Leopoldo M.

I help businesses solve complex technical problems through power electronics engineering, hardware debugging, failure analysis, software development, and IT infrastructure management. With 14 years of power supply design and R&D experience at NEC and Emerson Network Power, combined with my recent experience as a Senior Debug Engineer at XP Power Vietnam, I bring a strong combination of hardware engineering, troubleshooting, and software expertise. ⚡ POWER ELECTRONICS & HARDWARE ENGINEERING I have extensive experience developing switch-mode power supplies (SMPS), from initial concept and circuit design to testing, quality assurance, mass production, and customer support. Core competencies: AC-DC and DC-DC power supply design Flyback, forward, buck, boost, half-bridge, and full-bridge topologies Hardware debugging and failure analysis (FA) Circuit troubleshooting and root-cause investigation Schematic analysis and component evaluation Transformer and magnetic component considerations EMI/EMC, efficiency, thermal, and reliability considerations Design validation, testing, and manufacturing support Intelligent power supplies with temperature, fan, load, and communication controls using programmable ICs Engineering coordination and technical documentation Previous engineering experience: Emerson Network Power — R&D Astec Senior Design Engineer NEC Philippines, Inc. — R&D Telecom Division Senior Hardware Design Engineer During my 14 years in power electronics R&D, I developed power supplies ranging from cellphone chargers and standard off-the-shelf PSUs to custom-designed products. My experience covers the product development lifecycle, engineering coordination, testing, production, and customer support. At XP Power Vietnam, I have also worked as a Senior Debug Engineer, applying hands-on troubleshooting and failure analysis to electronic products and manufacturing challenges. 💻 SOFTWARE & WEB DEVELOPMENT I have provided freelance technical services since 2011, helping businesses develop, maintain, and integrate their online systems. Web development: WordPress development and maintenance PHP, HTML5, CSS3, JavaScript, and jQuery PSD-to-HTML and PSD-to-WordPress conversion WordPress Multisite Website troubleshooting and optimization REST and SOAP API integration Marketing automation and CRM: Experience with Infusionsoft (Keap), AWeber, GetResponse, Mailchimp, Zapier, Workato, DocuSign, TurboDial, PlusThis, Wicked Reports, and other business applications. Membership platforms and page builders: CustomerHub, iMember360, Wishlist Member, OptimizeMember, MemberMouse, Memberium, LearnDash, Articulate Storyline, OptimizePress, Leadpages, ClickFunnels, Divi, and Thrive products. Project management and collaboration: Asana, Slack, Teamwork, Google Workspace, Skype, and WhatsApp. ☁️ SERVER ADMINISTRATION & IT INFRASTRUCTURE My experience also includes managing websites, servers, and cloud environments. Amazon Web Services (AWS) Linux and Ubuntu administration cPanel and WHM Cloudflare and DNS configuration Website deployment, hosting, and maintenance Server and application troubleshooting API connectivity and system integrations 🎧 ADDITIONAL TECHNICAL & BUSINESS SKILLS Audio editing, cleanup, and mastering Podcast editing and production Video editing and tutorial creation Technical documentation and virtual assistance Project coordination and task management Quality management and process improvement Lean Enterprise and 5S principles 🤝 WHY WORK WITH ME? Broad technical expertise: I combine power electronics engineering, hardware debugging, software development, and IT infrastructure management. Practical problem-solving: I focus on understanding the problem, identifying root causes, and delivering effective solutions. End-to-end experience: From power supply design and manufacturing support to website development and cloud deployment, I understand the importance of reliable systems. Professional communication: I value clear expectations, honest progress updates, and dependable delivery. I started freelancing in 2011 and have worked with businesses of different sizes, helping them solve technical challenges and improve their operations. Whether you need help with power supply troubleshooting, electronic hardware failure analysis, circuit design review, WordPress development, API integration, or AWS server management, I am ready to discuss your project. Let's work together to find the right solution for your business.