I design hardware, firmware, and embedded systems — and take them all the way to fabrication. If you're a startup or product team that needs a working board, solid firmware, and an enclosure that's actually manufacturable, I can build the whole thing, not just one piece. Based in Mexico City (US Central time), so I work in your timezone at nearshore rates — senior-level engineering without the $150/hr consultancy price tag or the months-long wait. What I deliver: • Multi-layer PCB design in KiCad — schematic, layout, controlled-impedance routing, DRC-clean Gerbers ready for JLCPCB or your fab • STM32 firmware in C (STM32Cube) — clean, documented, and tested on real hardware • CNC / 3D-print-ready enclosures in FreeCAD, with 2D manufacturing drawings • Full handoff documentation so your team can build on what I deliver Specialty areas: RF and high-frequency layout, surge protection, mixed-signal boards, and IoT connectivity. How I work: I start every project with a short call to scope it honestly and give you a fixed price. I reply within a couple of hours, communicate clearly throughout, and if I'm not the right fit, I'll tell you. Message me with what you're building — I'll tell you exactly how I'd approach it.

I am a freelance draughtsman with over 9 years of experience in the design and engineering industry. Skilled in SolidWorks, AutoCAD, and Fusion 360, I specialize in producing precise 2D and 3D drawings for a wide range of applications. My expertise includes structural steel detailing as well as yacht design, combining technical accuracy with creative problem-solving. I am committed to delivering high-quality, reliable design solutions that meet project specifications and client expectations

Tengo la experiencia en desarrollos de automatización de procesos con PLCs, Scada, Desarrollo de aplicaciones con Powerapps , PowerBi, sharepoint y microsoft access permitiendo realizar : 👍.1-Dashboard para ver indicadores de desempeño 👍2.- Progama para ver la grafica de costos asociados a ventas y ganancias 👍3.-Check List de trabajos de supervision en mocil , tablet , laptop, PC 👍 4.- porgramar a traves de PLC logo, sistema de bombeos y adquisicion de datos en archivos cvs transfiriendo los datos de medicion en powerapps 👍5.- Desarrollo de ATS y consignas operativas en access 2019 👍6.- Desarrollo de registro de mediciones de T°, voltajes, corrientes , potencia, para operadores donde quedan almacenados en la nube , creando una grafica de forma automatica para ver los tipos de comportamientos de la maquinas y su historial

