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Rating is 4.8 out of 5.
4.8/5
based on 949 client reviews
  2. Development & IT Talent
  3. Network Administrators
  4. (Current) Network Designers
  • $110 hourly

    • 5.0/5
    • (7 jobs)
    🔝 TOP-RATED PLUS ✔️ Juniper Routing, Switching and Security Expert (Emeritus-SP, JNCIE-SP, JNCIE-DC, JNCIP-ENT, CCNA) with 17+ years of experience in designing, deploying and troubleshooting numerous data networks. ✔️ Expert Level knowledge and working experience of MPLS, L3VPNS,NG-MVPN, L2VPNs, VPLS, L2TP, IPSEC VPNs, CGNAT, EVPN, VXLAN, LDP, RSVP, Traffic Engineering, Fast Reroute etc. ✔️ Strong practical knowledge of all major IP routing protocols e.g. BGP, OSPF, IS-IS, RSVP-TE, LDP including Policy-based Routing and routing policy implementation using BGP. ✔️ Hands-on Expertise with Juniper M/T-Series, PTX-Series, ACX and MX-Series (MX80/MX104, MX240, MX480, MX960, MX204, MX10003, MX10008) routers, EX/QFX series switches (QFX5100, QFX5110, EX9200, EX8200, EX500, EX4200, EX3300, EX2200) and SRX firewalls (SRX4600, SRX5800, SRX1440). Juniper services modules MS-DPC/MS-MPC/ MX-SPC3. ✔️ Hands-on Expertise with Cisco (2800, 3700, 3800, 7200, 7600, ASR1000, ISR1000/4000 Series routers and 2900 Series, 3550/3560/3750/4948 L3 switches), Cisco PIX/ASA firewalls and Huawei High-end NE-40E/NE-80E/NE40-8 Core routers. ✅ 10 Yrs experience in Juniper as Adv Services Consultant (7yrs) and ATAC (3yrs) ✅ 7 Yrs professional experience with ISPs and Telco providers working on Cisco, Juniper and Huawei routing platforms. Tags: Cisco, Juniper network, Juniper expert, Juniper Network Engineer, Juniper router, Juniper switch, MPLS, BGP, Mx104, MX204, MX10003, MX240, MX480, MX960, MX10008, QFX, QFX5100, QFX5200, SRX.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cisco Router
    Internet Security
    Multiprotocol BGP
    Cisco Certified Network Associate
    Routing
    Multiprotocol Label Switching
    Junos OS
    Network Architecture
    Implementation Plan
    Cisco
    Network Engineering
    VPN
    Juniper
    Network Administration
  • $59 hourly

    • 5.0/5
    • (82 jobs)
    Am a CCIE#26611 with extensive experience in Routing & Switching, Security, Datacenter, Virtualization, Programmability & Automation. Am delivering unique & absolutely different service for the below technologies: * SDN Datacenter: Cisco ACI, VMware NSX, Nutanix Flow, Arista. * SDN Storage: Cisco HyperFlex, Nutanix HCI, VMware VSAN. * SDN Access: Cisco DNA, LISP Implementation, Cisco Spaces, Cisco ISE, PacketFence. * SDN WAN: Cisco SDWAN, VMware VeloCloud, SilverPeak, PaloAlto SDWAN, FortiGate SDWAN, Meraki. * Programmability & Automation Controllers: Python & API tools to automate business intent & workflows within networks, Ansible, Chef, NSO, Terraform, OpenShift. * Monitoring Applications: Zabbix, SolarWinds, Home Made Custom Tools, Nmap, Packet Tracer (Wireshark). * Routing & Switching and Wireless Technologies: Cisco, Mikrotik, Juniper, FS, Arista. * Security: Cisco, PaloAlto, Meraki, FortiNet, Ubiquiti, VMware MDM. * Datacenter, Cloud Computing, Cloud Native, Virtualization & HCI Solutions. * Public Cloud: Design, Setup & Administer Tenants on AWS, Azure. * Micro-segmentation & Containerized Applications: Docker, Kubernetes. * Private 5G Networks: Azure Private 5G Core. * API Gateways & Swagger Documentation. * Python Scripting for DevOps, SecOps, NetOps & IaC. * Technical Writing & Documentation. Please refer to my LinkedIn account aossama. Certifications: * CCIE Enterprise CCIE#26611. * Cisco CCNP DevNet. * Cisco CCNP Enterprise. * Cisco CCNP Datacenter. * Cisco ACI Certified Specialist.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Server & Virtualization Software
    Fortinet
    MikroTik
    Cisco Meraki
    Network Security
    Palo Alto Firewalls
    Network Monitoring
    Network Engineering
    Python
    Information Technology
    Cisco Certified Internetwork Expert
    Cisco ACI
    Software-Defined Networking
    Cisco
  • $66 hourly

