Hire the best Zimbra Administration specialists

Check out Zimbra Administration specialists with the skills you need for your next job.
  • $35 hourly
    A satisfied client is the goal of my work. I have over 10 years of experience with many operating systems. I have experience in configuring, monitoring, updating and maintaining system hardware, software and related infrastructure. I have strong analytical skills. I can work with technologies from a variety of engineering disciplines to troubleshoot complex system-level problems. I am motivated, dedicated to my work, responsible for solving the tasks assigned to me. Business before pleasure!
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    Network Security
    CentOS
    Plesk
    Debian
    Apache Administration
    cPanel
    Server
    Proxmox VE
    AWS Systems Manager
    SSL
    Microsoft Windows
    Ubuntu
    System Administration
    NGINX
    WordPress
    Microsoft IIS
  • $38 hourly
    I have 30-years experience in network projects including design, implementation, system administration and in software development. For the first 5 years of my career I worked on software development: coding and especially testing. For the last 25 years I'm working on implementation and maintenance of University of Nis WAN. Last 20 years I'm deeply involved in AMRES (Academic Network of Serbia) project. Don't fix it if it ain't broken, don't break it if you can't fix it! SKILLS SUMMARY - Any system administration tasks - Operating Systems: any *nix (Linux, FreeBSD, SGI IRIX, SCO, Solaris, OSX), Windows 3.1/9x/Me/XP/Vista/W7/W8/W10, WinServer NT/2K/2003/2008/2012/2016 - LAN & WAN: Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI and Wireless LANs. T1/T3, SDH/SONET, Frame Relay, WDM, ISDN, ADSL, SHDSL, Cable Modems, Cellular, X.25. - Network Protocols: TCP/IP, IPv6, UDP, OSI, CDP, IP Multicast, IPSec, VoIP, Routing, VLANs, Bridging, Trunking, VPN, SNA, DLS - Network Services & servers: SMTP/POP3/IMAP, FTP/SFTP, Telnet/SSH, HTTP/HTTPS, DNS, DHCP, NNTP, NTP, LDAP, SNMP, NETBIOS, Apache, Nginx, MySQL, Plesk, cPanel, Zimbra, VMware, CentOS, Ubuntu, Debian - Network Equipment: various types of modems, firewalls, switches and routers. - Dedicated, VPS and cloud environment servers (Amazon AWS, Google Cloud, MS Azure, Digital Ocean, Linode). - Programming Languages: Unix Shell scripting, BASH, C, Pascal, MS Visual Basic, PHP, HTML, (a bit of Python).
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    CentOS
    Ubuntu
    System Administration
    Apache Administration
    SSL
    Let's Encrypt
    Linux System Administration
    Firewall
    Red Hat Administration
    Internet Security
    Cloudflare
    Unix System Administration
    Network Security
    Network Administration
  • $15 hourly
    I am a completely fluent in the skills of Linux (Red hat, Centos and Ubuntu) from last 12 years. I have good experience with AWS solution, security architect and I have been working as a Sr. System Administrator for last 8+ years,. I have good experience in the areas of Linux system admin. Experience in planning and implementing Zimbra Email Solutions for various industries like Banking, Education, Insurance, IT, Pharmaceuticals, SME’s, etc. I am a hard worker and enjoy working at all critical conditions. If hired by you I will be responsible to complete the task within the stipulated time frame and with most confidence. Outsource me for your project and I promise to bring in the best output. My experience includes: • Server OS Linux Platform: Ubuntu, Debian, Centos, Redhat. • Cloud Servers: AWS • CMS: Joomla • Scripting: Bash • Monitoring tools: Zabbix • Web servers: Apache, Nginx • SSL: Letsencrypt, Comodo, Symantec, Digicert, self singed, or any other SSL • Email servers: Zimbra, Postfix, Sendmail,Qmail • Email deliverability: PTR, SPF, DKIM, DMARC. • Joomla: installing, migrating, troubleshooting. • Firewall: Linux iptables. Fail2ban • Other Application Server: DNS, FTP, DHCP, OpenVPN, PPTP, Proxy, Samba etc. • Moodle: installing, migrating, troubleshooting. • Koha: installing, migrating, troubleshooting. Zimbra Services. 1) Installation of Services 2) Modification 3) Migration from Gsuite, O365, Axigen, Icewrap, etc. 4) Up-gradation to Latest Version 5) Integrating with third party platform. 6) Zimbra Hosting on Cloud Platform.
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    Linux System Administration
    Zimbra Collaboration Suite
    Web Hosting
    MySQL
    Virtual Private Server
    Domain Migration
    Water Solutions Koha
    WordPress
    Email Security
    Joomla
    PostgreSQL
    Data Migration
    Moodle
  • $30 hourly
    Greetings to All, I am working as Senior System Administrator and VoIP Engineer for the last 7 years.I am an expert in setting up Class 4-5 Grade voip Softswitch (e,g PortaOne,voipsoft-switch) and also an expert in setting hosted PBX both multi-tenant and stand-alone. My Core skill is to Administer different types of VoIP system based on asterisk ( e.g.Freepbx,Asterisknow,Issabel,Elastix),Freeswitch(e.g.Fusion-PBX),Grandstream UCM and Linux(Centos-7, Ubuntu).I am also a certified expert in Vmware data center virtualization on Vsphere 6.7 . and Red Hat Certified Engineer. In this recent years i have completed so many systems and virtualization-related projects such as I have deployed 2000+ user mail server using zimbra and postfix then implementing data center virtualization and VoIP Platform using Elastix and freepbx on various Financial organizations such as Bank, IT,etc. I have completed my Bachelor in Electronics and Telecommunication also did my Masters in Computer Science.Hence My skills are sufficient to solve any complex and long-term work smoothly and accurately. Building state-of-the-art, easy to use, user-friendly websites and System applications is truly a passion of mine. I actively seek out new technologies, and stay up-to-date on industry trends and advancements. Thanks
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    VoIP Software
    Elastix
    VoIP PBX
    3CX
    VoIP Administration
    Virtualization
    Network Engineering
    Asterisk
    FreePBX
    VMware Administration
    VICIDIAL
    Linux System Administration
    Microsoft Azure
    CentOS
  • $20 hourly
    I am RHCE & RHCSS certified professional with over 5 years of System and Database Administration experience including experience in the areas of different Linux Distribution like Redhat, Suse-Linux, CentOS, Ubuntu, Debian, Window Server and database like Mysql,Oracle etc. I am very hardworking, dedicated and honest person and always give my 100%.
