Wireless Engineers para contratar
Mostrando 1716 resultados
Freelancers patrocinados
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Contratar leonidye
I am an RF and electronics design engineer from Ukraine with strong experience in antenna design, RF PCB layout, and general electronic hardware development. I focus on practical, manufacturable designs with predictable performance. Core expertise: - RF PCB layout (impedance control, grounding, isolation, EMI...I am an RF and electronics design engineer from Ukraine with strong experience in antenna design, RF PCB layout, and general electronic hardware development. I focus on practical, manufacturable designs with predictable performance. Core expertise: - RF PCB layout (impedance control, grounding, isolation, EMI reduction) - High-speed and mixed-signal PCB design (impedance and length matching) - Schematic & PCB layout and BOM for production-ready hardware - Power supply and filtering design - Antenna design and tuning (GNSS, Wi-Fi, ISM bands...) Typical work: - Wi-Fi, BLE, LoRa, and custom RF hardware - Compact and embedded antennas - Multilayer PCBs optimized for performance and cost - Design review, layout correction, and RF/EMI troubleshooting Tools: - RF design and simulation tools (ADS, CST, and HFSS) - PCB design tools (Altium, KiCAD, OrCAD, PADS, and EasyEDA) - Others (NI Multisim, Proteus, Matlab...) Thanks for visiting my profile. menos -
Contratar jonasdedzo
I am a Senior Full-Stack Developer with 10+ years of experience building modern, scalable, and high-performance web and mobile applications. I specialize in React.js, Next.js, Node.js, TypeScript, Python, PHP, Laravel, .NET, and API development, creating clean, responsive, and user-friendly digital solutions. My...I am a Senior Full-Stack Developer with 10+ years of experience building modern, scalable, and high-performance web and mobile applications. I specialize in React.js, Next.js, Node.js, TypeScript, Python, PHP, Laravel, .NET, and API development, creating clean, responsive, and user-friendly digital solutions. My expertise includes: ✅ Full-Stack Web Development ✅ Mobile App Development (React Native, Flutter, Android, iOS) ✅ AI Integration (OpenAI API, ChatGPT, LLM, AI Automation, AI Agents) ✅ SaaS Platforms & Business Applications ✅ REST API & Third-Party Integrations ✅ Database Design (PostgreSQL, MySQL, MongoDB, Redis) ✅ Cloud Deployment (AWS, Azure, Docker, VPS) I focus on delivering high-quality code, reliable solutions, and long-term value for clients. I can handle projects from idea to deployment, including architecture, development, testing, and maintenance. My goal is to build powerful, secure, and scalable software that helps businesses grow. menos -
Contratar MuhammadUzair16
MuhammadUzair16 MuhammadUzair16
$50 USD / hora
Embedded Systems, IoT & Edge AI Software ArchitectPakistanI design and build reliable embedded, IoT, and connected-device software — from firmware, RTOS, microcontrollers, and BLE communication to mobile apps, cloud integration, and AI/ML on edge devices. With 16+ years of experience in software development and embedded systems, I help startups, product teams, and...I design and build reliable embedded, IoT, and connected-device software — from firmware, RTOS, microcontrollers, and BLE communication to mobile apps, cloud integration, and AI/ML on edge devices. With 16+ years of experience in software development and embedded systems, I help startups, product teams, and engineering companies turn complex hardware/software requirements into stable, scalable, production-ready systems. ✅ Core Expertise 🔌 Embedded Firmware & RTOS C/C++ firmware development for microcontrollers and embedded platforms RTOS-based applications, task scheduling, memory optimization, and performance tuning Device drivers, sensors, UART, SPI, I2C, CAN, and hardware bring-up Firmware debugging, refactoring, reliability improvement, and performance optimization 📡 IoT, Bluetooth/BLE & Connected Devices BLE-enabled products, device pairing, GATT communication, and mobile-device connectivity IoT gateways, sensor networks, telemetry, device provisioning, and remote monitoring MQTT, REST APIs, wireless communication, cloud connectivity, and secure device workflows 📱 Mobile Apps for Hardware Products Android and iOS apps for device control, monitoring, configuration, and diagnostics Cross-platform mobile apps for BLE, Wi-Fi, and IoT-enabled products Real-time dashboards, alerts, synchronization, and hardware-software integration 🤖 Edge AI, AI/ML & Data Systems AI/ML workflows