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I provide PCB design, schematic capture, and PCB layout services using KiCad for ESP32, STM32, LED lighting, IoT, embedded hardware, and compact electronics products. My focus is reliable layouts, stable power delivery, thermal management, and DFM-aware designs ready for prototyping and manufacturing (Gerbers, BOM, Pick-and-Place / CPL), including JLCPCB and other PCB fabrication / assembly workflows. What I help clients avoid: • Noisy ADC readings caused by poor grounding or poor PCB layout • Unstable regulators, weak power rails, or power supply issues • USB, UART, CAN, RS-485, SPI, or I2C communication problems from routing mistakes • LED thermal and power distribution problems that reduce performance or lifespan • Costly PCB re-spins caused by avoidable design errors Recent work includes: • ESP32 boards with USB-UART and auto-programming circuits • STM32 mixed-signal boards with analog / digital grounding and layout separation • Buck converters with filtering and stable power stages • LED arrays, LED strips, and custom lighting PCBs • Compact PCB designs for wearables, consumer products, and small-form-factor electronics • Microcontroller development boards for embedded systems prototyping What I deliver: • Circuit design, schematic capture, and PCB layout • LED lighting and embedded hardware PCB design • Compact and space-constrained PCB layouts • Grounding, decoupling, and power distribution strategy • USB differential pair routing and interface design • 2-layer and 4-layer PCB stackups • Gerbers, BOM, Pick-and-Place / CPL files • Manufacturer-ready outputs for JLCPCB and other PCB fabs I aim to deliver practical, production-ready hardware designs that reduce iteration time and help projects move smoothly into prototyping and assembly.

7 years at Intel as an Electronics Design Engineer, now independent — every Upwork project rated 5.0. Tier-1 semiconductor companies bring me in for overflow PCB layout; for startups, I'm the expert they can't hire full-time. I'm the engineer to call when a board is too complex, too fast, or too power-hungry to get wrong on the first spin — or when you need measurements you can actually trust. Not the cheapest bid; the one who gets it right. To date, each board I've designed has come up working the first time. "Within minutes it was obvious he understood the problem at a level I hadn't encountered before — he was already asking questions our own team hadn't thought to ask. They found several issues that would have been a nightmare to deal with after the fact ... the board went to manufacturer on time, and I actually felt good about it. What I appreciated most was that Ethan just owned it — the same attention to detail that caught those issues carried through the entire engagement." — Daniel L., Founder, VC-backed hardware startup · February 2026 Need one engineer to own your whole board, concept to debugged hardware? Or extra senior hands on an overflow layout? Either way, you get the same silicon-grade rigor. Through my firm, EGS Engineering, I cover the full range of electronics and PCB design — a broad base of everyday board work, with deep specialization in two areas: ▸ HIGH-COMPLEXITY COMPUTE PLATFORMS — high-speed, high-power, high-density boards for datacenter and AI hardware (CPUs, ASICs, SoCs, FPGAs), power delivery into the hundreds of amps, and silicon validation. ▸ PRECISION MEASUREMENT & TELEMETRY — trustworthy measurement chains from nanovolts to volts, modeled, calibrated, and lab-validated. ──────────────────────────────────── SPECIALTY 1 — HIGH-COMPLEXITY COMPUTE PLATFORMS The hardest class of digital hardware: high-speed, high-power, high-layer-count, high-density boards with thousands of components. • Full-board ownership around CPUs, ASICs, SoCs, FPGAs, and MCUs — architecture, schematic, layout, and bring-up • High-speed interfaces under real signal-integrity constraints: PCIe Gen4, DDR3L, LPDDR5, DRAM, ONFI/NAND, eMMC/SD, USB, HDMI, I2C, SPI, I3C, and custom buses • Up to 24-layer stackups owned end to end — signal integrity, power integrity, and DFM/DFA locked before release, so you don't burn a fab cycle and weeks of schedule on a respin. • Power Electronics — multiphase VRMs up to 12 phases and 360 A, and the board/package PDN around them, kept within spec at hundreds of amps: model extraction, PDN/PI simulation, regulator tuning, and validation against target-impedance and transient budgets. • SSD validation platforms exposing the controller, NAND/Optane media, rails, and PCIe — custom sockets, breakout/pathfinding, instrumentation, bring-up, debug, and firmware support. ──────────────────────────────────── SPECIALTY 2 — PRECISION MEASUREMENT & TELEMETRY Measurement you can stake a design decision on. I don't just drop in an ADC and hope for the best. I architect the entire measurement chain, model it, extract and ingest models, and design the calibration and validation so the numbers on the screen actually mean something. • Architected and led teams to build TWO mixed-signal measurement platforms (precision analog front ends + FPGAs) delivering accurate power and temperature telemetry for storage and memory devices • Front ends spanning nanovolts to volts and milliamps to hundreds of amps — architected, modeled, and lab-correlated so the reading is one you can defend in a design review, not one you have to take on faith. • Precision AFEs (INA / op-amp), ADCs, voltage references; temperature sensing via thermistors, RTDs, and BJTs; TEC control • Modeling and validation: SPICE, MATLAB/Simulink, Python — model extraction, lab correlation, Bode, load-step, calibration ──────────────────────────────────── Start small if you want to: send me your specs or invite me to your job and I'll give you an honest read on scope, risk, and whether I'm the right fit — that first conversation is on me. Need a deeper answer before you commit? I also offer paid scoping consultations — a written risk and architecture assessment you can act on. Either way, you'll know exactly where you stand before any real work begins.

