The present invention relates to bioreactor system and method thereof wherein support matrix (2) comprises at last one central shaft and plurality of peripheral shaft being radially surrounds central shaft. Arrays of discs (11) are mounted along the shaft by defining interspatial vicinities between two successive plates. Thus, discs mounted on peripheral shafts are rotated within the interspatial vicinity of discs of central shaft to ensures sufficient mixing and avoid stagnant fluidic zones which is created when discs are mounted closely apart from each other on shafts. Further, plurality of deflector vanes that are axially provided along the length of the central shaft to redirect substantially co-axial direction fluid flow into interior of culture vessel and more specifically towards the central axis. Thus, bioreactor system provides scalable and disposable bioreactor with efficient mixing and homogeneous conditions and thereby supports high density growth and maintenance of cells and other biological material.