Andrzej Siwek
Managing Partner
Legal Counsel
AREAS OF EXPERTISE
- Investment law
- Negotiations and mediation

We know the law, understand it, and have the expertise to apply it—to support you or take the burden off your shoulders.
As Managing Partner of SGP, I lead the firm to ensure that you work with the best lawyers and feel fully supported—because you are what matters most.
We build our team so that from the very first minutes of cooperation, you know you’ve made the right choice—whether you’re a business owner, a private individual, or a senior executive. We train and select legal talent with one goal: that you can confidently recommend us, knowing the value we deliver.
We carefully choose our lawyers, staff, and specialists from among exceptional individuals so you can feel confident you’re being supported by a trusted advisor in your decision-making. Where possible, we’ll step in and act on your behalf. We also work with trusted external experts, forming dedicated teams to handle complex transactions, disputes, or investments.
Whether you run a large corporation, operate a sole proprietorship, or work in a public institution—we have a team of lawyers ready to offer you real, practical support. And if we’re not the best for a specific task, we’ll help you find those who are.
We work for you like a great internist—looking at the full picture of your business, collaborating with specialists, pointing out what can be improved, and who can do it best.
My goal is your peace of mind and satisfaction that the problem has been solved. The greatest reward is your recommendation, confirming that you’re satisfied with the work we’ve done together.
For over 12 years, I taught future lawyers at the Faculty of Law and Administration of the University of Warsaw, while at the same time running a legal practice as a Legal Counsel at SGP. Over the past 25 years, I’ve participated in hundreds of diverse projects, so that today I can support you in choosing the right business model, securing its legal structure, mapping risks, and shaping your contracts accordingly. I truly enjoy celebrating shared successes. I love the law—and I thrive in it.
My goal is your satisfaction with our work.