I received a PhD degree in applied mathematics and signal processing from Télécom SudParis, France, in December 2017. I'm currently an Associate Professor at École Nationale Supérieure des Télécommunications et des TIC (ENSTTIC) in Algeria. My research interests focus on signal processing for communications and radio monitoring. I have extensive experience using MATLAB/Simulink, Software Defined Radio (SDR) platforms, and Vector Signal Analysis software VSA 89600.

Being a professional Electrical Engineer I am here to provide my expert services to help you in following fields. #STM32 RDP1 Exploitation & Firmware Extraction • STM32 RDP1 Unlocking & Firmware Dumping – Extract firmware from locked STM32 microcontrollers. • Reverse Engineering & Code Recovery – Recover lost or inaccessible firmware. • Security Analysis & Testing – Identify vulnerabilities in STM32 protection mechanisms. • Technical Consultation – Advice on embedded security and protection strategies. • Supported STM32 Series: STM32F0, STM32F1, STM32F2, STM32F3, STM32F4, STM32F7, STM32G0, STM32G4, STM32H7, and more. # System Analysis and Design Languages (Embedded System): I have been working in the field of Embedded system by using many professional tools. Embedded C programming for micro-controllers like: • STM32 based Arm cortex projects. • ESP32 based projects. • Software define radios(SDRs) based projects. • Arduino based programming for embedded system. • Verilog/VHDL for FPGA digital design. • 8051 Micro controllers • PIC Micro controller • System Verilog for digital design and verification. • MSP430 Micro controllers • NRF Series - Nordic Semiconductor • LoRa WAN communication modules • Simulink designs • PCB design and schematic validation using Altium Designer, KiCad, OrCAD, DipTrace # Software design languages: • C/C++ for simulation / functional validation. • Embedded C for microcontroller • Python • MATLAB • Verilog and VHDL # Article/Technical Content Writing I can provide guidance and help you as per your requirements in all areas of writing including blog writing, content writing, technical writing, Article writing. I can provide guidance and give you my mentoring and tutoring services as per your requirements in all areas of writing including • Blog writing • Content writing • technical writing • Article writing.

I am Dr. Muhammad Ayaz, a PhD in Electrical Engineering, IEEE Professional Member, and Top-Rated Plus freelancer with 10+ years of experience in RF, microwave, antenna, and PCB design. I specialize in designing high-performance antenna systems, RF/microwave circuits, and advanced PCB layouts for modern wireless and communication applications. I help clients transform concepts into manufacturable and prototype-ready hardware using advanced electromagnetic simulation, RF optimization, and high-speed PCB design techniques. ⭐ Core Expertise ✅ Antenna Design & Optimization 🔹 Microstrip patch, monopole, dipole, slot & PIFA antennas 🔹 Helical, horn, dielectric resonator (DRA) & reflector antennas 🔹 Vivaldi, Yagi-Uda, loop & fractal antennas 🔹 Single-element and antenna array designs 🔹 Linear, circular, phased & beamforming arrays 🔹 MIMO, dual-polarized & compact antennas 🔹 5G/6G, mmWave, UWB & wideband antennas 🔹 Planar, conformal & wearable antenna structures 🔹 Gain, bandwidth & impedance matching optimization 🔹 RF performance enhancement and antenna miniaturization ✅ RF & Microwave Engineering 🔹 RF front-end and microwave circuit design 🔹 Filters, couplers, power dividers & matching networks 🔹 RF system integration & optimization 🔹 Signal integrity and RF performance analysis 🔹 Microwave passive component design ✅ PCB Design & Fabrication 🔹 RF & high-speed PCB layout (1–10 layers) 🔹 Controlled impedance routing 🔹 EMI/EMC-aware PCB design 🔹 Compact and manufacturable PCB layouts 🔹 PCB fabrication support and prototype development 🔹 Altium Designer, KiCad & OrCAD PCB development ✅ Simulation & Engineering Tools 🔹 CST Microwave Studio Suite 🔹 HFSS (High Frequency Structure Simulator) 🔹 ADS (Advanced Design System) 🔹 AWR Microwave Office 🔹 Altium Designer, KiCad & OrCAD 🔹 MATLAB, LTSpice, PSpice & Multisim ✅ Antenna Testing & Validation 🔹 Fully calibrated anechoic chamber facility 🔹 Vector Network Analyzer (VNA) based RF measurements 🔹 Antenna testing and performance validation 🔹 S-parameters (S11), VSWR & radiation pattern measurements 🔹 RF tuning, debugging & optimization 🔹 Prototype bring-up and hardware verification ⭐ Why Clients Choose Me? 🔹 PhD specialist in RF, microwave, antenna & PCB systems 🔹 Strong research and industry experience 🔹 Proven success as a TOP-RATED PLUS freelancer 🔹 Real hardware prototyping and testing capabilities 🔹 Focus on performance, reliability & manufacturability 🔹 Professional communication and on-time delivery 🔹 End-to-end support from concept to prototype and testing ⭐ Project Types 🔹 Antenna design & optimization 🔹 RF/microwave circuits & systems 🔹 Antenna arrays & beamforming systems 🔹 RF PCB layout & high-speed PCB design 🔹 PCB fabrication and prototype support 🔹 Antenna measurement & RF testing 🔹 Integrated RF + PCB solutions If you need a senior engineer in RF, microwave, antenna, and PCB design who understands both theory and real-world implementation, including fabrication and testing support, let’s discuss your project. ⭐ Budget & Ordering Available for both fixed-price and hourly projects ($50/hour). Contact me today to discuss your project requirements. Best Regards, Dr. Muhammad Ayaz PhD | Senior RF, Microwave, Antenna & PCB Design Engineer

