→ A continuation of the work as a developer with ITRIAD Pesquisa e Desenvolvimento, acquired by Venturus.

→ Has written C/C++ and Java libraries for credit-card terminals running embedded Linux and Android. • One of the libraries targeted millions of users of one of the client’s company main products. • The software involved multithreading, graphical libraries, wireless communication, drivers etc.→ Has created libraries for thermal printers and related support software, for example a C++ library for communication with Windows/Ubuntu.→ Has written Java libraries with C/C++ JNI code for usage in high-security payment applications. • Libraries focused on PCI certifications, i.e., international standards for mobile payments. • The software involved Android inter-process communication, memory isolation etc.→ Technologies used: Makefiles; CMake; Android SDK/NDK; Git; Docker; Javadoc; Doxygen

→ Created AVR firmware using C and Assembly for a client’s product targeting factories. • The software involved functions such as DC motor speed control, relay driving, button detection, inductive sensing, high-frequency signals sampling etc. • Bare-metal firmware using superloop and state-machines.→ Developed ARM Cortex-M firmware using C for ATM embedded systems, such as capacitive sensors and alarm systems. • The software involved functions such as cryptography using integrated circuits, real-time firmware upgrade and multitasking using RTOS/Keil RTX.→ Helped in the design, correction and improvement of the embedded systems hardware.→ Technologies used: USART; I2C; SPI; USB CDC/HID; Atmel Studio; Keil uVision; Altium Designer

→ Gathered requirements for electrical engineering regarding the power circuits of several projects at the university. • Compiled a list of characteristics of various equipment such as contactors and transformers. • A case study was conducted in the university restaurant with quantitative and qualitative methods.→ Technologies used: Excel; AutoCAD