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Near field communication (NFC) is a low-power form of wireless communication protocols that enable two electronic devices to establish communication without required authentication by bringing them within a close range of each other (i.e. 4 cm).
Whether you have your own NFC projects already built, or need some design expertise, you can get free quotes for affordable an RF Engineer on Arrow-Freelancer.
Post your project for free and connect with skilled freelancers ready to start today. Compare bids, ratings and portfolios, and only pay when you're happy with the work.
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8.2
8.2
98%

islamabad, Pakistan
$40 USD per hour
Hello Everyone, I am Faisal Manzoor Hussain, professional full stack developer holding experience in website development, desktop development and hybrid application development with proven success. I'm here to help businesses all over the world to grow their online presence through mobile apps and website development services. My target is to help these companies automate their complex business logic. I also hold specialization in developing APIs and integrate almost all sorts of APIs in your application. I also automate business processes to help your business run smoothly. Why should you hire me? Reasons that sound logical in hiring me include ● 99% Completion rate ● Top 3% in Freelancer.com directory ● Lower hourly rate for long term projects ● Life time free bug fixing guarantee Coming to our array of services, I offer my customers with: ● Mobile Responsive Website Design, Development & Optimization. ● Graphics Design & 3D Logo Design & Brand Identity. ● Android App Development (Native & Hybrid) ● Wix Studio, Google Apps Script, SalesForce, Xero, AMP, GSO and Progressive Web Applications Development ● Web Services (JSON, XML, SDK, SOAP, SAML, SSO) ● Website Maintenance (Regular Updates) ● Cloud Formation, JotForm.com, Bubble.io, klaviyo.com Major Web API Integrations are namely- - Google (Maps, Drive, Analytics, My Business, Tag Manager, Gmail) - Payment Gateways (PayPal, Square, Stripe + Connect, PayTM, Skrill, 2Checkout, Paynet, BrainTree). - Shipping Platforms (Fedex, Royal Mail) - SMS Gateway (Twilio, BrainsSMS, Clickatell) - Social (Facebook, Instagram, Twitter, LinkedIn, YouTube, Telegram) - AWS, GCP, Big Data, Big Query, AI, and Data Engineering - HealthCare (Stafferlink, Deputy) - Smoobu, Remote lock, MQTT, Web Sockets, - NFC, RFID, Sensors, Fingerprint, and QR processing, Aurdino, Power BI - Blockchain, Smart Contracts, Ethereum, Binance Smart Chain, NFT, Data Mining - Microcontrollers, PLC, Electronics, Robotics process automation, AI Automation Tools, MVC and CMS that I'm are compatible working with are: 1. OpenAI, Machine Learning, Chat GPT, Tensorflow 2. Codeigniter, Laravel 3. AngularJS 4. Wix 5. Squarespace 6. Shopify 7. Bootstrap, Foundation 8. Intel XDK Android Application Development 9. Ethr.js Solidity

5.0
5.0
100%

Yogyakarta, Indonesia
$30 USD per hour
Professional Embedded System Engineer with 11 years of experience on hardware and embedded software development. PCB Tools : - Altium - KiCAD - Eagle - EasyEDA Microcontroller : - AVR - STM32 - ESP8266 / ESP32 - NXP - Texas Instrument - Arduino - Raspberry / Banana / Orange Pi SBC Wireless Communication - NFC (MF classic, desfire, ultralight, NTAG424, NTAG213, NTAG21x, ICODE) implemented on payment, membership, access control with various NFC reader on desktop such as ACR122U, ACR120U, castle tech QP8000 to android custom reader - RFID short / long range - WiFi, Bluetooth, LoRa Wired Communication - UART, SPI, I2C, CAN, LIN, RS232, RS485 Protocol Data - MODBUS RTU / ASCII, CANOpen - HTTP, MQTT, TCP, UDP