    • 4.7/5
    • (37 jobs)
    Certified Network Administrator/ Enterprise Ubiquiti Network Expert Certified Systems Engineering Expert Certified Systems Administration, Certified IT Support Specialist/Cyber Security Consultant Certified Network Security Expert (Home / Business), VAPT Certified System Security Expert. Certified HelpDesk Support Specialist Microsoft Azure Certified, Microsoft365/Azure EntraID Network Security Certified Network Security and deployment Consultant Domotz Expert/ Synology consultant Fortigate Certified Sonicwall Expert, Unifi/Ubiquiti Expert Hands on Experience on: Microsoft Exchange Online Windows 10 Administration Server Administration Experr Windows 11 Administration Remote IT Management/ VPN management Windows Server Administration Expert Domain Migration Microsoft Outlook Network Equipment consultation Server Virtualization Microsoft Windows Powershell Microsoft Active Directory Office 365 DNS DHCP Cisco, Fortinet, Fortigate, Pfsense Expert, Unifi/Ubiquiti Expert Administrator UDM pro, USG Expert UDM vpn Expert unifi specialist., MDM solution Specialist(jamfpro, Sophos mdm,) Azure, AWS, Google Work Space, Contabo, Rackspace Unifi, Ubiquiti Expert, SonicWall Expert(VPN troubleshooting) Threat Hunting, IPS ,IDS, WEB SECURITY, QUALYS, SENTINALONE. SOPHOS Network Administration, System Administration, Office365, Intune, MDM, Windows users Administration. Domotz admin, NAS, VLan Expert Windows servers 2016-2022 Failover Clustering , Hyper-V management, RDS, Synology DSM, Virtual Hosting. QNAP , QSAN ,NAS,SAN Active Directory Expert, VPN, Switches ,Routers Zendesk trainer, EDR, XDR, Connectwise Admin, CWRMM, Sentinal one Azure Sentinal. Fortinet, Cisco, Network monitoring Expert, Veeam Backup Specialist(Cloudberry, SPX) HIPPA complaince certified, PCI DSS accessor, PCI DSS complaince Expert. Having Certs (NSE1, NSE2, NSE3) ,CCNA, CCNP(training) Crowd Strike Deployment, TrendMicro deployment. Cloud Network/ System Administrator and Network/System Security consultant NSE 1 NSE 2 ICSI CNSS certified having vast and versatile experience in Network Administration with vast working in cloud technologies, QNAPS, VIRTUAL PRIVATE SERVERS , ACTIVE DIRECTORY. SECURING THE WEBSERVERS , SECURITY OF ON PREM NETWORK. Have worked on the antivirus deployments Crowd strike TrendMicro, Webroot, managing incidents and alerts on them. also have hands on Cisco network designs firewall configurations. Server and system administration grip on Windows Server (2012 2016 2019 2022) remote task management and remote assistant to the clients as well worked with the organization and provided them with tech skills network and system administration support as well as offered soft skills, my primary skillset is Network Design Network security OWASP mitigation System Hardening System Security Network Optimization Server administration Server Migrations Network troubleshooting Firewall Configurations Backup policies / configurations Desktop support. Cloud management Failover clustering Deployment and Management (Windows Server 2019, 2016, 2022). System security Solutions and Deployment. System Hardening. I will be optimizing the networks and will be providing industry solutions to clients including deployment of Antiviruses like crowd strike as well as trend micro I will be looking forward for more technical work here to pursue as a network and security consultant and technical support freelancer. I am sure I will provide quality work to the clients as per their requirements, and for me, client satisfaction is much important than the earned amount. I have worked with the US dental offices and MSP, so I want to invest my time here to reap good results. and serve the people here with my good technical skills about home networks and office networks . Hands on experience on Cisco Switches(CCNA CCNP LEVEL) and SonicWALL's + Fortigate firewalls, QNAP , QSAN, SYNOLOGY, Buffalo NAS, During My freelancing career i have worked on multiple projects like Network Designs solution deployment across the organization and on top of it have hands on Experience of vendor Management and have know how towards the TrendMicro and Crowd Strike. Setting up IT office were the main procedures during my Job Tenures and also Veeam backup deployment across the organization. EDR, MDR AWS AZURE Specialist. Experience in QNAPS, Synology, Virtualization Expert, Hyper V. Hands on Experience for providing Remote IT Support to multiple clients. Managjng Networks servers plus Security configurations.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Ubiquiti
    Information Security
    Network Security
    Network Administration
    Backup Administration
    Intrusion Prevention System
    Backup & Migration
    Cisco Certified Network Associate
    System Security
    Network Engineering
    Microsoft Azure
    Microsoft Active Directory
    Office 365
    System Administration
  • $225 hourly

    • 5.0/5
    • (90 jobs)
    Hey, I'm James. I've been a self-employed business network and server admin for 21+ years. I've worked with all flavors of Linux and Windows for some of the best businesses in the country. My average customer that I've worked with has been with me over 10 years. I specialize in analyzing current infrastructure and determining the needs of my clients then providing a written plan to correct any issues and protect the business systems from hackers and cryptolockers. In one of my recent projects, I consulted with a six billion dollar, publicly traded company to completely redesign their infrastructure to have redundant firewalls, VMWare host servers, leased fiber lines directly to Amazon AWS with a VPN backup over a regular Internet circuit that would automatically fail over in case of any circuit issue. The vmware servers would auto migrate the guests in the case of overload or host server failure. All power systems were redundant with two powersupplies for each piece of equipment. At the end of this project, we had reduced their monthly cost of management by over 25,000 per month and reduced their server load from over 20 servers to just 8 servers. When you hire me, here's what you can expect: 1. First, click the invite button to invite me to your job. 2. Once everything is accepted, I'll jump on the phone or a zoom with you 3. We'll go over the details of the job and I'll ask questions to drill down to the specific goals you want to accomplish. 4. I'll provide you with a high level written plan to address your goals along with expected time needed to complete your project. 5. When we agree on the timeline and process, I will execute the plan. So, if this sounds good, just click the "invite" button and we can start.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Docker
    Email Design
    Network Engineering
    Network Administration
    Network Monitoring
    Linux System Administration
    Network Security
    Network Planning
    Web Hosting
    Windows Administration
    Virtualization
    System Administration
    System Monitoring
    NGINX
  • $125 hourly

    • 5.0/5
    • (133 jobs)
    Experienced Network Engineer. Everything from Routing, Switching, WiFi, Designing, Troubleshooting. I started my career owning an Internet Service Provider and have worked in IT networking my entire career. I'm looking to expand my services by contracting projects for clients remotely. Currently working in with many network technologies at an expert level. Recent 2020 projects in: Cisco, Ubiquiti, Cisco Meraki, Many VOIP solutions, etc.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Network Planning
    PfSense
    Computer Network
    Firewall
    Internet Protocol Security
    Cisco Router
    Network Administration
    DHCP
    Network Equipment
    Virtual LAN
    VoIP
    Ubiquiti
    Cisco Meraki
  • $85 hourly

