Upwork home
Sign up
Secondary

Hire the best Firewall Developers in Ukraine

Check out Firewall Developers in Ukraine with the skills you need for your next job.
Get started
  • $50 hourly
    • 5.0/5
    • (145 jobs)
    25+ years Linux System Administrator Native Ukrainian. Living in Slovenia. Open for good offers. I know *nix very well. Just ask me
    Featured Skill Firewall
    Debian
    Apache Administration
    MySQL
    MySQL Programming
    Network Administration
    TCP/IP
    Cisco IOS
    Unix System Administration
    OpenVPN
    Linux System Administration
    SQL
    Linux
  • $40 hourly
    • 5.0/5
    • (78 jobs)
    Expert Network & Systems Engineering: VPN solutions, OpenWRT firmware customization, containerization with Docker/Kubernetes, thorough network monitoring, and resilience. Experience: Specialized in elevating server and network infrastructures, my VPN works encompass versatile use cases such as remote access, inter-office connectivity, secure client/end-point communication, and Internet access. Core Skills: - Expert in VPN Configuration and Management of various protocols - OpenWRT Firmware Customization - Cultivated expertise in a variety of networking platforms, such as MikroTik, OpenWrt, UniFi, and more - Proficient with Docker Containers and Orchestration, CI/CD pipelines Professional Philosophy: Commitment to delivering user-friendly, reliable, and easy-to-maintain solutions. Striving to demystify network challenges for clients and enable them to concentrate on their core business activities. My vision as a Network and Systems Engineer is to deliver solutions that provide seamless, efficient communication and operations for end-users. Contact me for network engineering expertise that advances your infrastructure in line with contemporary practices and business objectives.
    Featured Skill Firewall
    Computer Network
    OpenWrt
    OpenVPN
    MikroTik RouterOS
    Linux System Administration
    Linux
    Network Equipment
    Network Engineering
    VPN
    SSL
  • $35 hourly
    • 4.1/5
    • (14 jobs)
    Network engineer with over 8 years of experience. In workflows, it was often necessary to master new technologies in order to troubleshoot and maintain critical services. Always ready to learn to acquire new skills and experience - Successfully finished Fortinet NSE 7 Network Security Architect - Have knowledge in administrating Exchange Servers - Worked with OCI and Azure
    Featured Skill Firewall
    Network Equipment
    FortiGate Firewall
    Linux System Administration
    HAProxy
    Information Security
    Computing & Networking
    Fortinet
    Computer Network
    Microsoft Exchange Server
    Network Engineering
    Network Administration
    Load Balancing
    Network Security
    VPN
  • $11 hourly
    • 4.9/5
    • (197 jobs)
    I am system/network administrator for over 14 years. Main specialization: * AWS/AmazonWebServices * Linux (Debian/CentOS) * LAMP/LEMP, PLESK, WHM/CPanel, VestaCP hosting panels * Websites/appalications/servers migration * Virtualization (KVM/LXC) * VoIP - Asterisk(IVR, DialPlan), Grandstream VoIP Phones(provisioning), Cisco VoIP Phones * Monitoring (Sensu+Grafana, Nagios, Zabbix, Cacti) * Networking * Cisco/Juniper/DLink/ZyXEL Switches/Router * VPN solutions - openvpn/ipsec/IPoE Good knowledge of CMS WordPress Basic knowledge of HTML, CSS, PHP, Perl, Ruby
    Featured Skill Firewall
    Amazon Web Services
    NGINX
    Amazon EC2
    Linux System Administration
    LAMP Administration
    DNS
    Cisco Router
    Plesk
    Network Administration
    Juniper
    VPN
  • $35 hourly
    • 5.0/5
    • (3 jobs)
    Greetings! I am a computer scientist with experience in Windows Server configuration, as well as Mikrotik and Pfsense hardware configuration, VPN and firewall configuration. I also have basic knowledge of JavaScript, PHP, Python programming languages.
