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Nikita Sivakov

Client Reviews

What clients say

All reviews are from verified Upwork projects.

“PCB project completed smoothly with practical feedback on design, and entered manufacturing smoothly.”

James D.

Shepparton, AU

Raspberry Pi Pico PCB Gerber File Creation

“Nikita provided a very thoughtful and professional technical consultation. He did not just answer the questions mechanically, but looked at the project from both an engineering and product viability perspective. What I appreciated most was that Nikita was not trying to simply sell development work. He helped me think more realistically about the project, challenged weak assumptions, and suggested a safer step-by-step approach before investing in a full prototype. Communication was clear, detailed, and professional. I would gladly work with Nikita again on the next technical stage.”

Ilnur S.

Los Angeles, US

Technical Consultation for Waterproof Shower Electronic Device

“Nikita was fantastic to work with. He took my concept for an ESP32-C3 + WS2812B PCB and turned it into a solid, production-ready design. Super responsive, knowledgeable, and easy to communicate with. Everything worked as intended — highly recommend and will definitely use him again.”

Kyle H.

Surrey, CA

PCB Design — ESP32-C3 Wireless Device, WS2812B LED Ring, JLCPCB Ready

“Nikita delivered a professional 4-layer PCB design for my IoT product (ESP32 + A7670E LTE module with multiple analog sensors). Deliverables were excellent: clean DRC report, complete JLCPCB production files (Gerbers, BOM with LCSC codes, CPL), bonus LTspice simulations well beyond the agreed scope, and thoughtful component placement. Communication was excellent throughout — detailed review questions were answered with annotated renders and datasheets. Would absolutely hire again. Highly recommended for anyone needing a serious PCB design done right the first time.”

Liran G.

Mivtza Petah Tikva, IL

PCB Design — ESP32 IoT Smart Boiler Monitor (KiCad + Gerber)

“Nikita did an excellent job on this project. Communication was fast and clear, and all answers were on point. He not only delivered the requested MVP firmware for the ESP32 but also helped with additional related tasks. Highly professional and reliable — I would definitely work with him again.”

Viktor M.

Rottenburg, DE

ESP32 433MHz Radio Retransmitter Firmware

“Outstanding work from Nikita! Perfect communication, clean and reliable code, and a true extra-mile attitude when it came to solving tough problems. Easily one of the best Upwork experiences I've had so far. Definitely looking forward to rehiring!”

Malte G.

Seedorf, CH

Firmware for ESP32-S3 Based Keypad with Relay Hardware

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