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    SSH
    Windows Administration
    WordPress Malware Removal
    Web Hosting
    SSL Certificate
    Email Support
    Website Migration
    Proxmox VE
    Amazon EC2
    Domain Migration
    Linux System Administration
    LAMP Administration
    cPanel
    Plesk
    Amazon Web Services
    CentOS
    Ubuntu
  • $20 hourly
    - Ten years work with Liferay from version 5.2.3 - Five years work with Spring Boot framework - Clean code, focus on testing to make code have more code coverage - Can do UI and DevOps --------------------- LIFERAY + Can work with Liferay 5.x: hook, ext, theme. JSR-168, JSR-286 + Work with Liferay 6: custom portlet, ext, theme + Work with Liferay 7: OSGi, module, custom portlet --------------------- SPRING BOOT + Design APIs in Swagger + Implement APIs in Spring Boot + Implement all kind of test: JUnit, Gherkin (for function test), Smock Test, Gatling (for Performance Test) + Check code security with SonarLink in IntelliJ + Make script for CI/CD use Jenkin, Azure + Hibernate Index Search, Lucene Search + Work with JSONB in PostgreSQL --------------------- IDE and Others + Can work with: IntelliJ IDEA, Eclipse, Liferay Studio + OS: MacOS, Win and Linux
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    CI/CD
    Liferay
    Hibernate
    Java
    Automated Deployment Pipeline
    Spring Framework
    PostgreSQL
    MySQL
    API
  • $25 hourly
    As a seasoned Linux System Administrator with 100% job success rate, I pride myself on providing expert service offering. My 5-star ⭐ reviews and raving client feedback are a testament to my dedication to my craft and the quality I bring to each project Skills & Expertise: - Operating Systems: Linux (Red Hat, CentOS, openSUSE, Ubuntu) - Databases: PostgreSQL, MySQL, MariaDB - Web Servers: Apache2, Nginx - Email Systems: Postfix, Exim, Zimbra - DNS: Bind9 with DNSSEC and TSIG - Network Access Control: PacketFence, IP Chains, pfSense - Security: Intrusion Detection & Prevention (Snort, Suricata, Tpot), Web Application Firewall (Mod Security, Sucuri, Imperva), SIEM (AlienVault, OSSEC) - Networking: Comprehensive knowledge in TCP/IP, DHCP, VPN, FTP, SMB, and more. - Development & Scripting: Python, Django, Perl, Bash, Jquery, Bootstrap5 Highlighted Projects: 1. Deployed multi-server deployment serving over 1500 email accounts. Project required dedicated VM instances for Zimbra proxy, Zimbra LDAP, primary and secondary mail stores. 2. Deployed authoritative internet DNS service using DNSSEC and TSIG for highly security conscious government client 3. Deployed a state-of-the-art spam filtering Mail Exchanger using Postfix and SpamAssassin with an emphasis on fortifying email security 4. Deployed and maintained critical IT services Point-Of-Presence at the London Internet Exchange, showcasing international expertise. 5. Deployed Bucardo multi-master replication for PostgreSQL databases across 50 sites Whether you're a large enterprise, a medium or small business, I bring the same level of enthusiasm, expertise, and dedication. Let's make your Linux and security projects a roaring success! 💼🚀
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    NGINX
    Apache Administration
    Network Security
    Email Security
    Cacti
    Linux System Administration
    DNS
    Database Management
    SMTP
    Network Administration
    CentOS
    SNMP
    DNSsec
    Snort
    MySQL
    PostgreSQL
  • $30 hourly
    I help my clients web server security and get their email out of spam and into people's inboxes. I will help diagnose and spot issues, strategize and explain the next steps all during our consultation. ⭐️ Better Web Server Security ⭐️ Over the last 10 years, I have worked on 2500+ sites security and experiences range from setting up secure and scalable Cloud servers for your websites and apps to setting up SSL certificates, Email Servers, performing a complete audit of websites/servers cleaning the Malware/Virus code, hardening servers for security, blocking & preventing hackers intrusion, and Penetration Testing. * Malware / Virus Removal from Sites / Servers (URL Injection, SQL Injection, base64, etc) * Penetration Testing (Checking site code for security vulnerabilities) * Full Vulnerability Scan and remove all Malware or Malicious codes * Fix Suspended WordPress or any website by Hosting due to Malware Infection * Site Transfer/Migrate to New Host / Domain (Any PHP based CMS or custom-coded site) * Website / Server Security & Firewall Protection * Optimize & Increasing the Speed of Sites (Reducing Page Load Time) * Website Security and Maintenance (Implementing security measures to maintain security) Also Good Experience in Server Setup and Maintaining - ( Windows 2008/2012/2016; Linux/ Ubuntu / Redhat / Debian ; Apache / Centos / Nginx / Chef / Critix ; Cpanel/ Plesk / DirectAdmin/ WHM/ Webmin ) ⭐️ Better Email Deliverability ⭐️ * Implementation of fixes and recommendations from deliverability audit * Monitoring deliverability KPIs on a retainer basis and sending weekly deliverability reports * Managing IP and domain reputation (MxToolBox, EmailonAcid, ReturnPath, 250ok, etc) * DNS & authentication protocols (e.g., SPF, DKIM, DMARC, BIMI) * Take all active/reactive measures to ensure healthy email open rates * Reducing spam score * Signing feedback loop with ISP (Google Postmaster, Microsoft SNDS, ReturnPath, Yahoo/AOL) I firmly believe in "under-promise and over-deliver" and endeavor to take on all projects with a win-win attitude and high consideration for my clients' needs. I work well with both technical and non-technical audiences. Contact and invite me TODAY, so we can discuss your business and see how we can work together.