I am a Computer Science Ph.D. graduate from the University of California, Riverside. I have extensive experience: - Designing novel graph based Unsupervised Machine Learning methods and on the relevant research literature. - As a Teaching Assistant in both graduate and undergraduate university Machine Learning courses. - Designing software in MATLAB. - Creating high quality technical reports in LaTeX. - Navigating the Linux ecosystem and in bash scripting. I will be able to assist you with tasks such as: - Getting a deeper and clearer understanding of various Data Science and Machine Learning concepts. - Research projects involving Machine Learning, and particularly graphs and Mathematical Optimization. - Non-research Data Science tasks like data scraping, data visualization, MATLAB scripting etc. If you think my skills align with your task at hand, feel free to reach out and I will be happy to discuss with you potential solutions I can provide :)

I am an Electronics Engineer specializing in EMBEDDED SYSTEMS, Firmware Development, and TECHNICAL WRITING. My technical expertise includes: • Embedded Firmware Development (C/C++) • Sensor Interfacing and Data Acquisition • FPGA Development (Verilog) • MATLAB Analysis and Visualization • Power Electronics and Power Sequencing • Hardware Design and PCB Bring Up • Control System Design & Implementation In addition to engineering services, I provide SEO technical writing support for blogs, articles, reports, documentation, and engineering research. My engineering background enables me to comprehend complex technical topics and convey them effectively to both technical and non-technical audiences. I have written numerous articles and case studies in the field of electronics. Please visit my profile & portfolio for more information. I am committed to delivering high-quality work and practical solutions that help clients achieve their project goals. Let's discuss how I can help with your project.

I help building owners, developers, and design teams close the gap between how a building is modeled and how it actually performs — combining building energy modeling with mechanical (MEP) design to reduce energy use, operating costs, and carbon impact. Most freelancers do either the energy model or the mechanical design. I do both, which means the two actually align — and you don't need to coordinate between two separate hires. Why clients work with me: • Integrated energy modeling + MEP design under one roof • Code-fluent across ASHRAE 90.1, NECB, Title 24, IECC, BREEAM, and Passive House • Data-driven, fully documented, on-time deliverables 🖥 Energy Modeling & Sustainability EnergyPlus, DesignBuilder, IESVE, PVsyst · ASHRAE 90.1 / Title 24 / NECB / IECC compliance · energy audits (ASHRAE 211, ENERGY STAR) · 179D support · daylight, thermal comfort & PV feasibility studies 🏢 Mechanical (MEP) Design HVAC system design (VRF, AHU, chillers, boilers, heat pumps) · heating & cooling load calculations · plumbing, fire protection & gas systems · full Revit MEP modeling with clash detection · equipment selection, BOQ & specs 🏊 Specialized: Pool & High-Humidity Spaces Hydraulic design, equipment sizing, and HVAC for pool halls and spas 📊 Engineering Analysis & Automation FEM & CFD simulation · MATLAB modeling · Python automation for engineering workflows 📩 Let's bring your high-performance building vision to life — message me to discuss your project.

Hi, I’m Ibrahim, a PhD holder in Wireless Communication & Networks with 6+ years of experience in Signal Processing, MATLAB, Mathematics, LaTeX, and STEM research support. I specialize in: • Signal Processing: FFT, filtering, denoising, wavelet analysis, time-frequency analysis, noise reduction, UWB-based indoor localization • Wireless Communications: MIMO, UWB, modulation, channel coding, source coding • Computer Networks & IoT: TCP/IP, OSI, routing, LAN/WAN, Arduino, ESP32, DWM1000 localization • MATLAB Development & Simulations for engineering and research projects • LaTeX & TikZ: thesis formatting, research papers, Beamer presentations, complex equations, scientific graphics, IEEE/ACM/APA formatting I focus on clear communication, high-quality results, and on-time delivery with full confidentiality. Let’s collaborate on your MATLAB, Signal Processing, Networking, Mathematics, or LaTeX project.

