Jadwiga Lesisz graduated in Foreign Trade from the Faculty of International Relations of the Wrocław University of Economics. She has also completed a post-graduate course in Real Estate Management at the Wrocław University of Technology, and a Master of Business Administration (MBA) two-year programme run by the WSB School of Business in partnership with Franklin University USA, which she graduated in 2015. She has over 20 years of professional experience, including extensive practical experience in the SME sector. In 2022 she completed postgraduate studies at the University of Warsaw, "Management in the art market". As a business owner and manager, she has many years’ experience in designing and organising business processes.

In 2012–2016, at PKO Bank Polski S.A. she was in charge of property lease operations related to the bank’s branches, supervising and participating in negotiation processes. She was involved in business controlling activities related to the optimisation of the bank’s branch network.

In 2016–2017, she was Director of the Project Management Department and member of the Audit Committee at the Polish Ministry of Development. She was responsible for the preparation and implementation of a uniform methodology and culture of project management and for the coordination of key projects.
She served as Vice President of the Polish Agency for Enterprise Development (PARP), responsible for public tasks supporting the implementation of innovations in enterprises. Her work at the Agency included initiating cooperation for the building of the start-up ecosystem in Poland. She also supervised public procurement, and management of assets and IT resources.

She has experience in the public administration sector in the director general role. She is a Supervisory Board Member in PKO Bank Hipoteczny S.A.

In 2016 she passed the exam for candidates to supervisory boards of state-owned companies.