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    Mautic
    Email Deliverability
    Postfix SMTP Server
    MailWizz
    WordPress Malware Removal
    Web Hosting
    Linux System Administration
    Internet Security
    SQL
    Zabbix
    SSL
    Office 365
    DNS
    NGINX
  • $40 hourly
    10+ years of professional experience in the Cloud and ISP industry. I possess many skills in systems installation, configuration, upgrading, and maintenance. Specialties: # Virtualization and Cloud: OpenStack, Proxmox, KVM, Docker, Kubernetes, AWS. # Storage: Ceph, TrueNAS, ZFS, GlusterFS, iSCSI, NFS. # Application Server: Exim, Dovecot, Postfix, Zimbra, Bind, PowerDNS, Apache, Nginx, OpenVPN, PPTP, cPanel/WHM, rSyslog, Zabbix, Cacti, etc. # VoIP: Asterisk, FreePBX, Vicidial, FusionPBX, Voice Gateway, SS7 Media Gateway. Vendor Certification: # Red Hat Certified Engineer (RHCE) # Red Hat Certified System Administrator (RHCSA) # Red Hat Certified Specialist in Virtualization (RHCVA) Always ready to learn new Technology and Techniques. Thank you in advance for your time and consideration.
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    Kubernetes
    DevOps
    Dovecot
    IPv6
    Exim
    Asterisk
    Elastix
    FreePBX
    VoIP Administration
    Linux System Administration
    VICIDIAL
    Virtual Private Server
  • $30 hourly
    I am System Administrator, I have 7+ of years experience. I have extensive knowledge on implementation of system infrastructure in large enterprise which includes OS configuration and Administration, setup and configuration of Web Server as per application requirement , implementation of mail servers (zimbra) etc. I have done many project in my professional career some of there is given below A. Project Deployment in Virtualization • Vmware ESXI, Vsphere 6.5, 6.7, 7.0, VMware Workstation • Virtaul Machine, vMotion & Storage vMotion • Kernel-based Virtual Machine (KVM) B. Administration and Deployment Open Source Solutions on Linux Server  Zimbra Collaboration Suite(ZCS) in Single Server & Multi Server  Nagios Core, Nagios XI, Zabbix Infrastructure Monitoring tools  Implementation Nextcloud Collaboration Suite  Installation Linux OS and configuration Apache, ngnix web server  MYDLP (Data Loss Prevention)  Elasticsearch-Logstash-Kibana (ELK)  HA Proxy (Load Balancer)  Squid Internet Proxy C. Project Deployment with Windows Server I. Active Directory & Domain Controller II. Windows Server Cluster III. MSSQL Server 2008 to 2014 IV. MSSQL Server Always ON, Fail Over Cluster, Fault Tolerance(FT) D. Database Server Installation, Configuration and Administration 1. MSSQL Server (SSMS) 2. PostgreSQL (pgAdmin Management Tools) 3. Oracle 4. MYSQL (PhpMyAdmin) 5. MongoDB (MongoDB with GUI) E. Email Administration (Setup, Configuration, Troubleshooting on Email Delivery) • Configuration, administration & Operation business email at Google Workspace Email • Configuration, administration & Operation business email at MS Office 365 Email • Configuration, administration & Operation business email at Godaddy Office 365 Email • Configuration, administration & Operation business email at Godaddy Office 365 Email • Configuration, administration & Operation business email at Zoho Email • Configuration, administration & Operation business email at yandex Email • Installation, Configuration & Maintenance Zimbra Collaboration Suite • Installation, Configuration & Maintenance Postfix Email Server
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    CentOS
    VMware ESX Server
    Web Hosting
    Mail Server Implementation
    System Administration
    Email Support
    cPanel
    Email Deliverability
    GoDaddy
    Office 365
    Linux System Administration
    Google Workspace
  • $30 hourly
    Enter a world where Cloud, Mail, System Administration and Security seamlessly blend. I'm your tech expert, orchestrating smooth IT operations and building robust, scalable cloud systems. My passion for safeguarding digital realms means I implement strong security measures and conduct thorough audits to fend off cyber threats. Join me at the cutting edge of technology and security, where simplicity meets strength. Offered Services: • Cloud Management: Navigate the clouds with proficiency in AWS, Google Cloud (GCP), MS Azure, DigitalOcean, Rackspace, OVH, and Vultr. Design and optimize scalable cloud environments with precision. • Web Hosting Servers: Command over Apache, IIS, Nginx, Tomcat, and HA Proxy ensures flawless web server management for optimal performance. • Mail System Management: Expertise in Postfix, Exim, MS Exchange, Zimbra, Windows SMTP, and MailEnable guarantees the smooth operation of diverse mail servers. Proficient in managing hosted mail systems like G-Suite, Office 365, Yahoo, and GoDaddy Mail. • Cloud Migration: Leverage the benefits of cloud computing by smoothly transitioning your data to platforms like AWS, Azure, Google Cloud, Office/Microsoft 365, G-Suite/Gmail/Google Workspace and Legacy Systems like IMAP. • Database Management: Navigate MySQL, MariaDB, MS SQL Server (All Versions), and Galera Cluster with finesse, ensuring robust and efficient database operations. • Security Best Practice: Champion cybersecurity with SSL/TLS implementation, PCI Compliance adherence, and penetration testing prowess. Guard against threats with an arsenal of security tools and techniques. • Control Panel Management: Navigate WHM/cPanel, Plesk, DirectAdmin, VestaCP, and CentosWebPanel for streamlined server administration and control. • Version Control System: Expert in Git and Subversion, ensuring smooth version control and collaborative development workflows. • Automation Management: Deploy automation with finesse using Puppet and AutoHotKey, streamlining repetitive tasks for enhanced efficiency. • CDN Management: Optimize content delivery with expertise in CloudFront, CloudFlare, and Incapsula CDN solutions. • Firewall Management: Implement robust firewall solutions with expertise in Cisco, FortiGate, Sonicwall, WatchGuard, and CSF, fortifying digital perimeters. • SSL/TLS Expert Services: I provide comprehensive solutions for digital security, including SSL certificate installation, protocol optimization, and vulnerability assessments, ensuring encrypted and secure online transactions. • Email Deliverability Enhancer Services: Maximize the effectiveness of your email marketing by optimizing deliverability through sender reputation management, authentication protocols and content relevance analysis, resulting in higher engagement and inbox placement rates. Why Choose Me: • Technical Versatility: Proficient in a variety of website platforms, CMS, and mail systems, ensuring adaptability to your unique tech stack. • Data Security Focus: Implement robust encryption and authentication measures to safeguard sensitive website and email data. • Minimized Downtime: Strategically plan migrations to minimize disruption, ensuring your online presence remains accessible and operational. • Client-Centric Approach: Collaborate closely with you to understand your business needs, providing personalized solutions and ongoing support. Take the journey with a skilled tech expert who seamlessly integrates diverse talents to build resilient and efficient IT environments. Let's collaborate to push the boundaries of technological excellence together.
