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

Welcome to my Upwork profile. I am an Aerospace Engineer specializing in Computational Fluid Dynamics (CFD), UAV systems, structural analysis, and advanced engineering simulations. In addition to working individually, I serve as the CEO of InPhoenix Private Limited, an engineering company focused on aerospace systems, UAV development, simulation-driven design, and multidisciplinary mechanical engineering solutions. Through my individual expertise and the collective capability of our engineering team, we deliver complete, industry-grade solutions — from concept development to validated engineering outputs. Our strength lies in combining deep technical knowledge with practical implementation experience. –––––––––––––––––– CFD & Aerodynamic Analysis Computational Fluid Dynamics is a core competency. With a Master’s degree in Aerospace Engineering and years of applied industry experience, I have led and executed complex aerodynamic and thermal simulations across aerospace and mechanical systems. We handle: • External aerodynamics (UAVs, aircraft, automotive bodies) • Internal flow systems (ducts, propulsion, cooling systems) • Turbulence modeling and performance optimization • Heat transfer and multiphase flow problems Tools: ANSYS Fluent, ANSYS CFX, STAR-CCM+, COMSOL, OpenFOAM –––––––––––––––––– UAV Design & Drone Engineering UAV development is one of our primary domains. We have designed and developed multiple UAV platforms including VTOLs, fixed-wing aircraft, multirotors, long-endurance UAVs, FPV systems, and specialized mission platforms. Our approach covers: • Conceptual sizing and configuration development • Aerodynamic optimization • Structural validation • Propulsion integration • Flight performance analysis • Autonomy and control system integration Software ecosystem: SolidWorks, CATIA V5/V6, Advanced Aircraft Analysis (AAA), X-Plane, Fusion 360, Blender, ROS, Gazebo, ArduPilot, FlightGear, Betaflight We integrate AI and machine learning where required to enhance autonomy, navigation, and mission intelligence. –––––––––––––––––– Structural Analysis & FEA We perform detailed structural validation and optimization using both analytical and numerical approaches. Our experience includes composite airframes, metallic structures, mechanical assemblies, and load-critical aerospace components. Capabilities: • Static and dynamic structural analysis • Load case development • Buckling and fatigue assessment • Lightweight optimization • Failure prediction Tools: ANSYS, ABAQUS, SolidWorks Simulation, NX Nastran –––––––––––––––––– AI & Engineering Automation With strong foundations in Python and MATLAB, we develop intelligent engineering workflows, predictive models, and optimization frameworks that enhance system performance and decision-making. Applications include: • UAV autonomy and guidance logic • Sensitivity analysis and model optimization • Data-driven performance enhancement • Simulation automation –––––––––––––––––– Mechanical Engineering & Product Development Beyond aerospace, we handle mechanical product design, CAD modeling, CFD/FEA validation of components, and engineering analysis for industrial applications. Our work is structured, data-driven, and aligned with real-world manufacturing constraints. –––––––––––––––––– If you are looking for: • High-level aerospace engineering expertise • A capable engineering team behind a single point of contact • Industry-grade simulation and validation • UAV design and development support • CFD, FEA, or AI-driven engineering solutions You are in the right place. Let’s discuss your project requirements and build something technically sound, optimized, and scalable.

Electronics hardware contractor specializing in PCB design, mixed-signal product development, high-voltage/high-isolation systems, hardware debug, manufacturing support, and embedded system integration for regulated or technically demanding products. Clients seeking precision in PCB design, signal processing, or biomedical applications can rely on my proven track record and dedication to excellence. My portfolio showcases detailed project work, including research on ECG and respiration. Let's collaborate to bring your project to fruition with technical expertise and innovative solutions. Top Skills: PCB Design & Simulation: Proficient in creating high-performance PCB layouts for complex electronic systems. Signal Processing: Specialized in ECG signal analysis and respiratory rate detection algorithms. Embedded Systems: Experienced in developing integrated systems for various applications. Biomedical Engineering: Research on the impact of respiratory signals on ECG outputs. Notable Projects: EEG Active Electrode Design, Testing, and Validation: Developed and validated cutting-edge EEG electrodes for enhanced signal accuracy. ESP32 ECG Implementation: Implemented ECG monitoring solutions using an ESP32-WROOM-32E.

I am a dedicated and results-oriented freelancer with a proven track record in code analysis, code development, and computational modeling. My passion lies in deciphering intricate physical phenomena across diverse systems, including protein interactions, colloidal systems, polymers, and liquid crystals. I possess a deep understanding of numerical methods and code development and analysis. I am adept at tackling complex computational challenges, integrating theoretical concepts with practical implementation to ensure accurate and reliable simulations. I am a reliable and dependable team player, but I also work effectively independently. I am committed to continuous learning and staying at the forefront of advancements in computational modeling.