    • 5.0/5
    • (130 jobs)
    Hello! I am a Telecommunications and Networking Specialist and I primarily work with Cisco networking technologies, both wired and wireless, routing, switching, IP telephony and VoIP. Since 1999 I have had the privilege of working with multi-site organisations where these technologies have been applied to the fullest extent. In most cases, the applications of these technologies have been on an “enterprise” scale, with hundreds of users (or even tens of thousands for some municipal Wi-Fi networks) and tens of locations. I've been designing and managing Cisco IP telephony and data networks as well as writing proposals, RFPs and technical writing projects for large scale organisations in both the public and private sector in multiple countries including the USA, the UK and Greece. I’ve been technical manager of European funded projects and administrator for IP Telephony networks, data networks, municipal Wi-Fi networks and metropolitan fibre optic networks. I have a CCNP certification and four CCNA certifications in Routing & Switching, Security, Voice and Wireless. I am currently working towards my CCNP Collaboration and my CCIE certifications. I am also an instructor for Cisco Academy. Although I live in Greece, I was born and raised in Canada, so English is my first language. My Philosophy: The quality of my work and my services are of great importance to me. My goal is to always be on time, consistent and pleasant to work with. I will be clear and concise from the beginning, letting you know what each job entails and how much time it will take. All this will be done honestly, without fanfare and with integrity. I would even say that I will be chivalrous with my obligations towards you. This is good for you, because you’ll get done what you need to get done. This is good for me as well, because you will be pleased with my work and you will give me a good review. It’s a win-win situation! So I look forward to having the pleasure of working with you.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    VoIP Administration
    Cisco CallManager
    Cisco Router
    Network Planning
    Wireless Network Implementation
    Cisco Certified Network Professional
    Cisco Certified Network Associate
    Technical Writing
    Technical Documentation
  • $20 hourly

    • 5.0/5
    • (128 jobs)
    I'm an Engineer, a Tech-Enthusiast, and a Freelancer currently working as a Design Engineer in a well-reputed firm. I'm good with Canva, MS Visio, and Infographics. I have over five years of experience as a Visio professional, I provide the following services: I can design or redesign : + Network Diagrams + Flow charts + Uml Diagrams + Use case Diagrams + Workflow Flowchart + Process flow Diagrams + Data Flow Diagram + Decision Tree Diagrams + Entity Relationship Diagrams + Procedure Flow Diagrams + Project Flowchart + Organizational Charts + Layouts
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Microsoft Project
    Process Flow Diagram
    Flowchart
    Microsoft Visio
    Canva
    Block Flow Diagram
    Presentation Design
    Data Visualization
    Infographic
    Lucidchart
    Informational Infographic
    Microsoft PowerPoint
    Presentations
  • $45 hourly

    • 4.9/5
    • (69 jobs)
    I'm network and VOIP engineer with 11 years of experience. Over time I've completed the following certificates: 1. CCNA 2. CCNA security 3. CCNA wireless 4. CCNP - Not certified yet 5. MTCNA 6. MTCRE 7. Linux Essentials 8. LPIC-1 9. Sophos UTM Engineer 10. dCAA 11. 3CX I have experience with the following vendors: Cisco MikroTIK Sophos UTM Fortinet Checkpoint HP Ubiquiti - Unifi Juniper Alied Telesis PfSense I can help you with: Router configuration WAN Failover VPNs - IPSec, L2TP, OpenVPN etc... Routing - Static, Dynamic including OSPF and BGP MPLS - L3VPN IPSec Firewall - Filter rules, mangle rules etc... FHRP VRF QoS Switch configuration Vlans FHRP Etherchannel Port security Voice Vlan Trunks Troubleshooting Wireless configuration Cisco WLC and LWAPs Ubiquity Unifi - AP, Switch, USG MikroTIK - I have probably configured 500+ MikroTIK devices VOIP 3CX PBX deployment on prem and in cloud Phone management SIP Trunk management DID management IVR Queues Ring Groups etc... Email security Sophos UTM email filter Spam Titan email filter DNS - SPF, DKIM, DMARC Reach out if you find this interesting and we can discuss the details about your project.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    3CX
    PfSense
    Cisco Router
    Mikrotik RouterBOARD
    Cisco Certified Network Associate
    Sophos Sophos UTM
    Cisco Certified Network Professional
    Linux System Administration
    MikroTik RouterOS
    Network Administration
    MikroTik
    VoIP
    Ubiquiti
    VPN
  • $95 hourly

    • 5.0/5
    • (33 jobs)
    A result-driven Senior Network Professional with over 15 years' experience in Routing, Switching, Security and Network Design for corporate and enterprise networks.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Computer Network
    Virtual LAN
    Amazon Web Services
    Cisco Meraki
    Network Equipment
    Ubiquiti
    Network Engineering
    Palo Alto Firewalls
    Cisco Router
    Fortinet
    Mikrotik RouterBOARD
    Firewall
    VPN
    Cisco ASA
  • $130 hourly

    • 5.0/5
    • (34 jobs)
    I specialize in building, designing and troubleshooting network infrastructure and transport. Wired, Wireless, LAN, WAN, VPN and Security solutions to fit your business needs. I have been employed as a Network Engineer for Snapchat, Fortinet, Nuance Communications, Port of Seattle, Infospace, and Costco Wholesale. As a consultant I have worked on network and firewall projects as part of the AT&T consulting team for the State of Texas, New York Yankees and HP Enterprise. As a Professional Services Engineer for Fortinet, I deployed hundreds of Fortinet appliances for a large-scale IPSec VPN deployment for the State of Washington. Vendor Certifications include: Cisco CCNA, CCNP, Fortinet NSE4, NSE5, CWNA, Ekahau ECSE Design, Juniper JNCIA, and ITIL Foundations.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Google Cloud Platform
    F5, Inc.
    Cisco Certified Network Associate
    Network Security
    Wireless Communication
    Ubiquiti
    Extreme Networks
    Network Engineering
    Fortinet
  • $130 hourly