    Featured Skill Firewall
    OpenVPN
    PHP Script
    Computer Network
    PHP
    Network Engineering
    Custom PHP
    Computing & Networking
    PfSense
    JavaScript
    VPN
    MikroTik RouterOS
    System Administration
    Python
  • $45 hourly
    • 5.0/5
    • (113 jobs)
    I'm UNIX/Linux System Administrator and DevOps engineer with 20 years experience. I have in setting up and managing servers, optimizing them for best performance and security aspects. I have expertise with setting up baremetal servers of various brands via IP KVM, IPMI, DELL DRAC, HP ILO. I'm working with virtualization platforms such as - VMWare, XEN, KVM, Microsoft Hyper-V, VirtualBOX. I'm working with cloud solutions as Amazon AWS, Google Cloud, Microsoft Azure I have set up and manage web servers using Apache/NGINX, configure HA clusters by using NGINX, Haproxy. The database servers administration MySQL, MariaDB, Percona, Oracle. Also, I have strong knowledge and experience with Windows Server various editions and Windows Dekstop platforms (Windows 10/11) I have great knowledge and strong experience with VPN technologies OpenVPN, PPTP, L2TP, IPSec, Wireguard. Very good knowledge and experience in troubleshooting.
    Featured Skill Firewall
    Linux System Administration
    OpenVPN
    VPN
    Windows Administration
    VMware Administration
    Network Administration
    MySQL
    Apache Administration
    Iptables
    FreeBSD
    DNS
    Amazon Web Services
    NGINX
  • $28 hourly
    • 4.7/5
    • (3 jobs)
    Thanks for your time. I am a skilled and passionate Flutter developer. With a deep understanding of mobile app development and a strong command of the Flutter framework, I am dedicated to creating captivating and high-performing cross-platform applications. Skills: * Problem solving, * Flexible team collaboration, * Delivery project on time, Frontend: Flutter, React, React Native with OpenAI Backend: Node.js, Django, Golang I pride myself on writing clean, well-documented code that is easy to maintain and scale. I enjoy collaborating with team members and clients to find creative solutions to challenging problems. Full Stack Developer Pavlo R.
    Featured Skill Firewall
    Linux
    Cybersecurity Tool
    VPN
    Firebase
    Swift
    React Native
    Flutter
    AWS Lambda
    OpenAI Codex
    Golang
    Node.js
    Django
    Angular
    React
  • $19 hourly
    • 4.5/5
    • (172 jobs)
    I am certified Microsoft, VMware professional and CISCO networking IT system administrator\ IT architect, with 20 years’ experiences - Windows server 2003/2008/2012 (R2)/2016 - Active Directory installation/manage/migration - Group policies, DNS, DHCP, Troubleshooting AD, Print servers, File servers - Office 365 administration, Exchange Online, Azure setup and manage - Windows wks XP/7/8/10 - PowerShell scripts development - Exchange local mail server setup and administration - Internet DNS records management for mail and hosts - Manage & setup Outlook and rest office applications - Organizing company backup solutions - Create disaster recovery plan and support it solutions - Manage CISCO equipment - switch, routers - Setup and manage Firewalls –Juniper, CheckPoint, FortiGate, Microsoft ForeFront TMG - VMware vSphere 4.x, 5.x, 6.x: ESXi, vCenter Server, Clusters, HA - Microsoft web server IIS administrator - SharePoint administrator\development\ architect , SharePoint migration (2007,2010,2013) - Dynamics CRM administration, Dynamics CRM migration - MS SQL administrator/ MS SQL developer - Centralized anitivirus systems : Kaspersky,Sophos, AVG - WSUS, patching local and remote systems, based on Active Directory technology level - SAN and NAS systems, connect devices by iSCSI or fiber channel - Hyper-V, Hyper-V clustering - BackupExec, VeemBackup - As well a lots of applications for pointed OS’s Certifications: MCP - Microsoft Certified Professional VMware- Install,Configure,Manage Check Point NG – management Cisco network device - Interconnecting
