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Rating is 4.8 out of 5.
4.8/5
based on 5,427 client reviews
  • $150 hourly

    • 5.0/5
    • (240 jobs)
    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!
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    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
  • $120 hourly

    • 5.0/5
    • (31 jobs)
    I am a technology expert with over 20 years of experience in providing secure, stable, and reliable computing infrastructure. My core passion is building from a blank canvas, to turn your project or product into a reality, whether it's a piece of automation or building a complete application infrastructure. I am also a "jack of all trades" administrator/engineer with experience in & exposure to a variety of industries and environments. This gives me a level of expertise that will provide you with a positive and thorough outcome to any project. My expertise includes many aspects of development, systems administration, and operations: - Infrastructure design & implementation, physical and cloud-based - CI/CD pipelines with Jenkins, Gitlab, and GitHub - Migration to self-hosted Gitlab - Microservice and container implementation with Docker & Kubernetes - Automated Linux installation & configuration - Configuration management, automation, and orchestration using Ansible and Puppet - Scripting in bash shell, Python, and Perl - Web server administration with Apache and Nginx - Java application server deployment & administration with Tomcat & JBoss - Linux server hardening & security - Virtualization using KVM and VMWare - AWS administration including EC2, VPC, S3, RDS, Kinesis, Glacier, ElastiCache, CloudWatch, and CloudFormation - Azure administration - Architect & build multi-site enterprise data centers and colocation sites - Centralized authentication using LDAP, FreeIPA, and Active Directory - Systems monitoring & alerting using Nagios and Zabbix - DNS and DHCP configuration and management - Trending analysis using Prometheus, Grafana, Graphite, Elasticsearch, and InfluxDB - High availability operations I am also familiar with Windows server & Active Directory administration, including DNS, DHCP, domain management, group policies, and user management. Client satisfaction is my top priority. I would be happy to work with you on any project, big or small, and help you accomplish your goals. I'm flexible with my working hours to meet your needs.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    GitLab
    Ansible
    CI/CD
    Git
    DevOps
    Jenkins
    Deployment Automation
    Linux System Administration
    Automation
    Docker
    Ubuntu
    Microsoft Azure
    Python
    Linux
    Amazon Web Services
  • $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.
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    Cloudflare
    MySQL
    Postfix SMTP Server
    SMTP
    Linux System Administration
    Apache Administration
    FreeBSD
    OpenBSD
    Computer Network
    DNS
    Network Monitoring
    Network Design
  • $60 hourly

    • 4.1/5
    • (280 jobs)
    Discover the benefits of working with a U.S. "Top Rated" Developer with over 17+ Years of Magento / Wordpress experience: ☑ Easy communication. No more "Oops sorry I don't understand" or mix up due to translation problems. Schedule a call with me any time to go over any new tasks or upcoming projects. ☑ Safe and Secure. 3rd world developers may not be who they say they are. They will use Upwork jobs to get onto your server and install malware and credit card siphoning programming. My identify is verified and I've been a trusted member of the Magento/Wordpress eco-system since 2007. ☑ Enterprise level ticket system. I utilize one of the top support/work flow ticket systems in the industry. You will be able to easily create new support tickets/issues with me and have your problem handled efficiently. ☑ Integration with our private GIT repository. This means that all work that is not ideal to be performed in the live admin (the majority of development work) will occur on a local development copy. All modifications are recorded in our GIT versioning system for a full history and clarity regarding changes made throughout the life of our business relationship. ☑ Full development process. Each issue/task goes through a comprehensive workflow that includes: Investigation and clarification, Development process, Quality Assurance review, Code Review, and Deployment. 20,000+ Working hours with Magento 1.x (CE and EE) and Magento 2.x (CE and EE), 10,000+ Working hours with Wordpress / WooCommerce.
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    HTML5
    HTML
    Ecommerce Website Development
    WooCommerce
    Magento
    PHP
    WordPress
    MySQL Programming
    Linux System Administration
    Ecommerce Development Consultation
    Unix
    WordPress Theme
    Magento 2
  • $40 hourly

