Hire the Best PSPICE Specialists

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

From concept to tested prototype, I design high-performance PCBs and embedded systems for startups, engineers, and product teams who need results that work the first time. With 8 years of experience in embedded systems and hardware design, I specialize in creating production-ready electronics that are efficient, reliable, and built for scale. Whether you're developing a new product or improving an existing design, I bring the technical expertise and problem-solving mindset to get it done right the first time. 💡 What I Offer: 🔹 Embedded System Development: ARM Cortex, STM32, ESP32 🔹 Advanced PCB Design: From 2-layer to complex multilayer boards with BGA, RF, and high-speed signals 🔹 Cost-Effective Engineering: Focused on value without compromising quality 🔹 Rapid Prototyping: Helping you move from idea to working prototype quickly 🔧 Core Technical Skills: ✔️ Analog & Power Circuit Design: LED drivers, SMPS, sensor interfacing ✔️ Motor Control & Drive Systems ✔️ Signal Integrity & EMC/EMI-Conscious Design ✔️ Communication Protocols: RS232, RS485, I2C, SPI, UART, CAN ✔️ Firmware Development: Embedded C/C++ for real-time applications 🛠️ Tools & Platforms I Work With: 👉 Altium Designer – Industry-standard PCB design 👉 LTspice – Analog simulation & validation 👉 Proteus – Embedded system simulation 👉 Signal integrity tools and EMI/EMC testing preparation 🚀 Why Work With Me? ✨ Proven record of delivering on time and exceeding expectations ✨ Strong communicator who makes complex things simple ✨ Practical experience with certification-ready hardware ✨ Affordable, efficient, and results-oriented 🎯 Let’s Build Something That Works Whether you're launching a new product, troubleshooting a design, or scaling to production, I’m ready to help bring your vision to life with solid engineering and dependable execution. 👉 Check out my work: github.com/zainsiddiqui-zz 📩 Let’s connect and build your next success.

Need an expert to set up, manage, and optimize your Mirakl marketplace? I’m here to help. 🏆 YOUR SUCCESS IS MY PRIORITY 🏆 Hi, I’m Maria — an experienced Mirakl Connect Specialist and E-commerce Virtual Assistant with 5+ years of combined experience in marketplace operations, seller onboarding, product catalog management, and multi-platform e-commerce support. I’ve worked with B2B and B2C brands to streamline their workflows, improve product accuracy, and ensure seamless seller and marketplace operations. With hands-on experience in Mirakl Connect, Shopify, GoFlow, Wayfair, and other major platforms, I’ve supported businesses from setup to growth—always focusing on accuracy, efficiency, and smooth coordination across teams and sellers. What I Can Do for You ✅ Mirakl Connect Setup & Configuration ✅ Seller & Brand Onboarding ✅ Product Listing, Mapping & Validation ✅ Catalog Optimization & Quality Control ✅ Offer, Order & Refund Synchronization ✅ Marketplace Operations & Issue Resolution ✅ Shopify, GoFlow & Sellercloud Product Support ✅ Email Management & Technical Support ✅ Workflow Streamlining & Data Accuracy Improvements Why Clients Choose Me 🔍 Detail-Oriented & Reliable — Consistent top performer for email and call support. ⚡ Efficient & Tech-Savvy — Experienced with complex catalog structures and integrations. 🌍 Flexible & Communicative — Strong written English and global team experience. 🔐 Professional & Trustworthy — Ensuring accuracy, confidentiality, and quality results. Tools & Platforms I Use ✔ Mirakl Connect ✔ Shopify, GoFlow, Sellercloud ✔ Microsoft Office & Google Workspace ✔ Slack, Teams, Zoom, Skype ✔ Canva, Calendly, Grammarly If you’re looking for someone who can manage your Mirakl operations with accuracy, consistency, and professionalism — I’d love to help. Send me a message, and let’s discuss how I can support your marketplace growth. 🚀

