2003-2006 Environmental Advisor to the Mayor of Tehran
Advising the Mayor on various urban environmental issues . Projects included promotion of CNG systems to combat the severe air pollution problem in the City. Other projects underway include planning for integrated water management, implementation of energy-saving approaches in City dwellings, design of GIS-based environmental data bank, and feasibility evaluation of common duct for utilities.

97/2001 Env Advisor to the Minister (Ministry Mines and Metals ,Tehran)
Advising the Minister on various environmental issues arising from mineral and metallurgical activities. Duties included background report preparation, pollution control technology evaluation, regulatory issues' advice, conducting ISO 14000 training sessions for top managers, coordination of overall environmental plans of the Ministry.

96/2000 General Director of Environment (Ministry of Industries Tehran, Iran)
Managing various basic and detail design and construction stages of water transmission, water distribution, wastewater collection, and wastewater treatment plants for over 200 industrial estates throughout the country. Duties included project management and control of the above functions and providing advice to the Deputy Minister for industrial estates.

95/2003 Research Deputy Director

2003/2011 Director, Institute of Water and Energy (Sharif University of Technology Tehran, Iran)
Management of R&D activities on low-cost wastewater treatment systems for private and governmental clients. The main strategy has been to develop systems capable of producing environmentally acceptable effluents, require minimal energy expenditure, and are relatively easy to operate and maintain with local resources. Source apportionment of urban air pollutants has enabled the municipal authorities to optimize resource allocation and advise management strategies.

94/95 Industrial Relations Manager ( Esfahan Univ. of Medical Sciences Esfahan, Iran)
Management of joint R&D projects between the University and various local and national industries. Devising plans and strategies for increasing the share of the University in governmental and private industries? research and educational grants

91/94 Dean College of Health (Esfahan Univ Medical Sciences Esfahan, Iran)
Management of educational, research, and financial affairs of a six-department (Community health, Occupational Hygiene, Environmental health engineering, Biostatistics, Nutritional sciences, Path biology), 50 faculty, and over 1000 student college

90/91 Env Engineer ( Lockwood, Andrews and Newnam Houston, Texas, USA)
Assisted in writing work plans, conducting needs evaluation of air quality modeling, remedial investigation, and feasibility studies for Superfund sites (petroleum-related: Sikes, French-limited) in the Houston vicinity. Reviewed environmental impact assessment of proposed Lake Eastex reservoir. Developed sampling plans, analyzed sampling results, and made recommendations for odor/corrosion prevention and control for the City of Houston wastewater collection and treatment systems

89/90 Project Control Engineer (BECK Program Management Dallas, Texas, USA)
Created and Engineering Productivity database software for the construction management of Dallas/Fort Worth airport improvement program, DART railway plan, and north central highway expansion. Specific duties included integration and evaluation of information from various State and local agencies as well as consulting firms involved in relocation of utility lines.

85/86 Process Analyst ( Dallas Water Utilities Dallas, Texas, USA)
Toxicological assessment of organic priority pollutants discharged by local industries to the Dallas Central Wastewater Treatment Plant. Initiated experimental design, collected and analyzed the data, and made recommendations to the R&D committee

81/84 Process Engineer (FLAKT Corporation Knoxville, Tenn., USA)
Conducted chemical kinetics studies to improve the efficiency of power plant Flue Gas Desulphurization and air pollution abatement processes. Duties included operation and management of a 1000 ACFM pilot plant, data collection and analysis.