Vadym

VADYM ZAKREVSKYY
I have around four years’ experience in embedded development and have also written
some Java services. I am flexibility, responsibility and have strong communication skills.
I am looking for a Junior Java Developer position.
Address: Ukraine, Vinnytsia city
Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
Mobile: [відкрити контакти](див. вище в блоці «контактна інформація»)
Telegram: @Vadimzakreva
Date of birth: 06.04.1992

EMPLOYMENT HISTORY:
2018 – Now: Sinai R&D: Middleware, Firmware Embedded C/C++ Developer
2017 – 2018: VNAU: Assistant of the Department
2015 – 2017: VNAU: Laboratory Assistant of the Department

EDUCATIONS:
Vinnytsia National Agrarian University (VNAU, Faculty of Agricultural Mechanization, Department of
Agricultural Machinery and Equipment):
2014 – 2018: Postgraduate Student
2009 – 2014: Student (MCs, engineer researcher)

SKILLS:
 C/C++, Python, Java.
 OOP, multithreading, exceptions, stream API, collections, maven.
 Programming of microcontrollers: Qualcomm, STM32, ESP-32, NORDIC, etc.
 Git, SSH, Docker, different IDE.
 Languages: eng – B1; ukr, rus – native.

WORK EXPERIENCE AND ACHIEVEMENTS:
 Around 4 years in Embedded Developing.
 Android Open Source Project (java services, bash, rc- and init- scripts, properties, device-tree).
 Developed / customized a lot of the Android and embedded systems drivers for the different
components. Achievements in production:
o DMD (digital micromirror device): developed Android Java service and customized micromirror
driver to correction «keystone» distortion of projected image. Java service gets the events from
accelerometer and magnetometer by (SensorEventListener) computed and converts this data to get the tilt
degree of necessary axis (SensorManager) and then pass it to micromirror driver to perform correction.
o OTA (Over-the-air update): developed multi-component system (on device (microcontroller) side,
remote server side, control utility side and dependencies) to remote updating.
o Bluetooth and BLE (Bluetooth low energy): developed driver that connects the some device with
smartphone to play sounds. Implemented the secure pairing process.
o PMIC (Power management integrated circuit): developed driver that controls and monitors power
system of some device (get battery percentage, states, so on).
o Flash: developed the driver that implements the internal flash memory workflow.
o LEDs: developed driver that controls by the LEDs lights effects that depend on current state of
system or on different influences.
o Sensors and protocols: temperature sensors, level meters, touchscreen sensor, Hall sensor, I2C,
UART, MQTT and implemented few custom protocols.