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  • Zatrudnij     AhmedMFakkar
Zatrudnij     AhmedMFakkar

    AhmedMFakkar AhmedMFakkar

    Egypt $40 USD / godzinę
    Cisco Professional
    Egypt
    6.0
    71 ocen 71 ocen $40 USD na godzinę
    I'm network engineer holding Cisco CCNP certificate. I have 6 years of experience in IT networks. I am expert of network simulation softwares like Cisco Packet Tracer and GNS3 and in Data analysis using Wireshark. Also, i have strong experience in writing technical reports and summaries. My specialties: - Design and...
    I'm network engineer holding Cisco CCNP certificate. I have 6 years of experience in IT networks. I am expert of network simulation softwares like Cisco Packet Tracer and GNS3 and in Data analysis using Wireshark. Also, i have strong experience in writing technical reports and summaries. My specialties: - Design and implement medium and large scale enterprise networks. - Expertise of VPN technologies such as, OpenVPN, IPsec, L2TP, PPTP, SSL, etc. - Routing technologies RIP, OSPF, EIGRP, ISIS, BGP, etc. - Switching technologies VLANs, STP, VTP, Etherchannel, HSRP, etc. My hands-on experience, - Cisco routers (ASR 1K & 9k, 2900, 2800), Switches (Nexus 9000, Nexus 7000, Nexus 3000, CAT 6500, CAT 3750, CAT 2900, SG- 300, SG-500) and Firewalls (ASA 5505, 5506x). - Palo Alto 220, 550, 850 and 3200 and Fortigate 100E, 200E and 800E Firewalls. - Juniper Routers (M7, M10, MX 480, MX 960) and SRX (300, 500). - Huawei routers NE-40, NE5000E and Switches Quidway S2700 and S5300. - HP Switches procurve 3500 and procurve 5900. mniej
  • Zatrudnij AhmedMFakkar
  • Zatrudnij     Davelelievre
Zatrudnij     Davelelievre

