I am a PhD-qualified Data Analyst with a robust background in mathematics, specializing in data-driven insights, statistical analysis, and predictive modeling. My advanced education has provided me with a deep understanding of analytical methodologies, data visualization, and problem-solving techniques that enable me to tackle complex datasets and translate them into actionable business insights. With a PhD in Applied Mathematics .I have developed a strong foundation in statistical modeling, machine learning algorithms, and advanced data analysis. I leverage these skills to help businesses optimize processes, improve decision-making, and forecast future trends. I am proficient in data cleaning, exploratory data analysis, visualization, and statistical testing, using tools like SQL, Excel, Python, and Tableau. I also have experience in providing detailed, clear reports and visualizations that are easy for stakeholders to understand and act upon. Skills: Data Analysis & Statistical Modeling Mathematical Modeling & Algorithm Development Advanced Data Visualization (Tableau, Power BI) SQL, Python, R, Excel Predictive Analytics & Machine Learning (Basic) Data Cleaning, Preprocessing & Transformation Report Writing & Dashboard Creation Data Interpretation & Insights Generation Experience: Over the course of my academic journey and professional career, I have analyzed large datasets, applied advanced statistical models, and delivered precise insights for various sectors. I have experience with both structured and unstructured data, and my strong problem-solving abilities allow me to provide well-founded recommendations that drive business success. Why Choose Me: PhD-level expertise in mathematical and statistical analysis Advanced problem-solving skills, with an emphasis on mathematical rigor Proficient in using cutting-edge tools to analyze and visualize data Clear, actionable insights that support data-driven decision-making Strong communication skills, delivering easy-to-understand reports and dashboards Let’s collaborate to unlock the full potential of your data and make informed, data-backed decisions! ⚠️𝐃𝐢𝐬𝐜𝐥𝐚𝐢𝐦𝐞𝐫: Please note that I offer tutoring, proofreading, and editing services for educational tasks that comply with Upwork's Terms and Conditions. I strictly adhere to the policy that students' assignments are 𝐒𝐓𝐑𝐈𝐂𝐓𝐋𝐘 𝐏𝐑𝐎𝐇𝐈𝐁𝐈𝐓𝐄𝐃!

I am an experienced freelancer having multi-tasking capabilities. I offer the following services. 1. Article writing, 2. Blog Writing, 3. Content writing, 4. Essay writing, 5. Technical writing, and 6. Product Reviews. Moreover, if you are an Electrical/Electronic Engineering student and need TUTOT in subjects such as: 1. Power Electronics, 2. Power Systems, 3. Communication Theory, 4. Signals & Systems, 5. Digital Signal Processing, 6. Control Systems, 7. Circuit Designing and Applications, 8. Mathematics, etc. I am also proficient in software such as 1. MATLAB, 2. Diptrace, 3. MultiSim, 4. EagleCad, 5. Pro-Engineering, 6. OpenDSS, 7. MS Office 8. Corel Draw, 9. Adobe Photoshop, 10. Filmora, etc. Now, I am also extending my services and taking work related to 1. Virtual Assistance. 2. Translation. 3. Transcription. 4. Logo Designing, 5. App Development, 6. Data Entry, 7. Animation, 8. Game Development, etc.

I have more than 12 years experience in Embedded systems design, the main field of experience is FPGA programming, using VHDL, verilog and system verilog. I also have experience with working with Xilinx ISE, Vivado, Intel Quartus, Liberos SOC and Diamond Lattice

Top 1% Upwork specialist in AI & Embedded Systems. I architect and build solutions using LLMs, CV, and C++/Qt on Nvidia Jetson. My focus is turning your ambitious vision into a reliable, high-performance product. As a Georgia Tech graduate with over 10 years of hands-on experience, including foundational work in the autonomous driving sector of German automotive industry, I partner directly with clients to solve their toughest technological challenges. I am committed to writing clean, efficient, and test-driven code, ensuring your project is built for scalability and long-term success. Here's where my expertise lies: ✅ Intelligent AI, LLM & Agentic Systems Generative AI & LLMs: I architect advanced solutions using the OpenAI API, Gemini, Llama 3, and custom models, specializing in Retrieval-Augmented Generation (RAG) for powerful, context-aware applications. Agentic AI: I build autonomous AI agents that can reason, plan, and execute complex tasks. Full-Stack ML: I manage the entire machine learning lifecycle, from data processing and model training (YOLO, TensorFlow, PyTorch) to robust deployment. ✅ High-Performance Computer Vision (CV) Algorithm Optimization: I have proven experience in optimizing state-of-the-art detection, tracking, and stereo vision algorithms for maximum performance on edge devices. OpenCV, NVIDIA Jetson & DeepStream: My expertise includes deploying real-time vision applications using the complete NVIDIA toolkit, including FFMPEG, GStreamer, TensorRT and DeepStream. ✅ Robust Embedded Systems & Software C++ & Qt Development: I craft high-performance, cross-platform applications with clean C++ and the Qt framework. Embedded Linux & Hardware: I am highly adept at developing for a wide range of platforms, including ROS, Nvidia Jetson, STM32/STM32MP1, Raspberry Pi, and BeagleBone. Protocol Specialist: I have worked on numerous communication protocols like CAN, CANFD, SomeIP, TAPI, Flexray, RSMP, BACnet, OPCUA, MQTT, TCP/IP, UDP/IP, RSTP, ONVIF and many others. When you hire me, you are partnering with a dedicated, top-rated expert who is personally invested in delivering results.