    • 5.0/5
    • (49 jobs)
    With over three decades of experience under my belt as a network and security engineer, I've traversed the ever-evolving landscape of LAN/WAN network design, implementation, and maintenance. My expertise is not merely a testament to time, but also backed by credentials including Cisco CCNP (route/switch), a Cisco CCDP for network design, and a PCNSE for Palo Alto Networks. In my journey through the realm of networking, I've engaged with an extensive array of gear, from the minutest components to the behemoths, including Cisco Catalyst and Cisco Nexus switches. Additionally, I've delved deep into the intricacies of Cisco ASA and Palo Alto firewalls, sculpting security rules and configuring VPNs with precision and based on their published best practices. I am always available for consulting for short-term and long-term projects. Thank you.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cisco Certified Network Associate
    Cisco Router
    Virtual LAN
    VoIP
    Wireless Communication
    Ubiquiti
    Cisco Certified Network Professional
    Palo Alto Firewalls
    Security Engineering
    Computer Network
    VMWare
    Network Engineering
    Cisco ASA
    Firewall
    VPN
  • $55 hourly

    • 5.0/5
    • (28 jobs)
    In a world of rapidly changing business goals and requirements, there is a continuously rising need for specially trained, seasoned, and experienced professionals with expertise in network design and architecture domains in the sector of Information and Communication Technology to help in the development of resilient, scalable, and secure network designs and architectures around the world. For a business to thrive and succeed, the foundation upon which it is built must be well planned, designed, and architected to achieve quality delivery in its implementation, which must be sustained by effective management provided by a competent team. As an IT/Network Solutions Provider and skilled network design & architecture personnel with broad experience in advanced networking across different scopes from small to large-scale network sizes, I possess an admirable amount of experience in different domains of networking, such as: Service Provider, Enterprise, Cloud networks, Data Center, and Automotive In-Vehicle networks. I am confident that my expertise, skills and experience have prepared me well for the quest of meeting business goals and exceeding unique business requirements to help organizations thrive and eventually succeed in their respective domains of operations, regardless of how challenging their competitions and competitors could be. One of my motivations as a trained Network Architect with experience across multiple domains & industries and the rare accomplishment of achieving the Cisco Certified Design Expert (CCDE) Certification is the growth and improvement I have experienced in the ability to translate business requirements into an implementable network design and architecture (LLD & HLD) that delivers unique business solutions with the capability of meeting business goals while exceeding the requirements within the scope of constraints that may exist. I am passionate about: Good team leadership and motivation; IT Governance, Cybersecurity, Research-oriented network solution development; and network design and architecture. I am aware that there are a lot of businesses seeking to have strategic and innovative solution providers in-house who are capable of building robust, scalable, resilient and cost-efficient modern networks, and I look forward to interesting opportunities to deliver exceptional service quality to meet your business goals and exceed your customers' requirements. My style of innovation is simply aimed at breaking out of the norm to make a positive change. Michael O.N MSc,CCDE,CCDS,CCNP,eCSIx2
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cisco Certified Design Expert
    Network Engineering
    Fortinet
    Cisco Certified Design Professional
    Troubleshooting
    Network Analysis
    Cisco Certified Network Professional
    Network Planning
    Linux System Administration
    Wireshark
    Python
    TCP/IP
    Multiprotocol BGP
    Network Security
    Firewall
  • $50 hourly

    • 4.8/5
    • (131 jobs)
    ## BIO Over 25 years of experience in IT. Over 20 years experience as Systems/Network Administrator for Internet Service Providers. Designed and implemented networks, including WANs, LANs utilizing wired and wireless technologies. Provided server administration for production SaaS website and eCommerce sites, including PCI DSS security compliance. ## Area of Expertise Operating Systems: Linux, FreeBSD, OpenBSD, RedHat, CentOS, Debian, Ubuntu, OpenSuSE, Windows Server (2000-2008). Routers: Mikrotik, Linux, low-end Cisco, SoHo routers. Networking: wireless, wired, LAN, WAN, switches, cabling. Server Software: Apache, Sendmail, postfix, DNS, bind, dovecot, courier, email, mail server, pop3, IMAP, WordPress, Joomla, bash, shell scripting.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cloudflare
    MySQL
    Postfix SMTP Server
    SMTP
    Linux System Administration
    Apache Administration
    FreeBSD
    OpenBSD
    Computer Network
    DNS
    Network Monitoring
  • $165 hourly