for embedded and resource-constrained systems Sensor analytics, signal processing, anomaly detection, and predictive logic Python-based automation, testing tools, engineering utilities, and data workflows 🏗 Software Architecture & Product Engineering End-to-end system architecture across hardware, firmware, mobile, backend, and cloud Clean, maintainable, testable code built for long-term product growth Technical planning, code review, debugging, documentation, and project rescue work ✅ What I Can Build IoT devices with firmware, mobile app, and cloud integration BLE-enabled products and companion mobile apps Industrial controllers, sensor systems, data loggers, and gateways RTOS-based embedded applications Edge AI systems and embedded analytics Custom firmware, drivers, protocols, dashboards, and automation tools Legacy embedded software modernization and performance optimization ✅ Why Work With Me 16+ years of hands-on engineering experience Strong understanding of both low-level embedded systems and high-level software architecture Ability to work across firmware, hardware integration, mobile apps, APIs, and cloud workflows Clear communication, realistic planning, and precise execution Focus on reliability, maintainability, performance, and production-ready delivery For projects involving embedded systems, firmware, IoT, BLE, mobile apps, device communication, or AI on edge devices, I can help you design and build it correctly from the start. menos -
Contratar alishba438
I am an experienced Embedded Systems and IoT Developer with a strong background in Python and C++ programming, specializing in end-to-end development of automation and connected device solutions. I have hands-on expertise working with a wide range of microcontrollers and platforms including Arduino, ESP32, Nordic (nRF...I am an experienced Embedded Systems and IoT Developer with a strong background in Python and C++ programming, specializing in end-to-end development of automation and connected device solutions. I have hands-on expertise working with a wide range of microcontrollers and platforms including Arduino, ESP32, Nordic (nRF series), PIC, and Atmel (AVR, SAM). My skill set spans both hardware and software, allowing me to take projects from concept to prototype and production. This includes schematic design, PCB layout (using tools like Altium, Eagle, KiCad, and EasyEDA), firmware development, and integration of sensors and communication protocols like BLE, Wi-Fi, LoRa, Zigbee, UART, I2C, and SPI. I focus on building efficient, low-power, and reliable solutions for home automation, industrial control, wireless communication, and IoT applications. Whether it's developing custom firmware, designing PCBs, or creating scalable IoT systems, I deliver high-quality and well-documented results. menos -
Contratar kylehurtmcp
kylehurtmcp kylehurtmcp
$50 USD / hora
Senior Infrastructure, BI and Network ConsultantUnited KingdomI am a senior IT and cybersecurity consultant with over 15 years’ experience delivering enterprise-scale technology, service delivery, and digital transformation across multi-site and international organisations. I hold CCIE, CISSP, and ISO 27001 certifications and operate confidently at senior management and board...I am a senior IT and cybersecurity consultant with over 15 years’ experience delivering enterprise-scale technology, service delivery, and digital transformation across multi-site and international organisations. I hold CCIE, CISSP, and ISO 27001 certifications and operate confidently at senior management and board level, with accountability for operational resilience, cybersecurity posture, regulatory compliance, and strategic technology investment. I specialise in helping organisations design, secure, and modernise their IT environments in a way that is practical, commercially grounded, and aligned to real business objectives. My work spans secure network architecture, cloud and hybrid infrastructure, custom software solutions, data and business intelligence platforms, and ISO 27001 readiness and governance. I bring a consultancy mindset and a strong delivery focus, with a proven track record of improving operational maturity, embedding governance and IT service management disciplines, and leading complex change programmes while maintaining service stability and stakeholder confidence. Clients value my ability to translate complex technical challenges into clear, actionable solutions that balance security, performance, and cost. Alongside consulting, I run my own IT services business. This gives me first-hand insight into the commercial pressures facing organisations and ensures my recommendations are grounded in operational reality—not theory. I am a pragmatic, credible, and collaborative partner, capable of operating under pressure, influencing across functions, and delivering measurable improvement in fast-moving and regulated environments. menos -