I am a full-stack Python, C++ AI/ML/ Computer vision / 3d reconstruction developer ✅ Top Rated PLUS Upwork Freelancer ✅ 15000+ hours worked ✅ 120+ Jobs Completed ✅ $300k+ earned Computer Vision and Machine learning - Computer Vision | Machine learning OpenCV,PCL,ROS,Detectron,YOLO, VTK, Intel Realsense, Zed camera, Zivid camera, NLP, Transformers - Computer Vision, Image Processing, OpenCV, OpenGL, MKL, ITK, VTK - Deep Learning, caffe, Tensor flow, Pytorch - YOLO, DETECTRON -Desktop application development using C++/Qt, Python -3d reconstruction, NLP using Matlab,R, Python, OpenCV, OpenGL,CUDA,OpenCL, MKL, ITK, VTK,PCL,ROS,R, Transformers. -Machine and Deep Learning using SVM, KNN, Neural Networks(TensorFlow, Yolo, Detection, Pytorch). -GUI development, sockets. -Stereo Vision and 3d reconstruction. SLAM and SFM algorithms implementation and improvement. -Video/Audio streaming over network using LIBVLC, FFMPEG, GSTREAMER. -Natural language processing using BERT, BART. -Development of technically complex projects and scientific articles. -Generic programming, OOP. -Complex algorithms & data structures.

Hello, I'm Mazen. I am a Hardware Engineer with a proven track record of designing reliable, compliant, and manufacturable electronic systems. I specialize in taking products from the initial concept phase straight through to production. ​What I bring to your project: ​Advanced PCB Layout: Up to 6-layer designs focusing on signal integrity and EMC optimization. ​Power Systems: Custom Battery Management Systems (BMS), bi-directional DC-DC converters, and motor control solutions. ​Embedded Solutions: STM32 and ESP32 hardware integration for IoT devices, industrial controllers, and sensor networks. ​Compliance: Deep expertise in modifying and designing hardware to pass strict EMI/EMC and safety standards. ​Prototyping & Sourcing: Complete BOM management and rapid prototyping capabilities. ​I leverage industry-standard tools like Altium Designer, LTSpice, and Python to ensure your hardware is simulated, designed, and tested to perfection. Let's connect and discuss how I can bring your hardware vision to life.

It has been around 15 YEARS for me working on mobile robots, e-VTOL UAV (drones), RF-based sensing (i.e., UWB and FMCW RADAR), IoT, and embedded systems in general. ☑In Upwork, I have helped prototype various projects on IoT and embedded systems, like: ✅ IoT Dairy Farm, ✅ IoT Breast Pump, ✅ Automatic hydroponics, ✅ Vending Machine, ✅ Mobile Robots, ✅ Biosensor ✅ Smart IoT box ✅ Smart Display (LED, LCD, addressable RGB strip) ✅ Micro/active/passive buzzers ☑I'm familiar with various hardware including: ✅ Various Arduino boards, ✅ SBCs (Raspberry Pi, Banana Pi, Latte Panda, Odroid, Onion, etc), ✅ Edge devices (Jetson Orin, Rockchip) ✅ STM32, ✅ AVR (ATMEGA, ATXMEGA), ✅ ARM Cortex, ✅ ESP32/ESP8266, ✅ Nordic nRF52 (e.g. nRF52840), CC2650 ✅ SDR/USRP, ✅ TI mmWave Radar (e.g. AWR2243, IWR6843AOP). ☑I'm fluent with various IDEs such as: ✅ ArduinoIDE, ✅PlatformIO/VSCode, ✅STM32CubeIDE, ✅Keil IDE, and programming languages like ✅C/C++, ✅Python, and ✅Matlab. ☑ My main expertise is: ✅ PCB design (high-speed, Flexible, Rigid-Flex, multi-layer) ✅ firmware programming. ☑ I'm also familiar with AWS cloud services: ✅IoT core AWS ✅S3 ✅Lambda ✅MQTT/HTTP API ✅REST API Gateway ☑ Lastly, I have done various AI/machine learning projects where I'm familiar with: ✅Keras ✅TensorFlow ✅PyTorch.

