Flexibility and Quality

Our core staff makes for the foundation of all our project teams. Additionally, our key partners work closely with us on specialist matters. Orizo Consult also regularly collaborates with a wide range of award-winning consulting firms to provide Quantum or Technical Engineering Expertise. We are able to build the right team by involving the most relevant consultants and experts based on the needs of your assignment. Should your first concern be the timeline, pricing or prestige, our wide network in Spain and France means we are always able to meet your expectations.

Core Staff

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Amaël Olivier

Founding Partner & Construction Delay Expert

Amaël testifies in English, Spanish and French. He has over 12 years of experience in forensic construction assessments. His worldwide track record includes over 25 projects from the energy, infrastructure, industrial, and residential sectors. Author of the Delay Analysis 101 and Cutting Edge Delay Analyisis newsletters, he is a recurring speaker at the French Institute of Contract Management, teaches Expert Witness roles and techniques at the University of Villanova, and is a Faculty Director at the Chartered Institute of Professional Certifications.

He holds a Master in Civil and Material Engineering from french Ecole des Mines, a Master of Science in Soil Mechanics from Imperial College London (UK), and an International Master in Construction Project Management (BIM, LEAN, IPD) from Universidad de Barcelona (Spain). He recently enrolled in an MIT xPro course on Systemic Thinking for Project Management.

Konstantaras Dimitrios

Dimitrios Konstantaras

Senior Partner & Construction Delay Expert

Dimitrios Konstantaras is a testifying Delay Expert and Chartered Civil Engineer with over 20 years of experience in design, construction, project management, concession contracts, and delay and disruption analyses. Dimitrios has been involved in expert witness work for over 20 high-value engineering and construction cases. He has acted as lead assistant to prominent experts like David Barry in around 15 arbitration proceedings and has been appointed as a delay expert in arbitration, litigation, adjudication, and independent expert opinions eight times. Recognized by Who’s Who Legal Construction Expert Witnesses guide, he brings market-leading expertise to his role.

He holds a Master’s degree in Construction Law from King’s College London (UK), a Master’s in Construction Economics from University College London (UK), and an engineering degree from Aristotle University of Thessaloniki (Greece). Fluent in Greek and English, his expertise spans transportation, oil and gas, power, and industrial projects across multiple continents.

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Guillaume Soubias

Operations Director

Guillaume cumulates nearly 7 years of experience in the construction industry, including project monitoring. He also spent various years of his career in the aeronautical industry, collaborating with Airbus. Guillaume holds a Master in Material Engineering from french Ecole des Mines, and a Certification in Civil Engineering from Indian Institute of Technology in Delhi (India).

Nora Ibañez

Nora Ibañez


With close to a decade of experience in construction projects spanning the Americas, Pacific, Middle East, Africa, and Europe, Nora specializes in Delay Expert Witness services for construction disputes. She’s an invaluable asset in litigation, arbitration, and adjudication matters. Holding a Master’s in Civil Engineering from Alfonso X El Sabio (Madrid), she has comprehensive knowledge from pre-contract stages to post-contract dispute resolution. Her global expertise enhances our team’s diversity and reach. Nora is fluent in English, French, and Spanish.

Gustavo Recio

Senior Consultant

Gustavo is a seasoned Architect with nearly a decade of experience working for international stakeholders. Graduated at the University of Seville (Spain), he also holds a postgraduate course in Advanced Project Management by the UPC School in Barcelona (Spain) and is PRINCE2 Foundation certified. Gustavo worked for the Aura Project, a sustainable dwelling prototype ranked third at Solar Decathlon 2015. He spent his first years as project supervisor in major events, such as Mobile World Congress. Before joining Orizo Consult, Gustavo was also involved in the construction of automated warehouses in the Middle East and worked for NPSG Europe, starting up Amazon fulfilment centres accross Europe. He is fluent in Spanish and English, can communicate in Italian and Catalan, and is currently improving his French.

Nad Issa

Nad Issa


Nad holds a Master in Civil Engineering from Al-Baath University (Syria), as well as a Master of Science from the Escuela de Ingeniería de Caminos, Canales y Puertos at the UPC in Barcelona (Spain), one of the best civil engineering degrees in Europe. He also holds a certificate in business intelligence and trains in the field of Big Data for Engineers. Before joining Orizo Consult in 2022, Nad gained experience with Nestlé where he monitored the upgrading of the third largest production centre of Nescafé in the world. He also worked as a project assistant for Windsor Patania Architects, focusing on the procurement for university and high-profile residential investments. Nad is fluent in English, Spanish, and Arabic.

Key Partners

Paul-Alain Pichereau

Senior Manager - Trusted since 2015

Paul-Alain is a civil engineer and Expert in construction project management and delay analysis. He cumulates over 8 years of experience in more than 15 countries, assisting clients on a wide range of projects, including: power plants, infrastructure, high-rise buildings, oil and gas, and industrial facilities. He holds a Master in Civil Engineering from French Ecole des Mines. He speaks French, English, and is capable in Spanish.