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    Google Apps Script
    Web Host Manager
    DigitalOcean
    Mail Server Implementation
    Apache Tomcat
    Postfix SMTP Server
    SSL
    Cloudflare
    TLS1.2
    Website Migration
    Microsoft IIS
    Office 365
    Microsoft Azure
    Amazon Web Services
    Microsoft Exchange Server
  • $70 hourly
    6+ years as DevOps 8+ years as Virtualization / Cluster Expert 12+ years as Linux/BSD administrator 15+ years as Network Engineer 16+ years as Systems Administrator I can help you with: ➢ Virtualization: KVM, Xen, OpenVZ, LXC, LXD, FreeBSD Jail, Proxmox, VDSmanager, Docker ➢ Management: Proxmox, OpenNebula, OpenStack, oVirt ➢ Storage: CEPH, LizardFS, DRBD, SCSI, ISCSI, SAN, NAS, LUNS, ZFS ➢ Orchestration: Puppet, Foreman, Ansible, Chef, Salt ➢ High availability: Corosync, Pacemaker, MySQL cluster, Multipathing, Bonding ➢ Monitoring: Zabbix, Monit, Cacti, ELK(Elasticsearch+Logstash+Kibana) ➢ Backup & Archiving: Bacula, rsync
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    DevOps
    Linux System Administration
    Proxmox VE
    Unix Shell
    Storage Area Network
    Cloud Computing
    Network Administration
    Docker
    Zabbix
    Virtualization
  • $39 hourly
    Hi, I am an experienced Network/Systems/Security/Cloud professional with a passion for technical support. I have 15 years of hands-on experience in multiple domains, including Google Workspace, Microsoft 365, Windows 365, Azure, AWS, and GCP. I specialize in migration services such as Gsuite to O365, O365 to O365 (One Drive to One Drive, etc.), and email migration. I am also proficient in Cisco Meraki, Mikrotik, Bitninja, WordPress Malware Protection, Contabo, Hetzner, Microsoft 365 Security Compliance, Microsoft Azure Virtual Desktop Environment (VDI), RDS Terminal Support, Gsuite Workspace, Azure VPN, AWS Console, AWS VPN, UBNT ubiquiti devices, Azure Cloud services, VPN services, Windows servers complete, DHCP, DNS, Active Directory, additional active directory, Hyper V, Vmware Certified hands-on experience expert, SSL configuration, Fortigate firewall, Cisco network switches, routers, firewall, network diagrams, network assessment, infrastructure high-level diagram cloud, and physical. In addition, I offer password reset services for Windows servers, Google Suite, AWS, Office 365 certified expert with hands-on experience (Microsoft Expert), cyber security expertise, port forwarding, access your application as you are in office support, remote O.S. installation support, NAS/SAN support all types, backup software VEEAM, etc. support, Microsoft Exchange deployment, and troubleshooting, Microsoft SQL troubleshooting. My technical expertise is complemented by my strong work ethic, passion for completing projects on time, and dedication to providing excellent customer support. I am a Microsoft Certified Solutions Expert, Azure Solutions Architect Expert, Azure Administrator Associate, and Azure Fundamentals certified. Additionally, I hold an AWS Certified Solutions Architect - Associate certification. If you are looking for a highly skilled and reliable professional to support your network/systems/security/cloud needs, then look no further. Please feel free to reach out to me for any inquiries, and I promise you won't regret it. Thank you for your consideration. Welcome to my profile! I am a Network/Systems/Security professional with 15 years of hands-on experience in multiple domains. My passion for technical support ensures that I always strive to provide the best possible standards and support for my clients. Here are some of the skills I have acquired throughout my career: AWS Workspaces and Active Directory Azure Virtual Desktop Environment Mikrotik Hotspot Gsuite Workspace Azure VPN AWS Console AWS VPN Migration of emails UBNT ubiquiti devices Azure Cloud services VPN services any Windows servers complete DHCP, DNS, Active Directory, additional active directory. Hyper V Vmware Certified hands-on experience expert SSL configuration Fortigate firewall Cisco network switches, routers, firewall Network Diagram's Network Assessment Infrastructure High-level diagram cloud and physical Password reset services for windows servers Google Suite AWS Office 365 certified expert with hands-on experience (Microsoft Expert) Cyber Security expertise Port Forwarding. Access your application as you are in office support. Remote O.S. installation support NAS/SAN support all types. Backup software VEEAM etc. support Microsoft Exchange deployment and troubleshooting Microsoft SQL troubleshooting I have a wide range of technical expertise, including Cisco routing and switching, Mikrotik routing and switching, Exchange/Active Directory migrations, Fortigate configuration, Unifi switches and Wi-Fi, Brocade switches, Barracuda Load Balancer, Microsoft all technologies, online desktop support, networking, system engineering, Windows Servers, Exchange Server, DNS, DHCP, DHCP Failover, Azure, Google Cloud, Alibaba Cloud, VMware, vCenter, high availability. Furthermore, I hold the following certifications: Microsoft Certified: Azure Solutions Architect Expert Microsoft Certified: Azure Administrator Associate Microsoft Certified: Azure Fundamentals Microsoft® Certified Solutions Expert: Productivity (Charter) Microsoft® Certified Solutions Expert: Messaging Microsoft® Certified Solutions Associate: Office 365 Microsoft Specialist: Server Virtualization with Windows Server Hyper-V and System Center Microsoft Certified Professional AWS Certified Solutions Architect - Associate I am committed to completing my work on time and ensuring that my clients receive the highest level of technical support. Contact me today to see how I can assist you with your network/systems/security needs.
