RF/Microwave Engineer | Power Amplifier Designer | ADS & Electromagnetic Simulation Expert I am a Ph.D.-trained RF and Microwave Engineer with over 8 years of experience in wireless communications, power amplifier design, electromagnetic simulation, and advanced RF system development. My expertise spans RF, microwave, and mmWave technologies, with a strong background in both industrial R&D and academic research. I have designed and optimized high-efficiency power amplifiers, Doherty amplifiers, LNAs, filters, couplers, oscillators, and antenna systems for commercial wireless applications. I am highly proficient with Keysight ADS, EMPro, SystemVue, MATLAB, and Python-based automation workflows. My experience includes: • RF and microwave circuit design and optimization • Power amplifier design (Class AB, Doherty, Class C) • Load-pull analysis and nonlinear device modeling • EM simulation and RF layout design • Antenna and passive component design • Measurement and characterization using VNAs and RF test equipment • Python and MATLAB automation for RF workflows • Technical writing, research publications, and engineering reports I have authored numerous IEEE publications with hundreds of citations and have successfully delivered projects for industry-leading telecommunications and semiconductor organizations. Whether you need RF design support, simulation expertise, measurement analysis, or technical consulting, I can help transform your requirements into practical, high-performance solutions.

I specialize in applying machine learning and deep learning to complex signal-processing and wireless-sensing challenges. With over 7 years of research and technical experience, I have a strong foundation in programming languages such as Python, C/C++, and MATLAB. Recently, I developed and deployed a self-hosted WhatsApp-integrated AI agent using OpenAI Codex on a Dockerized VPS, demonstrating my capabilities in LLM-agent engineering. My background includes a blend of technical evaluation, teaching, and curriculum design at the university level, equipping me to author insightful project problems and assess model outputs effectively. I thrive on turning innovative ideas into practical applications and enjoy tackling unique challenges that push the boundaries of technology. If your project requires deep expertise in electrical engineering or machine learning, I look forward to collaborating with you to achieve exceptional results.

QUALIFICATION SUMMARY Passionate about Software and programming hoping to advance in the Software Engineering Industry or related. I possess an exceptional aptitude for rapid skill acquisition, demonstrating a remarkable ability to quickly grasp and assimilate new knowledge and techniques. KEY SKILLS * Software Development (C/C++, C#, Python, * Linux (Ubuntu, Debian, CentOS, etc.) * RF and Wireless technology Unit testing) * Version Control (Git, Bitbucket, Jenkins) * Embedded Systems (Arduino, Raspberry pi, * Internet Protocol Suite (TCP/IP) NRF microcontrollers) * DevOps (Google Cloud, AWS, Terraform * QT-Framework * Bluetooth Low Energy CI/CD - pipelines, Docker, Kubernetes, * SQL Ansible).

PhD-trained engineer bridging DSP algorithms and silicon implementation, with 11+ years spanning wireless/optical communications systems, FPGA prototyping, and ASIC design and verification. Translated high-speed DSP algorithms (sigma-delta modulation, massive MIMO) from MATLAB specification to FPGA and ASIC, achieving real-time 100 GS/s — a world record at publication time. 6 successful tapeouts (28nm & 90nm), 6 first-author SCI publications, 1 US patent. Expert in Synopsys and Cadence EDA flows. Belgian citizen based in Ghent. Fluent in English, Dutch and Chinese. I offer freelance services in: - FPGA design & DSP implementation (Xilinx/AMD, SystemVerilog, VHDL, MATLAB or C-to-RTL) - Digital IC design (SystemVerilog, Verilog, RTL, Synthesis, Linting, LEC etc.) - Digital IC verification (UVM full flow, Regmap, regression and coverage, Cadence Xcelium/IMC, Synopsys VCS/Verdi) - Algorithm-to-hardware implementation (sigma-delta, MIMO, high-speed filters (FIR, IIR), equalization etc.)

Electrical engineer with an MS from Columbia University and hands-on professional experience designing sensor hardware from the ground up. Currently working as a Hardware Engineer at a sensor technology company, where I manage the full PCB design cycle — from schematic capture in KiCad and Altium through layout, component selection, routing, bring-up, and validation.

I’m an Data Analyst who helps businesses organise data, create clear reports, and save time through simple automation. I work with Excel, SQL, and Power BI to clean data, build dashboards, and create accurate reports that are easy to understand. I enjoy working with messy or unstructured data and turning it into meaningful insights. I’m organised, reliable, and quick to learn new tools or processes. I communicate clearly and always meet deadlines. What I can help you with: -- Excel data cleaning, formulas, and reporting -- SQL queries and data analysis -- Power BI dashboards and visual reports I’m committed to delivering high-quality work and building long-term working relationships. If you’re looking for someone dependable who pays attention to detail, I’d be happy to support your project.