Mateus Sonnewend Senior Mechanical Engineer | Product Development Specialist Salvador, Bahia, Brazil | +55 71 98428-7986 PROFESSIONAL SUMMARY Senior Mechanical Engineer with over 15 years of experience in the automotive industry, specializing in end-to-end product development—from conceptual design to high-volume manufacturing (DFM/DFA). Proven track record of delivering high-performance engineering solutions for global leaders such as GILLIG, Monarch Tractor, and Ford. Expertise lies in structural engineering and the future of mobility, including electric and autonomous vehicle platforms. ________________________________________ TECHNICAL SKILLS • Structural Design: Heavy-duty chassis, Body in White (BIW), and precision sheet metal components. • Thermal Systems: Expert 3D Routing for engine/transmission cooling and Battery Thermal Management Systems (BTMS). • CAD/CAE/PLM Tools: Expert proficiency in Siemens NX (including Routing), CATIA V5/V6, SolidWorks, and Altair SimSolid. • Lifecycle Management: Advanced use of Siemens Teamcenter, Adept, and JIRA for milestone tracking and ECO/ECN management. • Methodologies: Design for Manufacturing (DFM), Design for Assembly (DFA), and Lean Six Sigma. ________________________________________ PROFESSIONAL EXPERIENCE The PAC Group / GILLIG (USA - Remote) | Senior Mechanical Design Engineer January 2024 – Present • Develop high-fidelity 3D models (Siemens NX) and 2D technical drawings for chassis components, ensuring full DFM/DFA compliance for Electric and Fuel Cell bus platforms. • Design complex 3D routing for Engine/Transmission Coolant Systems and Battery Thermal Management Systems (BTMS). • Execute structural and modal analysis using Altair SimSolid to validate design integrity and accelerate development cycles. • Manage technical documentation and engineering changes (ECO/ECN) within Teamcenter while tracking milestones via JIRA. The PAC Group / Monarch Tractor (USA - Remote) | Senior Mechanical Design Engineer May 2022 – January 2024 • Engineered structural metal components and exterior plastic body parts for the first commercialized electric autonomous tractor in the US market. • Executed complex 3D modeling and surfacing for plastic components using SolidWorks, ensuring DFM compliance for injection molding and thermoforming. • Conducted advanced reverse engineering of existing components to optimize mechanical performance and reduce manufacturing costs. MSX International (Ford Motor Company) | Product Engineer January 2014 – August 2016 • Defined and validated occupant accommodation attributes for global vehicle programs, balancing interior comfort and structural constraints. • Acted as technical focal point for SAE J1100 standards, using CATIA V5 to audit 3D digital mock-ups against safety regulations. • Led interior packaging studies for the EcoSport facelift (B515 MCA) to support design freezes and engineering approvals. The PAC Group (Ford Motor Company) | Senior Product Engineer | BIW Structural Surfacing June 2011 – January 2014 • Performed high-complexity 3D surface modeling for Body-in-White (BIW) structures using CATIA V5. • Engineered surface transitions and flanges optimized for high-volume sheet metal stamping, ensuring proper draw angles. • Developed the structural skeleton for the New Ford Ka and New EcoSport global platforms. ________________________________________ EDUCATION • Postgraduate Specialization, Automotive Engineering Technology – Anhanguera Educacional (April 2025 - December 2026). • Bachelor’s Degree, Mechanical Production Engineering – Unibahia. ________________________________________ CERTIFICATIONS & LANGUAGES • Certifications: Lean Six Sigma Yellow & White Belt , Plastic Part Design Essentials , Fundamentals of Vehicle Design and Packaging. • Languages: English (Full Professional Proficiency), Portuguese (Native). • Visa: American B1/B2.

I am a mechanical engineer with three years of hands-on experience in designing and optimizing mechanical systems. My expertise includes advanced problem-solving and utilizing innovative engineering solutions to enhance efficiency. I have a solid foundation in front office management, which enriches my collaborative skills and customer service approach. Whether you need assistance with product design, system analysis, or project management, I have the technical acumen and communication skills to drive your projects forward. I thrive on challenges, and I am eager to contribute to your projects with precision and creativity. Let's discuss how I can help turn your ideas into reality.

Je suis un étudiant motivé et rigoureux, passionné par les mathématiques, la physique et la conception assistée par ordinateur avec FreeCAD. J'aime résoudre des problèmes techniques et acquérir continuellement de nouvelles compétences. Mes points forts incluent l'aide en mathématiques et en physique, ainsi que la réalisation de modèles et dessins techniques simples sur FreeCAD. Je suis attentif aux détails, organisé et déterminé à fournir un travail de qualité. Je m'engage à respecter les délais et à répondre aux besoins des clients avec sérieux et professionnalisme.

I help startups and companies turn innovative ideas into market-ready electronic products. I specialize in end-to-end hardware development from schematic to PCB layout, power design, prototyping, and debugging. ⭐ Core Expertise Power Supply & SMPS design (AC-DC, DC-DC, PoE, battery systems). Custom PCB design (2–10 layers, high-speed & RF routing). Component selection & BOM optimization. Hardware architecture for IoT, BLE, GSM, LoRaWAN, GPS devices. Mixed-signal & analog circuit design. Sensor & actuator integration. 3D enclosure support (FreeCAD). Hardware debugging and validation. ⭐ Communication Protocols UART / RS232 / RS485 SPI, I2C, CAN USB, Ethernet Bluetooth, WiFi LoRaWAN RFID, NFC DLMS ⭐ Microcontroller Platforms ESP32 / ESP8266 STM32 (F0/F1/F4) Raspberry Pi / CM4 / CM5 Texas Instruments MCUs Nordic nRF52 NVIDIA Jetson Arduino ecosystem ⭐ Tools & Software Altium Designer KiCad EasyEDA LTspice Saturn PCB Toolkit FreeCAD Oscilloscope, Multimeter, Logic Analyzer ✨ Why Work With Me? I focus on: ✔ Reliable hardware that passes manufacturing. ✔ Clean PCB layout with controlled impedance. ✔ Optimized BOM to reduce cost. ✔ Fast communication and on-time delivery. ✔ Full support until your prototype works perfectly. Your success is my success. Let's build something amazing together!