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    Cisco Certified Entry Networking Technician
    Network File System Administration
    Migration
    RAID Administration
    Ubiquiti
    MikroTik RouterOS
    Microsoft Azure
    Cloud Security
    VMware Administration
    Microsoft Exchange Server
    DHCP
    WiFi
    Microsoft Hyper-V Server
    Cisco Router
  • $60 hourly
    Support and development on asterisk, vicidial, goautodial, fusionpbx, freeswitch Linux System Administration ( CentOS, Debian, Ubunut) Database Management (Mysql, PostgreSQL) Network Administration (Router, Switch, Hardware Firewall)
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    VoIP
    Linux System Administration
    VICIDIAL
    PHP
    MySQL
    FreePBX
    Network Administration
    Android
    A2Billing
    iOS
    FreeSWITCH
    Asterisk
    Customer Relationship Management
    Mobile App
    Session Initiation Protocol
  • $35 hourly
    Hi... I'm Henry Kusdaryanto. I'm a Consulting Engineer * Proud of Thinkpad T430 and X230 user * Windows, Linux and Hackintosh user * Linux distros: CentOS, FC, RHEL, Debian, Ubuntu * Linux software: Iproute2, Iptables, LDAP, Apache, Lighttpd, Nginx, MySQL/MariaDB, Samba, DNS, FTP, SNMP, Cacti, Nagios, Postfix, Qmail, Exim, Dovecot (+Sieve), Webmail, Rspamd, ClamAV, Plesk, CPanel, git and more * Virtualization: Virtualbox, Proxmox, OpenVZ, Xen, VMWare * Networking: Routing (Static Routing, BGP, OSPF, EIGRP, RIP), VRF, Switching, Multicast, NAT, IPSec, IPv6, Security * Scripting: Shell, Python, PHP * Control Panel: VestaCP, Ajenti, Cpanel and more * Cloud Environment: AWS, GCP, Digital Ocean, Arubacloud and more * Hardware: Cisco, IBM, HP, Huawei, Mikrotik, Ubiquiti, Juniper and more Certifications: * MCP in Small Business Server * CCNA(Cisco Certified Network Associate) *Expired* * JNCIA(Juniper Network Certified Internet Associate) *Expired* * HCNA(Huawei Certified Network Associate) *Expired* Despite expired certificates, the concept and basic knowledge is still very strong Debug - Logs - Resources Utilization Monitoring - Fix - Monitoring - Solved cheers, Henry Kusdaryanto
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    Debian
    Linux System Administration
    DevOps
    Desktop Support
    Web Server
    Network Administration
    Web Hosting
    Domain Migration
    Mail Server Implementation
    cPanel
    Web Host Manager
    Amazon Web Services
    DNS
    Google Cloud Platform
    CentOS
  • $38 hourly
    Red Hat Certified System Engineer, having around 12 years of experience working in Linux environment and worked on many projects over the year involving Cloud and Dedicated servers. Knowledge of Enterprise Infrastructure technologies and architecture. Worked as consultant on various projects in the past to design and implement an environment which uses Linux and Clusters to run Applications. Os : Linux and Wondows server expert Cloud Services : AWS,GCP, Linode, ToggleBox Configuration : Ansible Containers : Docker/Kubernetes Relational Database Servers : MySql, Oracle, PostgreSql, MsSql,MongoDB DB Languages : Pl/Sql,Stored Procedures, SSIS Scripting Languages : Bash, Perl, Java No Sql Database servers : MongoDB Atlassian: Jira Web servers: Apache, Nginx, Tomcat Mail Servers : Zimbra,Postfix,Sendmail,Hmail,Dovecot Monitoring: Nagios, Zabbix, Monit, Munin, Cacti Virtualization: Openvz, Vmware/Vsphere ESXi/server, VirtualBox CMS : Wordpress, Magento firewalls: iptables, ufw Other: standard network services (DNS, DHCP, FTP, SVN/Git, http proxy, VPN, backups, monitoring etc)
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    Oracle PLSQL
    Windows Administration
    MySQL
    LAMP Administration
    PostgreSQL
    Linux System Administration
    MongoDB
    Unix System Administration
    Amazon Web Services
  • $150 hourly
    A Top-Rated, Expert-Vetted VoIP/Software engineer with over 20 years of experience. My experience ranges from Asterisk/FreePBX phone systems, SMS messaging, Linux operating systems, to network administration. I believe you deserve a more professional, reliable, and personalized business experience, and I bring that mindset to every project. Whether I’m developing top-secret code for Lockheed Martin, or AI telephone agents for Nomo, or creating privacy-first communications for Mecca Hosting, Inc, or designing secure, high availability Asterisk systems for TeleConnx Inc., or handling difficult troubleshooting tasks, I always commit myself to the same standard: creative, client-first solutions and efficient, high-quality work, completed in a fraction of the time. I have a passion for transforming mundane phone interactions into exciting customer experiences, and I lean on decades of experience to create solutions that others would find impossible. In short, I can make your telephone system do pretty much anything, including turning on your coffee maker in the morning. I look forward to working with you!