Dear, My name is Mohamed Elgendy, I’m an Aeronautical Egyptian Engineer I am a passionate Aerospace Design and Researcher Engineer who loves working in all the subjects involved in this field. I can provide good quality assistance supporting it with programs such as SolidWorks, ANSYS, MATLAB, and AutoCAD.A clear understanding of technical Aircraft and systems and training in maintenance Engineering. *Education: 1_ Master's degree, SAMARA STATE AEROSPACE UNIVERSITY, Russia 2022.Excellent 2_AERONAUTICAL ENGINEERING CAIRO UNIVERSITY( IAET). (2020) Bachelor's degree.Excellent 2_ Moscow Aviation Institute (MAI) (2016-2018) Diploma 3_Aircraft maintenance engineering Egyptair training experience (2019-2021) 4_UAV airplanes, drones projects (4 years) I firmly believe that my education, skill-set, and intensive training make me a suitable candidate for this area, so I feel that I am the best fit for any work related to the Aerospace and Mechanical Engineering field. I have experience in: ✅ Researcher And academician ✅ Aircraft maintenance ✅ Renewable Energy ✅Heat and Mass Transfer ✅Thermodynamics ✅ Thermal Machines ✅ Fluid Mechanics ✅ Turbomachinery ✅ Mechanical Vibrations ✅Mechanical Design ✅Finite Element Analysis - FEA ✅ Numerical Methods ✅2D and 3D CAD Modelling ✅Computational Fluids Dynamics - CFD ✅Ansys modeling and simulations (CFD, Thermal, Structural) ✅SolidWorks modeling and simulations ✅ MATLAB ✅UAV & Drone Design Computer skills: • good user of Microsoft office. • Microsoft PowerPoint &word 2010 language skills: • Arabic: native tongue •English: advanced in written and spoken( Advanced degree ILETS 7.5) •French: fluently (Advanced degree High School certificate). •Russian: proficient Administrative& Interpersonal skills: *Hard work and good public relations & communication skills. *Ability to work as a part of a team or individually. *Ability to learn(fast learner ) and work under stress. * Good communication skills, good analytic skills, convincing and influencing, self-Driven, good in prioritizing and Solving problems. I look forward to working with you. Thank you!

Mechanical Engineer | CFD · FEA · CAD | 2× USPTO Patents | Top Rated Plus Overview: Mechanical engineer specialising in CFD, FEA, and thermal systems, with two granted USPTO patents in cooling technology (US 12,452,991 · US 12,453,048). I design and validate heat exchangers, HVAC systems, centrifugal fans, and refrigerant loops in OpenFOAM, ANSYS Fluent, SimScale, and SolidWorks Flow Simulation. Top Rated Plus on Upwork , 85+ contracts, 3,000+ hours, $275K+ earned. Based in Cape Town, South Africa. Former CTO of a product development company. I don't ship black-box "trust me" reports. Every deliverable carries the mesh, Y+ verification, residual history, and flow-uniformity evidence behind the numbers. Results your team can defend in a design review. And because I've built a Python+OpenFOAM automation pipeline, I run parametric sweeps hand-meshing freelancers can't: on Heat exchanger contracts(2026), a 224,000-point overnight sweep on a centrifugal heat exchanger surfaced a geometry that more than doubled system COP. Core Services CFD: heat exchangers, HVAC, centrifugal fans, ducts, refrigerant loops; conjugate heat transfer, natural convection, multiphase flow with species transport, turbulence modelling (k-ω SST, realizable k-ε, LES where warranted). FEA / Structural: stress, fatigue life, vibration, drop/impact testing, nonlinear and topology optimisation, composites (CalculiX, ANSYS Mechanical). Acoustic / NVH: noise prediction and NVH analysis. CAD & Documentation: SOLIDWORKS parametric modelling, assemblies, sheet metal, weldments, surface modelling, photorealistic rendering, and manufacturing-ready technical drawings. Software: OpenFOAM, ANSYS Fluent, ANSYS Mechanical, SimScale, STAR-CCM+, COMSOL Multiphysics, SolidWorks (CAD + Flow Simulation), CalculiX, Gmsh, AutoCAD, Fusion 360, MATLAB, Python. Selected Work: Heat exchanger (2026) — 224k-point automated CFD sweep on a centrifugal heat exchanger; found a geometry that >2× system COP. Brine–CO₂ corrosion modelling, oil-field pipework (2025–26, active) — multiphase CFD with species transport. USC approved Valve (2025) — backflow-preventer pressure-loss validation to AWWA C510 across six configurations. EvansWerks (2023–26) — 32-month principal-engineer engagement for Product development Patented airless tyre (2026) — coupled FEA + thermal feasibility on an adaptive airless tyre (CalculiX + Gmsh). toronto university wind tunnel (2025) — contraction-section CFD achieving <1% velocity-profile RMS in the working section. Credentials: Mechanical Engineering, advanced simulation focus (in progress) · BSc.Eng (Hons) Mechanical Engineering, UKZN · Aerospace Systems Research Group affiliate since 2019 · 2× granted USPTO patents in cooling-system technology. Industries: Aerospace, Automotive, Energy, Manufacturing, Medical Devices, Consumer Products, HVAC, Electronics Cooling. Working With Me: Send a brief or job link → scope, a fixed or hourly quote, and a stated turnaround within one business day. Every project ships with validated mesh, residual + Y+ + flow-uniformity plots, side-by-side configuration comparison, and a one-page executive summary. Regular updates throughout, designs optimized for manufacturability. Overlap with US, EU, and APAC business hours.