I am a Senior Power Systems Engineer specializing in **grid interconnection, compliance, and system impact studies** for **renewable generation, BESS, hybrid plants, conventional generation, and large industrial / data center loads**. I deliver **utility-, ISO-, and TSO-ready studies** using **PSS®E, PowerFactory, PSCAD, and ETAP**, covering the full range of technical assessments required for project development, connection applications, design review, and compliance demonstration. My work supports **Solar PV, Wind, BESS, Hybrid plants, conventional power facilities, and data centers**, with studies prepared in a way that reflects how utilities and system operators actually review **models, assumptions, plots, test evidence, and compliance conclusions**. I support clients from early-stage screening through submission-ready packages, including clear RFIs, defensible assumptions, clean technical plots, and structured reports suitable for utilities, TSOs, ISOs, developers, EPCs, and owners’ engineers. Core Services Grid Interconnection & Compliance Studies * Load flow and operating case assessment * Short-circuit / fault level calculations * RMS dynamic stability studies * Grid code and interconnection compliance benchmarking * Utility / ISO submission-ready technical reports * Model review, validation, and technical support during review cycles ### Renewable Generation / BESS / Hybrid Plants * Solar PV, Wind, BESS, and Hybrid plant interconnection studies * LVRT / HVRT / LFRT / HFRT assessment * Reactive power capability and voltage control performance * Frequency response and plant controller performance * Weak-grid assessment and control interaction review * PRC / MOD / MQT / G99 / G5 compliance support ### Data Center & Large Load Studies * Grid connection studies for **large industrial loads and data centers** * Load flow, contingency, and thermal capacity assessment * Point of interconnection screening and transfer capability review * Motor starting / dynamic load behavior review where applicable * Voltage stability and reactive power performance assessment * Large load ride-through and dynamic behavior assessment * Support for connection strategy, substation concept review, and utility-facing technical documentation ### Design & Engineering Support * Single-line diagrams (SLD) * Cable and conductor sizing * Grounding / earthing grid studies * Surge arrester selection and insulation coordination * Protection coordination and selectivity studies * Relay setting review and interface logic support ## Technical Services ### Short-Circuit Studies * Fault calculations to IEC 60909 and IEEE methods * Breaker duty and X/R ratio verification * IBR fault contribution assessment * Faulted operating condition evaluation ### Dynamic (RMS) Studies * Transient stability and oscillatory damping * Frequency response and control performance * LVRT / HVRT / LFRT / HFRT benchmarking * Weak-grid and controller interaction studies * Plant controller and model tuning support ### EMT Studies * IBR control interaction and converter dynamics * Fast transient and weak-grid EMT validation * Special operating scenarios and black-start studies where required * OEM / utility EMT model review and benchmarking ### Protection & Control Interface * Relay coordination support * PRC-019 interface checks * Voltage / frequency protection coordination with IBR controls * SCADA / Modbus / IEC 61850 signal and interface logic review ## Grid Codes & Standards Experience **United States** NERC PRC(029 024 019) & MOD(025 026 027 032) standards, ERCOT, PJM, NYISO, MISO, SPP, CAISO IEEE 519, IEEE 1453, IEEE 1547 ERCOT model quality and interconnection processes **United Kingdom** ENA G99 ENA G5/5 P28 / P29 DNO submission and acceptance support **Germany / EU** VDE-AR-N 4110 / 4120 FGW TR3 / TR4 / TR8 references Additional regions can be supported based on project documentation and applicable grid-code requirements. ## Software * PSS®E * DIgSILENT PowerFactory * PSCAD * ETAP * MATLAB / Simulink * AutoCAD ## Deliverables * Technical reports * RAW / DYR files * PowerFactory projects * PSCAD cases * ETAP models * Parameter summaries * Validation plots * Submission support documents ## Why Clients Work With Me * Clear scope definition from the start * Strong RFIs and efficient data collection * Technically defensible assumptions * Utility-ready reports and plots * Combined RMS and EMT capability I can support complete interconnection packages or single-study scopes, depending on project needs. If you have an RFP, grid-code requirement, interconnection document, utility feedback package, or study scope, I can review it and help define a clear technical approach, deliverables list, and schedule.