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    FreePBX
    MySQL
    Kamailio
    Linux System Administration
    Amazon Web Services
    VoIP Administration
    Asterisk
    API Development
    C
    VoIP Software
    LAMP Administration
    Session Initiation Protocol
    Linux
    VoIP
    Business with 10-99 Employees
  • $30 hourly
    Managing various application of Linux/Unix environments. ✔️ Linux:- CentOS | Ubuntu | Debian | Redhat ✔️ Apache | Nginx | LiteSpeed | MySQL | PhpMyAdmin | CWP | WHM | cPanel ✔️ Deployments:- LAMP | LEMP | Node.js | Python | Tomcat | JBoss | RoR ✔️ CMS:- Wordpress | Drupal | Joomla | Mediawiki | Moodle ✔️ Email Servers:- Zimbra | Postfix | Mail-in-a-box | modoboa ✔️ Google GSuite | Microsoft 365 Admin | Sendgrid | AWS SES ✔️ Networking/Firewall | PfSense | IPFire | OpenVPN ✔️ DNS | NFS | SAMBA| FreeNAS ✔️ DevOps | CI/CD | Jenkins | Ansible | Git ✔️ Containerisation | Docker |Kubernetes ✔️ FreePBX | Digium VOIP System ✔️ Cloud Platform | AWS | Linode | DigitalOcean | Azure | GCP ✔️ VMware | vSphere (vCenter, ESXi) | VirtualBox | KVM | QEMU ✅ I offer 1 hour of free work to let you try and taste the quality. No strings attached. I am glad to look into your project before we start. Just invite me to a job and i would gladly try making this work. That's because i am interested in long term collaboration.
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    Web Host Manager
    SSH
    Plesk
    cPanel
    Web Hosting
    Internet Security
    Linux System Administration
    System Analysis
    LAMP Administration
    Amazon EC2
    Network Administration
    System Administration
    NGINX
    Python
    Amazon Web Services
  • $35 hourly
    ***A few of the client reviews about the past projects.*** ⭐⭐⭐⭐⭐ "Udantha was GREAT! He was VERY knowledgeable of everything Server related and was able to fix my Hacked server in a short amount of time! Will recommend him to anyone looking for quality, professional work done for their business..." ⭐⭐⭐⭐⭐"Udantha is extremely talented and has completed all jobs successfully without any complication. He is the complete package, understands instructions, and finds the solution to complete tasks. thanks" ⭐⭐⭐⭐⭐"He is a very skilled and helpful freelancer. I needed to fix issues on my server urgently. He responded quickly and fixed the issues. Highly recommended" ⭐⭐⭐⭐⭐ "I have worked with Udantha Chandimal multiple times and am very satisfied with his work each project we have worked on. Highly recommend him to others." ***My experiences*** I'm an Experienced Systems Engineer with a demonstrated history of working in the IT industry. Skilled in pfSense, RedHat Linux, Windows. Strong information technology professional with a BSc (Hons) in Information Technology Specializing in Computer Systems & Network Engineering Web Hosting Experience ✅ Installing paid/free control panels ✅ Web hosting with or without control panels ✅ Server/Website Rescues ✅ Website migration ✅ SSL Configurations (With autorenewal) System engineering experience. ✅ Administrating an environment of 40,000+ servers (Linux+Windows). ✅ Experience in communication with global stakeholders. ✅ Global monthly OS patching. ✅ OS troubleshooting - Linux (LDAP, SSSD, NFS, CIFS, etc...) ✅ Server Hardening. ✅ Performance tuning and monitoring. ✅ Practice in the ITIL standards. Other Experience ✅ Hands-on experience in installing and configuring firewalls (pfSense): Clustering, DHCP, DNS, Captive Portal, Multi-WAN load balancing, VPN (IPSec, OpenVPN) implementation. ✅ Analyzed intricate server issues and supported large enterprise and business-critical applications. ✅ Determined and resolved bugs and other issues regarding project requirements in a timely fashion.
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    AWS CloudFront
    DigitalOcean
    CentOS
    Web Server
    Red Hat Certified Engineer
    HTTP
    Ubuntu
    Cisco Certified Network Associate
    Cloudflare
    NGINX
    VPN
    PfSense
    Odoo
    SSH
    MySQL
  • $25 hourly
    I have more than 15 years of experience in the software development industry. I have been involved in different projects from scratch, including iPhone, iPad, Android apps, websites, and enterprise-level applications. We have used Objective C, Swift2, Swift3, Kotlin, Flutter, Java, and Hybrid Platform like React Native. Expert in Java J2EE, Spring, Node JS, React JS, Angular, and databases (MySQL, MariaDB, MongoDB, Sqlite, MS-SQL, and Oracle) Web development includes PHP, Java, Laraval, and open-source tools WordPress, Joomla, Drupal and Shopify, Big Commerce, Woo-commerce. In the modern era, people have a great sense of the quality of the product. To enhance my skills for understanding the overall attributes of quality, I got a degree in MS Total Quality Management.
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    Software Design
    DevOps
    WordPress
    FinTech Consulting
    Agile Project Management
    MySQL Programming
    Blockchain
    Laravel
    Android App Development
    PHP
    Java
    Node.js
    iOS Development
    React
    React Native
  • $50 hourly
    ⭐⭐⭐⭐⭐ 5-Star Rating ✅ A Top 3% Performer on Upwork ✅ 100% Job Success Score ✅ Top-Rated Plus Talent ✅ Microsoft Certified ✅ 5+ Years Senior Experience At Premier MSP ✅ Reliable, Professional, Friendly My Expertise: ⚡️ Microsoft Windows Server ⚡️ Microsoft/Office 365 ⚡️ Project Management/Delivery ⚡️ VMWare ESXi & Hyper-V ⚡️ Email Deliverability (DNS, SPF, DKIM, DMARC) ⚡️ Connectwise Manage/Automate/Sell, NinjaRMM, IT Glue ⚡️ Modern Workplace Adoption ⚡️ Web Hosting/SSL/DNS/Wordpress I am a Microsoft IT Engineer & Project Manager recently transitioned full-time into freelancing so as to focus on providing great service across the globe. I am a reliable and trustworthy IT Professional with a wide array of experience across sectors and technologies (Education, Legal, Hospitality, Finance, etc.). With me, you are sure to get a great solution to whatever problem or challenge you face. I will never submit a proposal for a job I know I can't do, and I take great pride in delivering a top notch result for anyone who hires me which is evident by my perfect Job Success Score and 5-star job ratings. I look forward to speaking to you about your specific project requirements soon, thanks for choosing to view my profile.
