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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.

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.

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'm an Embedded and Hardware Engineer with over 10 years of experience, specializing in taking projects from scratch to fully functional prototype PCB development. I handle all aspects, including circuit design, coding, component selection, PCB layout, and prototyping. Skills: Embedded Systems: ESP32, STM32, Microchip, NXP PCB Design: Altium, Eagle, Proteus Circuit Simulator Programming: Python, C, MySQL, C++ Circuit Design: IoT Devices IoT Network Routers Buck-Boost Converters Microcontrollers DC-DC Converters Protection Circuits Battery Chargers Others Communication Protocols: RS232, RS485, I2C, SPI Wireless Technologies: XBee, ESP32 Linux Hardware: Raspberry Pi, GL-iNet, Hi-Link Linux OS: OpenWrt, Ubuntu Languages: Portuguese, English, French Expertise: Electronics PCB Troubleshooting

I'm a results-driven full-stack software engineer with over 9 years of hands-on experience building web platforms, REST APIs, embedded systems, and industrial IoT solutions. Whether you need a robust Laravel backend, a reactive Vue.js frontend, or a complex third-party API integration — I deliver clean, maintainable code that scales. ━━━━━━━━━━━━━━━━━━━━ 🔧 WHAT I DO BEST ━━━━━━━━━━━━━━━━━━━━ ✅ Full-Stack Web Development End-to-end development using Laravel, Vue.js, React.js, and Node.js. I architect clean MVC systems, design REST APIs, and build pixel-perfect frontends with TailwindCSS and Bootstrap. ✅ Legacy System Modernization Expert at migrating legacy codebases — from PHP 5 → PHP 8 and Laravel 6 → Laravel 11 — resolving compatibility issues, improving performance, and future-proofing your architecture. ✅ API & Third-Party Integrations Deep experience integrating: Facebook, Instagram, TikTok, YouTube, Twitter, Salesforce, DocuSign, OpenAI, Gemini, Paytm, Klaviyo, Snowplow, EmailOctopus, Google APIs, and more. ✅ Automation & Workflow Optimization I build smart automation workflows — scheduled content pipelines, cron jobs, analytics tracking, and campaign management tools that run reliably without manual intervention. ✅ Embedded Linux & Industrial IoT Unique background developing embedded PHP applications on Linux-based hardware (Khadas, BeagleBone) for fuel station monitoring systems deployed at scale across multiple sites. ━━━━━━━━━━━━━━━━━━━━ 💼 RECENT HIGHLIGHTS ━━━━━━━━━━━━━━━━━━━━ ▸ Built a full-stack nonprofit campaign platform (Laravel + Vue.js) with social media automation across Facebook, Instagram, TikTok, YouTube, and Twitter. ▸ Led Laravel 6 → 11 migration using Laravel Shift, modernizing architecture while maintaining backward compatibility. ▸ Enhanced an Ad Grant automation tool using Laravel + Node.js web scraping services. ▸ Developed a centralized monitoring dashboard for distributed fuel stations deployed nationwide. ▸ Built an employee activity monitoring desktop app using ElectronJS + Node.js + ReactJS with screenshot capture and real-time dashboards. ▸ Integrated DocuSign API for digital document signing workflows on a Core PHP CMS platform. ━━━━━━━━━━━━━━━━━━━━ 🛠️ TECH STACK ━━━━━━━━━━━━━━━━━━━━ Backend: PHP, Laravel, Node.js (Express.js), C#, ASP.NET Frontend: Vue.js, React.js, JavaScript, jQuery, HTML5, CSS3, TailwindCSS, Bootstrap Databases: MySQL, SQLite DevOps: Git, Postman, Swagger, AWS (working knowledge), Ubuntu, Windows APIs: OpenAI, Gemini, Salesforce, DocuSign, Payment Gateways, Social Media APIs Tools: VS Code, Visual Studio, Asana, Monday, Active Collab, Shopify ecosystem ━━━━━━━━━━━━━━━━━━━━ 🎓 BACKGROUND ━━━━━━━━━━━━━━━━━━━━ Bachelor of Engineering in Electronics & Communications — Gujarat Technological University This engineering foundation gives me a unique edge in full-stack + IoT/embedded system work. ━━━━━━━━━━━━━━━━━━━━ I take ownership of projects end-to-end, communicate proactively, and write code I'm proud to put my name on. If you're looking for a reliable engineer who hits the ground running — let's talk.

I specialize in automation for systems where quality depends on backend correctness, integrations, and data consistency. I have hands-on experience building API automation for large sets of endpoints, with clear pass/fail results and coverage reporting to support release decisions. Key areas of experience: - API automation for complex backend systems - Integration and provisioning testing - Automation of migration result verification - Automated testing of payment workflows - Database validation through automated tests I prefer automation that: - validates real business logic - catches regressions early - scales as the system grows My goal is to help teams move faster without losing confidence in system stability.