    • 5.0/5
    • (45 jobs)
    I was work as project manager / developer golang, php, mysql, docker and devops enginer at the big team during last 5 years. I was R&D Manager at team with 15 developers and 2 devops enginer. As a team lead I was work at all projects during this time.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Automated Monitoring
    Amazon EC2
    Linux System Administration
    MySQL Programming
    CI/CD
    DevOps
    Angular 5
    Amazon ECS
    Symfony
    RESTful Architecture
    NGINX
    Laravel
    PHP
    React
    MySQL
  • $67 hourly

    • 5.0/5
    • (38 jobs)
    Proven track record of high quality products. Worked with US & European companies for 15+ years. I have professional certificates from MIT in Backend Development and Machine Learning. My services include Full Stack Web Development, Database Design, GraphQL/REST API Development, Cloud and DevOps. The main technologies I use are: Go Python PHP Laravel JavaScript, Node.js, Vue.js, React.js Google Cloud Platform / Firebase Amazon Web Services (AWS) Kubernetes, CloudRun Linux: Debian, Ubuntu, RedHat, CentOS MySQL, Mongo, RDS Redis, Beanstalkd, memcached Elasticsearch, Lucene, Sphinx Search Nginx, Apache, Varnish, Squid
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Google Cloud Platform
    API Development
    RESTful API
    Laravel
    MongoDB
    Amazon Web Services
    MySQL
    Redis
    HTML
    Vue.js
    JavaScript
    PHP
    Node.js
    React
    Python
  • $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 Arch Linux
    Docker
    Email Design
    Network Engineering
    Network Administration
    Network Monitoring
    Network Design
    Linux System Administration
    Network Security
    Network Planning
    Web Hosting
    Windows Administration
    Virtualization
    System Administration
    System Monitoring
    NGINX
  • $40 hourly

    • 5.0/5
    • (362 jobs)
    More than 15 years of working experience in networking and server administration. Administering and scripting networking applications, database applications, web applications and internet & intranet servers In position of expert engineer for networking infrastructure, IT security expert and senior linux/windows/OSX administrator In charge of designing of LAN/MAN/WAN networking infrastructure, designing and implementation of fiberoptic backbone and copper networking installation. Administration of linux servers and networking devices (switches, routers, firewalls, NAS) am in charge of more than 150 linux servers, both physical and virtual Working with L2/L3 switches, routers, firewalls, NAS devices, switching&routing protocols (RIP, OSPF, SNMP, IGRP/EIGRP, VTP, BGP). Certified Cisco and Mikrotik networking engineer. OS platforms - Red Hat/Centos, Debian/Ubuntu, Gentoo, OpenSolaris, BSD flavors, Windows, OSX Server. Networking equipment - Cisco, HP, Mikrotik, ZTE, Huawei Some of the open-source technologies and daemons I have experience with: - bash, perl and python scripting - apache/nginx web servers (standalone, or in backend mode for tomcat, with one or many virtual hosts) - mysql/postgresql database installation and administration - squid (with or without dansguardian+clamav as content filter/realtime AV) - cloud (openstack, AWS, Azure, gcloud, OVH, rackspace, digital ocean....) - snort (with BASE and Snorby as web GUI) and suricata IDS - iptables (with or without web GUI) - BIND (standalone or master/slave) - postfix (as MTA, combined with alot of different tools such as spamassassin, amavis, clamav, roundcube, postfixadmin, dovecot, cluebringer, mailgraph) - zenoss, zabbix and cacti (with plugins and OUIs) - dovecot (as pop3/imap server of choice, combined with postfix and amavis, clamav, roundcube, postfixadmin, spamassassin) - amavis (with alot of customized settings for things such as double AV scanning, DKIM support, catching of spam headers...) - spamassassin (standard and heuristic bayesian analysis, fine tuning of scoring, OCR integration, SPF integration....) - ClamAV (using both standard and unofficial virus definitions, making of 0-day virus signatures caught in the wild...) - freeradius (with MySQL backend for AAA) - samba (in all possible variatons - standalone simple CIFS sharing, member of windows AD, standalone AD controller, one of the controllers in windows AD) - pureftpd, vsftpd and proftpd (as standalone servers or with virtual users) - xen, vmware, hyperv and kvm virtualization (stock or Xenserver/Proxmox distributions) - asterisk (via Elastix linux distribution) - roundcube as preferred web-mail interface (with alot of customized plugins) - openmediavault/openfiler linux distros for NAS - HA clustering (failover based on DRBD and heartbeat/pacemaker+corosync) - NUT (daemon for UPS monitoring and controlling) - openvpn (with various configurations and backends) - pptp vpns (with various configs and backends) - all kind of linux distributions - RH, CentOS, openSuSe, Debian, Ubuntu, Gentoo, Arch.... - hardening of linux distributions (iptables, fail2bain, allow/deny mechanism, AIDE, SELinux, AppArmour, occasional pen testing) - puppet automation - rancid (centralized backup of config files) - bacula, urbackup and rsync backup
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Cluster Computing
    Plesk
    Citrix Hypervisor
    MikroTik RouterOS
    Postfix SMTP Server
    Linux System Administration
    Varnish Cache
    MySQL
    cPanel
    NGINX
    Docker
    System Monitoring
    Network Security
    Network Administration
    CentOS
  • $77 hourly