Being an expert on project design and management, data analytics, and implementing research tools, I enjoy searching for a sustainable solution to any complexity in my favorable fields. I am quite an expert in MATLAB Simulink-based projects and simulation on Electrical and Electronic based projects. I possess the quality to communicate, capable of understanding what is needed, and the leadership skills. Meeting deadlines and ensuring client satisfaction are my top priorities. My Service includes: 1. Integration of power systems 2. Control system 3. Grid Integrations 4. Microgrid design 5. Storage system design 6. Electric Vehicle 7. Converter and Inverter design 8. Fault Analysis 9. Load Flow Analysis 10. AutoCAD Design 11. All types of Electrical Engineering Projects of any level. Feel free to inbox me anytime.

Looking for someone you can trust to get the job done right? 👋 Hello there! I'm Rogelio your go-to A+ Ticket Broker Assistant ready to help! 🧝🏻‍♀️ A+ Ticket Broker Assistant ⚡️ Fast moving, Quick study, and Tech-Savvy ✅2 Monitors ✅Quiet workstation for me to focus on the tasks ✅High end Desktop ✅Noise cancellation Headphones 🛜 With 200 Mbps. Internet connection 🌐 Services I Offer: Ticket Fulfillment and Inventory Management 📊: -Skilled in facilitating the transfer of parking passes and concert tickets between accounts, ensuring a smooth and accurate process. I manage and verify transfer requests to uphold high customer satisfaction, providing prompt assistance and resolving any issues that arise. -Efficiently process and fulfill ticket orders with a strong focus on accuracy. I collaborate closely with suppliers and clients to ensure timely delivery of tickets and quickly address any discrepancies. I also conduct regular audits of ticket orders across various marketplaces and software, specifically focusing on rows and sections to optimize inventory management -Managing orders across multiple platforms requires precision, and I pride myself on my ability to handle each transaction with care, ensuring accuracy and customer satisfaction. -Verify and process incoming ticket orders with attention to detail, ensuring accurate entry of customer and order information into the system. Confirm payment processing, swiftly addressing any payment-related issues. Generate and send order confirmations and digital tickets to enhance customer experience and satisfaction. Ticket Pricing 📈: -Knows how to analyze market trends to establish competitive ticket pricing. Adjust prices based on demand and the status of the event to optimize sales and maximize revenue. -Handling sensitive information, adhering to best practices in data protection to maintain accuracy and confidentiality. My approach ensures that your data is always secure and reliable. Ticket Purchasing/ Buying 🤝: -Experienced in identifying and selecting best ticket seats and parking passes to enhance profits and revenue, while effectively collaborating with teams and clients to address their needs. Proficient in purchasing tickets on major platforms such as Ticketmaster, AXS, Live Nation, ETIX, and Eventbrite MS Excel/Spreadsheet/Workspace🕵️‍♀️: -Utilize complex formulas, pivot tables, charts, and data visualization techniques to transform raw data into meaningful insights. Whether it’s automating processes, analyzing trends, or creating detailed reports, I ensure that data works for you. 📧: Managing multiple tasks and meeting tight deadlines with ease. My ability to prioritize and delegate ensures that projects are completed on time and to the highest standard 🎯 Why Choose Me? ✨ Knowledgeable about Ticketing System & Tools ✨ Detail-oriented and highly organized. ✨ Accurate and efficient with strong attention to detail. ✨ Excellent communication skills. ✨ Adaptable to diverse tasks and industries. ✨ Master's Degree in Business Administration TOOLS: 👉🏻 Manage Tasks smoothly and fast-moving through the tools to ensure efficiency and leniency 🔑 DTI 🔑 StageFront 🔑 Automatiq (Uptick) 🔑TicketBroker U 🔑Microsoft Office Suite (Word, Excel, PowerPoint) 🔑Google Workspace 🔑Discord 🔑Slack 🔑MS Teams &Outlook 🔑Zoom 🔑DIFFERENT DIGITAL PHONE SYSTEM 🔑Skype 🔑Insomniac Browser 🔑Jancy Browser If you are ready, Let's talk, and let me give you time to enjoy life without worrying about your business.