Dominika joined Crossref in 2018 as a Principal R&D Developer, where she focused on metadata matching research aimed at enriching the scholarly record through the discovery of new relationships. In 2024, she became Crossref’s Director of Data Science and established the Data Science team, with a mission to explore innovative ways of using data to support the scholarly community, enrich the Research Nexus with more metadata and relationships, and develop collaborations with like-minded community initiatives. Since 2025, Dominika has served as Director of Technology, leading a unified technology team that integrates infrastructure, software development, and data science functions. Dominika holds a PhD in Computer Science from the Polish Academy of Sciences. Prior to joining Crossref, she she was a researcher and a data scientist at the University of Warsaw, Poland, and a postdoctoral researcher at Trinity College Dublin, Ireland.
We’ve recently reached an important milestone for the research nexus: the works in our metadata corpus are now connected with over 2 billion citation links! This is a great opportunity to share a dedicated dataset and discuss why these are important for science.
On 17 March 2026, we experienced an outage that affected DOI resolution for Crossref DOIs and the deposit of metadata records by Crossref members. In this summary, we outline what happened, the impact on our community, and the steps we are taking to strengthen our systems and processes as a result.
Dominika Tkaczyk, Thursday, Mar 19, 2026
Metadata is communication; it can tell a story about research and paint a picture for others to respond to and learn from, across the world and throughout the forthcoming generations. Metadata can feel technical with words like ‘infrastructure’ and ‘schema’, and sometimes, like tech in general, it comes with hyperbole. But metadata really is part art (storytelling and pictures) and part science (structured models and standards) with both aspects being equally important, and requiring people as well as systems. That necessary combination of human and machine involvement also makes metadata challenging.
Ginny Hendricks, Thursday, Dec 18, 2025
In Annual ReportCollaborationCommunityFinanceSustainabilityMembershipMetadataResearch NexusStaffStrategy
As we finish celebrating our 25th anniversary, we can look back on a truly transformational year, defined by the successful delivery of several long-planned, foundational projects—as well as updates to our teams, services, and fees—that position Crossref for success over the next quarter century as essential open scholarly infrastructure. In our update at the end of 2024, we highlighted that we had restructured our leadership team and paused some projects. The changes made in 2024 positioned us for a year of getting things done in 2025. We launched cross-functional programs, modernised our systems, strengthened connections with our growing global community, and streamlined a bunch of technical and business operations while continuing to grow our staff, members, content, relationships, and community connections.
RocÃo Gaudioso Pedraza, Wednesday, Oct 1, 2025
The Crossref Grant Linking System (GLS) has been facilitating the registration, sharing and re-use of open funding metadata for six years now, and we have reached some important milestones recently! What started as an interest in identifying funders through the Open Funder Registry evolved to a more nuanced and comprehensive way to share and re-use open funding data systematically. That’s how, in collaboration with the funding community, the Crossref Grant Linking System was developed. Open funding metadata is fundamental for the transparency and integrity of the research endeavour, so we are happy to see them included in the Research Nexus.