    • 5.0/5
    • (32 jobs)
    Sr. Architect and Engineer specializing in Cybersecurity, Networks, Cloud, and IT Systems with proven international business experience and management skills. UPWORK experience: 9000+ work hours, 100% Job Success, Top Rated Plus, Expert-Vetted With 15+ years of professional experience, I provide a complete set of services from proven advanced technical solutions and methodologies to business development, team-building, and management. I have successfully delivered complex projects across heterogeneous environments such as Telco/ISP providers, SMB, and Large International Enterprises in USA, Europe & Globally. Main offered services include: • Cybersecurity Architect • Network Architect • System Architect • Cloud Architect • Digital transformation • Solution design and implementation • IT strategy development • Information Security Manager • vCTO | vCIO | vCISO • Executive Consultant Highly experienced SME in the following technology fields: Information Security & Cyber Security • Develop & enhance Cybersecurity management frameworks. • Develop, implement & monitor strategic, comprehensive enterprise information security & IT risk management programs. • Develop, and maintain cybersecurity policies, standards, baselines, guidelines, and procedures. Network/IT/System Security • Firewall, UTM, NGFW & NG-IPS protection: Fortigate, FortiManager, FortiAnalyzer, Cisco (ASA FirePower), Barracuda, pfSense, Checkpoint, PaloAlto, SonicWall, WatchGuard • Email Security: Cisco, Barracuda, Mimecast, Microsoft • Web Security: Cisco, Barracuda, Fortinet, McAfee, Zscaler • Proxy and Reverse Proxy: Squid, Nginx, Dante • IPSec VPN & SDWAN: Cisco DMVPN, HPE ADVPN, Fortigate ADVPN • SSL VPN: Fortigate, Cisco, PaloAlto, Barracuda, SonicWall, OpenVPN, pfSense, Swan, OpenConnect • Network Access Control (802.1X, Radius, Tacacs+…), BYOD and MDM : Aruba ClearPass, Cisco ISE, PacketFence, NPS, Genians, Intune... • IAM SSO SAML2 Oauth: OKTA, Keycloack, Auth0 • DLP & CASB Bitglass, Forcepoint • EDR McAfee, Sophos, SentinelOne... • SIEM and SOC solutions - Wazuh, Fortinet, Splunk... IT Cloud/Systems/Virtualization/Backup/DR • Hybrid Cloud, Multi Cloud Architecture • Cloud Infrastructure Security, Networking, Storage, VPC (AWS, Azure, OVH, OpenStack...) • Virtualization planning, implementation, tuning (VMware, Proxmox, KVM, Hyper-V) • Hyperconverged HCI solutions ESXi & vSAN, Proxmox & CEPH • Linux Systems deployment, administration and development (Debian Ubuntu OpenSuSE CentOS RedHat) including performance optimization, hardening, scripting, HA, backup & restore • Windows Server architecture & administration (Hyper-V AD GPO DNS DHCP PKI File Server ...) • SAN (FC/FCoE), ISCSi, NAS(File) • VDI and Virtual App (Microsoft, VMware, Citrix) • Load Balancer/Application Delivery: HAproxy, Nginx, Barracuda, F5 • ElasticSearch & OpenSearch design & implementation • Critical HA Database clusters: PostgreSQL & MySQL • HA, Backup & Disaster Recovery planning & deployment (Veeam, VMware, Proxmox, Linux, AWS, Azure, Windows...etc) Network technologies • Switches: Cisco, HPE, Comware, Aruba OS, Arista, Alcatel, Juniper, Dell • Routers: Cisco, HPE, Comware, Alcatel, Juniper, Mikrotik • WiFi Mobility: Aruba OS & Central, Cisco, Meraki, Ubiquity, Mikrotik • MPLS L2/L3 VPN, MP-BGP, VPLS, SDWAN • BGP, OSPF, IS-IS, EIGRP routing protocols • FRR, VyOS, Bird • VLAN, QinQ, VXLAN, EVPN L2 scalable overlay networks • ACL, PBR, NAT, QoS, NAS; large-scale DHCP/DNS • IGMP L2 and PIM L3 multicast • Secure WiFi planning: controller managed & cloud-managed • NMS, EMS, FCPAS and OSS/BSS systems - LibreNMS, Zabbix, Nagios, Cacti Some of the most notable certifications I hold are: • CISSP - ISC2 • HPE Master Accredited Solution Expert - Network Solutions • HPE Accredited Solutions Expert - Network Architect • SUSE Cert. Linux Admin.: SLES In addition to technical skills, I deliver proven business operations experience for: • Business development planning and acquiring the correct technology • Project Management • Team building and management • RFP preparation Proposal preparation (technical/commercial) • Pre-sales & Sales Management • Business development, planning, and acquiring the correct technology • Project Management • Team building and management • RFP preparation Proposal preparation (technical/commercial) • Pre-sales & Sales Management • Business partnership establishment and management with leading companies such as HPE, Aruba, Fortinet, Cisco, IBM, Dell, Microsoft… and many more I am an avid learner, enabling me to swiftly adapt to new business environments and new project needs. Excellent communication and interpersonal skills combined with my long experience in team-leading & management enable me to collaborate strongly and work in global project teams with multiple members (in both leading or supporting roles).
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Certified Information Systems Security Professional
    Firewall
    High Availability and Disaster Recovery
    NIST Cybersecurity Framework
    Network Architecture
    Solution Architecture
    Cloud Architecture
    Cloud Security
    Business Development
    System Administration
    Cybersecurity Management
    Information Security
    VPN
    Network Security
  • $35 hourly

    • 4.8/5
    • (71 jobs)
    Technology Professional with experience in Data Center, Infrastructure and Network management. Specializing in the administration of Windows Server and Linux operating systems; VMWare vSphere and Hyper-V virtualization systems; And extensive knowledge in Networking, Active Directory, GPO, IIS, DNS, Microsoft Exchange, among others
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Security Infrastructure
    Ubiquiti
    Network Equipment
    Network Planning
    Network Security
    Iptables
    Firewall
    LAMP Administration
    Cisco Certified Network Associate
    PfSense
    Wireshark
    Wireless Network Implementation
    Microsoft Exchange Server
    Windows Server
  • $55 hourly