Overview: Experienced professional with a diverse background in manufacturing, process engineering, and sales supervision. I bring over 16 years of expertise in process optimization, data analysis, profitability strategies, and quotation management. My career spans across roles as a Process Engineer, Process Engineering Supervisor, and Sales Supervisor, equipping me with a unique blend of technical and commercial acumen. I specialize in: Data-Driven Decision Making: Analyzing complex datasets to uncover insights and trends. Estimation & Quotation Management: Crafting precise estimates and quotations, ensuring profitability and customer satisfaction. Profitability Analysis: Identifying cost-saving opportunities and optimizing processes for better margins. Process Optimization: Applying continuous improvement methodologies (Lean, Six Sigma) to enhance operational efficiency. Sales Strategy & Client Relationship Management: Leading sales teams, driving revenue growth, and maintaining excellent client relations. Key Skills: Data Analysis (Excel, Google Sheets, Looker Studio, Power BI) Quotation & Profitability Management Process Improvement (Lean, Six Sigma) Sales Supervision & Client Relations KPI Development & Reporting Workflow Automation (Power Automate) Manufacturing Operations What I Can Do for You: Develop detailed quotes and cost estimations tailored to your business needs. Perform in-depth profitability analysis to identify improvement opportunities. Optimize workflows using process improvement frameworks for operational efficiency. Create and automate data reports to track KPIs and performance. Provide sales insights and strategies to improve conversion and customer retention. Why Work with Me? I understand both the technical and commercial aspects of business, which allows me to provide well-rounded solutions that drive results. Whether you need estimates, process improvements, or data-driven strategies, I can deliver with precision, professionalism, and a focus on customer satisfaction and profitability. Let’s Connect! Ready to optimize your processes, streamline sales, and boost profitability? Let’s discuss how I can add value to your project.

Creative and detail-driven Graphic Designer & Illustrator with years of freelance experience and a refined eye for various art/design styles and aesthetics. Adept at shaping visuals that bring stories to life and connect emotionally with audiences. Experienced AI Data Specialist with strong capabilities in visual data evaluation, image qualification, audio transcription, data annotation, and dataset quality assurance for AI training workflows. Able to leverage a trained visual eye and design expertise to optimally assess, refine, and qualify AI-generated or real-world visual data, ensuring accuracy, consistency, and high-quality outputs across image-related tasks. Core Skills: - Graphic Design & Illustration (Branding, Collaterals, Layout, Typography, Web/Social Visual Assets, All kinds of Illustrations). - AI Data Specialist (Image Qualification, Data Annotation, Dataset Evaluation, Pairwise Comparison, and Visual Quality Assessment). Additional Skills: 3D CAD, CSS, HTML, JavaScript, C#, C++, and Python. Tools: Photoshop, Illustrator, InDesign, Canva, Figma, Affinity, Inkscape, CSP, Procreate, Krita, Davinci Resolve, Microsoft Office 365, Google Workspace, ComfyUI, FreeCAD, VSCode, and Visual Studio. Language: Bahasa Indonesia (Native) and English (Professional Working Proficiency (B2-C2)).

Hello there, this is Mueez Ul-Haq: a professional mechanical engineer with specialization in thermal power systems. I have experience in designing thermal power and management systems for small-scale applications. From designing systems and testing them using MATLAB, to validating results using the power of FEA and CFD tools, I have the expertise to take a project from its concept stage to working prototyping. I offer following services: 1. Design analysis; Simulation Design and comparative study using MATLAB and Simscape 2. FEA/CFD using Abaqus, ANSYS, and OpenFOAM 3. Thermal power systems; Thermal Management 4. Renewable energy modelling and analysis 5. Mechanical Design; Structural Analysis I have five years of experience with MATLAB/Simulink/Simscape, four years with SOLIDWORKS, and three years with ABAQUS and ANSYS. I can also work with open-source tools including OpenFOAM, OpenSCAD, and FreeCAD. I also do C++ development as hobby projects. My hobbies are Doom and anime.