Nikita S.

I build embedded devices end to end — schematic, PCB, firmware, and the files a factory needs to produce them. Most of my work is wireless devices, battery or mains powered, that have to keep working outside a lab. What I can do for you: • Schematic design and multilayer PCB layout in KiCad, fab-ready outputs and a BOM built around parts that are actually in stock • Firmware in C and C++ — ESP-IDF, Zephyr, FreeRTOS, bare metal • Bring-up, debugging and validation on real hardware, on my own bench • Circuit simulation in LTspice for the parts worth checking before a board is ordered • Taking an existing design to production, or picking up a project someone else left unfinished • Functional enclosures and brackets in Fusion 360 when a board needs to become a product Platforms and protocols: • ESP32 / ESP-IDF, Silicon Labs, nRF52 / Zephyr, STM32 • Bluetooth LE, Wi-Fi, Thread, Matter, HomeKit • Sub-GHz 433 / 315 MHz, infrared, LTE • I2C, SPI, UART, USB How I work: Nothing goes to the fab before full ERC and DRC. Firmware is written with the logic separated from the hardware and covered by tests that run on a host machine in CI, so changes do not break things quietly and your team can maintain the code later without reverse-engineering it. If it helps, I can have the first boards sent to me and bring them up here before you get one. I prefer to keep decisions in writing, but I am happy to get on a call when something needs discussing properly. Send me a spec, a sketch, or a board that needs finishing, and I will tell you what it takes.