Nikola Hajdin is President of the Serbian Academy of Sciences and Arts

Serbian Academy of Sciences and Arts

The Serbian Academy of Sciences and Arts is the most prominent academic institution in Serbia today...

, as a member of the Department of Technical Sciences. As a construction engineer, he built many bridges in former Yugoslavia; most prominently the New Railway Bridge in Belgrade

Belgrade

Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. According to official results of Census 2011, the city has a population of 1,639,121. It is one of the 15 largest cities in Europe...

 and the Liberty Bridge in Novi Sad

Novi Sad

Novi Sad is the capital of the northern Serbian province of Vojvodina, and the administrative centre of the South Bačka District. The city is located in the southern part of Pannonian Plain on the Danube river....

. Nikola Hajdin also designed bridge which was built in 2007 in Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

 - the Solidarity Bridge

Solidarity Bridge

The Solidarity Bridge is a cable-stayed bridge over the Vistula River in Płock, Poland, being in a sequence of two national roads: national road no. 60 and national road no. 62.-History:...

 in Płock over the Vistula

Vistula

The Vistula is the longest and the most important river in Poland, at 1,047 km in length. The watershed area of the Vistula is , of which lies within Poland ....

 River

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

. He was also a University professor. He is also a member of the European Academy of Sciences and Arts

European Academy of Sciences and Arts

The European Academy of Sciences and Arts was created in 1990 in Salzburg, Austria by heart surgeon Felix Unger of Salzburg; the cardinal archbishop of Vienna, Franz König; and the political scientist and philosopher Nikolaus Lobkowicz....

.