Services Offered : ------------------------- 1. CFD ------------ -Aircraft design -Aerodynamics, -Propulsion systems -Wind tunnel testing. -Vehicle aerodynamics -Engine design -Cooling systems -Fuel injection -Design of turbines -Compressors -Pumps -Fans -Data Center cooling analysis -Immersion Cooling system -Building ventilation -Air conditioning -Heating systems. -Ship design -Hull resistance -Propeller performance. -Cooling systems for electronic components and devices. -Blood flow simulation, medical device design, and drug delivery. -Meteorology and climate modeling: Weather prediction, climate change studies, and atmospheric circulation. -Oceanography: Ocean currents, wave dynamics, and coastal processes. -Environmental engineering: Pollution dispersion, water flow, and air quality. -Sports equipment: Design of sports equipment, such as golf clubs, tennis rackets, and bicycles. -Industrial processes: Chemical reactors, mixing processes, and material handling. -Entertainment industry: Special effects in movies and video games. -Research and development: Fundamental research in fluid mechanics and related field 2.FEA ---------- -Structural analysis: Stress, strain, and deformation analysis of structures (e.g., bridges, buildings, aircraft). -Component design: Analysis of components such as gears, shafts, and bearings. -Fatigue analysis: Predicting the lifespan of components under cyclic loading. -Dynamic analysis: Analyzing the behavior of structures under dynamic loads (e.g., earthquakes, vibrations). -Heat transfer: Simulating heat conduction, convection, and radiation. -Fluid flow: Analyzing fluid flow through structures (e.g., pipes, channels). -Automotive: Crash testing, vehicle dynamics, and component design. -Aerospace: Aircraft design, structural analysis, and fatigue testing. -Biomedical: Analysis of medical devices, prosthetics, and human anatomy. -Electronics: Thermal management of electronic components. -Civil engineering: Structural analysis of buildings, bridges, and dams. -Manufacturing: Process simulation, tooling design, and product development. 3. DEM ------------- -Materials processing: Mixing, blending, and handling of powders and granules. -Chemical engineering: Fluidized bed reactors, pneumatic conveying, and particle separation. -Pharmaceutical industry: Tablet manufacturing, powder blending, and encapsulation. -Mining and minerals: Ore processing, comminution, and bulk handling. -Food industry: Food processing, packaging, and storage. -Civil engineering: Soil mechanics, slope stability, and erosion control. -Environmental engineering: Waste management, sediment transport, and pollution control. -Fundamental research: Investigating the behavior of granular materials under various conditions. -Material characterization: Determining the properties of granular materials, such as particle size distribution, shape, and interparticle forces. -Process optimization: Improving the efficiency and performance of industrial processes involving granular materials. -Sports equipment: Design of sports equipment, such as golf balls and tennis balls. -Consumer products: Design of products like detergents, cosmetics, and food products. -Art and design: Creating visually appealing granular materials for artistic purposes. Electronic system Design ------------------------------- 1.Design and Development -Concept development: Turning ideas into tangible product concepts. -Hardware design: Designing circuit boards, schematics, and component selection. -Software development: Creating firmware, embedded software, and application software. -PCB layout: Designing the physical layout of printed circuit boards. -Prototyping: Creating physical prototypes for testing and validation. 2.Testing and Validation -Functional testing: Verifying that the system meets its intended functions. -Performance testing: Evaluating the system's speed, efficiency, and reliability. -Environmental testing: Assessing the system's performance under various environmental conditions. Product Design and Development ---------------------------------------- -Concept development: Turning ideas into tangible product concepts. -Product design: Creating detailed product designs, including drawings, specifications, and prototypes. (CAD design) -Engineering services: Providing engineering expertise for product development. -Machining: Cutting, shaping, and forming materials using various machines (e.g., lathes, milling machines, drilling machines). -Fabrication: Joining materials together using processes like welding, soldering, or riveting. -Assembly: Assembling components into complete products. Robot Design and Development --------------------------------------- Custom robot design: Creating tailored robotic solutions to meet specific needs. Robot prototyping: Building physical prototypes for testing and validation. Robot integration: Integrating robots into existing systems or environments.

