Hamen has demonstrated its competence by executing several of assignments to many of the international and local non-governmental organizations and private companies in Ethiopia. Some of our prominent clients from among the international organizations include: UNDP, World Bank, Child Fund-Ethiopia, Care International-Ethiopia. 

Hamen also has been working with many of the private and government companies such as Federal Industry Park Development Corporation, Ministry of industry, Ministry of Science and Technology, Bahir Dar Tannery, Luna export slaughter house, Netsante enjera, Tebita Ambulance and emergency pre-hospital service, GEM engineering, Eltex Textile and Garment Factory, Wossi Garment and international Fashion institute, Amhara Pipe factory, Woinu Cutain, Hawassa TVET college, Modjo Tannery, Dire tannery, Tena Migib Amrachoch, Endegena Ejigu Denim Jeans Wear scoping, R.Z.X Industrial PLC, Bedding Articles Production Project, Garment Manufacturing Project, Pet Preform And Cap Production Factory, Mulualem soap and detergent manufacturing factory, MEM Food and Beverage Industry, P.L.C., Hamlin Trading Plc NPS/NPK Fertilizer Manufacturing Plan Cheezer Trading Plc, Eshetu Belete Slaughter House and Meat Processing Plant, Ayalsew Teferi Milk Processing Project, Aregahegn Gutema Steel Reinforcing Bar Manufacturing Factory, JK Cookware Manufacturing Plc, Desalegn Fanta Container Glass Bottle & Tumblers Manufacturing Project, Kelemwork Bekele Ready to Use Supplementary Food (RUSF) Processing Project, Tiret Corporate/Tana Communication, Tiret Corporate/Tekrarwa Plastic, Tiret Corporate/Woldiya Fruit and Vegtable manufacturing, Tiret Corporate/ Yeju Honey and Honey products manufacturing, Tiret Corporate/Kombolcha crown cork manufacturing PLC, Tiret Corporate/Maed food manufacturing Tiret Corporate/Azila Electronics, Tiret Corporate/TI Metal, ASBEM industrial, ERER Farmers cooperative Union, Tanarmu Chemical Industrial PLC,