9.8
9.8
98%

Rajkot, India
$7 USD per hour
## 18+ Years of Experience | AI-Powered Development | Top on Freelancer Hi there! I’m Ghanshyam, and I lead the team here at Keshav Infotech. Our journey started in 2006. Back then, my partner Samir and I had just three computers (one was borrowed!) and a tiny workspace. Today, we have grown into a team of 75+ experts working from our 5,000-sq-ft office. We aren't just "tech guys"—we are "techpreneurs" who love building great products. ### Why Work With Us? We combine 18 years of deep experience with the speed of modern AI. => Faster Delivery: We use the latest AI tools (Cursor, Claude, ChatGPT) to write and check code faster. => Better Pricing: By using AI and ready-made assets, we save time on manual tasks. We pass those savings on to you. => Proven Quality: We are in the Top Rank of the Freelancer.com community with a very high repeat hire rate. ### What We Do Best - Mobile Apps: iOS, Android, and Flutter. - Specialized Apps: BLE, IoT, NFC, and Hardware integration. - Game Development: High-quality Unity Games. - Web Development: Laravel, Node.js, React, Vue, WordPress, and Shopify. - Design: Modern UI/UX Design for apps and websites. ### How We Work (Step-by-Step) We follow a clear process so there are no surprises: 1. Scope: We create a detailed study document of your requirements. 2. Planning: We build wireframes and data flow diagrams. 3. Design: We create the system design and all app screens. 4. Testing Plan: We define test cases for all devices. 5. Development: Our team starts the programming phase. 6. Review: Regular updates and reviews with you. 7. Launch: Final testing, bug fixing, and deployment to your server. ### Availability & Communication - Response Time: Usually within 12 hours. - Working Days: Monday to Saturday. - Working Hours: 10:00 AM to 8:00 PM. Our Goal: We aren’t looking for a "one-time project." We want to build a long-term business relationship with you. We guarantee our work and won't stop until you are 100% happy. Ready to start? Let’s chat about your project! Best Regards, Ghanshyam & Samir Keshav Infotech

9.2
9.2
99%

Daska, Pakistan
$50 USD per hour
Live Experts LLC is a multidisciplinary technology company specializing in Engineering, AI/ML, Embedded Systems, IoT, and Automation Solutions for startups, businesses, and enterprises worldwide. With over a decade of technical delivery experience and hundreds of successfully completed projects, we help clients transform complex ideas into scalable, production-ready solutions that solve real business and operational problems. Our strength comes from combining software, AI, automation, electronics, and engineering expertise under one team. This allows us to handle both digital systems and real-world hardware projects with practical implementation experience. Our expertise includes: • Artificial Intelligence (AI) & Machine Learning (ML) • Generative AI & Conversational AI • AI Chatbots & AI Agents • Computer Vision & OCR Systems • Predictive Analytics & Data Intelligence • Workflow Automation & AI Integration • Embedded Systems & IoT Solutions • Arduino, ESP32 & Raspberry Pi Development • PLC, SCADA & Industrial Automation • Electrical & Mechanical Engineering Support • Sensor Integration & Smart Monitoring Systems • AI-Powered Dashboards & Business Platforms • Cloud APIs & System Integrations • Automation & Control Systems We work with modern technologies including: Python, OpenAI, ChatGPT, TensorFlow, OpenCV, Node.js, React, FastAPI, PostgreSQL, AWS, Docker, MATLAB, Arduino, ESP32, Raspberry Pi, PLC systems, and industrial automation platforms. What makes us different is our ability to bridge the gap between: AI + Automation + Embedded Systems + Engineering Many companies can build software. Others can build electronics. Very few can combine AI, automation, hardware, and engineering into complete intelligent systems that work in real business environments. We have experience working across: • Industrial Automation • Healthcare • Logistics & Fleet Systems • Manufacturing • Finance & Trading Systems • Smart Monitoring Systems • Operational Dashboards • IoT & Connected Devices • AI Business Solutions • Intelligent Automation Platforms Our development approach focuses on: • practical implementation • scalable architecture • clean UI/UX • reliable integrations • business-focused solutions • long-term maintainability • clear communication • premium execution quality Whether you need: • an AI-powered platform • an embedded IoT device • industrial automation • computer vision systems • AI automation workflows • predictive analytics dashboards • AI chatbots • sensor-based monitoring systems • electrical/mechanical engineering support • or a complete intelligent system Live Experts can help design, develop, and deploy reliable solutions tailored to your business goals. We believe in building long-term partnerships and delivering systems that create measurable operational and business value.