    Davelelievre Davelelievre

    United Kingdom $30 USD / godzinę
    Electronic Design Engineer
    United Kingdom
    3.0
    1 ocena 1 ocena $30 USD na godzinę
    Electronic Design Now offers a complete electronic systems design and consultancy service. With small overheads I can impart a professional personal flexible service to deliver a quality reliable product at low design costs. I encompass the knowledge and resources to implement the following tasks in an innovative...
    Electronic Design Now offers a complete electronic systems design and consultancy service. With small overheads I can impart a professional personal flexible service to deliver a quality reliable product at low design costs. I encompass the knowledge and resources to implement the following tasks in an innovative and imaginative way:- Digital Design I have had vast experience in designing high speed digital electronics, microprocessor based products and gate arrays. One recent example is the design of a new Digital Multimeter with a PCI interface. Analogue Design I have been actively involved recently in providing stimulus and measurement signals between a functional test system and a target device under test. These signals have ranged from low level micro volts to hundreds of volts. I have also designed the high voltage interface on DTR cable test systems. Analogue design always presents a challenge, especially when mixed with \"noisy\" digital electronics. However I am very adapt at this task, having seen this situation many times before. PCB layout I have all the design software to produce schematic diagrams and PCB layout for complex electronic assemblies. I have performed the PCB layout on nearly all of my designs. I believe the design engineer is always the best person to implement the layout as only he has the insight and knowledge to determine the optimal part and track placement together with all the other parameters such as power planes and shields. Product Specification and Reports Having worked within an environment supplying electronic equipment to the military and blue chip companies I have a vast experience in writing engineering and marketing specifications, test schedules and strategies, evaluation studies and detailed product reports. Again I am always methodical and structured in my approach to this task. EMC Compliance Consultancy Having designed many products that have had to be CE tested or EMC compliant to a tight military specification, I am well placed to advise on any new system development. I can ensure that new products have an excellent chance of achieving EMC Compliance at first trials without endless modifications at a late stage in the development. Reverse Engineering From your old obsolete PCB where all the original design data may have been lost, I can generate the following:- New schematic diagram New PCB fabrication New items list containing all RoHS compliant components Eliminate any component that have become obsolete or are not compliant. Data sheets for all new components Test & Manufacture - Strong links with local companies to provide a full procurement, manufacture and test service. Software Development Although not trained as a software engineer, I have got the knowledge and expertise to provide test and evaluation software for all products that I design. Furthermore in some cases I can provide the actual finished application software. For example I fully developed my Race Management software (see Design History), that is extremely comprehensive and packed with innovative features. If necessary however, I have partners that I can use to provide a full capability. Interface Design - PCI, USB, Wireless, RS232, RS485, I2C, VXI, VME Full System Design and Support For a new system design I can provide a total turnkey solution from concept to a fully tested and evaluated developed product. I am extremely methodical and organised in my approach and can arrange everything from component specification and procurement, right up to volume manufacture. I have a flair for electronic innovation with a proven track record of successful products. I have worked on numerous projects throughout my career, here are a few examples:- Self Contained Rugged design Test System entitled \"minFLITS\" This consisted of a rugged laptop fitted with an underneath instrument bay. The instrument bay allowed up to four PMC (PCI mezzanine card) instrument / measurement modules to be fitted within a rugged temperature controlled environment. I was responsible for the complete hardware design of this instrument bay except for the mechanical case. That is the electronic intelligent PCI backplane and all hardware interfaces between the laptop, instruments and the outside world. The resource backplane even allowed for \"Hot\" switching of the PMC instruments to conserve power and limit unnecessary heating when they were not in use. Digital Multimeter This full featured module was designed very recently on a PMC format to be fitted within the instrument bay of the miniFLITS described above. The module contained an onboard intelligent 16bit ADC with built in filtering. It could measure voltages up to 100 volts (DC and True RMS) and resistances to 100 Megohms with ranges and accuracy comparable to the National Instruments NI4050 PCMCIA card. This module with its size and low power consumption is ideal for portable measurements and data logging on laptop computers. I wrote the full test and evaluation software in VB6. This product was developed on a tight timescale and I achieved conception to working prototype in three months. The idea and design architecture was again all my own. Interface to the Flight Control Computer on a Lynx Helicopter I designed the electronic interface between this Flight Control Computer and the miniFLITS Instruments. The interface consisted of relays, solid state multiplexers, buffers and signal conditioning electronics. It also contained a phase lock loop to enabled precise phase, fequency and amplitude control of the AC stimulus signals. Slot Master Race Management System The Slot Master is a race management system designed to control and time scalextric and other slot car events. Its unique features are that it uses either a USB or PCI port and therefore is fully compatible with modern PC\'s and laptops. Besides normal lap counting and timing to 1/1000 second it is able to measure the throttle voltage for use in instant false start detection, fuel management and performance graphs. I pioneered some unique features with this software that have only recently just been copied. The windows software was written in VB6 and the firmware for the USB interface was written in C. This system was fully conceived and designed by myself and I have sold over 160 systems world wide. Distributed backplane and cable harness test system This test system was conceived by myself and provides a unique way of interfacing to multipoint test targets such as backplanes. The test system consists of high pin count intelligent test cards distributed around the target and connected by a 14way daisy chain ribbon cable. This avoids large and unmanageable cable looms that are very prone to damage. Again this system is very innovative with only one other of its kind sold in the world. High Voltage cable harness test system I was a former director of DTR Systems that designed and manufactured these testers. Although I have now sold the company, I am still closely involved and continue to provide a full design and support service. I was solely responsible for the full hardware and system design of this product family with the software written by another company director. The system is capable of measuring Gig ohm resistances at 1000 Volts down to milliohm values at 1 Amp. The tester also supports some unique functional features such as remote control of vibration and environmental chambers. These testers have been sold into some major blue chip companies such as BAE, IBM, Goodrich and just recently Rolls Royce. Torque Measurement System Design, development and product introduction of a stand alone torque measurement system used by the MOD to measure engine performance on a Lynx helicopter. The product was a stand alone microprocessor based system with its own display. All aspects of the product was designed by myself except for the firmware. Gas Detection I designed an eight channel gas detection system for the gas division of Blakell Ltd. I was responsible for the system, electronic and firmware aspects of this product with only the PC windows software written by someone else. The microprocessor based system could be used as a stand alone detection product, with its own alarms and warnings, or linked to a PC for data logging and remote control. Schlumberger/ Factron Series 7700 Test Systems I led a small team of people to design and develop the in-circuit capability on this platform of testers. The tester was extremely successful and achieved many sales back in the 1980\'s The following is a link to a patent I hold on the digital in-circuit architecture for these systems http://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=0&adjacent=true&locale=en_GB&FT=D&date=19850619&CC=EP&NR=0145194A1&KC=A1 mniej
  • Zatrudnij Davelelievre
  • Zatrudnij     MahmoodIsmael
Zatrudnij     MahmoodIsmael