    • 5.0/5
    • (25 jobs)
    Self-motivated professional with a strong work ethic and a productive self-starter - proven with success being a freelancer at Upwork. Former network engineer with heavy immersion in Linux and TCP/IP stack. My technical career is: 2018 - 2021   ⚙🌐 System & Network Administrator 2021 - present  👨‍💻 DevOps/SRE Engineer ### SKILLS MAP ### Cloud-providers: ✔️ AWS ✔️ GCP ✔️ Hetzner DevOps: ✔️ Monitoring/Log coverage ✔️ Security check-up ✔️ Cost optimisation ✔️ Architecture ✔️ Ansible/Terraform ✔️ Containerization ✔️ Deployment ✔️ CI/CD Network Administration: ✔️ RouterOS (MikroTik) ✔️ Cloud networking ✔️ DOS/DDOS protection ✔️ VPN configuration ✔️ Site-to-site tunneling ✔️ Firewall configuration ✔️ DNS/DHCP/Routing protocols expertise ✔️ Packets analyzing System Administration: ✔️ Linux servers (Debian, CentOS) ✔️ Windows Active Directory ✔️ Bash/Python scripting & automation ✔️ ElasticSearch/Kafka tuning ✔️ SQL/noSQL database tuning ✔️ Nginx/HAproxy tuning Rate is negotiable dependent on business needs. Let's discuss details!
    vsuc_fltilesrefresh_TrophyIcon Network Design
    NGINX
    Ansible
    Cloud Services
    Cloud Architecture
    DevOps
    Grafana
    Docker
    TCP/IP
    Linux
    Bash
    Ubuntu
    MikroTik
    Python
    Network Administration
  • $39 hourly

    • 4.0/5
    • (12 jobs)
    I have over 22 years of experience designing and developing robust and scalable AI driven Wi-Fi routers and cloud applications using opensource. I have 5 years of onshore experience working with top MNC's like Cisco, Comcast and Cognizant. I was a key member of the Comcast's xFi cloud platform team and AT&T's Digitallife home automation platform team. In all my project, I ensure that maximum codebase is based on opensource. This ensures low operating cost, no vendor lockin and constant future upgrades. RDK-B / openSync / openWrt / openWiFi / prpl / Raspberry Pi Easy Mesh / Hotspot / Captive Portal / Kubernetes / LXC / openNDS / Coova Chilli Kernel Driver / Linux networking / IPv4 / IPv6 / Embedded Systems TR 181 / TR 069 / TR 157 / ACS / TR369 Wi-Fi / BLE 5.1 Kafka / Node/ Socket.io Artificial Intelligence / Machine Learning / Reinforcement Learning / Pytorch Anomaly Detection / Timeseries data / Computer vision / Speech Recognition Huggingface / Whisper / stable baseline3 REST API's MONGO / SQL / Timescale Our team is one of the best home Wi-Fi router development team in the world. We have deep experience in working on timeseries data for anomaly detection and automation.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    FFmpeg
    GStreamer
    Raspberry Pi
    Embedded Linux
    VPN
    Firmware
    Embedded System
    Network Engineering
    WiFi
    Router
    Reinforcement Learning
    OpenWrt
    Python
    PyTorch
    C
  • $80 hourly

    • 5.0/5
    • (9 jobs)
    🛜 Wireless Engineer Consultant | CCIE Wireless #67142 | ECSE | Ekahau Specialist | PMP | M.Sc. | B.Sc. 🛜 Over six years of experience in designing, deploying, and maintaining wireless networks. 🛜 Worked as a Wireless Consultant Engineer for the FIFA World Cup Qatar 2022, and as a Network Consultant Engineer and Wireless Technical Support Engineer for Cisco. 🛜 I am always interested in new projects and looking forward to discussing how we can work together.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cisco WLC
    Cisco Certified Internetwork Expert
    Cisco Certified Network Associate
    RF Design
    Wireless LAN Controller
    Computer Network
    Information Security
    IT Support
    Cisco
    Cisco Router
    Computing & Networking
    Network Engineering
    Communications
    Microsoft Office
    Computer Science
  • $125 hourly

    • 5.0/5
    • (710 jobs)
    Hello! I'm Tristan Curtis, a Top Rated IT Professional / Software Engineer with a passion for helping people with their technical needs. Backed with a degree in Information and Network Technology, accompanied by multiple certifications, and strengthened by extensive hands-on experience, I am well-equipped to tackle virtually any challenge you throw my way! Understanding the need for prompt assistance, I strive to be available within a moments notice, day or night. I offer a wide array of services including, but not limited to Web Application Development ▪️ Backend: PHP, Laravel ▪️ Frontend: Vue.js, JavaScript, jQuery, HTML, CSS, Sass, Bootstrap ▪️ Databases: MySQL, SQL Server, MariaDB, PostgreSQL ▪️ Specializes in: architecting complex web applications from scratch based on a provided design Web Administration ▪️ Domain and DNS support ▪️ Troubleshooting issues with Nginx, Apache and WHM/cPanel ▪️ Fine-tuning PHP FPM for optimal scalability ▪️ Installing SSL certificates and addressing renewal issues with LetsEncrypt / Certbot ▪️ Migrating websites from one hosting company to another Network Administration ▪️ Proficient in managing networks powered by the following vendors: UniFi, pfSense, MikroTik, Cisco ▪️ Expertise in deploying and troubleshooting wireless connectivity ▪️ Strong knowledge of VPN connectivity for remote access and site-to-site connections ▪️ Experience developing custom splash pages / captive portals to authorize wireless connections Desktop Administration ▪️ Experience with the following operating systems: Windows, Mac OS, Ubuntu and various other Linux distros ▪️ Virtual desktop administration utilizing VMware Horizon Database Administration ▪️ Experience with: MySQL, MS SQL Server, MariaDB and PostgreSQL ▪️ Familiarity with: Google Cloud SQL and AWS RDS Virtual Infrastructure Administration ▪️ Proficient in VMware ESXI/VMware vCenter and Hyper-V Email Administration ▪️ Setting up SPF, DKIM and DMARC for enhanced email security ▪️ Troubleshooting email deliverability issues ▪️ Seamless migration of email from one platform to another ▪️ Well versed in Google Workspace and Office 365
    vsuc_fltilesrefresh_TrophyIcon Network Design
    VMware Administration
    Data Migration
    Email Deliverability
    Web Hosting
    Twilio API
    Domain Migration
    MySQL
    Network Administration
    Laravel
    SSL
    PHP
    Ubiquiti
    DNS
    System Administration
  • $30 hourly

