EXPLORE


2.6
2.6
100%
$20 USD / Hour
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China (2:22 AM)
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Joined on April 20, 2026
$20 USD / Hour
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I am a China-based, production-ready embedded systems engineer who bridges the gap between firmware, PCB, and FPGA design — with deep manufacturing expertise to take your IoT product from prototype to mass production at scale. With 10+ years of hands-on experience and deep integration with JLCPCB, PCBWay, and SMT assembly lines, I don't just design prototypes. I design for real manufacturing. ⚡ Core Strengths Embedded & IoT – STM32, ESP32, nRF52, FreeRTOS, MQTT, BLE, LoRaWAN Firmware – C/C++/Rust, bare-metal, RTOS, OTA, ultra low-power PCB for Manufacturing – JLCPCB, PCBWay, upto 24-layers, DFM rules, panelization, component sourcing FPGA – Verilog/VHDL, Xilinx/Intel, custom co-processing 🏭 Production-First Mindset ✅ JLCPPCB/PCBWay ready – Gerbers, BOM, CPL files, pick-and-place optimization ✅ Component sourcing – LCSC, Taobao, direct factory channels (cost down 30–50%) ✅ Assembly-line friendly – Test points, fiducials, thermal relief, footprint validation ✅ Firmware for mass production – Calibration, serialization, DFU, factory test modes 🇨🇳 Based in China. Built for scale. No translation delays. No component shortages panic. No "will this even assemble?" I speak manufacturer language — and I get it done. 🚀 Let’s go from prototype to production — fast. Need a JLCPPCB-ready design, a factory-testable firmware, or a full IoT product shipped? Message me. Let’s manufacture.
Verifications
On time
100%
On budget
100%
Accept rate
100%

IoT & Wearable Development Expert

IoT & Wearable Development Expert

IoT & Wearable Development Expert

IoT & Wearable Development Expert

IoT & Wearable Development Expert

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

IoT & Wearable Development Expert

IoT & Wearable Development Expert

IoT & Wearable Development Expert

IoT & Wearable Development Expert

IoT & Wearable Development Expert

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design

Professional Multi-layer PCB Design
Experty in circuit design. Good communication to clearly state the steps to rearch the design goal. Very fast respond. He can go from idea to deviver finished product.
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Shenglin did exactly what I needed and turned it around in a day. Will definitely be working with him again!!!
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Shenglin is professional. Fast delivery. Good quality. Surely recommend for embedded projects.
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Experience
Embedded System Engineer
Jun, 2021 - Sep, 2024
•
3 years, 3 months
Geniatech
Jun, 2021 - Sep, 2024
•
3 years, 3 months
No Description Provided
Jun, 2021 - Sep, 2024
•
3 years, 3 months