I am an expert in KiCad and Eagle. I am experienced RF Electrical Engineer. The schematics and layouts are my strong points. I will update the library both schematic and layout and generate the Gerber files. Maintain design rules of PCB broads including track widths, vias, via drills, maintain clearance, pear gaps for main manufacturers. Also, I will recommend suggestions for manufacturers.

I help companies turn ideas and electronics designs into fully working and reliable devices. I am a Hardware and Firmware Engineer with 10+ years of experience developing real products, with hardware designed for 70+ successful projects, many of which are currently on the market. Unlike many freelancers who stop at schematic and PCB design, I support projects through board bring-up, firmware integration, and system debugging in a hardware lab, ensuring the device actually works and meets the expected specifications. I also work directly with PCB manufacturers and assembly partners, helping clients avoid production issues and ensuring designs move smoothly from prototype to manufacturing. My approach focuses on building functional systems, validating them through testing, and identifying issues early before they become expensive problems in production. Two client Products I Have Developed: ✅ Smart home devices ✅ Corrosion monitoring sensors ✅ Drone and boat controllers ✅ Gimbal control systems ✅ BLDC motor controller for medical beds ✅ Muscle stimulators ✅ Medical scales ✅ Smart irrigation and weather monitoring systems ✅ Smart camera systems What I Deliver: ✅ Hardware architecture and PCB design ✅ Embedded firmware development ✅ Functional PCB prototypes ready for testing ✅ Board bring-up and hardware validation ✅ Hardware debugging and troubleshooting ✅ Reliability design reviews (ESD protection, thermal stability, power integrity, signal integrity, EMC, UL, CE) Typical Projects I Help With: ✅ Bringing up new PCB prototypes ✅ Debugging boards that are not working or unstable ✅ Hardware and firmware integration ✅ Reviewing schematics and PCB layouts before manufacturing ✅ Reliability audits to improve product lifetime ✅ Fixing power stability, ESD protection, and thermal issues During my career, I have used various technologies and components. Below are some of them: ⭐RF modules: LORA, WIFI, BLE, GPS, GSM, LTE, ZIGBEE, NRF52840, ESP32, SARA-R510, CC2530, CC2538, SIM9001, SIM800, Quectel, Arduino_IOT... ⭐Microcontrollers/Microprocessors: STM32 ( F and L family), ATAMEGA, ESP32, MSP430, MSP432, ATSAM, NFR52840, PIC32, PIC24, NXP, ARDUINO, IMX8... ⭐ Sensors: Temperature, humidity, O2 sensor, PH sensor, Light sensor, motion sensor, water leakage sensor, Nitrate sensor, current sensors, Voltage sensor, distance sensors, corrosion sensor, Scale sensors, accelerometers, Magnetometers, Rain sensor, Air quality sensors... If you are looking for someone who can design, bring up, and debug your hardware until it works as expected, please send me a message, and we can discuss your project.

Professional solar battery system and EV charging engineer with expertise in grid-tie and off-grid solutions. Having designed 300+ DIY off-grid and grid-tie solar systems, I help clients achieve energy independence. I provide complete solar packages for permitting, with designs passing ESA inspections. My extensive experience spans residential/commercial OCPP Level 2 and DCFC EV charging, as well as off-grid systems for boats, cottages, and camper van conversions. I bring a meticulous and responsible approach to ensure high-quality results. Specialized in the following solar and battery brands: Victron Energy, Sol-Ark, Eco-Flow, Generac, Growatt, Magnun, Outback, EG4 and Lux Power inverters, Battle Born batteries, SOK, EPEver and many other solar power electronic devices (MPPT charge controllers, management and monitoring systems) . Specialized in the following EV charging brands/systems: Jointech, Zerova, Liteon, Delta, LG, Siemens, Autel, EVbox, Tritium DCFC, BTC Power, Efacec and many other OCPP-related EV charging systems.

An experienced, self-motivated software and electronics developer with a proven record of producing successful and reliable products. Widely traveled with plenty of customer-facing experience. Specialties: Embedded programming in C, C++ and Assembler (30+ yrs). PC Programming in C, C++, Delphi, VB, SQL (25+ yrs) Mobile device programming in Java (Android Studio), B4A (7 yrs) (Anywhere Systems) and C++ (AppMethod) Electronic Design & Troubleshooting (30+ yrs). PCB Design Customer liaison (both Technical and Sales support) Full Member, IEEE Technologies: STM32 (ARM), PIC, PSoC, Atmel, Silabs, Arduino, ESP32, BLE, Bluetooth, Iridium, GSM, LoRa, NFC, IMU, DSP, Modems, MEMS, Vending Machines, Card Readers, Coin and Note Acceptors. Low Power (battery) Programming Bare Metal and RTOS. Use of IAR, STM32, Silabs, Atollic, Keil, Atmel, Arduino toolchains.