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$30 USD / hour
Flag of UKRAINE
horodok, ukraine
$30 USD / hour
It's currently 12:43 PM here
Joined September 29, 2021
1 Recommendation

Oleksandr G.

@AlexandrGergel

 5.0 (9 reviews)
4.8
4.8
92%
92%
$30 USD / hour
Flag of UKRAINE
horodok, ukraine
$30 USD / hour
89%
Jobs Completed
100%
On Budget
100%
On Time
N/A
Repeat Hire Rate

C/C++/Python | RTOS/Embedded Linux & Android

Experienced embedded system engineer with a passion for bringing products to life. With more than 15 years of experience in the industry, has a proven track record in firmware development, hardware integration, and product launches. Driven by a desire to solve problems and create value for customers. ☑️ language Assembly, C Programming, C++, Python, Shell script, Makefile ☑️ System Programming Real-time Operaing systems, Embedded Linux, Linux device driver, Windows device driver ☑️ High level programming Win32, Linux user space, Android NDK, Qt, MFC ☑️ Firmware Programming PIC microcontroller, ATMEL, ATMEGA, STM32, Nordic, ESP32, Arduino, Raspberry PI ☑️ Embedded Communication protocol I2C, Serial Peripheral Interface(SPI), UART, USB, GPIO, Controller Area Network(CAN), Recommended Standard 232(RS232), one-wire, Recommend Standard 485(RS485), Bluetooth ☑️ Hardware design Circuit design, schematic design, PCB design, Multi-layer PCB design, Electronic design, Altium designer ☑️ Debugging JTAG, GDB, Print ☑️ Reversing IDA, OllyDbg, 2-layer PCB reversing ☑️ Security Executable file behavior analyzing, Executable file static analyzing Website security analyzing, Troubleshoot PC security level
Freelancer Electronics Engineers Ukraine
See all Electronics Engineers in Ukraine

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Portfolio

10666934
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
10666933
The previous cashier system in the shop is running on a windows system. However, the windows system needs to be equipped with hardware that can run windows, so the cost is very high, and the cash register system uses very limited software. So the customer wants to develop an Android-based POS machine. The client offered detailed hardware information, such as what interfaces and dimensions should be around. We designed the development board then based on the hardware characteristics of the development board, we carried out the configuration of the Android system. Android version is 5.0 lollipop CPU RK3288 & RAM 4GB 32G eMMC Support 2 touch screen Support hot boot Support 8-channel USB2.0 Support HDMI
POS Machine Android System Customize
10666926
Musical Spectrum Analyzer (MSA) is one of our real-time display systems. It reacts in real-time with music tone. The 14-band sampling frequency points are: 42Hz 100Hz 280Hz 700Hz 1.6kHz 4kHz 10kHz 63Hz 160Hz 400Hz 1kHz 2.5kHz 6.25kHz 16kHz Working voltage: 5V Audio interface: Bluetooth https://arksoft.dev/musical-spectrum-analyzer/
Musical Spectrum Analyzer
10666899
Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.
Air Quality Monitor Systems
Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.
Air Quality Monitor Systems
Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.
Air Quality Monitor Systems
10666934
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
High-speed (HDMI, DDR) HDI (high-density interconnect) with blind and buried vias Fine pitch BGAs 0.4 mm and 0.5 mm Power boards RF Bluetooth Wi-Fi Lora Design with fine-pitch BGA and QFN assembly Flex and rigid-flex design Chip evaluation and chip characterization Radio frequency design Stacked and staggered microvias IPC class 2 and class 3/ES DFM/DFA layout validation included
PCB Design
10666933
The previous cashier system in the shop is running on a windows system. However, the windows system needs to be equipped with hardware that can run windows, so the cost is very high, and the cash register system uses very limited software. So the customer wants to develop an Android-based POS machine. The client offered detailed hardware information, such as what interfaces and dimensions should be around. We designed the development board then based on the hardware characteristics of the development board, we carried out the configuration of the Android system. Android version is 5.0 lollipop CPU RK3288 & RAM 4GB 32G eMMC Support 2 touch screen Support hot boot Support 8-channel USB2.0 Support HDMI
POS Machine Android System Customize
10666926
Musical Spectrum Analyzer (MSA) is one of our real-time display systems. It reacts in real-time with music tone. The 14-band sampling frequency points are: 42Hz 100Hz 280Hz 700Hz 1.6kHz 4kHz 10kHz 63Hz 160Hz 400Hz 1kHz 2.5kHz 6.25kHz 16kHz Working voltage: 5V Audio interface: Bluetooth https://arksoft.dev/musical-spectrum-analyzer/
Musical Spectrum Analyzer
10666899
Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.
Air Quality Monitor Systems
Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.
Air Quality Monitor Systems
Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.
Air Quality Monitor Systems

Reviews

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Showing 1 - 5 out of 9 reviews
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5.0
$25.00 USD
MicroSD Text File Recorder Using SPI
Excellent Freelancer, highly trained in Firmware and Software for embedded applications.
C Programming
Electronics
Microcontroller
STM32
User Avatar
Flag of Jaime Ernesto M.
@Etechcol
•
4 months ago
5.0
$200.00 USD
Query linux shared-memory data by building a parser in C/C++.
Oleksandr (Alex) is the best technical expert you could find for any C/C++/Linux/Shared Memory/IPC work! Low level programming is his expertise and he understands the work quickly. Really encourage you to work with Alex.
C Programming
Linux
Software Architecture
C++ Programming
UNIX
+1 more
User Avatar
Flag of Mayur P.
@mayuraho
•
1 year ago
5.0
$800.00 USD
Project for Oleksandr G.
He did a great job!!! A+++ Went above and beyond and provided extra solutions which we really appreciate it. I started this project with one thing to get done, but I added more milestones within this project soon as he was done with the initial work, as he was doing a such good job. We will hire him again.
Electronics
Electrical Engineering
PCB Layout
Arduino
+1 more
User Avatar
Flag of Sonny M.
@ilinkpro
•
1 year ago
5.0
$600.00 USD
PCB Design & Microcontroller programming
Very good and experienced, nice communication!
User Avatar
Flag of Attila Alin K.
@alinkoppandi
•
2 years ago
0.0
$10.00 USD
Project 33809921 has been deleted
The project is not completed according to the dispute
N
Closed User
@NYCyber
•
2 years ago

Experience

Senior RTOS Engineer

Jabil
May 2021 - Present
1. Wearable device development with Linux system 2. AOSP building, RTOS configuration 3. RTOS device driver development with various sensors 4. BLE communication implementation 5. Setup remote hardware debug environment

RTOS, Embedded Linux Engineer

BQ
May 2015 - Mar 2020 (4 years, 10 months)
Karaoke TV System development 1. Developing KTV system on STB device 2. Customizing the uCOS RTOS system 3. Deploy audio processing module(From FFMPEGՅ to system 4. Display subtitles with custom embedded vector font(MVF) 5. Made FAT32 filesystem encryption tool 6. Made ELF file parse tool Android POS machine development 1. Android OS building with hardware configuration 2. Hardware PCB Designing with Altium designer 3. Character Linux driver development 4. Block Linux driver development

Education

MDCS

National Technical University of Ukraine 'Igor Sikorsky Kyiv Polytechnic Institute', Ukraine 2001 - 2006
(5 years)

Qualifications

QCS

National Technical University of Ukraine
2009
Qualifications of Computer Science.

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Verifications

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Top Skills

Electronics 4
Circuit Design 4
Electrical Engineering 3
PCB Layout 3
C Programming 2

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