Dmitrii S.
Freelancer10+ years developing embedded systems and system-level software - from RTOS firmware to complete IoT products.
Author of Tendry Lab - open-source platform (firmware, CI, data infrastructure, UI) for environmental scientists and early-stage hardware startups who need to bootstrap product development without deep embedded expertise. See the portfolio items for more details: control-components, ci-components, device-hub, device-ui.
Recent work: Built patented WiFi mesh system for industrial hydrogen devices. Led firmware teams through CE certification and mass production.
ESP32 Firmware Development:
- 6+ years commercial experience
- Collaborated with Espressif on WiFi Mesh, BLE, and NVS improvements
- Deep expertise in resource-constrained environments and real-time systems
Core technology stack:
- Programming Languages: C, C++17/C++20, Python
- Platforms: ESP32, STM32, FreeRTOS, Linux/POSIX
- Hardware Design: PCB design (KiCad), component selection, bring-up, JLCPCB manufacturing
- Communication Protocols: TCP/IP, UART/SPI/I2C, Modbus, MQTT, BLE
Open to: firmware development, driver work, protocol implementation, IoT products, system software.
Serbia#39 / 5,642Top 0.69%
Dmitrii S. earns an estimated $6.1k/mo. That's 4.2× the typical freelancer and more than 99.65% of everyone we track.