Arch.Milev received his Masters degree in Architecture in 2002 at UACG (University of Architecture, Civil engineering and Geodesy) in Sofia, Bulgaria.

In 2005, Assen Milev together with Angel Zahariev founded the architectural bureau A&A Architects.

As a manager and leader of the design team, arch. Assen Milev has worked in the design of many key projects, which has significant influence to the contemporary Bulgarian architecture and has been rewarded with multiple professional awards.

Prior to establishing A&A Architects, arch.Assen Milev was in charge of the design and development of Business Park Sofia and a number of other office and residential projects.

Arch. Assen Milev has a membership and full license from the Bulgarian Chamber of Architects.