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    Microsoft SharePoint
    Microsoft Active Directory
    Microsoft Teams
    Office 365
    Microsoft Office SharePoint Server
    Windows 11 Administration
    Mail Server Implementation
    Windows 10 Administration
    Solution Architecture
    Microsoft SharePoint Administration
    Microsoft Outlook
    Solution Architecture Consultation
    Microsoft Hyper-V Server
    Microsoft Exchange Online
  • $42 hourly
    • 15 years of total experience in the IT Industry with significant seven years of experience on DevOps engineer, Build /Release, and Software Configuration Management. • Experience creating the company’s DevOps strategy in a max environment of Linux (RHEL, CentOS, Debian, Ubuntu), and UNIX administration. • Experience in branching, tagging, and maintaining the version across the environments using SCM tools like Subversion (SVN), GIT and UNIX and Windows environments. • Extensively worked on Continuous Integration and Deployment using various CI tools like Docker, Bamboo and Ansible. • Good knowledge of container-based deployment using Docker, Docker Hub, Docker registers, and working on Docker images and Kubernetes. • Experience in writing Bash, Shell Scripting, and Python Perl Scripts. Hands-on experience with SonarQube tool used for quality code with open source tools like Apache, ElasticSearch, and LogStash. • Experienced in Logical Volume Management on Linux with LVM Knowledgeable in HTTP, HTTPS, SMTP, FTP, SFTP, DHCP, DNS, SNMP TCP/IP, UDP, ICMP, VPN, POP3 protocols. • Installed, managed and configured (Postfix, Exim, Qmail, Sendmail, Dovecot, Apache, Nginx, Lighttpd, PHP, MySQL, Firewall, iproute2, DNS, FTP, DHCP, Samba, Proxy, Git, Redmine, VPN, Traffic Shaping and many more) • Installed and deployed many call-centers based on (Asterisk, FreePBX, AsteriskNOW). • Created a fault-tolerant system based on cluster technology (Apache, Nginx, HAProxy, PoundSSL, Keepalived, Percona XtraDB Cluster) • Created virtual environments that involved VMWare ESXi, Proxmox, KVM, OpenVZ • Monitoring of servers and network equipment based on Zabbix, Cacti, Nagios, Graphana, Icinga, and Munin • Backup and recovery strategies based on (Bacula, Rsync, BackupPC, Dump, FSArchive, custom scripts in Bash)
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    MySQL Programming
    PostgreSQL
    Infrastructure as Code
    MySQL
    Scripting
    Data Migration
    Network Monitoring
    DevOps
    Linux System Administration
    LAMP Administration
    Ubuntu
    System Monitoring
  • $60 hourly
    Welcome to my Upwork profile! I am a highly skilled Linux expert with a passion for web hosting and hosting panel management. With a wealth of experience in the IT industry, I take pride in delivering top-notch solutions to clients seeking reliable and efficient web hosting services. My expertise includes: ✓ Linux Administration: Proficient in setting up, configuring, and maintaining Linux-based servers, including CentOS, Ubuntu, Debian, and Red Hat. ✓ Web Hosting Management: Experienced in managing various web hosting environments, ensuring optimal performance, security, and seamless website operations. ✓ Hosting Panels: Expertise in working with popular hosting panels like cPanel, Plesk, DirectAdmin, Cyberpanel and Virtualmin, facilitating easy website management for clients. ✓ Server Security: Implementing robust security measures, including firewall setup, SSL integration, and regular security audits, to protect servers from potential threats. ✓ Website Migration: Seamless migration of websites and applications between hosting providers, ensuring minimal downtime and data integrity. ✓ Performance Optimization: Identifying and resolving performance bottlenecks to enhance website speed and overall server efficiency. My qualifications: - Bachelor's degree in Computer Science - Certification: RHCE, CCNA, CCNP, JNCIA, JNCIS - 15 years of hands-on experience in Linux administration and web hosting management for diverse clients and industries. - Excellent problem-solving skills and a strong commitment to client satisfaction. - A keen eye for detail and a proactive approach to foresee and address potential issues. I am dedicated to delivering the highest level of service and providing tailored solutions to meet the unique requirements of each client. Whether you need assistance in server setup, hosting panel management, or optimizing your web hosting environment, I am ready to help. Let's work together to ensure your web hosting infrastructure runs smoothly and efficiently. Feel free to reach out, and I'll be thrilled to discuss your project needs. Thank you for visiting my profile, and I look forward to collaborating with you! Best regards, Ganesh Dhungana
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    Asterisk
    Email Security
    Linux System Administration
    Juniper
    Network Security
    Cisco Router
    Data Center Operations
    VMware Administration
    DNS
  • $72 hourly
    For the past few years, I have been employed as a VoIP engineer and have aided numerous businesses with their customer acquisition, customer support, and overall communication through my services, including system design, setup, customisation, and maintenance. Communication is an essential element in any business, and my expertise can assist in constructing a dependable communication tool for your company. My primary areas of expertise are: - FreeSWITCH - Kamailio, OpenSIPS - Programming languages such as Python, Lua, PHP - Database management using PostgreSQL and MySQL - Server administration, Docker, and AWS. Thank you, Mohammad Kamruzzaman
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    Fax
    Node.js
    OpenSIPS
    VoIP Software
    VoIP PBX
    Flutter
    VoIP
    VoIP Administration
    FreeSWITCH
    Business with 1-9 Employees
    Django
    MySQL
    Laravel
    MongoDB
    Python
  • $15 hourly
    I am a passionate System Administrator, specializing in open-source software and IT management. I have extensive experience overseeing the development, implementation, and management of information technology systems that improve accessibility and resolve networking issues. This experience has helped me develop a range of relevant skills, including in-depth knowledge of Linux and Unix server architecture, confident project leadership, and familiarity with a range of technological applications. ✔️I resolve your situations in a practical manner, and I have the following skills: - Administration server Linux and Windows - Server Deployment - Vicidial and GoAutodial (Callcenter) - Virtualization (VMware ESXi, KVM) - Configuration Cisco Router, Switch, Mikrotik Router - Docker - Configuration Proxy Server (HAProxy, Squid Proxy, Nginx Reverse Proxy) - Automated CI/CD - DNS Server - Web Server (Nginx, Apache) - Mail server - File server - Samba Server - Cloud server (AWS and GCP) - SSL - Networks Design - Asterisk - PBX Server ( freepbx, Elastix OS) - Support Ticketing System (OsTicket) - Monitoring tools (PRTG, Zabbix, Mikrotik Dude, Nagios) - Routing - Good knowledge of Python ✔️ As a freelancer, my inbox is open "24/7". ✔️ I work in different time zones.
