+10 years in startups, deep knowledge in research and development in anything web, mobile or wifi. Specialties: Wifi, Geolocation, E-commerce, Social Commerce, Cloud computing, Embedded devices, Analog and digital electronics, VoIP, behavioral targeting - at huge scales.

Core Services Manager @ Management of Architecture, Infrastructure and database teams to provide the building blocks for development teams. Also helping to keep and improve the general work culture within Luiza Labs. From December 2014 to Present (1 year 1 month) Senior developer @ From May 2014 to December 2014 (8 months) Co-founder and CTO @ Development, maintenance, implementation and operation of next-generation wifi platform. From November 2010 to May 2014 (3 years 7 months) CTO @ From November 2012 to July 2013 (9 months) Development Manager @ From July 2012 to October 2012 (4 months) São Paulo Area, BrazilConsultant @ Architecture and core development of magazinevoce.com.br. From May 2011 to February 2012 (10 months) Senior Software Engineer @ Open Source, VoIP, FreeSWITCH, Linux and Windows From September 2010 to June 2011 (10 months) Profiling & Social Media @ Insights, development and maintenance of Profiling and Social Media products, always ensuring they run in a scalable architecture. From September 2009 to August 2010 (1 year) Owner / Systems Engineer @ Research on VoIP Open Source projects, as Asterisk, Callweaver, FreeSWITCH, SipX and Yate. Development, integration and deployment of VoIP systems based on SipX, FreeSWITCH and Asterisk. Partial implementation of QSIG-GF on Asterisk. Integration/CTI with a variety of systems, as SAP and Lotus Notes. From December 2006 to July 2009 (2 years 8 months) Consultant @ Architecture and development of web backend systems, focusing on scalability, statistical metrics and security. Servers, software and network administration and security. From 2007 to 2009 (2 years) Consultant @ Development of VoIP applications and tools, servers administration and security. From 2007 to 2009 (2 years) Research and Development Manager @ Development of VoIP solutions based on open source software. Deployment of Asterisk-based servers using IAX2, SIP, ISDN and MFC/R2. From August 2005 to November 2006 (1 year 4 months) IT manager @ Lead a team of Linux developers and network administrators on building custom solutions using open source software. Implementation of LTSP servers and networks, Qmail, OpenLDAP and Apache clusters. Tools for video capturing (video4linux), visualization and streaming. Logistics software for programming airplanes parking and so on. From June 2002 to August 2005 (3 years 3 months) Development analyst @ Development of one of the first versions of the Vex gateway. From 2003 to 2003 (less than a year) Development analyst @ Development, integration and maintenance of bioinformatics software on Unix/Linux platforms. From July 2001 to February 2002 (8 months) Development Analyst @ Development and maintenance of web systems. Deployment and tunning of web servers. From May 2000 to April 2001 (1 year)

Universidade São Judas Tadeu Arnaldo Pereira is skilled in: Linux, Apache, Open Source, Python, Unix, MySQL, Cloud Computing, E-commerce, Git, Software Development, Shell Scripting, C, Google App Engine, Operating Systems, Github