    Featured Skill Firewall
    VMware Administration
    Microsoft SharePoint Administration
    Microsoft Hyper-V Server
    Network Administration
    Windows Administration
    Microsoft SQL Server Administration
    DNS
    Microsoft Active Directory
    Windows Server
  • $20 hourly
    • 0.0/5
    • (0 jobs)
    DevOps, automation, installers. Experienced software engineer keen on: - DevOps ( SVN, GIT, Jira, Jenkins, VMware, Azure, Hyper-V, Docker, Kubernetes, AWS)
    Featured Skill Firewall
    Microsoft Hyper-V Server
    WordPress
    Drupal
    AWS Lambda
    PHP
    Azure DevOps
    Computer Network
    Python
    Linux System Administration
  • $17 hourly
    • 0.0/5
    • (0 jobs)
    I am a Senior Technical Specialist in ServerSupport.pro agency with 5+ years of hands-on experience in Windows System Administration, including handling multiple system operations, installation, upgrade, configuration, administration and maintenance of windows systems in a fast-paced, demanding business environment. TECHNICAL PROFICIENCY - Windows Server Administration (Windows 2000/2003/2008/2012) - VMWare Administration, Hyper-V - IIS 7.0 Administration - Active Directory Administration - SERVICES: DNS, DHCP, VPN FireWalls: Iptables, ipfw, pf. Ftp: ftpd, vsftpd, proftpd, pure-ftpd. VPNS: OpenVPN, Ipsec, PPTP, MPD - Backup systems: Acronis, Ghost, Bacula, Rsync, Dump/Restore, Tar, Idera R1Soft CDP Backup - TCP/IP Network Troubleshooting - Working with MS SQL/Oracle/PostgreSQL/My SQL Databases - XML Configuration - Server hardware planning & implementation, troubleshooting and maintenance. - Setup the monitoring in network systems (Zabbix, Nagios, Cacti) - Maintainance of physical and virtual server hardware and operating systems to ensure a reliability of server applications. ++++Provide technical support to the clients in any convenient format; 24/7/365. ++++Follow SLA (Service Level Agreement) and NDA (Non-Disclosure Agreement).
    Featured Skill Firewall
    Microsoft Exchange Server
    Windows 8 Administration
    NGINX
    Microsoft IIS
    Microsoft Active Directory
    Technical Support
    PostgreSQL
    MySQL
  • $25 hourly
    • 0.0/5
    • (1 job)
    - 25 years of expirience in administarion of variuos operation systems and application. - Setup and administration of web servers (plesk, cpanel, plain as well including all necessary services), database servers (clusters also), cutom applications servers, etc. - Security hardening, firewall configuration
    Featured Skill Firewall
    Jenkins
    Docker
    Microsoft SQL Server Administration
    Windows Administration
    Plesk
    cPanel
    Linux System Administration
    Apache Cassandra
    MongoDB
    PostgreSQL
    DNS
    MySQL
    Microsoft IIS
  • $25 hourly
    • 0.0/5
    • (0 jobs)
    I'm experienced System Administrator, network engineer and DevOps with two main focuses: 1) Helping new or small organizations to start with set of typical tools like corporate email, messanger, accounts and device management, configure network devices. 2) Helping large organizations in management of on-premise infrastructure and helping with cloud transition. I'm certified engineer in MS Azure, Office365, Information Security and Networking
    Featured Skill Firewall
    Cloud Computing
    Active Directory Federation Services
    Microsoft Active Directory
    Office 365
    Information Security
    Network Engineering
    Computing & Networking
    Computer Network
  • $19 hourly
    • 3.8/5
    • (3 jobs)
    I have been working for more than 15 years as an administrator of FreeBSD, pfSense, CentOS. Expert in FreeBSD, OpenBSD, pfSense, CentOS: - Configure - PF rule - iptables - OpenVPN - Webhook - Zapier - Traffic Shaper
    Featured Skill Firewall
    OpenBSD
    Zapier
    PfSense
    OpenVPN
    FreeBSD
    CentOS
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.