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TZI-Inzenjering LLC is a design company founded on 29 March 1990 by Zoran Trobok, MCE.
During the past two decades, TZI-Inzenjering LLC has actively participated in the design and supervision of
infrastructure projects in Bosnia and Herzegovina and always successfully complied with the requirements of
projects. Today, TZI-Inzenjering is recognized as one of the leading companies in its field in Bosnia and

The main activity of the company is the design of road and highway networks including structures (bridges,
viaducts, tunnels, overpasses, underpasess).
The TZI-Inzenjering LLC employs highly qualified and experienced engineers in a wide range of core disciplines
and has several external collaborators – experts with backgrounds in civil engineering. The company's
multidisciplinary teams have the ability to meet any challenge, for any space, by combining professional
knowledge, expertise and experience.

During its existence, TZI-Inzenjering LLC. has provided consulting services for government authorities and other
domestic and foreign clients. Among our clients are goverment departments, ministries and associated government
agencies, local and regional institutions, as well as multilateral organizations: the World Bank(WB), the European
Bank for Reconstruction and Development (EBRD), the European Investment Bank (EIB) and several bilateral
organizations: the Japan International Cooperation Agency (JICA) and the United States Agency for International
Development (USAID) .

TZI- Inženjering LLC is registred with the Federal Ministry for Physical Planning for performing designing tasks:
the design of road and railway networks as well as structures within roads and railways (complementary
structures); geotechnical projects and validation of investment - technical documentation.

Also, TZI- Inzenjering LLC is working in accordance with the requirements of the international standard for quality
management systems ISO 9001:2008. The certificate was issued by the SIQ (Slovenian Institute of Quality and
Metrology, www.siq.si) and IQNet (International Certification Network, www.iqnet-certification.com).