I am a Top-Rated Plus Mechanical Engineer with over 4,000 hours and a 100% Job Success Score on Upwork, specializing in Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), and Multiphysics simulation. My expertise lies in delivering technically rigorous, high-fidelity simulations for complex engineering challenges across various physical domains using fully licensed commercial tools: Siemens Simcenter STAR-CCM+, COMSOL Multiphysics, ANSYS, and MATLAB. I bridge the gap between deep mathematical modeling and real-world application, having successfully implemented diverse projects ranging from electrohydrodynamic propulsion and CO2 electrolyzers to structural load analysis for steel joints. Beyond simulation, I provide comprehensive mechanical design services with a focus on Design for Manufacturing (DFM) and rapid prototyping. Using SOLIDWORKS, I guide clients through the entire product development lifecycle-from early-stage conceptualization and CAD design to detailed engineering for mass production. I balance theoretical performance with practical constraints such as material selection, CNC machining, and injection molding to optimize for assembly efficiency and cost. A core strength of my process is linking high-level simulation with strategic decision-making by developing customized, automated workflows. I often integrate MATLAB with COMSOL via LiveLink to perform sensitivity analyses and reduce design uncertainty, accelerating overall development timelines. Whether you are refining a thermally managed enclosure or designing a specialized medical component like an anti-siphon valve, I am committed to delivering precision-engineered solutions that transform concepts into high-quality, real-world products.

Luka Knežević – Hardware Engineer & PCB Designer I am a highly experienced Hardware Developer and PCB Designer with over 5 years of professional engineering experience and more than 50 successfully completed projects ranging from low-power embedded systems to multi-kilowatt power electronics. My background spans high-performance LED drivers, motor control, energy systems, wearable devices, medical devices, NFC solutions, industrial controllers, and advanced multi-layer PCB design. I have deep experience in designing reliable, production-ready hardware using modern MCUs (ESP32, STM32, PIC, TI, C2000, Spartan 7 (AMD)), high-power topologies, battery systems, and a wide range of communication protocols. My lab is fully equipped for prototyping, testing, and validation, including oscilloscope work, precision measurements, firmware bring-up, and full board bring-up. ________________________________________ Professional Background • 5+ years of hardware engineering experience • 50+ completed projects, including: o Buck, boost, flyback, and PFC buck converters o BMS systems (1–16 cells) o E-bike inverter, motor control boards, motor drivers o E-bike chargers and high-efficiency power supplies o Nanosatellite power supply modules o Wearable devices (ultra low power + haptics + sensors) o Medical devices (Class A/B prototyping) o Industrial control cards (TI, ESP32, STM32, C2000, Spartan 7 (AMD)) o Wireless systems (BLE, Wi-Fi, LoRa, NFC) o Toys and consumer electronics o Rigid and rigid flex PCBs (2–16 layers) o Screen sterilization system controllers I have designed boards ranging from 1 to 16 layers, including rigid flex adapters, ultra compact wearable PCBs, motor control boards, high voltage/current power stages (up to 3 kW), and RF capable layouts. ________________________________________ Technical Expertise Hardware & Power Electronics • Topology selection: buck, boost, flyback, SEPIC, PFC buck, forward, synchronous drivers • Wide range power design up to 3 kW, switching frequencies up to 200 kHz • Battery systems: BMS, balancing, charging, MOSFET drivers • Motor control drivers (BLDC, brushed DC, E bike) PCB Design • Professional PCB layout using: o Altium Designer (primary) o KiCad, OrCAD, PCAD, EasyEDA • High density, mixed signal, high current, HV, and EMC safe design • Rigid flex, flex adapters, microcontroller modules, RF layouts • Full DFM/DFT optimization for production Communication Protocols • CAN, I²C, SPI, UART, RS485 • Bluetooth, Wi Fi, BLE Mesh, ESP NOW, LoRa • Ethernet LWIP, NFC, custom short-range communication Software & Simulation • MATLAB, Simulink, PSpice • LTspice, TINA, Altium simulations • Firmware bring up (ESP-IDF, STM32 HAL, Arduino) Prototyping & Testing • Soldering, rework, fault analysis • Gate driver tuning, feedback loop stabilization • Load testing, thermal evaluation, EMC preparation ________________________________________ Achievements • 1st Place – IFEC 2019 (E-bike drive) • 2nd Place – IFEC 2020 (Nanosatellite power supply) — Team Leader & Hardware Lead • Former CTO of a hardware startup (2 years) • Project Manager for solar power plant automation (1 year) • Over 50 projects and 1300+ billable hours on Upwork ________________________________________ Notable Project Types • Screen sterilization controllers (UV / chemical) • Wearable devices (IMU + LRA haptics + battery optimization) • Medical device prototyping • Power supplies (industrial, consumer, nanosatellite grade) • Custom rigid flex boards & adapters • NFC-triggered activation devices • Motor control & drive boards ________________________________________ Let’s Work Together Best regards, Luka Knežević