Addleshaw Goddard Wisniewski Dzianachowski Schulz i Wspólnicy sp.k.

Testimonials

Collated independently by Legal 500 research team.

• Szymon Sieniewicz - he is a very knowledgeable and highly experienced lawyer. His responses are quick, and throughout the process, I felt fully informed about where the case was. He managed to explain every detail to me in a way that a person with a non-legal background can easily understand.
• The team is very responsive and aims to find feasible solutions, being open to discussions. The billing process is simple, and I feel we have full control over the spending process.
• ‘Outstanding work and cooperation with Szymon Sieniewicz. He has got in-depth knowledge of the field and keeps up with the latest changes in law and applicable business solutions. He is very down-to-earth and provides excellent and sound legal advice and a tailored transaction and negotiations solutions. He is also very responsive and easy to work with.’
• ‘The team is highly regarded for its expertise in technology, AI, e-commerce laws, and data privacy. The professionals are particularly recognised for their ability to navigate complex regulatory challenges in these areas, offering practical, business-focused advice that is both innovative and easy to implement.’
• ‘Having worked with Szymon Sieniewicz in the past, I can confidently attest to his exceptional legal knowledge and expertise. He is widely recognised for his expertise in data protection, cyber and AI matters. He is known for providing clear, thoughtful guidance on challenging legal issues and for being highly approachable and responsive, making him a standout TMT lawyer in Poland.’
• 'Addleshaw Goddard's TMT group stands out for making complex regulations practical and easy to understand.'
• ‘Szymon Sieniewicz is a standout professional and a trusted advisor in all matters related to IT, data, digital, and e-commerce. His ability to translate complex legal issues into actionable solutions, combined with his strategic foresight, makes him an invaluable partner to our business. Szymon’s deep knowledge of the regulatory landscape, particularly in the context of AI and data protection, consistently adds significant value to our operations. Szymon’s collaborative and approachable style, coupled with his meticulous attention to detail, sets him apart from competitors. He has earned our trust through his consistent delivery of high-quality advice and his ability to align legal recommendations with our business objectives. His recent promotion to counsel is well-deserved, and we look forward to continuing our successful collaboration with him and his growing team.’
• ‘Very efficient, task and business-oriented team. Smooth cooperation with excellent advice and supervision by Szymon Sieniewicz. Capable of handling elaborate cross-border transactions, as well as providing ongoing local business advice. The team is very up to date with the latest technology and solutions.’

Key clients

• NewCerberus Capital Management
• NewCRH
• NewDevelia S.A.
• NewInfraVia Capital Partners
• NewPolish Scientific Publishers PWN

Work highlights