Contratar touhidecevw
touhidecevw touhidecevw
$60 USD / hora
Network & System Specialist|CCNP|Fortinet|RHCE|CEHBangladesh✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete...✅As a highly skilled and experienced network and system administrator with over 11 years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete solutions for designing, configuring, automating, and managing network and system projects. My proficiency in using simulation software such as Packet Tracer and GNS3, as well as real-life network and system devices, make me a valuable asset for any project. My few hands-on experiences is : ✅Network Design by MS Visio, Cisco packet tracer, GNS3, and EVE-NG ✅Netacad CCNA and CCNP packet tracer Labs activities, projects design and solution ✅Cisco routers, switches, FTD, FMC, and ASA firewalls. ✅WatchGuard, Palo Alto, CheckPoint Firewall, SonicWall, Fortigate, pfSense, OPNsense, Huawei firewalls. ✅Unifi Enterprise Fortress Gateway, Ubiquiti UDM Pro, Unifi Cloudkey, USG UniFi Firewall , Security Gateway, Switch, and AP devices ✅ Netgear, Huawei, Aruba switch, DrayTek router, TP-Link and others vendor wireless router configurations. ✅Cisco, Tp-Link, Aruba, Fortinet, Ubiquiti, Planet, Huwei switch configurations. ✅MikroTik Routers and switch configuration ✅ SNMP monitoring configuration: Observium, Librenms, Cacti, Nagios core ✅ Cloud Administrator: Azure, AMAZON AWS , Google GCP, OVH Cloud and Digital Ocean, Contabo ✅Hyper-V, VMware ESXi, VMware Workstation, VirtualBox, KVM, and Proxmox. ✅Ubuntu, Red Hat, CentOS, Debian, openSUSE, and Kali Linux distributions. ✅Windows server administration , Active Directory management, Exchange Server administration, DNS configuration ✅Servers: HP Proliant Servers, Dell/EMC Servers, IBM ✅VLSM/subnetting of small to large enterprises ✅VLANs, Inter-VLAN routing, VTP, CDP, Ether-Channel(LACP, PAGP) ✅DHCP, NAT/PAT configuration and IP helper address ✅static and Dynamic Routing protocols (RIP, OSPF, EIGRP, BGP) configuration ✅Layer-3 Redudent/backup links Using HSRP, VRRP ✅Port security, ACL( access list) configuration ✅Network troubleshooting and optimization ✅VPN Configuration Expert (GRE , SSL, IPSEC, PPTP, OpenVPN & DMVPN) ✅Network automation script for any Cisco and FortiGate devices using python ✅Overlay Networks VPN Expertise: Proficient in configuring and managing various overlay network VPNs, including ZeroTier, Tailscale, WireGuard, SoftEther VPN, Netbird , Netmaker, OpenVPN Cloud, I, Twingate and PeerVPN for secure, scalable, and decentralized networking, enabling seamless remote access, team collaboration, and encrypted communications across distributed systems. ✅Cisco Duo: MFA, 2FA, SSO, Identity Security Integration, Windows Logon, RDP, Microsoft AD, VPN Authentication. menos -
Contratar acsaneibogdan97
acsaneibogdan97 acsaneibogdan97
$55 USD / hora
Sr. Network & Security Engineer| CCNP, NSE5, PCNSERomaniaCertified CCNP | NSE5 | PCNSE with 4+ years of experience securing enterprise networks. I specialize in firewalls, VPNs, and network troubleshooting with Cisco, Fortinet, and Palo Alto – ensuring uptime, performance, and security. How I Can Help You: • Secure your network against threats using robust firewall and VPN...Certified CCNP | NSE5 | PCNSE with 4+ years of experience securing enterprise networks. I specialize in firewalls, VPNs, and network troubleshooting with Cisco, Fortinet, and Palo Alto – ensuring uptime, performance, and security. How I Can Help You: • Secure your network against threats using robust firewall and VPN solutions • Optimize network performance for critical business applications • Implement resilient network architectures with redundancy and failover • Troubleshoot and resolve network outages rapidly to minimize downtime. Core Skills: • VPNs: IPsec, SSL, L2TP, PPTP, OpenVPN (secure remote access) • Routing & Switching: BGP, OSPF, VLANs, EtherChannel, HSRP, VRRP, STP, VTP • Firewalls & Security: Cisco ASA, Firepower, Fortigate, Palo Alto, pfSense, SonicWall, Ubiquiti, OPNSense • Wireless: Cisco, Ubiquiti, Aruba, Fortinet, and Ruckus APs Certifications: • Cisco: CCNP Enterprise, CCNP Security, CCNA CyberOps, CCNA • Fortinet: NSE4, NSE5 • Palo Alto: PCNSA, PCNSE • Juniper: JCIA • Aruba: ACMA (Mobility), ACSA (Switching) Hands-On Experience: • Cisco: ISR 1000, 4000, ASR 1000, Nexus 9200, 9300, 9500, SG- 300, SG-350, SG-500 ASA 5505, 5506-x • Cisco Umbrella, Meraki, FMC, FTD, Duo, AMP for Networks • Wireless Solutions: Cisco 9100 series APs, Ubiquiti APs, Aruba 635 APs, Fortinet and Ruckus APs for enterprise Wi-Fi solutions • Palo Alto: PA-400 series, PA-800 series, PA-1400 series, PA-VM, Panorama • Fortigate: 40F, 60F, 80F, 100F. • Juniper: EX2300, EX3400, EX4300 • HPE: Procurve 2650 and 2910 • Aruba: 8325, 6200F • SonicWall • pfSense, OPNSense, CheckPoint, TP-Link, Fritzbox Let’s secure and optimize your network together. Send me a message – I would love to help you! menos -
Contratar aliabidlodhi74
PCB Design Expert | Embedded & IoT firmware | Electronics R&D I help startups and product teams turn ideas into reliable, production-ready electronics. I hold an MSc in Electrical Engineering and have 11+ years of experience in PCB design, embedded systems, and IoT hardware development. I’ve completed 500+ projects...PCB Design Expert | Embedded & IoT firmware | Electronics R&D I help startups and product teams turn ideas into reliable, production-ready electronics. I hold an MSc in Electrical Engineering and have 11+ years of experience in PCB design, embedded systems, and IoT hardware development. I’ve completed 500+ projects ranging from early-stage prototypes to fully manufacturing-ready products. I also have access to a professional fabrication and testing lab at the University of Oulu (Finland), which allows faster prototyping, validation, and hardware debugging. What I do: 1. PCB design and PCB layout * Schematic design and smart component selection * 2/4/6+ layer PCBs, mixed-signal and power electronics * Signal integrity and EMI-conscious routing * Manufacturing outputs: Gerbers/ODB++, BOM, Pick and Place, assembly documentation * DFM/DFMA optimization for JLCPCB, PCBWay, and contract manufacturers 2. Embedded systems and firmware development * ESP32, STM32, Arduino, PIC, Raspberry Pi * Embedded C/C++ and Python * Interfaces: UART, SPI, I2C, CAN, ADC, PWM * Low-power firmware, debugging, and performance tuning 3. IoT hardware and wireless connectivity * WiFi, BLE, LoRa, Zigbee, MQTT, NB-IoT, LTE-M * Sensor integration, cloud connectivity, remote monitoring and control 4. Prototyping and hardware validation * Hardware bring-up and oscilloscope-based debugging * Power testing and real-world validation * Rapid iteration before mass production What you can expect: * Clear milestones and proactive communication * Clean documentation and organized deliverables * Designs optimized for performance, cost, power efficiency, and manufacturability If you need an engineer who can manage both hardware and firmware and take your project from concept to working prototype and production, send your requirements and let’s get started. Regards M Ali Abid menos -
Contratar abdurRafiqM
I am an experienced Electrical and electronics Engineer specialized in PCB Design, Circuit Design, Circuit simulation and Professional Consultation. I am well experienced in the use of tools like ALTIUM Designer, KICAD, EASYEDA, Multisim, LTSPICE etc. I deliver my work to the taste of my client and as early as...I am an experienced Electrical and electronics Engineer specialized in PCB Design, Circuit Design, Circuit simulation and Professional Consultation. I am well experienced in the use of tools like ALTIUM Designer, KICAD, EASYEDA, Multisim, LTSPICE etc. I deliver my work to the taste of my client and as early as needed Here is a link to my portfolio https://sites.google.com/view/abdur-rafiqmorenikeji/home menos -
Contratar MikroStar
Electrical and Electronics Design Engineer. I have expertise in Embedded system design, firmware development, PCB layout and hardware prototyping . Embedded System Design, Innovation, Proof of concept prototyping, Product Design. I have more than 7 years of experience in developing custom electronics. I can take...Electrical and Electronics Design Engineer. I have expertise in Embedded system design, firmware development, PCB layout and hardware prototyping . Embedded System Design, Innovation, Proof of concept prototyping, Product Design. I have more than 7 years of experience in developing custom electronics. I can take your project from concept to completion. Furthermore i have high level of design expertise in following technologies: RF, Bluetooth, BLE, Zigbee, wireless, GSM, 3G, WIFI, GPS, NFC, RFID, Energy harvesting, MEMS , datalogging and IOT. menos
