About Me

I am the head of our Commercial, Litigation and Arbitration team based in Warsaw. I am particularly experienced in complex technical disputes including construction disputes.

I have been advising leading corporate clients from the construction, automotive, energy and beverage & food sectors since 1996. I advise clients on creating dispute resolution strategies and policies, represent them and lead contract negotiations, especially infrastructural and construction contracts.

My dispute resolution experience covers hundreds of cases, in which I have represented clients before the Supreme Court and the common court, before the administrative courts (including the Supreme Administrative Court), arbitration proceedings according to the rules of the ICC, SCC, LCIA, Polish Chamber of Commerce Arbitration Court (KIG), as well as ad hoc arbitration according to equity rules, in international arbitration proceedings according to the rules of UNCITRAL, and cross-border insolvency.

I have repeatedly been a speaker in debates, conferences and panel discussions devoted to the problems of international arbitration of investment and economic development.

Prior to joining Bird & Bird, I was head of a litigation team for a world leader in construction and development.
  • Representing a leading construction firm in a series of disputes regarding motorway construction contract payments.
  • Representing Poland in investment arbitrations initiated by some investors.
  • Representing a Polish leading petrol manufacturer and distributor in negotiations regarding modernization of petrol processing installation.
  • Representing a National gas pipeline system operator in series of construction disputes.


  • Maria Skłodowska-Curie University in Lublin, Law
  • Technical University in Radom, BA, Finance (BA)


  • Polish Bar Association
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Placed in a group of 8 leading Polish specialists in Construction.

Guide to the World's Leading Lawyers - Construction and Real Estate 2014

'Bartłomiej Niewczas provides us with remarkable experience in the field of commercial litigation and arbitration. His extensive knowledge allows him to develop the most effective strategies, carry out accurate assessments of chances and risks, as well as propose proper recommendations on relevant issues, such as appointment of arbitrators or settlement negotiations.'

Legal 500 EMEA 2021

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