Олександр

OLEKSANDR VOLOSHYN
Embedded Firmware Developer
Kharkiv, Ukraine (remote) | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Telegram | LinkedIn
Selected Project Write-ups: Project Write-ups

CORE TECHNICAL SKILLS
(Technologies used in hands-on projects and practical development)
• Languages: C, C++, AVR Assembly
• Microcontrollers & Platforms: ESP32, AVR
• Development Tools: PlatformIO (Arduino framework), oscilloscope, logic analyzer, multimeter
• Interfaces & Protocols: SPI, I2C, UART, ADC, DAC, PWM, USB-MIDI, ESP-NOW
• Sensors & Peripherals: IMU, heartbeat sensors, strain gauges, LED drivers (WS2812), displays
• RTOS & System Design: FreeRTOS, asynchronous task architecture, multi-threaded firmware
• Hardware & PCB: Schematic design, PCB layout (EasyEDA), soldering, hardware prototyping

ADDITIONAL TECHNICAL KNOWLEDGE
(Familiarity through study, experimentation, or limited practical use)
• Python, Rust, PHP, JavaScript | STM32, RISC-V | Git, STM32CubeMX, Keil | Basic DSP | LLM API

PROFESSIONAL EXPERIENCE
Personal Embedded Projects (Part-time) January 2021 - Present
• Studio Light with Adaptive Color Temperature Control. Resolved the brightness vs. color-
temperature trade-off using custom scaling logic, maintaining intuitive usability while enabling
up to 2x brightness within hardware limits.
• Wireless IMU-Based MIDI Controller. Implemented motion processing and achieved low-latency
communication between controllers and host using ESP-NOW.
• Wireless Strain Gauge Sensor for Material Testing. Enabled safe remote load testing through
BLE connectivity and integration with third-party application.
• RTOS-Based WS2812 LED Effects Library. Designed a multi-layer architecture for building
complex lighting effects with clear composition and reliable asynchronous execution using
FreeRTOS.

Embedded Developer (AVR Assembly) September 2003 - January 2005
Medical Devices & Industrial Automation

• Developed firmware in AVR assembly for light and sound stimulation medical device at Dx-
Systems (2003–2004). Device remained in use after deployment.
• Completed additional contract projects in 2005, including automation firmware, schematic and
prototype building for metal profile cutting equipment.
QA Engineer -> Project Manager February 2008 - August 2009
Nix Solutions (Web Development)

• Performed software testing and quality assurance. After 7 months promoted to project
management role.
• Successfully delivered 5+ projects within time and budget limits. Developed strong customer
communication and practical problem-solving skills.

PRODUCT & MANUFACTURING EXPERIENCE

Independent Product Designer (Handmade Accessories) Self-employed, 10+ years

• Managed the full product lifecycle and small-scale manufacturing process - from concept design
and prototyping to tooling, sales, and customer support.
• Reached Top-10 ranking among Ukrainian Etsy shops; products were featured in multiple Etsy
email campaigns and on the main page. Maintained a 4.9 stars shop rating over multiple years.
• Built strong communication skills through collaboration with international English-speaking
customers, consistently receiving highly positive feedback and resolving issues effectively.

EDUCATION

Specialist Degree in Radio Physics & Electronics September 2000 - January 2006
National Technical University “Kharkiv Polytechnic Institute”

Computer Academy “Step” — Kharkiv, Ukraine September 2005 - February 2006
Coursework in C programming, computer graphics, and PC hardware/administration

PROFESSIONAL COURSES October 2025 - February 2026

• CS50's Introduction to Artificial Intelligence - HarvardX / edX
• Building a RISC-V CPU Core - The Linux Foundation / edX
• Git for Distributed Software Development - The Linux Foundation / edX
• Introduction to Linux - The Linux Foundation

LANGUAGES: English (B2), Ukrainian (C2)

FIELDS OF INTEREST: Ecology and sustainability | Pet care | Music technology | AI & ML | Education |
Gaming | Neurofeedback and biofeedback systems | Wellness and rehabilitation devices