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“►I've work with a lot of freelancers on this platform. Most of them lacks on communication and sometimes even on knowledge, ►Guillermo is perfect, pretty professional, fast and good-hearted. ►The project is not that trivial for me, and he guided me on really elemental actions to make the software run on a linux platform.”Danilo A. 2 months ago
Ansi C++: Working with PNG to embedd to PDF
“I would give Guillermo 10 stars instead of 5 if possible!”Andreas G. 4 months ago
Arcade game in DOS assembly
“"Very reasonable, all clear, without any issue. You can trust at 100% to him. For sure I will work with him again. Recommended. Great professional."”Paul R. 4 months ago
Simple Translator based on txt [C]
“Very good work, professional approach to the project.”Dawid F. 5 months ago
Senior Software DeveloperSep 2020
Madrid. Embedded Software Development. C over linux in railway systems.
Embedded and Backend Developer, C++, CApr 2020
PID (temperature control) (C) over STM32F103 with freeRtos & libopencm3. Linux tools: stlink, make, gcc toolchain, gdb. Stm hardware management: USART, RTC, PWM, ADC. ESP32 (IOT project), MQTT, Lora, in order to grab and publish some sensor data (power meter, water meter and temperature) on the broker, Tools: arduino ide, platformIO. ESP8266/ESP32 WebSocket client/server implementation in order to do some streaming. Tools: arduino ide, platformIO, python (in order to test some features).
Senior ConsultantMar 2019 - Mar 2020 (1 year)
(Legacy) Risk Exposition Calculation Engine, C++ over windows: new features analysis, documentation (laTeX), implementation and maintenance. Financial mathematics, numerical calculation, statistics. STL, multithreading, SQL, boost, IBM MQ, soci odbc lib. Tools: MSVC142, Git, Hudson, python module tests, google UTs and some linux tools (awk, vim, make, bash, grep, etc). here my work. Departure reason: project development was done because big data migration.
Senior DeveloperJan 2018 - Mar 2019 (1 year)
BOEING Research & Technology Europe: DAA (Detect and Avoid) Simulation/Tests tools development over Windows 10. Trajectory data management(radar, adsb, etc) .QT Widgets(C++), MSVC2019/QTCreator. UDP client/server implementation. VxWorks. Libs: POCO, Eigen. win IPC and openDDS Kalman filter (noise) implementation (lineal model). Tools: Google UTests, Svn, Cmake. Google Earth live connection with simulation in real time (using NMEA and KML). Patent Draft.
Senior DeveloperMar 2012 - Jan 2018 (5 years)
SASN. Distributed system C/C++ over Linux. New features development in radius module (c++). Module tests development (python). Scripting: bash, perl, python Libraries: DPDK lib, SimpleXml, Boost, snappy (google), scapy(python). Tools: Netbeans, Git, Gdb, Valgrind, Scons, Maven, xlst, RPM packaging+postscripting, autoyast2, uml, wireshark, etc. TCP/IPV4/6 suite, Radius and diameter(protocol API implementation), ICMP(protocol API implementation), http, etc.. IPC: shared memory, pipes, etc.
Ingeniero en Electrónica1986 - 1993 (7 years)
Master Automatizacion Industrial2005 - 2006 (1 year)
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