I am a computational physicist (PhD and postdoc in computational photonics) with extensive experience of solving physical/mathematical problems in both academia and industry. The following provides a summary of the work I have done: 1) Computational simulations of physical systems. This involved electromagnetics, electro and magnetostatics, current flow in ionic cells (dc and ac), diffusion, structural mechanics and charged particle tracing. 2) Optical system design and analysis. I specialize in optics so this topic has been a recurring part of my work. Particular examples include Fourier optics, gaussian beam propagation and aberration analysis. 3) Machine learning, mathematical optimization and signal processing. Physical problems in products naturally overlap with concepts in mathematical modelling. I have used signal processing, machine learning and nonlinear optimization and filtering methods for both 1D and 2D data. 4) I began my journey as an electrical engineer. I am familiar with electrical systems and have hands on experience of programming microcontrollers and FPGAs. As for tools, I am an advanced user of Comsol Multiphysics and opensource FEM code FeniCS. For scientific programming, I have extensively used Matlab, Python and Julia.

I have over 4+ years of experience in designing, developing, and debugging complex digital systems on Xilinx platforms, including Zynq-7000, Zynq UltraScale+, and custom FPGA boards. Proven expertise in RTL design, high-speed SERDES communication, and AXI4-based IP development. Hands-on experience with video processing pipelines using H.264 encoders, V4L2 drivers, and MIPI CSI2 interfaces, as well as embedded Linux integration via PetaLinux. Adept at multi-team collaboration, hardware bring-up, and solving intricate engineering challenges across global projects. Proficient in Xilinx Vivado, Vitis, and scripting with Python/TCL.

My research has been accepted at CVPR'25 and ICCV'25 — the two most competitive computer vision conferences in the world. I now bring that same precision to client projects. I'm a Computer Vision PhD (Griffith University, Postdoc at University of Melbourne) with 7+ years turning hard visual problems into production systems. My work spans: Object Detection & Tracking — custom YOLO, DETR, and ByteTrack pipelines for real-time performance on edge and cloud Medical Image Analysis — MRI/CT segmentation, diagnostic AI, clinical-grade accuracy using PyTorch and MONAI Generative AI & ComfyUI — Stable Diffusion fine-tuning, ControlNet pipelines, custom ComfyUI node development 3D Vision — LiDAR point cloud processing, depth estimation, multi-view stereo, NeRF reconstruction Semantic Segmentation — autonomous vehicle, remote sensing, and industrial inspection systems Past clients describe me as: "a true expert with strong knowledge", "delivers excellent work, clear and professional", "highly recommended AI consultant". I work with scale-ups and product teams who need senior-level Computer Vision expertise — not just a model, but a system that performs. Available now. Let's discuss your project.

PhD in power electronics, electrical machines and drives Digital control of electrical machines and drives is my speciality

Hello, thank you for checking out my profile. I'm a Certified LabVIEW and MATLAB Developer with over 5 years of experience in signal processing, FPGA, and Embedded System Design. With a strong set of skills and expertise, I bring proficiency in developing cutting-edge solutions in these domains. My strengths lie in my deep understanding of LabVIEW and MATLAB, allowing me to design and implement efficient algorithms for signal processing tasks. I excel in FPGA programming, leveraging its power to accelerate computations and optimize system performance. Additionally, my expertise extends to embedded systems design, where I have successfully developed robust solutions for various applications. Throughout my career, I have been involved in several notable projects such as Signal Processing of mm-wave Radar for Driver Drowsiness and Child Presence Detection for Vehicle In-Cabin Monitoring System which showcase my ability to deliver high-quality results. I have successfully implemented complex signal processing algorithms, enabling real-time data analysis for critical applications. Furthermore, my experience in FPGA design has led to significant improvements in system speed and efficiency. I hold a strong educational background, having obtained relevant certifications and a degree in Electrical Engineering. This foundation has equipped me with a solid theoretical understanding, which I consistently apply to real-world challenges. In summary, as a Certified LabVIEW and MATLAB Developer, I possess a wealth of experience in signal processing, FPGA, and embedded system design. My proven track record of delivering successful projects, along with my expertise and educational background, make me a valuable asset in tackling complex engineering problems. .

Greetings! I am an adept Analog and Digital Circuit Designer, specializing in Integrated Circuit (IC) design. With experience in 5 IC tape-outs utilizing different PDKs such as 28nm, 45nm, 65 nm, 110 nm, 130nm, and 180 nm, my expertise lies in designing and simulating Analog ICs (Schematic to GDSII), Digital ICs (RTL to GDSII), Mixed-signal integrated circuits (SoC), RISC-V Backend Design( RTL-GDSII) and RF ICs (upto 60GHz). Proficient in tools like Cadence Virtuoso, Mentor Graphics Calibre, Cadence Genus, Encounter/Innovus, Synopysis DC compiler, PrimeTime, ICC2, Custom Compiler, VCS, Xilinx, Vivado, Quartuas, Modelsim, Matlab, and OpenSource ASIC design tools like "Openlane." & "Xscheme". Proficient in Programming Language C/C++, Verilog, VHDL, and System Verilog. Eagerly await your response. Thank you.