8.1
8.1
95%

Lahore, Pakistan
$40 USD per hour
I am an Electronics and Electrical Design Engineer with the areas of expertise in Embedded System, product prototyping, PCB design and layout and firmware development for systems. I have proficiency in following software tools: 1. Altium Designer 2. Cadence ORCAD 3. KICAD 4. MATLAB 5. Mikro C (for all controllers) 6. Arduino IDE 7. Raspberry pi 8. Eagle CAD 9. KICAD 10.Proteus Design Suite I also have experience in design of IoTs. I have almost 8 years of experience in development of products including the custom electronics. I can take your project from concept to finished product. I am also experienced in working with a number of communication devices like NFC, GPS WifI, Ethernet, Zigbee, GSM and others.

7.5
7.5
88%

Çankaya, Turkey
$30 USD per hour
DearSir, My background is related with: -Digital Motor Control -Analog Design -Electronic Design -PowerElectronics -Renewable energy -PCB design -Embedded system -Matlab -Simulation of hardware For each concept descriptions are as follows: Digital Motor Control: -3-phase induction motor vector control drive -Flux estimation algoritm generation -DSP(TMS320) implementation on motor drive -Low speed application -Torque and speed loop generation -Control algoritms -BLDC motor -Step motor -DC motor Analog design -Low power distribution -Noissless special opamp based analog circuits -Analog filters -Orcad simulation of several circuits Electronic Design -RF transmitter and receiver -Bluetooh reade rand transmitter -Magneticreader PowerElectronics -Implementation motor drive -AC/DC converter -DC-DC converter -Battery charger -Solar inverter -Renewable Energy -Uninterruptle power supplies PCB design -Schematic design by Altium -PCB design by Altium -Power board design -SMPS board design -Easyeda -CAD files of manufacturers Embedded system -ESP32,ESP8266,modules -Bluetooth and Wifi -PIC18,PIC24,PIC30 and dsPIC applications -Ardino -MSP430 -Atmel -DSP(Texas Instruments) -Renesas -STM32 -C2000 Matlab -Power Electronics simulation -Motor drive -WindEnergy -Solar Energy -Control applications Simulation of Hardware -Orcad Simulation (TI,National, LinearTech, Maximlibraries) -LTI -National -Matlab -Easyeda

7.8
7.8
92%

Charsadda, Pakistan
$25 USD per hour
I started out as an engineer, not a freelancer. Chemical engineering taught me to think in systems, where every input, reaction, and constraint has to balance before anything works. What I did not expect was how far that way of thinking would travel. Over the past 10 years, one project pulled into the next. A spreadsheet that needed automating taught me VBA. A client who needed forecasts pulled me into financial modeling. A pricing problem turned into a data science build. Each job added a tool, a method, a discipline. Bit by bit that became more than 400 skills spread across data science, web and app development, accounting and finance, civil, chemical, mechanical, and structural engineering, Excel and AI automation, VBA, coding, and design. The number is not the point. The point is what that range lets me do. When a problem sits between fields, where the finance touches the engineering, or the data feeds the automation, I do not have to hand you off to three different people. I can hold the whole picture and build it end to end. That is how a 32,255-SKU catalog, a 23-sheet investment P&L model, a 3,544-product pharmaceutical pricing engine, and a 26-region sales control tower with 1,624 formulas all came from one person. Over 50 international clients have trusted me to take a problem from a vague brief to a finished system that holds up under real use. So if your project does not fit neatly into one box, that is exactly where I do my best work. Tell me what you are trying to build, and I will tell you how I would make it work.

6.9
6.9
98%

Giza, Egypt
$50 USD per hour
Skilled in debugging, designing , optimizing real time software, with experience in openCV (image processing) and applications of deep learning related to image processing. • Micro controllers / Kits :ATMEGA (Arduino *) , Raspberry Pi, Beagle bone, RM , PIC , PowerPC,AVR , Renases.NXP-LPC812 , STM32 , Aurix TC2XX, TC8XX, Tricore • Communication buses : CAN , Ethernet , Flexray , Lin , SPI , I2C , Serial , MDB • Embedded : DMA , Multicore , MPU • IoT : Wifi , BLE, Zigbee, ESP32, GSM , Nordic • Real-Time Operating systems • Coding : C , C++, C# , .net , Python , Solidity , Blockchain I can also provide 3D printed solution and prototypes if needed. I will devote the time and effort to provide a state of the art solution expect : - Well commented software and documentation. - Support till every thing is running and you are satisfied, we also offer two weeks of testing after completion of the project with no extra cost.

