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20 USD / hourWelcome to my Freelancer profile! I am a professional Electronics Engineer specializing in PCB design, circuit design, power electronics , IoT, firmware development, and embedded systems. Expertise PCB Design 1.Custom PCB Design β Single-layer, multi-layer, high-speed PCB layouts. 3.Power Electronics PCB β battery management, motor controllers,audio player PCB Software: OrCAD, PADS, Altium, Circuit Design & Development 1. Analog & Digital Circuits β Amplifiers, filters, logic gates, microcontrollers. 2.Power Electronics β DC-DC converters, inverters, rectifiers, motor drivers. audio player device 3.IoT Hardware β ESP32, STM32, GSM, LoRa, Zigbee. 4.Industrial & Consumer Electronics β Smart automation, sensor integration. Firmware & Software Development 1.Embedded Systems β Microcontroller coding, firmware optimization. 2.Wireless Communication β UART, I2C, SPI, CAN, GSM, BLE, LoRa. Manufacture we also offer manufacturing services, including material procurement, PCB manufacturing, SMT chip mounting processing, assembly and testing, packaging, and delivery. We have a comprehensive supply chain management system, stable partnerships with numerous high-quality material suppliers.Hire timl42
20 USD / hourCommitted to offering EnglishβChinese (Mandarin) translation/proofreading services only! CATTI-Certified Translator, CATTI (China Accreditation Test for Translators and Interpreters) is the most authoritative translation and interpretation proficiency accreditation test in China. .Hire Tinaxu
30 USD / hourI am a seasoned software engineer with a proven track record of delivering cutting-edge, user-centric digital solutions for startups, enterprises, and global brands. My work spans the entire software development lifecycle β from ideation and architecture to deployment and optimization β with a focus on modern web, mobile, and AI-driven applications. Over the years, Iβve mastered the art of blending aesthetics, performance, and scalability, ensuring every project I touch not only meets technical requirements but also drives measurable business growth. πΉ My Core Expertise Web Development (Frontend & Backend) Modern JavaScript frameworks: React.js, Vue.js, Next.js Backend mastery: Node.js, Django, FastAPI, Laravel Styling & UI: Tailwind CSS, Material UI, custom component libraries REST & GraphQL APIs, real-time applications, PWA development Mobile Development Cross-platform excellence: React Native, Expo, Flutter High-performance native integrations Pixel-perfect, responsive mobile UI/UX Artificial Intelligence & Machine Learning Natural Language Processing (NLP), computer vision, predictive modeling Custom model training & deployment (TensorFlow, PyTorch, scikit-learn) GPT, Vertex AI, OpenAI API integrations for chatbots, automation & intelligent decision-making Data pipelines, analytics dashboards, AI-powered automation Cloud & DevOps AWS, GCP, Azure deployment & scaling Docker, Kubernetes, CI/CD pipelines, serverless architectures PostgreSQL, MySQL, MongoDB, Firebase πΌ Why Clients Choose Me Proven Delivery: Successfully led 20+ full-scale projects from concept to production. Business-Driven Mindset: I translate technical complexity into real-world business outcomes. Scalable Solutions: Architected systems that support millions of users without compromising performance. Transparent Communication: Clear, proactive, and client-focused at every stage. Whether youβre launching a high-growth SaaS platform, building an AI-powered mobile app, or modernizing your digital ecosystem, I bring a unique blend of deep technical expertise and strategic thinking to turn complex visions into flawless reality.Hire xuezhe315
30 HKD / hourMy product design career began in 2008. Prior to that, I worked for a company primarily serving South Korea's three major telecom operators, SKT, KT, and LG U+, as well as Brazil's Intelbras. At that company, I was responsible for reviewing client products and optimizing designs to better suit mass production and reduce manufacturing costs. I also provided product development services to other OEM clients, taking full responsibility for early-stage product quality inspection specifications, mold review, new process development, component manufacturing, technical requirements, and cost optimization. Some of the client projects I led have reached production volumes of millions of units (these projects have been in production for many years). I have applied for one invention patent, several utility model patents, and design patents. Additionally, I worked in mechanical design at a medical company whose main product was extracorporeal shock wave lithotripsy (ESWL) (primarily used to treat urinary tract stones). My product design experience covers communication network equipment, smart home devices, 3C digital products, and medical devices. With over 15 years of product design experience, I am confident I can meet your needs. I would be extremely grateful if you would choose me.Hire wick63807"\t\t\t\t"
20 GBP / hourProficient in programming languages such as C++and Python, with experience in full stack development projectsHire FangzhouHe
35 USD / hourHi everyone, I have 12+ years of experience as a PCB designer, PCB production manager and salesman at READA PCB Technology Co., LTD in Shenzhen, China. Excellent PCB design skills and firmware development using embedded C and python. Rich experience in handling everything from concept to end products. My expertise and skills: 1. schematic and PCB design(Altium Designer, Eagle, Allegro, Circuit Studio, KICAD and EasyEda) β various kinds of Arduino and Raspberry Pi compatible HAT and breakout board β Quectel's GSM/GPRS/LTE modem β Battery Management System circuit design β ESP8266, ESP32WROMM/WROVER, nRF52832 and nRF52840 β USB2.0/3.0/3.1 hub design β RF design and high-speed signal layout design β FPGA board with DDR2/DDR3/DDR4 β IoT sensors β ublox neo6m, ublox neo8m GPS module 2. Manufacturing PCB production and PCBA and Component sourcing from a local company located in Shenzhen, China 3. Ordering PCB&PCBA from JLCPCB, SEEED STUDIO, and PCBWAY 4. Firmware Development β Arduino programming in Arduino IDE and Visual Studio Code β Raspberry Pi programming in PyCharm β ARM chip programming in Atmel Studio, Zerynth IDE and Keil β PIC chip programming in MPLAB Please contact me if you want to bring your ideas in the electronics field to fruition. I will provide the best design, high quality, cost-effective production price, and fast delivery. ThanksHire TingWang250617