    • 5.0/5
    • (197 jobs)
    Servers administration, security hardening, malware cleanup, prevention of hackers intrusion, DevOps, DNS, email, web hosting setup, migration, troubleshooting, recovering, monitoring, automation, scripting, supporting, writing documentation. 7+ years on Upwork, individual freelancer. I offer reasonable services in areas: Security: • malware cleanup, websites recovery; • penetration testing; • security hardening for servers and websites; Web hosting: • websites migration and web hosting setup; • hosting optimizing for speed and security, troubleshooting; • DNS configuration and troubleshooting, Cloudflare automation; • setup and support hosting panels (Plesk, cPanel/WHM, HestiaCP etc); • deploy and support various CMS (WordPress, Drupal, Typo3 etc); • cloud hosing (VPS) setup and automation (DigitalOcean, Linode, Hetzner, Vultr etc); DevOps and Clouds: • automation scripting with Bash, CMD, PowerShell; • clouds service and infrastructure setup (GCP, AWS, Azure); • virtualization (Proxmox VE, Docker, Podman, Hyper-V, XEN); • Kubernetes; • CI/CD pipelines. IT infrastructure administration tasks: • monitoring and maintain of servers and infrastructures; • DNS configuration, mail servers; • mesh networks (Netmaker, Zerotier etc), Wireguard, VPN (IPSec); • servers and workstations administration (Windows, macOS, Linux); Systems and services troubleshooting, data recovery: • OS restoring and boot recovery; • data, file systems and RAID recovering; • software and systems troubleshooting.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Debian
    Disaster Recovery
    Data Recovery
    Web Server
    Scripting
    Website Security
    Web Hosting
    Cloudflare
    Proxmox VE
    Linux System Administration
    Virtual Private Server
    DNS
    Ubuntu
  • $98 hourly