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    Asterisk
    CI/CD
    Mail Server Implementation
    Web Proxy
    Google Cloud Platform
    Linux System Administration
    MySQL
    Network Administration
    System Monitoring
    Virtualization
    Virtual Private Server
    Web Hosting
    Docker
    cPanel
    Amazon EC2
  • $30 hourly
    Greetings! I'm a certified Google Cloud Engineer and have 6 years of work experience in Google Workspace (G-Suite) and Google Cloud Platform. In Upwork I am focusing to deliver my services for clients who need help in Google Workspace implementation, migration & troubleshoot. Whether you need to do a small troubleshoot or enterprise level implementation or migration. I can help! below are some services I can offer to you. Google Workspace(Formally G Suite) Solutions - Google Workspace(G Suite) Account Setup with Domain Name - Help you to choose the correct plan for your company - Data Migration from any existing Server - Google Workspace(G Suite) Remote Training - Setup DNS and security records for efficient email (MX | SPF | DKIM) - Technical Support Thank you.
    vsuc_fltilesrefresh_TrophyIcon Zimbra Administration
    Cloudflare
    Google Workspace
    Google Workspace Administration
    Email Deliverability
    Data Migration
    Email Support
    Google Analytics
    Domain Migration
    Technical Support
    Google Sheets
    Workspace
    Office 365
  • $40 hourly
    A highly trained technical individual who has knowledge in security, infrastructure and all layers of the OSI; is able to handle clients and provide them substantial support needed; has excellent communication skills; can lead technical team in field works.Tracked and routed problems and submitted instant resolutions at the shortest time possible. Asterisk/Freepbx/Elastix/SwitchVox VOIP Server deployment and configuration in Linux. Asterisk/Freepbx/Elastix/SwitchVox deployment and Support in VOIP Provider Setup Asterisk/Freepbx/Elastix/SwitchVox CallCenter Solutions Asterisk/Freepbx/Elastix Cloud (AWS and Digital Ocean) based installation, Configuration and troubleshooting. Asterisk/Freepbx/Elastix Cloud (AWS and Digital Ocean) based ongoing Support Asterisk/Freepbx/Elastix/SwitchVox Outbound, Inbound routes SIP Carriers routing Asterisk/Freepbx/Elastix/SwitchVox IVR, Voice Mailbox Asterisk/Freepbx/Elastix/SwitchVox SIP/PRI settings Asterisk/Freepbx/Elastix/SwitchVox Call Recording Asterisk Dynamic logins Asterisk Real Time Database Customization of Asterisk based Voicemail service Deployment of different Text to Speech and Speech to text systems Mysql and Asterisk based dynamic IVR using Text to speech engines like Festival, Cepstral and IBM Watson Real time Asterisk deployment Freeswitch/Fusion Pbx Installation and Configuration Freeswitch/Fusion Pbx Sip Profiles Freeswitch/Fusion Pbx Dial plan and Gateways settings Freeswitch/Fusion Pbx Directory users and groups Kamailio Installation, Configuration and Troubleshooting Kamailio Registrat Server Kamailio SIP Proxy Server Kamailio Realtime Configurations Wazo Installation and configuration Wazo complete deployment solutions Wazo and IBM Watson Speech to Text API successfull Implementation Wazo endpoint configuration Wazo server SIP Trunks configuration Wazo server Incoming and outgoing call routing Microsoft Teams Inbound/outbound Calls Microsoft Teams IVR etc Vicidial standalone installation Vicidial Cluster installation Vicidial inbound Campaign Vicidial outbound campaign Vicidial Blended campaigns Vicidial Customizations and integration with Asterisk servers Vicidial Carriers Settings, Campaigns and Leads deployments Vicidial agent and non agent apis Vicidial Support and Troubleshooting Yeaster UC100 setup, configuration and routing. Databases: MySQL and Postgresql Programming Skills: Shell Scripting, Php, Python, JSON, XML and JavaScript a).Expert knowledge of Cisco ASA5505,ASA5510,ASA5520, SonicWall NSA 2400, NSA 2600, TZ170, TZ150, TZ300 and TZ400 Configuration and Deployment of ASA(s) at British American Tobacco Company Configuration and Deployment of ASA at International Resource Group Pakistan b).Expert knowledge of Cisco Rotuers and Layer2,Layer3 Switches Experience and good hand on Cisco Routing and Switching c).Expert knowledge of all kinds of VPN solution Implementation of Site to Site VPN between Telenor and CellTrack International DataCenter Implementation of Site to Site VPN between Warid and CellTrack International DataCenter Implementation of Remote Access VPN for British American Tobacco Company Implementation of Remote Access VPN solution for International Resource group Islamabad Installation, Configuration, Monitoring and Troubleshooting of Router(s), Switch(s), Firewall(s) and VPN(s) Specialties: VOIP Solutions Linux System Administration Shell Scripting Network Security Routing and Switching Network Design
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    Communications
    Phone Support
    Iptables
    MySQL
    Cisco IOS
    VICIDIAL
    VPN
    Cisco ASA
    Asterisk
    Linux System Administration
    FreePBX
    Cisco Router
    Ubuntu
    CentOS
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