    MahmoodIsmael MahmoodIsmael

    Egypt $70 USD / godzinę
    Senior Network Administrator
    Egypt
    4.9
    31 ocen 31 ocen $70 USD na godzinę
    I'm a full-time senior Windows server and network engineer since 2011 who have great experience in Microsoft Servers, Cisco and HP Networking and fluent in English. I hold the following titles: * Senior Data Network Engineer * Wireless Data Network Engineer * MS Excel Expert * MS Visio Expert * Arabic-English...
    I'm a full-time senior Windows server and network engineer since 2011 who have great experience in Microsoft Servers, Cisco and HP Networking and fluent in English. I hold the following titles: * Senior Data Network Engineer * Wireless Data Network Engineer * MS Excel Expert * MS Visio Expert * Arabic-English Translator Technologies: Microsoft, Cisco, HP, Aruba, Huawei, 3com, Mikrotik, SonicWall, Pfsense, Ubiquiti, NetGear, and Linksys Tools: GNS3, EVE-ng, Packet Tracer, VMware and VirtualBox. Have a look at my portfolio. It contains real case projects. mniej
  • Zatrudnij MahmoodIsmael
  • Zatrudnij     RafimKs
Zatrudnij     RafimKs

    RafimKs RafimKs

    India $40 USD / godzinę
    Expert System, Network & VOIP Administrator
    India
    2.1
    2 ocen 2 ocen $40 USD na godzinę
    Top 1% in the Freelancer.com Community. I am excited to offer 14 years of solid experience in Physical & Virtual Server & Networking Platforms, System Administration, Network Administration,Managing Telecommunications Networks and Technical Strategy. Below are a few of my strong assets for your...
    Top 1% in the Freelancer.com Community. I am excited to offer 14 years of solid experience in Physical & Virtual Server & Networking Platforms, System Administration, Network Administration,Managing Telecommunications Networks and Technical Strategy. Below are a few of my strong assets for your business: - Microsoft(Active Directory, DNS,DHCP, RDS,SQL Server(DB Admin),SharePoint, - Hyper-V, Exchange(All Versions &O365)Azure) - VMWare (ESXi, VCenter) - Citrix (XenApp, XenCenter) - Antivirus(Symantec(SEP),Mcafee(EPO),Kaspersky) - Linux (Ubuntu, CentOS,Debian) - Cloud(MS Azure,AMAZON AWS ,Google GCP,OVH and Digital Ocean) - Storage(Synology,QNAP,FreeNAS,WD,Dell and HP) - VOIP ( Avaya,3CX,Yeastar,XCally,GrandStream & FreePBX) - Firewalls (Fortinet, Sonicwall, Sophos, ASA,WatchGuard&PFSense) - Wireless(Cisco,Unify,Grandstream,Fortigate) - Routers (Cisco, Ubiquiti) - Servers (HP Proliant Servers) & (Dell/EMC Servers) I am happily available anytime using secure remote support or walk you through the steps via Freelancer chat .I am looking to show each client my worth to build a long relationship. Get started by clicking on "Hire Me" mniej
  • Zatrudnij RafimKs
  • Zatrudnij     RobMags
Zatrudnij     RobMags