20 USD / hourHello there, My name is Wang. I am a native Chinese speaker based in Nanjing, Jiangsu, China. ------------------------------------------------------------------------------------------------------- CATTI (China Accreditation Test for Translators and Interpreters) Certified B.A. English Language and Literature | Nanjing Normal University B.A Civil Engineering | Southeast University ------------------------------------------------------------------------------------------------------- I bring over 20 years of experience in English and Chinese translation, enriched by extensive periods living abroad and working on international projects. ------------------------------------------------------------------------------------------------------- Specializing in the following areas of translation: β Website content β Medical (reports and pharmacologyοΌ β Blockchains β Business plans and Market promotion β IT such as UI, network security, credentials β Manuals or specifications β Financial reports and credit reports β Legal contracts or documents β Real estate and property management β Technology engineering, such as power and weak currents, HACV, firefighting, β EHS (environment, health and security) β Certificates such as driving licenses, business licenses, birth certificates, etc. β Literature and other liberal arts areas My top priority is to deliver accurate, natural, and high-quality translations. -------------------------------------------------------------------------------------------------- Started my English/Chinese content writer from 2000. Have accumulated massive knowledge and gained extensive experience on diversified fields, genres and writing styles. My areas of expertise include but not limited to: article writing, rewriting, web content, blogs, essays, research writing, and social media content. -------------------------------------------------------------------------------------------------- Civil engineer and national cost engineer Lived abroad and worked on projects for 20+ years Good management skills of projects, facility and EHS Experience in product and manufacturer sourcing Supply chain management and project management OEM service and customize new productHire willdo2054
20 HKD / hourHello! This is Tina from Guangzhou China. Iβm a friendly and responsible person who really loves trying new things. I offer reliable and friendly translation services for travelers, factory tours, and trade fairs. Let me help you communicate with ease and make the most of your time here. What I Offer: Travel Support: Navigate the city, shopping, ask for directions, or chat with locals. Product Sourcing: Help with find the real factories, communicate with the factories, handle the shipment and everything you need for your business. Trade / Factory Visits: Accompany with you to the trades / Markets / factories and help with negociation. Whether youre exploring the city, visiting a factory, or doing business at a fair, Im here to help you connect and communicate effortlessly. Think of me as your reliable, easy-going partner. Let's talk and see how I can help!Hire tinab9
50 USD / hourEx-SAP Director | China Market Entry & Supply Chain Architect | Fractional Executive Iβm Mason, your ultimate Cross-border Partner. Whether you need to scale a brand from 0-to-1 in China, build supply chain resilience, conduct deep-dive corporate due diligence, or source an elite tech team, you are in the right place. With 20+ years of expertise bridging global strategy with Chinaβs industrial realityβincluding serving as a Regional Director at SAP and holding a Master's in Service Design (IPSD) from HKUβI provide international clients with "ground-floor" insights, institutional-grade precision, and high-fidelity execution. π Why Top Firms & Global Brands Partner With Me β Tier-1 Rigor: Project collaborator for McKinsey & Nielsen, delivering evidence-based intelligence and "Zero-AI Hallucination" insights. β 0-to-1 Market Leadership: Spearheaded the full-stack operations for Nest Designs (Canadian), scaling it to the #1 category position on Tmall. β High-Trust Vendor Verification: I transform traditional sourcing into resilience engineering, bypassing middlemen to locate and verify hidden OEM factories. β Advanced Corporate Intelligence: Leveraging proprietary databases to perform exhaustive credit penetration and risk tracing to safeguard your investments. β Ecosystem & IP Mastery: Achieved #1 organic ranking on RedNote (Xiaohongshu) for a luxury brand (Unfurl) in 3 months; personally manage a 30K+ follower WeChat IP matrix generating 500K+ RMB. β Executive-Grade Execution: Integrity. Precision. Strategic Value. β¨ My Core Services (Fractional Leadership & Full-Stack Operations) π Corporate Intelligence & Supply Chain Resilience π McKinsey-standard industry research & geopolitical risk assessment π High-trust vendor ecosystem building, deep-dive due diligence, and factory audits π Proprietary credit penetration, C-suite tracing, and OEM background verification π China Market Entry & Digital Growth π Fractional Leadership for China GTM strategy and brand localization π Platform Mastery: Xiaohongshu (RedNote), WeChat Ecosystem, Tmall, Douyin π High-net-worth (HNW) lead generation, private traffic conversion, and SEO-focused content strategy π Remote Tech Team Sourcing & Management π Translating complex business visions into clear technical execution roadmaps π Sourcing, vetting, and managing elite, cost-effective Chinese engineering teams for global firms (e.g., North American Commercial Real Estate Platforms)Hire masonwangch
10 USD / hourHello! I am an experienced software developer skilled in creating desktop, mobile, and web applications. I offer high-quality solutions at an affordable price to meet your needs.Hire YujiaoMa
