Hardware & Firmware Engineering
Production-ready PCBs and firmware for IoT and embedded systems — from schematic to shipped device.
hello@sivakov.tech
- 10+ Years Experience
- 50+ Projects Completed
- 100% Job Success
- 5.0 Upwork Rating
Services
End-to-end embedded systems engineering — hardware, firmware, and everything it takes to get a device into the real world.
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PCB Design
2–6 layer KiCad designs with full ERC/DRC sign-off, production-ready Gerbers, BOM, and CPL for JLCPCB.
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Firmware Development
ESP32 and nRF52 firmware in ESP-IDF, C/C++. BLE, WiFi, Matter, HomeKit, NFC, 433MHz.
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Prototype to Production
From first board to assembled, tested hardware — component sourcing, PCBA coordination, and bring-up.
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Schematic & Layout Review
Independent audit before manufacturing. Catches errors in schematics, layouts, and component choices.
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Enclosure Design
Custom 3D-modeled enclosures in Fusion 360 — board mounting, connector cutouts, print-ready STL.
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Consulting
Component selection, architecture, communication protocols — technical advice before you commit.
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Full-Stack Embedded Engineering
I've spent 10+ years across embedded systems, software engineering, and technical leadership — working with startups, corporate teams, and directly with clients as an independent engineer.
I recently went fully independent, focusing on embedded projects — freelance, consulting, and technical partnerships where deep technical ownership matters.
- Fixed-price projects with clear deliverables
- Direct communication, no middlemen
- PCB design and firmware under one roof
What clients say
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“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
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“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
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“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
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“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
- All reviews
Have a Device to Build?
Describe your project and I'll get back to you with a timeline and fixed price.