Mazen T.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.

Looking to turn your complex electronic concepts into mass-production-ready hardware that actually passes certification? I am a Hardware R&D Engineer specializing in high-density multi-layer PCB layout, power electronics, and strict EMI/EMC compliance (CISPR 11, IEC 60601-1, IEC 61000). From initial LTspice simulation to factory-ready manufacturing files, I ensure your hardware works flawlessly on the first spin. Here is the proven expertise I bring to your project: • Advanced PCB Layout & Signal Integrity: Designing up to 6-layer high-density boards (medical & industrial) with optimized grounding, shielding, and component placement for tight mechanical integration. • Power Electronics & BMS: Developing custom Li-ion Battery Management Systems (protection & charging), bi-directional DC-DC converters, and multi-motor industrial controllers. • Compliance & Remediation: Deep experience diagnosing and modifying existing hardware to resolve failures and pass strict emissions and safety standards (CISPR 11, IEC 61000 series). • Test Automation & Validation: Developing custom Python scripts (via NI-VISA) to automate laboratory test equipment (oscilloscopes, instruments) for rigorous hardware debugging and logging. • Manufacturing-Ready Delivery: Complete BOM management, component sourcing, and Design for Manufacturing (DFM) optimized for high-volume assembly (JLCPCB, PCBWay). Whether you need a cluttered schematic organized, an EMI issue fixed, or a new IIoT/Power board designed from scratch using Altium Designer or KiCad—I deliver clean, certified, production-ready results. Let’s discuss your hardware requirements. Click "Message" to get started!