As a Top-rated Upwork freelancer and experienced Hardware Engineer, I thrive on designing and developing complete electronic systems that solve real-world engineering challenges. My work blends deep technical expertise in PCB design, RF engineering, and embedded systems with a strong focus on building production-ready, reliable, and scalable hardware products. Over the years, I’ve worked across the full hardware development cycle — from concept, schematic design, and PCB layout to firmware development, prototyping, RF optimization, and manufacturing support. I enjoy turning complex ideas into functional, manufacturable electronic systems that perform reliably in real environments. Here's a snapshot of the domains I've mastered: Hardware Specialties 💻🔌 ✅ Embedded Systems Development: Expert in designing embedded solutions using ESP32, STM32, PIC, Arduino, and Raspberry Pi (including CM4/CM5 platforms). I handle everything from low-level firmware (C/C++) to hardware integration, real-time control systems, and IoT-enabled devices. ✅ PCB Design & Hardware Engineering: Advanced experience in schematic design, multilayer PCB layout (2–16 layers), high-speed routing, power distribution, signal integrity, and EMI/EMC-aware design. I focus on turning circuits into robust, production-ready boards. ✅ RF & Microwave Engineering: Specialized in RF circuit design, antenna development, and electromagnetic simulation using CST, HFSS, ADS, and 4NEC2. My work includes LoRa, GPS, RFID, wireless communication systems, and RF optimization for real-world performance. ✅ Wireless & IoT Systems: Designing connected systems using Bluetooth, WiFi, LoRa, and custom RF protocols. I develop IoT devices for automation, monitoring, sensing, and smart control applications. ✅ Sensor & Embedded Integration: Experience with MEMS/IMU, GPS modules, RFID systems, displays, motor drivers, and industrial sensors for data acquisition and intelligent control systems. Design Tools 🧰 Altium Designer | KiCad | EasyEDA | CST Studio Suite | HFSS | ADS | MATLAB & Simulink | LTspice | NI Multisim | Proteus | 4NEC2 Project Experience 🚀 ✔ Raspberry Pi CM4/CM5 Carrier Board Development ✔ High-speed Multilayer PCB Design for complex systems ✔ ESP32, STM32 & Arduino-based embedded products ✔ RF & Antenna Design for LoRa, GPS, and RFID systems ✔ IoT & Wireless Communication Devices ✔ Motor Control & Automation Systems ✔ Power Electronics & DC-DC Converter Designs ✔ Custom Sensor-based Data Acquisition Systems ✔ Smart Home & Industrial Automation Solutions ✔ Prototype development to manufacturing-ready hardware My approach is centered around engineering precision, manufacturability, and system-level reliability. Whether it’s a small embedded controller or a complex RF-enabled multi-layer system, I ensure every design is optimized for performance, stability, and real-world deployment. I also support full product development — from initial architecture and schematic design to firmware, debugging, testing, and production assistance. I’m always excited to collaborate on innovative hardware ideas and help transform concepts into fully functional electronic products ready for manufacturing and deployment. Tags: Electrical Engineer, Electronics, Hardware Design, PCB Design, PCB Layout, RF Engineering, Antenna Design, Embedded Systems, Firmware Development, ESP32, STM32, Arduino, Raspberry Pi, IoT, Signal Integrity, EMC Design, High-Speed PCB, LoRa, GPS, RFID, Microwave Engineering, Altium Designer, KiCad, CST, HFSS, ADS, Power Electronics, Automation Systems, C, C++, Embedded C, RTOS, Wireless Communication, Prototyping, Manufacturing Support. Warm Regards, Muhammad Waleed