Janani Kehelwala

Researcher, Engineer, Reader, Writer
About Me
Profile Image

I am a doctoral researcher at University of Oulu, Finland, pursuing my PhD in Communications Engineering. My research interests lie in the intersection of Security Engineering and Machine Learning, namely Multi-Objective Optimization, Reinforcement Learning and Decentralized Agency. These interests unify my prior interests in privacy of decentralized federated learning, distributed consensus protocols and security applications of game theory.

I received my Bachelor's degree in Computer Security from University of Plymouth, United Kingdom in 2016, and my Master's degree in Computer Science from University of Moratuwa, Sri Lanka in 2021. I have worked as a Software Engineer and an Information Security Engineer in Sri Lanka, accumulating over 4 years of experience in the industry, followed by several years as a researcher.

While my background is in Computer Science, I am enthusiastic about two aspects; decentralization as an avenue to provide more control to the general public and interdisciplinary approaches to problem-solving. Do feel free to contact me for collaborations or if you have any questions.

Research
Conference Proceedings
  • J. Kehelwala, Y. Siriwardhana, T. Hewa, M. Liyanage and M. Ylianttila, "Decentralized Learning for 6G Security: Open Issues and Future Directions," 2024 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), Antwerp, Belgium, 2024, pp. 1175-1180, doi: 10.1109/EuCNC/6GSummit60053.2024.10597004.
Demonstrations
  • J. Kehelwala, Y. Siriwardhana, T. Hewa, and M. Ylianttila, "Defense against poisoning in federated learning systems for autonomous driving," Demonstration, Brooklyn 6G Summit, 2023. [Online]. Available: https://cwc-ns-6gcure.github.io/BrooklynSummit2023/
Posters
  • J. Kehelwala, Y. Siriwardhana, T. Hewa, and M. Ylianttila, "Reducing privacy risk of functional marginalization in decentralized federated learning" Poster Presentation, Arctic AI, Oulu, Finland, 2025
Thesis
  • K. G. J. H. Kehelwala, "Security and reliability of rational players in distributed consensus," MS Thesis, University of Moratuwa, Sri Lanka, 2021. [Online]. Available: http://dl.lib.uom.lk/handle/123/20440
Chronology
Mar 2023 - Present
Doctoral Researcher
University of Oulu, Oulu, Finland
Jun 2022 - Nov 2022
Application Security Engineer
Pearson Lanka, Colombo, Sri Lanka
Aug 2021 - May 2022
Information Security Engineer
Jan 2021 - Jul 2021
Information Security Specialist
Oct 2020 - Dec 2020
Associate Information Security Analyst
TechCERT, Dehiwala, Sri Lanka
Jan 2018 - May 2021
MSc in Computer Science (Spec. Security Engineering)
University of Moratuwa, Moratuwa, Sri Lanka
Dec 2018 - Feb 2020
Software Engineer
Sep 2017 - Jan 2018
Software Engineer
LSEG Technology, Malabe, Sri Lanka
Nov 2016 - Jul 2017
Associate Software Engineer
WSO2.Telco, Maradana, Sri Lanka
Jan 2013 - June 2016
BSc in Computer Security
University of Plymouth, Plymouth, United Kingdom
(Delivered at NSBM, Sri Lanka.)