    • 4.5/5
    • (32 jobs)
    🏆 TOP-RATED PLUS: My 8+ years’ experience backups me as a great Wireless Engineer/ Network Engineer and Support Engineer. The experience is spread out between different businesses like banking, hospitality, pharmaceutical, insurance, public, and retail sectors. My coworkers and environment consider I'm exceptional at delivering expertise as an executive and leading all activities of multi-million projects as a project and Wireless engineer. Note that I have experience as high profile multi-national premier integrated technology solution provider for the hospitality industry called inter touch which is based in more than 40 countries. And I have extensive experience in Wireless/Wired Networking and Security focused on Configuration and troubleshooting of: 🎯 Firewall (Juniper, Fortinet, Meraki MX, Cisco ASA), 🎯 Gateway (Nomadix), 🎯 Network Switches (Cisco, HP, Ruckus, Aruba, Meraki MS), 🎯 Wireless Controller (Cisco WLC, Ruckus SZ, Aruba), 🎯 Access Points (Ruckus, Cisco, HP, Aruba, Meraki MR), 🎯 Servers (Centos 6.6, Debian 9), 🎯 Predictive Wireless Design using Ekahau Software, 🎯 System Administration, 🎯 Technical Support, 🎯 Network Support, and 🎯 Very Strong Troubleshooting skills. I have international certifications for networking, security, and wireless design like: 🎯 CMSS (Cisco Meraki Solutions Specialist) 🎯 ECSE Design- Ekahau Certified Survey Engineer 🎯 CCNA – Cisco Certified Network Associate (CCNA) 🎯 NSE-1, NSE-2, NSE-3(Network Security Associate) from Fortinet 🎯 CNSS (Certified Network Security Specialist) from ICSI
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Linux
    Microsoft Exchange Server
    Ubuntu
    Cisco Meraki
    Cisco Certified Network Associate
    Cisco Router
    Aruba
    Ubiquiti
    Wireless Network Implementation
    Wireless Security
    Cisco WLC
    Juniper
    Brocade
  • $65 hourly

    • 5.0/5
    • (10 jobs)
    New here so starting with a low rate CCIE Specialties: Cisco Security, FTD, ASA, Firepower, NGFW, NGIPS, ISE, Stealthwatch, OpenDNS, Fortigate, VPN, Linux, AWS cloud Security, Azure Security, PCI Compliance, Devsecops, Kubernetes, Docker, Guardicore workload protection, Segmentation, Network automation, SASE, Zero Trust, Nautobot, Netbox
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cisco IOS
    Web Application Firewall
    Cisco Certified Internetwork Expert
    Fortinet
    FortiGate Firewall
    Network Administration
    Kubernetes
    Python
    Docker
    VPN
    Firewall
    Network Security
    Cisco ASA
  • $30 hourly

    • 5.0/5
    • (5 jobs)
    - Multiple cloud-certified professional with 9+ years in different Amazon AWS, Microsoft Azure, GCP cloud services like EC2/VM, Serverless technology, RDS(Oracle/Mysql/Postgres) Aurora DB), API Gateway, Cloudformation, Terraform, and AWS CICD. - Migrating on-premises infrastructure and applications to Cloud. - Experienced in the creation of VM, disk expansions, snapshot creation, and restoration, volume migration across multiple regions, volume backup in multiple regions, and customizing and modifying AMIs as per business requirements. -Experienced in VPC creation, configuring instance firewalls, and configuring NAT gateways for securing outbound connections. -Focusing on disaster recovery, highly available, fault-tolerant, and auto-scaling of cloud environment. - Hands-on Experience with Azure Event Hubs, Virtual Networks, Azure Virtual Machines, Azure Active Directory, and Azure Data Lake - Experience in Azure Infra, Networks, Storage, Apps and Azure DevOps -Developing scripts for the build, deployment, maintenance, and related tasks using Jenkins, Docker, Ansible, Python, and Shell Scripting. -Creating fully automated CI/CD infrastructure and processes for multiple projects using Kubernetes, Docker, Jenkins, Ansible, Git, Python, and Helm pipeline. -Work on container management tools Docker, and Kubernetes, deploy the application on Minikube and EKS, and Manage through Helm. -Created GCP, AWS infrastructure using Terraform -- VPC, Networks, Kubernetes Cluster, etc. were managed via Terraform -Worked on terraform scripts to automate Kubernetes Cluster node addition, alteration -Worked on GKE with Istio Operator and GLB to implement end-to-end routing mesh and Networking in GCP -Highly experienced in SQL and NoSQL technologies. Responsible for data engineering functions including MDM, ETL, data warehouse, data modelling, operational data stores, and master data management -Extensively worked on Database (Oracle, SQL Server, PostgreSQL, MongoDB), SQL Server, VBA, Excel, PowerBuilder, UNIX, C#. -Extensive in-depth knowledge in the Cards & Payments domain in ATM/POS, Interface/Interchanges, Digital Wallets and Tokenization, Transaction Security, and Risk Management. -Experience in different log monitoring tools setups like Prometheus, Alert-Manager, Kibana, Elastic Search, Zabbix, and Grafana. -Implement PCI-DSS compliance cloud setup for payment gateway company in multiple projects. -Experience in different security tools Wazuh, Nessus, etc.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Database Design
    Cryptocurrency
    Blockchain Development
    Docker
    Solidity
    Terraform
    Amazon
    Serverless Computing
    Node.js
    Kubernetes
    ELK Stack
    Cloud Architecture
    Python
  • $78 hourly

