(10/2023 - present) Researcher in the Systems AI Lab (SAIL) at Telefónica, Barcelona, Spain.
(09/2025 - 12/2025) Adjunct Professor at Pompeu Fabra University (UPF), Barcelona, Spain.
(09/2024 - 12/2024) Adjunct Professor at Pompeu Fabra University (UPF), Barcelona, Spain.
(10/2022 - 10/2023) Postdoctoral Researcher at TU Delft, Netherlands.
(09/2018 - 05/2022) PhD Student & Teacher Assistant at EURECOM, Sophia Antipolis, France.
(12/2016 – 08/2018) Data Analyst & Quality Control Engineer at ARGANS, Sophia Antipolis, France.
(05/2016 – 11/2016) Research Trainee at INRIA & LucieLabs, Sophia Antipolis, France.
(10/2015 – 04/2016) Intern at INRIA, Sophia Antipolis, France.
10/02/2025: I was awarded the Marie Skłodowska-Curie Actions (MSCA) postdoctoral/individual fellowship for my project OPALS: OPtimization ALgorithms for Split learning. The fellowship will be hosted at Telefónica and will start very soon! More details to come!
Conferences:
R. Ganian, F. Mc Inerney, and D. Tsigkari. Parameterized Complexity of Caching in Networks. In Proc. of the 39th AAAI Conference on Artificial Intelligence (AAAI), 2025.
J. Tirana, D. Tsigkari, G. Iosifidis, and D. Chatzopoulos. Workflow Optimization for Parallel Split Learning. In IEEE International Conference on Computer Communications (IEEE INFOCOM), 2024.
D. Tsigkari, and T. Spyropoulos. Caching and Recommendation Decisions at Transcoding-Enabled Base Stations. In IEEE Global Communications Conference (IEEE GLOBECOM), 2022.
D. Tsigkari, G. Iosifidis, and T. Spyropoulos. Split the cash from cache-friendly recommendations. In IEEE Global Communications Conference (IEEE GLOBECOM), 2021.
D. Tsigkari and T. Spyropoulos. User-centric optimization of caching and recommendations in edge cache networks. In IEEE International Symposium on “A World of Wireless, Mobile and Multimedia Networks” (IEEE WoWMoM), 2020.
G. Neglia, D. Carra, M. Feng, V. Janardhan, P. Michiardi, and D. Tsigkari. Access-time aware cache algorithms. In IEEE International Teletraffic Congress (IEEE ITC), 2016. 🏆Best paper award
P. Philippides, C. Bratsas, E. Chondrokostas, D. Tsigkari, and A. Veglis. Creating and Using Sports Linked Data: Analytics and Applications. In International Conference on Semantics - Posters & Demos (SEMANTiCS), 2015.
Journals:
J. Tirana, D. Tsigkari, G. Iosifidis, and D. Chatzopoulos. Minimization of the Training Makespan in Hybrid Federated Split Learning. IEEE Transactions on Mobile Computing (TMC), in press, 2025.
D. Tsigkari, G. Iosifidis, and T. Spyropoulos. Quid pro Quo in Streaming Services: Algorithms for Cooperative Recommendations. IEEE Transactions on Mobile Computing (TMC), 23(2):1753-1768, 2024.
D. Tsigkari and T. Spyropoulos. An Approximation Algorithm for Joint Caching and Recommendations in Cache Networks. IEEE Transactions on Network and Service Management (TNSM), 19(2):1826–1841, 2022.
G. Neglia, D. Carra, M. Feng, V. Janardhan, P. Michiardi, and D. Tsigkari. Access-time aware cache algorithms. ACM Transactions on Modeling and Performance Evaluation of Computing Systems (TOMPECS), 2(4): 1-29, 2017.
Telefonica’s Principal Investigator (PI) in the EU Horizon Europe project TaRDIS
Contributor in 6G-RIEMANN and MAP-6G projects
firstname.lastname[at]telefonica.com