2011 – Associate Editor – Communications Theory - IEEE/SBrT Journal of Communication and Information Systems.
2010 – General chair of the 7th International Symposium on Wireless Communications Systems (ISWCS), which was sponsored by the IEEE Communications and Vehicular Technology Societies.
2010 – Senior member IEEE.
2010 – Associate Editor – EURASIP Journal on Wireless Communications and Networking
2008 – Associate Editor – The Open Signal Processing Journal
2008 – Associate Editor – International Journal of Ultra Wideband Communications Systems
2008 – Guest Associate Editor IEICE Transactions on Fundamentals, Special Section on Signal Processing
2006 – Member of the IET and IEEE.
2006 – Member of various IEEE TPC including GLOBECOM, VTC, ICC, etc
2000-2005– Student member of IEEE and the Brazilian Telecommunications Society
2006 – Member of Academic Staff, Department of Electronics, University of York, UK – currently a Reader.
2009 – Director of Ipanema Engineering.
2005- 2010 - Consultancy for private companies in the areas of teletraffic assessment and link design, speech coding (voice over IP), spread-spectrum systems, sensors and satellite communications.
2001-2005 - Consultancy for the Brazilian Ministry of Defense.
1998-1999 - Trainee/Engineer at Siemens Brazil, telecommunications division. Programming of private switching systems and PABX .