CEE/CIS - Poland
3

Construction

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JLSW Janaszczyk Lis & Wspólnicy

Client Satisfaction
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The team at JLSW Janaszczyk Lis & Wspólnicy is instructed by both suppliers and investors to provide advice and representation in complex construction matters. The firm’s work includes supervising the construction process under the FIDIC model, project financing and disputes concerning contractual penalties. Marcin Lis jointly leads the team with an active project financing portfolio, alongside Tomasz Janaszczyk, who regularly acts for domestic and international companies on large-scale projects.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Professionalism at the highest level.’

  • ‘Knowledge and commitment.’

  • ‘The greatest strength of the JLSW team lies in their ability to collaborate effectively, combining diverse expertise to deliver comprehensive solutions.’

  • ‘Tomasz Janaszczyk, the partner we work mostly with, is distinguished by his sharp analytical skills, allowing him to quickly identify key issues and craft effective strategies. His ability to communicate complex legal concepts clearly and persuasively sets him apart from the competition.'

  • ‘The practice emphasises collaboration, both internally and with clients. They foster a co-creation environment where client input is valued, resulting in solutions that truly reflect client needs. Regular check-ins and feedback loops ensure that the client remains at the centre of the process.’

  • ‘The team excels at navigating change, whether it’s adapting to new regulations, market conditions or client needs. This agility ensures that they remain ahead of the curve and can respond effectively to evolving challenges.’

  • ‘Absolutely unique combination of knowledge experience and business-oriented problem-solving. Instant communication and easy-to-understand advice and content.’

  • ‘We have been working with the JLSW law firm for more than 10 years and treat them more as advisors than lawyers. Tomasz Janaszczyk deserves special mention for his in-depth knowledge and many years of experience.'

Key clients

  • Schlosser Sp. z o.o.
  • Novum Plus Sp. z o.o.
  • ELD Polska Sp. z o.o.
  • Poznan University of Technology
  • Von der Heyden Group
  • Schlosser Heiztechnik Gruppe Polska Sp. z o.o. sp.k
  • Firma Promar Sp. z o.o. SPK
  • Energy Group B.V.
  • Multichem Sp. z o.o.
  • Karlik Energy
  • MG Green Energy Sp. z o.o.
  • Rodan Event Rogoziński sp. k.
  • Fram Bud Sp. z o.o.
  • PKP PLK S.A.

Work highlights

  • Advised PKP PLK S.A., on several projects related to the construction and modernisation of rail tracks and other infrastructure at the national level.
  • Acting for Malta-based European investment and development group Von der Heyden Group on the Andersia Silver project.
  • Advising the University of Technology in Poznan in relation to drafting a public procurement design and build contract for the construction of a low-energy office building.

Lawyers

Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

The lawyer(s) leading their teams.

Marcin Lis, Tomasz Janaszczyk