Expert profile

Mariusz Wiechec

Director

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Highlights

Highly qualified civil engineer with international project experience.
Acts as both delay and quantum expert.
Risk and Contingency Manager for projects totalling over $1.7 billion.
Bilingual – Polish and English.
Combines technical acumen, engineering knowledge and dispute resolution know-how.

Services

Construction Delay & Disruption | Construction Quantum

Industries

Mariusz Wiechec is a rising star in the construction disputes space, combining technical acumen with deep expertise in quantum and delay analysis. With a background in civil and structural engineering, he brings a holistic approach to delay, disruption, and cost damage issues.
Lexology Index - Consulting - Construction - Quantum Delay and Technical - Future Leader

Expertise

Mariusz Wiechec is a civil engineer with almost 10 years of construction industry experience. He has been appointed as a delay expert on three occasions, as well as assisting the named expert in matters of delay and quantum.

Mariusz has prepared numerous expert reports and acted as an expert advisor across a variety of projects regarding program and cost related issues. He has supported testifying experts during deposition and arbitration hearings and has experience of both negotiations and adjudications.

Mariusz’s expertise lies in a holistic approach to problematic matters, combining forensic delay, disruption and cost damages analysis. His technical background and logical approach to analysis, combined with the ability to clearly present an argument, enables him to support clients across a complex range of disputes.

Professional recognition

Lexology Index

Construction – Future Leader

Mariusz Wiechec is a well-regarded expert with extensive experience providing quantum and delay analysis in high-value disputes arising from domestic and international infrastructure and construction projects.
Lexology Index - Construction - Future Leader

Background

Mariusz has a civil, structural and industrial engineering background, working on projects across the USA, Canada, UK and Poland. His experience ranges from contract management and project controls to claims management and dispute resolution. He has also worked as a consultant for an owner on a multi-billion-dollar metro development programme, providing cost and schedule risk analysis services.

Mariusz holds a project management professional (PMP) certification and has completed expert witness training and trial advocacy training, including with the American Bar Association. He holds a master’s degree in civil engineering and is fluent in both English and Polish.