8.4
8.4
89%

Indore, India
$20 USD per hour
Hi, I help businesses turn ideas into scalable web, mobile, AI, and blockchain products that are built for growth. With over 11+ years of experience and a passion for clean code, scalable systems, and solving complex challenges, I focus on building products that are reliable, modern, and built for growth. If you’ve got a project in mind, I’d be on board to help bring it to life! Core Technologies: 1. Web & Backend: React | Next.js | Node.js | Laravel | TypeScript | Python | PostgreSQL | AWS 2. Emerging Tech: AI Development | AI Integrations | Machine Learning | Generative AI | LLMs | NLP | Computer Vision | LangChain | OpenAI | Vector Databases | Web3 | Blockchain | Flutter 3. CMS & E-commerce: WordPress | WooCommerce | Shopify What I Deliver: ✔️ End-to-end development of scalable web and mobile applications ✔️ AI-powered apps, chatbots, automation tools, and recommendation systems ✔️ Custom SaaS and multi-tenant platforms for growing businesses ✔️ Modern UI/UX with responsive, user-focused design ✔️ API-first development with smooth third-party integrations (Stripe, Firebase, OpenAI, etc.) ✔️ Code audits, optimization, and technical consulting Skills at a Glance: 1. Front-End: React, Next.js, Vue, Angular, Tailwind CSS, Bootstrap, HTML5/CSS3 2. Back-End: PHP, Laravel, CodeIgniter, Node.js, NestJS, Express.js, Django, Flask 3. Databases: PostgreSQL, SQL, MySQL, MongoDB, Redis 4. AI Development: Python, TensorFlow, PyTorch, Scikit-learn, OpenAI, LangChain, Prompt Engineering, AI Chatbots, Agentic AI, Automation, Recommendation Engines, NLP, Computer Vision, RAG, Vector Databases 5. Blockchain & Web3: Solidity, Rust, Smart Contracts, Ethereum, Solana, Polygon, Web3.js, NFTs, DeFi, Crypto Wallets, Multichain, Tokenization, DApps, Public/Private/Hybrid Blockchains 6. DevOps & Cloud: AWS (EC2, S3, Lambda, RDS), Docker, GitHub Actions, Vercel, Heroku 7. APIs & Integrations: REST, GraphQL, WebSockets, Stripe, Firebase, OpenAI 8. Tools & Practices: Agile, CI/CD, TDD, Microservices, Clean Architecture Industries / Niches Served: ✔️ Healthcare & MedTech ✔️ Fintech & Banking Solutions ✔️ E-commerce & Marketplaces ✔️ Real Estate & Property Tech ✔️ Logistics & Supply Chain ✔️ SaaS & Enterprise Platforms ✔️ Education & eLearning ✔️ Travel & Hospitality ✔️ On-Demand Service Platforms ✔️ Social Networking & Community Apps ✔️ Blockchain / Web3 Products ✔️ AI Automation & Productivity Tools ✔️ Recruitment & HR Tech ✔️ Insurance & Verification Systems ✔️ Media, Content & Streaming Platforms Ready to build your next product? Let’s talk... ----------------------- #FullStackDeveloper #WebDevelopment #AppDevelopment #React #NextJS #NodeJS #Laravel #TypeScript #Python #PostgreSQL #AWS #Blockchain #AI #MachineLearning #GenerativeAI #LLM #NLP #Flutter #CMS #WordPress #Shopify #SaaS #DevOps #APIIntegration #UIUX #ResponsiveDesign #TechConsulting #CleanCode #Microservices #Startups #Fintech #HealthcareTech #Ecommerce #web3
An RF engineer is a radio frequency specialist who designs, tests, and optimizes wireless systems, antennas, and electromagnetic circuits operating across the radio spectrum. Hiring a freelance RF engineer gives you access to specialized expertise in wireless communications, antenna design, and signal integrity without the overhead of a full-time hire. From IoT product development to cellular network optimization, RF engineering freelancers solve the high-frequency design problems that generalist electrical engineers cannot.
An RF engineer works on any system that transmits or receives signals through the air or along high-frequency transmission lines. That includes cellular modems, Wi-Fi and Bluetooth modules, GPS receivers, radar systems, satellite links, and short-range IoT radios. The work spans circuit-level design, antenna engineering, simulation, prototyping, lab measurement, and regulatory compliance testing.
Commercially, this matters because RF performance determines whether a wireless product actually works in the field. A poorly matched antenna, a noisy power amplifier, or an uncontrolled spurious emission can sink a product launch, fail FCC or CE certification, or degrade user experience. A skilled RF specialist catches these issues during design rather than after manufacturing.
Freelance RF engineers handle a wide range of design and analysis tasks across the wireless stack:
Look for freelancers fluent in the standard RF engineering toolchain. Simulation and design platforms commonly include Keysight ADS, Cadence AWR Microwave Office, Ansys HFSS, CST Studio Suite, Sonnet, and Altium Designer or Cadence Allegro for RF PCB layout. MATLAB and Python are widely used for link budget calculations, channel modeling, and DSP work.
