Maciej Kajrukszto

Quantum and Delay Expert

"The Team of CAS consists of Experts and Specialists, who perceive the quality of services rendered and individual treatment of Clients as their priority."


  • M.Sc., Engineer in Civil Engineering and Geodesy, Military Technical Academy in Warsaw, Poland

Professional associations

  • Cost expert of SKB (Association of Quantity Surveyors)
  • Member of the Polish and Masovian District Chamber of Civil Engineers – license to manage and supervise construction works in construction and civil-engineering industry, unlimited in scope
  • Member of SKB (Association of Quantity Surveyors)
  • Member of SIDIR (Association of Consulting Engineers and Experts) (FIDIC)
  • Court expert in technology, organization and management of building undertakings (including costs)
  • Mediator


Maciej is a CAS Managing Partner. He manages the team of Experts and Specialists, dedicated to contract consulting for Investors, Contractors and other parties to the construction process. Together with his Team, Maciej renders such services as preparation of claims, preparation of claim defense and independent assessments.

Maciej provides advice to Clients on complex investments and specializes in analysis of contracts concluded, risk analysis, claim preparation and defense against claims, as well as consulting in association with dispute settlement using ADR methods and litigations before courts and arbitral bodies. In his everyday work, he uses his knowledge gathered as a court expert and mediator.

He also has extensive professional experience gathered in a contractor company, as well as in consulting work at large-scale projects in such sectors as power engineering (modernization and construction of new power units and process lines), infrastructure (subway, highway, expressway, national roads, railroads), facilities (stadiums, railway stations) and commercial buildings (shopping centers, office buildings). Maciej is a lecturer in technical sciences on construction investment processes.

Other areas of competence

Preparation and defence against claims:

  • Preparing claims and defending against claims (regarding: extending the time of project implementation, increase of costs related to extending the time of project implementation, additional costs of speeding up project implementation, legitimacy and cost calculation of additional works, project implementation interference cost);
  • Preparing a strategy for negotiation of claims;
  • Performing the critical path analysis for the projects;
  • Performing delay analysis using the following techniques: prospective (forward looking) and / or retrospective (backward looking);
  • Earned value analysis (Earned Value Method – EVM).

Dispute resolution:

  • Serving as an expert witness (cost analysis, term analysis, works quality and technical aspects analysis) in proceedings before common and arbitration courts;
  • Conducting mediation and participating as the Client’s representative or adviser in the mediation procedure;
  • Arbitration;
  • Consulting in the dispute resolution procedure.

Costs control

Planning and scheduling

Contract administration

Training courses


Would you like to take advantage of our services?

Contact us

We are members

Subscribe to our newsletter
get the latest information from us, reports and analysis


The objective of CAS is to prevent disputes during various stages of project implementation and to resolve disputes through the specification of claims and defense against those claims.
As Experts, we provide support during negotiations, mediations and cases under litigation before courts and arbitral bodies to minimize their negative effects and maximize profits.

Get to know more about our company

Team of Experts

The CAS team consists of experienced Experts and Specialists, who have cooperated for over ten years. They have successfully completed projects in such sectors as: power engineering, buildings, infrastructure, sea (maritime sector), mining, crude oil and natural gas, manufacturing and industry.

Get to know our team
Mapa Warszawy z siedzibą CAS Sp. z o.o.


CAS Sp. z o.o.
ul. Pańska 98/12,
00-837 Warsaw, Poland

KRS: 0000659441
Regon: 366393384
NIP: 527-279-47-55

Follow us

+48 608 470 354

Contact us
Mapa Warszawy z siedzibą CAS Sp. z o.o.