    RobMags RobMags

    Armenia $15 USD / godzinę
    MEng - Means of Communication, Telecommunication
    Armenia
    1.2
    1 ocena 1 ocena $15 USD na godzinę
    Master of Engineering - Means of Communication, Telecommunication Network Design | Telecommunications | Network Engineering For at least 20 years already I have been working in communication systems. In the past I worked in TV (cable, satellite communications, MMDS (Microwave Multipoint Distribution System /...
    Master of Engineering - Means of Communication, Telecommunication Network Design | Telecommunications | Network Engineering For at least 20 years already I have been working in communication systems. In the past I worked in TV (cable, satellite communications, MMDS (Microwave Multipoint Distribution System / Multichannel Multipoint Distribution Service)) networks. Then, after completing military service, I worked in Telecommunications and IT (ICT), build global (WAN, SD-WAN, etc.) and local (LAN, etc.) networks, Fiber Optic networks (FTTH, FTTB, FTTC, FTTN, P2P, CWDM, PON/EPON, etc.), other Wired and Structured Cabling network, Wireless networks, IP cameras networks, etc. I have a lot of experience in designing of: - Fiber Optics networks (FTTH, FTTB, FTTC, FTTN, P2P, CWDM, PON/EPON, etc.) - Other Wired and Structured cabling networks - Wireless networks - IP cameras networks (NVR system) - Global (WAN, SD-WAN, etc.) and local (LAN, etc.) networks I can consult and supervise for design/build/optimization/troubleshooting of network/infrastructure also. I have two mottoes in the work: 1. Who wants to work that is looking for funds, who is not - the reasons 2. Irreplaceable professionals do not exist, there are irreplaceable staffs mniej
  • Zatrudnij RobMags
  • Zatrudnij     moh25
Zatrudnij     moh25

    moh25 moh25

    Palestinian Territory $18 USD / godzinę
    Web Developer and Systems administrator
    Palestinian Territory
    2.4
    1 ocena 1 ocena $18 USD na godzinę
    Network and OS manager and information security • Development plans for the network. • The responsibility of protecting and securing the network. • Design plan the network topology and vlans. • Monitoring the network by tools such as (ZABBIX and PRTG). • Manage CISCO Router. • Manage Firewall and Proxy Servers...
    Network and OS manager and information security • Development plans for the network. • The responsibility of protecting and securing the network. • Design plan the network topology and vlans. • Monitoring the network by tools such as (ZABBIX and PRTG). • Manage CISCO Router. • Manage Firewall and Proxy Servers (PFSense). • pfSense CARP cluster (High Availability). • Manage Mikrotik (Firewall, Monitoring,Router,QOS,Proxy). • Manage L2 Security Switch Managed (HP). • Install OpenVPN Server. • Nessus Vulnerability Scanner. • Network Resource Management. • Intrusion defense systems (IDS) and prevention systems (IPS) "SNORT". • VOIP Server (Astrisk,freePBX). • QNAP (NAS Server). • FreeNas. • Bandwidth Monitoring & Traffic Analysis (NetFlow). • Create Mesh network wireless technology. • File Server Management • Email server management • Web Hosting server management • Manage the printer server • Manage database backups • Manager Remote App Server • Manage Domain controller Server • Central Management CCTV and IP Camera NVR and DVR LINUX SERVER • DHCP Server • Squid proxy server • DNS Server • log server • Web Server (LAMP) • Video Lan Server (IPTV) • Free Radius • SMS Gateway (Play sms) • Chat Server-Opensource • Nginx as a web hosting and Reverse proxy VIRTUALIZATION TECHNOLOGY • Proxmox Virtual Environment Hypervisor • Proxmox HA Cluster • VMware ESXi Hypervisor • KVM (Qemu) • Veeam Backup & Replication Windows Server Admin • Active Directory • Group Policy • DHCP • DNS • Replication • WSUS • Backup And Server Recovery • Exchange server EMBEDDED LINUX | OPENWRT I have afew years experience working with Embedded System: Embedded Linux, OpenWRT, U-boot, device driver, Custom ROM • OpenWRT router with multiwan interfaces (3g/4g, wireless, ethernet) • OpenWRT add custom software package, fix compile and run-time issues. • Device driver development and trouble shooting: ethernet, wifi, GPIO • VPN, IPSec setup for OpenWRT routers, Build Custom ROM MIKROTIK ROUTER OS • VPN server, hotspot+popeServer, Load Balancing, Traffic Shaping • QOS Management, SMS Notification, Failover, Firewall, Vlan,IPsec WIRELESS Advanced configuration and implementation of Ubiquiti, Mikrotik and TP-LINK • Unifi Controller • Air Controller • Dude Server mniej
  • Zatrudnij moh25
  • Zatrudnij     bijan01in
Zatrudnij     bijan01in

