1996 – 2004 She studies Architecture in the National Technical University of Athens. During her studies she prepares tens of works, most of them at the Department of Compositions and Technological peak and at the Department of Bioclimatic Design.2002-2003 She works for a Greek architectural firm “M. Papadakis & A. Panos” in Athens. During that period the firm wins an Architectural Competition for a Sporting Complex in Thessaloniki, Greece.2004 She resented her lecture “Illuminating the city”, and rated 10/10. Professor of Architecture G. Kontoroupis asks her to work for the issue of notes and the book of "Artificial Lighting in Buildings" which is distributed in the third year students of the Architectural School. She presented her thesis “REUSE: The Concert Hall”, and rated 10/10. She receives her diploma and M. Sc in Architecture from NTUA, rated Very Well 7.24/10.2005-2009 She creates a small architectural office based in Patras, in western Greece. She develops the small firm into SIAINI Architects a well know architectural firm in Western Greece, undertaking big architectural projects in Patras, Athens, Cephalonia, Zakynthos etc.2009 – present Efthymia Siaini together with Dimitris Mourtzouchos, civil engineer, founded in Patras e-adeia.gr, following 30-years experience in the field of architecture structural design, and construction in Greece. The wide ranging portfolio gathers projects created for private individuals and commercial clients in a variety of sectors, from residences and housing complexes to hotels and commercial spaces. The team develops projects from the early design stage to completion and provides full technical information and support, maintaining a sensitive approach to both social issues and the clients’ unique needs and expectations. The combination of experience and successful careers with a young team of 22 architects, civil engineers and external consultants, enable the firm to manage simple to more complex briefs with innovative and efficient thinking. In 2012 the team creates eplans.gr the first online source of home and house plans in Greece. The platform does not just resell ready made plans. The team of eplans.gr is a well organized team of architects, civil engineers and mechanical engineers with a goal, to make quality home design affordable. In 2013 the team creates an innovative initiative. Myenergyinspector.gr, an e-shop where anyone can order and buy the energy efficiency certificate for apartment, house, office or shop. A network of energy inspectors is ready to provide their services, all around Greece.2012 Together with her team, Efthymia Siaini, presents the startup Sharemy3g at the "Get In The Ring" event of the Athens 2012 Global Entrepreneurship Week. The team was awarded. Sharemy3g is a social sharing web tool that connects travelers with local subscribers of mobile internet to enable travelers rent for a few days, mobile internet connections at a very low price.2014 – present Efthymia Siaini together with Alexia Pappa, founded in Patras Maraboo Fashion a sustainable and ethical Greek Fashion Brand, driven by passion, that produces high quality garments. Stylish feminine and timeless designs, created with special attention to detail, from design to final production, produced locally in Greece. The brand is specialized in handmade clothes using pure material such as organic cotton, linen, Tencel etc and has a huge impact in the local community by its corporate social responsibility.2014 - present Efthymia Siaini was elected president of the Association of Young Entrepreneurs of Western Greece and she has organized several events in Patras during the GEW, such as "Rising Ideas startup competition" in 2013, "Business Restart" in 2014, "Growth through Marine Economy" in 2015, "Blue Growth Patras Competition" in 2016 etc.2016 - present Efthymia Siaini was elected president of the Hellenic Federation of Associations of Young Entrepreneurs and she has taken part to several European and world meetings and congresses, referring to Entrepreneurship, startup community and SME's.