Mohamed M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Senior hardware and product engineer with 8+ years taking embedded and electromechanical products from concept to certified, high-volume production. Recent work includes a national identity-verification card reader (several thousand units deployed, fully RF/EMC/safety certified with UAE TDRA approval), solar-powered ANPR parking units running in the hundreds, and a vision + GNSS inspection system built onto 50+ vehicles. I can own a product end to end, or step in on the parts that usually hold projects back: RF and NFC design, power systems, board bring-up, and certification. What I can help you with: Schematic capture and 2–6 layer PCB design (Altium Designer, KiCad, EasyEDA, Eagle, Circuit Studio), ready for manufacture NFC/RFID design (ISO 14443 A/B, ISO 7816 smart card), including custom 13.56 MHz antennas and ST25 front ends Low-power IoT devices on LTE-M/NB-IoT, 4G, LoRaWAN, BLE and GNSS Firmware in C for bring-up, sensor validation and base firmware, and working with firmware teams on FreeRTOS and Zephyr products Power design: DC-DC, LDOs, Li-ion/LiPo/LiFePO4 packs and protection, solar harvesting, energy budgets, and vehicle electrical integration Edge-AI and camera systems, including ANPR and multi-camera vehicle platforms Certification support: CE, ETSI RF, EMC (EN 55032/55035, EN 301 489), LVD/safety (EN 62368-1), and UAE TDRA type approval Enclosure design direction, design-for-manufacture, component sourcing and supplier selection Platforms: Nordic nRF91/nRF52, STM32 (L1/L4), ESP32, PIC18, ATmega, TI CC2640 Interfaces: UART, SPI, I2C, CAN, RS-232/422/485, USB 2.0, MQTT How I work: I've led multidisciplinary teams across firmware, mechanical, industrial design and software, so I design for the whole product, not just the board. You get clear documentation, early warnings about risk, and designs that account for certification and production cost from day one. If you need a board designed, a prototype turned into a product, or a device that has to pass certification, send me a message. I'm happy to talk through your project before you commit to anything.