    • 4.9/5
    • (310 jobs)
    - Top Rated Network and Cloud Engineer. - Expert Vetted by Upwork - top 1% of Upwork freelancers. - 300+ projects and 7000+ Upwork hours up to date. - Six figures in the past twelve months. - Full-Time Freelancer. - Half million + earned on Upwork. Networking vendors I have worked with: * Cisco, Mikrotik, Fortigate, Ubiquiti, Vyatta, VyOS, pfSense, Sonicwall, Sophos XG, Watchguard, Brocade, Ruckus, HP, Huawei, HPE, Aruba, Arista, etc. Cloud Skills: Terraform (AWS, Azure, GCP) AWS - VPC, EC2, RAM, R53, LB, S3, IAM/SSO, various NGFWs, Terraform. Azure - AD, AADDS, S2S VPNs, VMs, LB, NGFWs, Azure Hub-Spoke, Terraform. GCP - Cloud Compute, Security, NGFWs, Terraform. Digital Ocean Vultr ...
    vsuc_fltilesrefresh_TrophyIcon Network Design
    AWS Application
    Fortinet
    Open Networking Operating System
    Cisco ASA
    Ubiquiti
    Cisco Router
    MikroTik RouterOS
    Brocade
    PfSense
    OpenVPN
    Sophos Sophos UTM
    Google Cloud Platform
    Microsoft Azure
  • $50 hourly

    • 4.7/5
    • (17 jobs)
    By profession I am an Information Security Consultant and my core skills include designing and implementing network security solutions. I can help in various network security and monitoring solutions like Sophos, Cyberoam, RSA SecurID, Kaspersky and Barracuda. My certifications include but are not limited to Sophos Certified Engineer, Sophos Certified Architect and a Sophos Certified Trainer. I have more than 5 years of hands-on experience working with Sophos solutions particularly with XG firewall and Sophos Central. I have done numerous fresh and ad-hoc projects on various networks and I am well aware of industry best practices related to network security.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Web Application Firewall
    Sophos Sophos UTM
    Firewall
    Network Security
  • $60 hourly

    • 4.9/5
    • (35 jobs)
    I have been a Network and Server Administrator for the past 5 years but I have been supporting customers with computer problems for the past 10 years and I am well versed in my field now. I have many projects that I have completed for many companies outside of upwork, ranging from simple one server Domains to enterprise, multi-site networks of file servers and mobile computing. I can provide incite into problems that may come up in the future and also provide solutions to keep your hands from doing to much with automation of tasks and maintenance so you can spend less time with an IT person. I want to provide you with the best experience I can and fix the root of your problem so that you do not need to keep going out and looking for someone to fix the same problem over and over. I want to do the IT work that you need so you don't have to and you can go back to running your business the way you need.
    vsuc_fltilesrefresh_TrophyIcon Network Design
    System Administration
    Security Management
    .NET Framework
    Python
    Server
    Microsoft Windows PowerShell
    Automation
    Scripting
    Network Security
    VPN
    Virtual LAN
    Network Engineering
  • $170 hourly

    • 5.0/5
    • (44 jobs)
    ⭐Upwork Expert-Vetted ⭐ 100% Job Success ⭐ Multiple Expert Cloud & AI Certifications ⭐ ⭐ Decades of experience ⭐Azure ⭐ GCP ⭐ AWS ⭐ OCI ⭐ On-Prem ⭐ Traditional DS DC ⭐ I am a #Multicloud Certified Solutions Architect Expert/Professional across all three major clouds. I also hold a Google Professional Network Engineer certification, multiple expert SASE certifications, and an OCI Generative AI Professional certification. I will be adding more AI certifications very soon. As a Cloud Architect, my responsibilities generally include: --Understanding the vision for your business --Learning and understanding your organization’s business processes --Evaluating your current technology to see if it can achieve your future goals --Assessing your organization’s ability to change in terms of people, processes, and technology --Creating an optimized architecture to facilitate the achievement of your desired goals --Helping your account team develop a business case with a return on investment --Facilitating implementation of the new architecture, including hands-on involvement where it makes sense --Keeping stakeholders up to date --Managing vendors --Writing documentation --Training your team on the new architecture to ensure success My solutions are not necessarily locked into any single cloud. Part of my process is identifying target platforms that will return the most value to your business. In this modern age, there is no need to be locked into a single cloud, as this can often lead to unnecessarily high costs, reducing returned value. Many solutions will span multiple clouds and on-premises data centers. This is perfectly fine. However, if you have already selected a specific cloud for your solution, I can work with that too. With 40 years of experience, I have done the heavy lifting in the past, which makes me a better architect. It's easy to design plans for others to execute, but having done the execution and ongoing operation myself, I have an inherent ability to design successful solutions from the ground up. For clients without engineering teams, I am perfectly capable and happy to implement these solutions too. Whether you are building something new, migrating your existing infrastructure, or need to resolve problems in your current configurations, I am here to help you navigate through it. I need new challenges. It's in my DNA. What’s your challenge? How can I help you? #Cloud #Multicloud #Azure #GCP #AWS #OCI #Architecture #GenAI #GenerativeAI
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Generative AI
    Azure App Service
    Video Stream
    Google Cloud Platform
    Oracle Cloud
    Information Architecture
    Kubernetes
    Troubleshooting
    Amazon ECS for Kubernetes
    Microsoft Azure
    Intranet Architecture
    Microsoft Azure SQL Database
    Cloud Engineering Consultation
    Solution Architecture
  • $65 hourly

    • 5.0/5
    • (47 jobs)
    Google Cloud Professional Architect and DevOps with more than 8 years working with the cloud, java senior developer with 10 years of technical experience leading teams
    vsuc_fltilesrefresh_TrophyIcon Network Design
    Cloud Architecture
    Automated Monitoring
    Linux System Administration
    Spring Boot
    Spring MVC
    Cloud Engineering Consultation
    Apache Camel
    RESTful API
    GitHub
    Apache Kafka
    CI/CD
    Java
    JavaScript
    Google Cloud Platform
    Apache Tomcat
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