    bijan01in bijan01in

    India $20 USD / godzinę
    Electronics & Telecommunication
    India
    2.9
    3 ocen 3 ocen $20 USD na godzinę
    Circuit design, PCB design by Eagle, Microcontroler
    Circuit design, PCB design by Eagle, Microcontroler mniej
  • Zatrudnij bijan01in
  • Zatrudnij     jaballifiras
Zatrudnij     jaballifiras

    jaballifiras jaballifiras

    Tunisia $20 USD / godzinę
    Software architect | Web designer
    Tunisia
    4.4
    15 ocen 15 ocen $20 USD na godzinę
    Autodidactic, college graduate (Master level), qualified freelancer since 2014. - Quality is top priority. - Seamless clear communication. - Available every day of the week most hours of the day. - Free revisions as long as the project period allows it. "'Whatever you do, do it well" -Walt Disney
    Autodidactic, college graduate (Master level), qualified freelancer since 2014. - Quality is top priority. - Seamless clear communication. - Available every day of the week most hours of the day. - Free revisions as long as the project period allows it. "'Whatever you do, do it well" -Walt Disney mniej
  • Zatrudnij jaballifiras
  • Zatrudnij     helmogey
Zatrudnij     helmogey

    helmogey helmogey

    Egypt $30 USD / godzinę
    Matlab,Python,Communication ,AWS ML Engineer
    Egypt
    3.0
    1 ocena 1 ocena $30 USD na godzinę
    Dears, Iam a Communication and Electronics Engineer Works in the telecom regulator as I monitor the quality of Service for mobile operators. Since I am having a spare time, I am starting to work as freelancer. I have experience in Matlab, Python, Data analysis, Web scraping, Machine Learning, AWS and neural...
    Dears, Iam a Communication and Electronics Engineer Works in the telecom regulator as I monitor the quality of Service for mobile operators. Since I am having a spare time, I am starting to work as freelancer. I have experience in Matlab, Python, Data analysis, Web scraping, Machine Learning, AWS and neural networks. also I have Udacity NanoDegree in deeplearning , deep reinforcement learning, Cloud DevOPS, AWS Machine learning, and Data analysis. Thanks mniej
  • Zatrudnij helmogey
  • Zatrudnij     mechatronicsengr
Zatrudnij     mechatronicsengr

