Mr Aleksander Haleniuk > Dentons > Warsaw, Poland > Lawyer Profile
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Mr Aleksander Haleniuk

Work Department
Banking and Finance
Position
Aleksander Haleniuk is a counsel in Dentons’ Warsaw office and a member of the Banking and Finance practice team. He specializes in banking, finance and civil law.
He has extensive experience advising on various financing transactions, particularly in infrastructure and energy finance deals, including project finance and public-private partnership (PPP) structures, as well as corporate and real estate finance. He advises financial institutions, including banks and multilateral development institutions, as well as borrowers and sponsors, at all stages of Polish and cross-border financing projects. Aleksander is actively involved in the preparation and negotiation of financing documents and legal opinions.
In 2020-2022, Aleksander was a staff member of the European Investment Bank’s legal department responsible for financing projects in the Baltic Sea region.
Career
Counsel at Dentons since 2025.
Languages
Polish, English, Ukrainian
Memberships
Admitted to the Polish bar since 2017.
Education
Warsaw School of Economics, MA, Finance and Accounting.
University of Warsaw, Master of Laws.
University of Warsaw, BA, Faculty of Political Science and International Studies.
Lawyer Rankings
Poland > Banking and finance
(Leading associates)The banking and finance team at Dentons boasts extensive knowledge in the real estate and renewable energy industries, with particular expertise across project, acquisition, corporate and export financing, as well as regulatory and restructuring mandates. Corporate financing expert Bartosz Nojek and Mark Segall now jointly spearhead the practice since former practice head Piotr Nerwiński departed the firm in November 2024, with a team of six lawyers, including Paweł Długoborski and Justyna Jamroży. Another key member of the team is Tomasz Zwoliński, who is dual-qualified in Poland and England. In other team news, Aleksander Haleniuk joined the firm from DLA Piper Giziński Kycia sp.k. at the beginning of 2025 alongside three associates, bolstering its expertise in infrastructure and energy finance deals, and Marta Piotrkowicz arrived from DWF Poland Jamka Sp.k.
Lawyer Rankings
Top Tier Firm Rankings
- Competition/antitrust
- Construction
- Data privacy and data protection
- Employment
- Public procurement
- Real estate
- Restructuring and insolvency
- Tax
- TMT