| 2015-2018 | 
	    Associate Professor, Department of Computer Science, University of Iceland, Iceland
	     | 
	  
	  | 2012-2015 | 
	    Senior Research Scientist, Department of Communications and Networking,
	      Aalto University (TKK), Finland | 
	  
	  | 2009-2011 | 
	    Senior Research Scientist, Department of Computer Science, 
	      Aalto University (TKK), Finland | 
	  
	  | 2006-2009 | 
	    Senior Researcher, FTW, Vienna, Austria. | 
	  
	  | 2005-2006 | 
	    Post doc researcher, Q2S, NTNU, Norway. | 
	  
	  | 2001-2005 | 
	    Senior Research Scientist, 
	      Networking Laboratory, TKK, Finland. | 
	  
	  | 1998-2001 | 
	    Research Scientist,
	      Networking Laboratory, TKK, Finland. | 
	  
	  | 1997-1998 | 
	    Research Assistant, Networking Laboratory, TKK, Finland. | 
	  
	   | 
	      (Laboratory of Telecommunications at that time.) | 
	  
	
	
	  | 2016-2017 | 
	      FQ4BD project,
	      studying large-scale parallel server systems emerging in the context of
	      cloud computing and Big Data. (PI)
	     | 
	  
	  | 2013-2017 | 
	      TOP-energy project,
	      analyzing server farms in the energy-aware context.
	     | 
	  
	  | 2012-2015 | 
	      PDP project,
	      studying searching and indexing content in opportunistic networks.
	     | 
	  
	  | 2010-2012 | 
	      RESMAN,
	      Resource Management in Delay-tolerant Mesh and Ad-hoc Networks.
	     | 
	  
	  | 2000-2010 | 
	      Java applets
	      written long ago for demonstration purposes.
	     | 
	  
	  
	  | 2009-2011 | 
	      Metropol,
	      Metropolitan Area Demand Responsive Transport project 
	      (see also Metropol@Comnet).
	     | 
	  
	  | 2008-2009 | 
	      PRIvacy-aware Secure Monitoring (PRISM)
	      project, applications of cryptographic primitives in traffic monitoring systems
	     | 
	  
	  | 2008-2009 | 
	      Cost Action IC0703, Traffic Monitoring and Analysis (TMA)
	     | 
	  
	  | 2006-2009 | 
	      Data Analysis and Reporting in Wireless Networks (DARWIN);
	      performance, anomaly and security studies in an operational 3G network
	      based on network traffic measurements.
	     | 
	  
	  | 2005 | 
	    AHRAS project, mobility models and
	      characterization of traffic load in large wireless multi-hop networks | 
	  
	  | 2004 | 
	    FIT project, studies of (RWP) mobility models
	      and various network level problems in optical networks | 
	  
	  | 2001-2003 | 
	    Optical Access Networks (OAN) project,
	      RWA and optical burst switching (OBS) in optical access networks | 
	  
	  | 1997-2000 | 
	    COST 257 project,
	      routing and wavelength allocation (RWA) problems in all-optical networks |