On the bench, expect familiarity with vector network analyzers, spectrum analyzers, signal generators, and real-time spectrum analyzers from manufacturers like Keysight, Rohde and Schwarz, and Anritsu. For compliance and over-the-air testing, anechoic chambers, TIS/TRP measurement setups, and CTIA test plans are routine references.
RF engineering expertise is in demand across multiple sectors:
RF engineering is a deep specialty, and résumés can mask the gap between system integrators and true circuit-level designers. Look for a degree in electrical engineering with a clear emphasis on electromagnetics, microwave engineering, or communications, plus hands-on lab experience. Strong portfolio markers include published designs, antenna patterns, smith chart matching examples, S-parameter plots, and documentation of products that have passed regulatory certification.
Useful interview questions to ask candidates:
Freelancer.com gives you direct access to a global pool of RF engineering talent spanning antenna designers, microwave specialists, cellular integration experts, and EMC consultants. You can post a project on Freelancer.com and receive competitive bids within hours from freelancers who specialize in the exact frequency band, standard, or deliverable you need. Profiles include verified skill tests, portfolio samples, ratings, and detailed client reviews so you can shortlist with confidence. Whether you need a one-off antenna tuning job or a long-term embedded wireless development engagement, Freelancer.com supports flexible project structures, secure Milestone Payments, and built-in chat for technical discussions before you award the work.
Ready to move your wireless product forward?
Hiring an RF engineer works best when you treat the project brief as a technical specification rather than a job ad. The more precisely you describe the frequency bands, standards, deliverables, and target hardware, the more accurately freelancers can scope the work and the better the bids you will receive. The process below walks you from brief to award in three structured steps.
Your project post is the single biggest determinant of bid quality. A vague brief attracts generalists, while a specific RF brief filters for engineers who actually work in your frequency band, standard, and product class. Head to the
Bids on RF projects are mini technical proposals, not just price quotes. A strong bid demonstrates that the freelancer has read your brief, understood the wireless standard involved, and thought about the failure modes specific to your frequency band. Read each proposal carefully and shortlist candidates whose technical reasoning matches the depth of the work.
The final decision combines proposal quality with profile evidence. RF engineering rewards consistency — a freelancer who has shipped multiple wireless products through certification is a safer bet than one with a single impressive project. Look for steady ratings across similar work rather than one standout review.
It depends heavily on scope. A targeted antenna tuning or matching network optimization can be completed in one to two weeks, while a full wireless product design including schematic, layout, simulation, prototype, and pre-compliance testing typically runs two to four months. Define deliverables clearly in the brief so freelancers can quote realistic timelines.
An RF engineer focuses on the analog high-frequency domain — antennas, transmission lines, amplifiers, filters, and electromagnetic behavior. A wireless or embedded engineer typically works on the digital side, integrating radio modules, writing firmware, and handling protocol stacks. Many products need both skill sets, and some experienced freelancers cover both.
Yes. Freelance RF engineers regularly take on focused engagements such as pre-compliance testing review, antenna re-tuning after a mechanical change, or troubleshooting a failing radiated emissions test. Provide your test reports, schematics, and board files in the brief so candidates can scope the work accurately.
Antenna design is a sub-discipline within RF engineering. If your project is purely about designing or tuning an antenna for a known radio, an antenna specialist is sufficient. If you also need front-end design, link analysis, or compliance support, hire a generalist RF engineer with antenna experience.
Many freelance RF engineers offer pre-compliance testing and documentation support for FCC, CE RED, ISED, and similar regimes. Final certification is typically performed by an accredited test lab, but a skilled RF freelancer can prepare your design to pass on the first attempt and represent you during lab visits.

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