    mechatronicsengr mechatronicsengr

    Pakistan $45 USD / godzinę
    Arduino | IoT | BLE | RF | Mesh SW/HW Developer.
    Pakistan
    4.3
    4 ocen 4 ocen $45 USD na godzinę
    (ما شاء الله) Hi, welcome to visit my profile! My name is Khawaja. I have been working as Embedded SW/HW Engineer for over seven years. I can use wide range of Development Boards/Microcontrollers Families •Adafruit (All Boards including BLE), Sparkfun Boards •Arduino (All boards including Arduino Mega, Nano, UNO...
    (ما شاء الله) Hi, welcome to visit my profile! My name is Khawaja. I have been working as Embedded SW/HW Engineer for over seven years. I can use wide range of Development Boards/Microcontrollers Families •Adafruit (All Boards including BLE), Sparkfun Boards •Arduino (All boards including Arduino Mega, Nano, UNO etc) •Atmel/Microchip PIC16F, PIC18F, PIC24F, •Atmel/Microchip (8-bit, 32-Bit) ATmega/ Attiny/Xmega Family/ ARM Series SAMD21E •Cypress BLE PSoCs, CYPRESS PSOC4/5/6 •Dialog's DA1458x •Espressif ESP12, ESP32/ESP32-C3, ESP8266 (NodeMCU, WemOS etc), •Nordic (nRF51, nRF52), nRF51822/ nRF52832/ nRF52840/ nRF9160 •NXP LPC1768 •PJRC Teensy 8bit (Teensy++ 2.0, Teensy 2.0) 32bit (Teensy 3.2, Teensy 3.5, Teensy 3.6) •Qualcomm CSR8670, Qualcomm CSR8675 •Renesas RL78 Series MCUs •Silicon Labs EFM8UB, EFR32BG22 •STMicroelectronics (STM8F, STM32 F0/F1/F2/F3/F4 ) Discovery/Nucleo Boards & Shields •Texas Instruments (TI) MSP430, MSP432, TM4C123G Launchpad, Tiva C boards,CC2540, CC2541, CC3200, C2000 , CC13xx, CC25xx, CC26xx, CC32xx I have hand on experience in RF/WiFi/IoT Protocols & Solutions •BLE Mesh, BLE/Bluetooth 5, GPS/GLONASS,, GSM, GPRS, 2G, 3G, LTE, NB-IoT, 6lowpan, LoRa, LoRaWAN, RF 315Mhz, 433Mhz 434Mhz,865Mhz, 868Mhz, 900 MHz, 2.4GHz RF Sub1GHz, RFID Low Frequency (LF) 125-135 KHz, High Frequency (HF) 13.56 (NFC) MHz, Ultra High Frequency (UHF) 868-930 MHz, UWB positioning, RF XBEE, Zigbee. I have knowledge and experience of following Peripheral Communication Protocols: OneWire (1WIRE), ADC, CAN, CANBUS, DAC, DMA, Ethernet TCP/IP,I2C(TWI), I2S,,M-Bus,Profibus, Profinet,RS232, RS422 RS485 MODBUS (TCP/IP) (RTU),SDIO,UART, USART, USB, SMBus, SPI, Serial, Timers, OBD-II, MIDI. IoT/Cloud Communication Protocols: TCP/IP, UDP, Sockets, REST, HTTP, SNMP, FTP, DNS HTTP, MQTT, OTA, Postman AWS IOT Core, Azure IoT Core, Google IoT Core, Blynk I can create Graphical User Interface using LCD, GLCD, TFT, LED, OLED Nextion Displays. I can create animations using Addressable Lights, WS2812B, NeoPixel. I have used following tools Tools/Software/IDE in my embedded system work. Arduino IDE, Atmel AVR Studio, Atollic True Studio, Cypress PSoC Creator, Eclipse, IAR Embedded Workbench, Keil uVision, KiCad, Mbed OS. MCU Xpresso, Microsoft Visual Studio (VSCode), Mikro C Pro , MPLABX IDE, nRF Studio, OpenOCD, PlatformIO, QT IDE, Segger Studio, Simplicity studio STM32 CubeIDE, STM32 CubeMX ,STVD ,System Workbench for STM32, TI Code Composer Studio (CCS) I can create Schematics and PCB design in Autodesk Eagle, Fritzing, Proteus, Tinkercad. I am expert in Programming Languages: C, C++, Embedded C, Python, LUA I am eager to learn new things. I have my own maker space equipped with all needed components and tools to make new products and designs. Looking forward to work with you. Thank you mniej
  • Zatrudnij mechatronicsengr

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