I’ve had the pleasure of working in firmware and electronics for over 10 years, working on a huge range of emerging technologies. Below is a summary of some of the technologies I’ve worked with. Microcontroller, Microprocessors and SOC firmware + EE design - STM32 Arm Cortex and STM8 value and high performance lines, STM8S up to STM32F7. - Texas Instruments Sitara ARM based processors. - AVR Microchip micro controllers from ATtiny to ATMega. - NXP Arm-based processors I.MX RT, I.MX8 processors. - Google Coral TPU hardware. Motor Drive and Robotics - Brushless DC and PMSM motor drive hardware design, six-step and FOC drives. - Brushed DC motor drives. - Stepper motor drives. - Variable frequency drives. - High voltage three-phase induction motor drives using IGBTs. - Encoders (ABN, BiSS), hall sensors and resolvers. - Dissipative and regenerative braking systems, integrated with battery charging. - Solenoid and voice coil actuator hardware. Power Electronics - Lithium-ion battery management systems, including CC-CV charging, balancing, thermal management, cell health monitoring, thermal monitoring and protection. - Solar cell energy harvesting using MPPT hardware. - Bridge rectifier AC to DC hardware. - DC to DC high current switching regulators and controllers, up to 60V, 12A output. - Linear regulator design. - PCB trace considerations for current, high voltage creep and thermal management. - LED and laser drive hardware, including high current overdrive and flashing for light beam applications. Analog Design - Audio amplification for DSP processing. - Eurorack module designs for audio synths. - Current sense circuits, including very low noise amplifiers. Sensors and Instrumentation - IMUs, accelerometers and motion sensors. - Strain gauge and Wheatstone bridge circuits for pressure and load sensing. - Capacitive touch sensing. - Temperature sensing using NTC thermistors, thermocouples and IC based solutions. - IR specialist optical sensing technology (thorlabs, hamamatsu sensors). - Omnivision CCD image sensors for wide angle automotive applications. - Infrared dot projection matrix ICs (active IR sensing) for depth applications. - Stereo disparity camera design for robotics depth sensing applications. - Distance sensing using mmWave, ultrasonic and LIDAR sensing technologies. Radio Frequency Design - RFID hardware. - Wi-Fi design including PCB line antenna and co-axial antennae. - Bluetooth and BLE. - Qi wireless charging. - ESP8 and ESP32 wireless SOCs. Industrial and Communication - Ethernet, EtherCAT, PROFINET, PROFINET. - RS485, RS422, MODBUS RTU. - IO-link. - CAN and CAN-FD. - USB3.0, USB3.1 and USB3.2 design. - SPI, I2C, I2S, UART, OWI. DFM/DFT - Prototype testing and development. - Component sourcing and supply chain design. - Cost optimisation. - Rapid prototyping, CNC, 3D Printing and injection moulding. - Mechanical integration. Design Software Proficiency Electronics - Altium - Kicad - Allegro/Cadence - Eagle Firmware - Atollic Truestudio - Yoctolinux - Verilog Mechanical - Solidworks - Fusion 360 - Creo However to me, great design means not just having deep technical skills, but also care and understanding of the product itself. Here are some of my recent testimonials… “Josh is an incredibly talented freelancer” ⭐⭐⭐⭐⭐ “Josh delivers excellent work, fast and precise” ⭐⭐⭐⭐⭐ “Josh’s timeliness, professionalism, and dedication are exemplary and I highly recommend him to anyone who is looking to implement complicated circuitry and electrical components.” ⭐⭐⭐⭐⭐ “Josh exceeded my expectations with his deep technical knowledge and professionalism. He created a medical simulator including all electronics, mechanics, and software, and delivered it on time on a limited budget!” ⭐⭐⭐⭐⭐ In short, if you’re looking for a superstar engineer to take on any hardware challenge, then I can’t wait to hear from you!

I specialize in mechatronics engineering with hands-on expertise in embedded systems, RF sensing, autonomous robotics, and rapid prototyping. Over the past two years, I have led end-to-end product development, from system architecture and hardware design to successful field deployment and large-scale operations management. My strong background in real-time development, hardware-software integration, and cross-functional team leadership sets me apart. I excel at transforming complex ideas into tangible solutions that meet client needs. If you are looking for an R&D engineer who can deliver high-quality results and drive innovation in your projects, let’s discuss how my skills can contribute to your success.

My experience, skillset and interests are centered around the applications of signal processing to diverse fields: Wireless communication, Navigation/Positioning systems, Radar sensing, Vitals signs monitoring and Hardware prototyping. In an ideal world, I would like to continue working on similar problems but am also open towards other areas (such as biomedical, computer vision, data analysis) where my skillset can be useful. I am also very familiar with LaTeX and can work with someone who needs help with their dissertation or on high quality publications.

I specialize in building innovative tech solutions at the intersection of software development, artificial intelligence, and user-centric design. My experience includes web development with Laravel and Node.js, machine learning applications using Python and YOLO, and IoT integration with ESP32. I thrive on transforming complex concepts into practical products, from devising business model canvases to developing automatic license plate recognition systems. Currently, I am honing my skills through a Machine Learning and AI Bootcamp, allowing me to continually apply new knowledge to hands-on projects. I am eager to tackle new challenges in Software Engineering, Data Science, and Product Innovation. If you're looking for a versatile developer who can deliver effective solutions, let's connect and discuss your project.