Finland’s decades-long experience in safe and responsible management of high-level radioactive waste was shared with Bulgarian stakeholders in a national cooperative workshop that was held on Thursday 29th October 2020. As part of the workshop, a Memorandum of Understanding has been signed by Vice President Tommi Nyman of VTT Technical Research Centre of Finland and Professor Dimitar Dimitrov, Rector of the Bulgarian National Nuclear Security Support Center, Department “National and Regional Security” (UNWE) to further develop competences and research opportunities in the field of safe radioactive waste management. The workshop objectives were to bring together a wide delegation of parties aimed at fostering deeper cooperation towards the common goal of implementing a permanent waste repository in Bulgaria. The Bulgarian Ministry of Energy Petkova Temenuzhka provided endorsement in a letter of support, expressing “Finland’s long-standing experience in implementing the deep geological storage program will contribute to building up expertise and to nuclear energy in our country. The workshop will enable experts to exchange experiences with respect to the best environmental protection practices.” The workshop also addressed the recommendations of a 2018 IAEA Artemis mission to Bulgaria. According to Associate Professor Svetoslav Spassov, Director of the Nuclear Security Support Centre in Bulgaria, “this event is very important to Bulgaria, to advance their repository roadmap and readiness with concrete actions, technical targets, policy needs and communication plans.”