About
Robert Trzynka is an attorney with Halbach Szwarc Law Firm in Sioux Falls, South Dakota. His practice includes Civil Litigation involving commercial and construction matters and Personal Injury involving transportation accidents, workplace injury, and medical malpractice. Robert also has litigation experience in estate and domestic matters. His practice is well suited to disputes involving complex facts, technical evidence, insurance issues, and significant financial or personal consequences, where careful analysis and detailed case preparation are especially important.
Robert earned a Bachelor’s Degree from Harvard University and a Master’s of Science in Information Systems from Dakota State University. He later received his Juris Doctor from the University of South Dakota School of Law. Before becoming a lawyer, he spent a decade developing software in the technology industry. That technical and legal education gives him a distinctive foundation for litigation involving complex records, electronic information, technical systems, and detailed factual questions that require structured analysis alongside traditional legal advocacy.
Robert began his legal career working with Mike Abourezk on plaintiff-focused insurance bad faith cases and played a role in a $34.25 million verdict against a long-term care insurance carrier. His later work has included numerous fraud cases involving a spine surgeon and hospital system, an invasion of privacy case recognized among significant South Dakota Supreme Court decisions, and a substantial contempt judgment in a family law dispute. He litigates in state and federal settings and handles a varied civil docket.
Robert is licensed in South Dakota and in the U.S. District Courts for the District of South Dakota and District of Colorado. His technology background strengthens his ability to organize and understand evidence in matters where data, systems, or technical facts are central to the dispute. Robert Trzynka combines litigation experience, software and information-systems knowledge, and a broad civil practice to help clients address personal injury, commercial, construction, estate, family, workplace, and medical malpractice matters.
Law Office Affiliations
- Attorney, Halbach | Szwarc Law Firm
- Member, State Bar of South Dakota
Licensed State
- South Dakota
Education
- University of South Dakota School of Law
Juris Doctor (JD) - Dakota State University
Master of Science (MS) in Information Systems - Harvard University
Bachelor’s Degree
Awards & Badges

- Car Accidents
- Medical Malpractice
- Slip & Fall Accidents
- Trucking Accidents
- Litigation
- Construction & Development





