enlistment office as the country was already fighting for its independence and integrity.

As a distinguished student of military training, Oleksiy immediately found himself in the thick of combat near Stanytsia Luhanska, serving with the 1st Separate Battalion of the 28th Mechanized Brigade of the Armed Forces of Ukraine. His call sign was "Courier."

In June 2016, while leading a fierce battle in the absence of the battalion commander, Oleksiy made a decisive choice that saved the lives of his comrades. On June 28, 2016, he was awarded a badge of honor and a certificate for conscientious performance of military duties, high professionalism during combat missions in the Luhansk region, patriotism, and exemplary conduct in service to Ukraine.

He was promoted to Junior Sergeant and appointed squad commander.

Throughout his service, Oleksiy’s family eagerly awaited calls from the front line to hear his voice and confirm his safety. He often joked that he was resting; when explosions were heard in the background during calls, he said volunteers were bringing bottles of champagne to celebrate his birthday.

After a year of service, Oleksiy was offered a position in the Security Service of Ukraine. Tragically, on the very day his candidacy was approved—November 18, 2016—Oleksiy passed away.

He had contracted severe illnesses in the trenches, which damaged 90 percent of his lungs. Despite medical efforts, he “burned out” in less than a day, and doctors were unable to save him.