    • 5.0/5
    • (21 jobs)
    I'm a senior Linux Systems Engineer/Administrator with over 20 years of experience. I started my career as a software developer but switched to Linux engineering. I’m looking for medium to long-term clients that would like to have an expert systems engineer to manage and monitor their application stacks in AWS or elsewhere. These days it is about the power of small teams to implement big ideas, let me be part of your team. I am also very proficient at tracking down difficult issues and devising a solution as quickly as possible. I'm also open to being your on-call person for your systems as long as you provide a minimum number of hours per week. I have experience managing and securing multiple Linux systems in a data center or in a public cloud (AWS/Azure/GCP/IBM Cloud/Digital Ocean/others). I've supported multiple application types running on Linux ranging from websites, VoIP stacks, databases, storage arrays, business intelligence, etc. I'm equally fluent in Redhat/Centos and Ubuntu/Debian flavors of Linux. I've used multiple tools like Chef, Grafana/Prometheus, Ansible to manage and monitor systems. I also have some experience administering Windows servers, mostly with Linux integration or running specialized applications on Windows. I'm also well versed in using technologies like TeamViewer, $lack, Teams, IRC, Jira, Wikis and other tools for remote collaboration. I'm using GPT-4 to increase productivity and multiple GPTs to diagnose issues quickly. I've also integrated the OpenAI API to some simple applications with GPT-4 and can suggest how to scale such systems. Technology Summary: Apps/Tools: Apache/nginx Web Stack, Chef Server, Grafana/Prometheus, Wazuh, Ansible, Wordpress, Jenkins, Git/Gitlab/Github, Distributed Crypto Ledgers, ChatGPT/GPT-4 api Operating Systems: Redhat/Centos, Debian/Ubuntu, MacOS X, Windows Server 2008R2 Languages: Python, Ruby, PHP, Golang, Bash, Java Databases: MySQL, PostgreSQL,MongoDB, Oracle Cloud Providers: AWS, Azure, Digital Ocean, Google Cloud, IBM Cloud Networking: Cisco switches, Artista switches, Netscaler LBs, AWS ELB, Linux networking/firewall Hardware: IBM Servers, Dell Servers, HPE Servers, HPE 3Par SAN, Dell EqualLogic SAN, IBM Block & File Storage, APC PDUs Virtualization: Proxmox VE, KVM, Oracle VM, VirtualBox, VMware, Xen 4, Docker/Containers
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    MLOps
    AI Model Integration
    LangChain
    AI Builder
    Large Language Model
    Linux
    Cloud Computing
    Systems Engineering
    Security Infrastructure
    Linux System Administration
    OpenAI API
    PostgreSQL
    Python
    Amazon Web Services
    MySQL
  • $39 hourly

    • 5.0/5
    • (124 jobs)
    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).
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    CentOS
    Ubuntu
    System Administration
    Apache Administration
    SSL
    Let's Encrypt
    Linux System Administration
    Firewall
    Red Hat Administration
    Internet Security
    Cloudflare
    Zimbra Administration
    Unix System Administration
    Network Security
    Network Administration
  • $50 hourly

    • 5.0/5
    • (190 jobs)
    I have 12 years of System Administration experience, in companies providing outsourcing services to Fortune500 enterprises around the world. What can I do for you: - migrate all kind of sites (from Wordpress to more complicated) to Amazon AWS, Ovh.ie, DigitalOcean, and any other providers. - configure various AWS Services (Ec2, CloudFront, RDS, Aurora, S3, SES, SNS, etc); - perform any kind of administrative work on your Linux Servers (install software, configure services, setup backups, etc); - create any kind of automations; - write scripts in Bash, Perl, Python; - configure monitoring systems using Nagios. I know how to install/configure/code: Web: apache, nginx, haproxy. Can recompile if needed, can install and compile modules. DB: Mysql (proficient), SQL Server (proficient), PostgreSQL (moderate). Programming Languages: Perl, Bash, PowerShell, JavaScript, Python. Monitoring Systems: Nagios (and derivatives), munin, monit. DNS: any system. Email: sendmail, exim, postfix. Hosting Panels: cPanel, Directadmin, VestaCP, ISPconfig. Virtualization: Amazon AWS - expert. Any other - can do. I'm an excellent learner, for a task I learned PowerShell in 5 hours (sufficient enough to make a pretty complex automation). For another task I learned JavaScript in 8 hours (sufficient enough to make a great Google Apps Script automation). It took me 3 days (24 cumulated hours) to learn Python. So if there is a technology not listed here, I either know it but didn't list, to save space, or I can learn it very quickly.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    DevOps
    Linux System Administration
    Python Script
    Nagios Core
    AWS Server Migration
    Website Migration
    LAMP Administration
    Bash Programming
    System Monitoring
    Apache HTTP Server
  • $150 hourly

    • 5.0/5
    • (102 jobs)
    Telecommunication and Systems engineer with a focus on Cloud, Networking and Linux, experience in Infrastructure management and deployment. Deployed Private Cloud infrastructure, Datacenter Network Design for Multi-tenancy, fault-tolerant design, NIC Bonding and VRRP for High Availability. Stack: *Full virtual networking with vSwitches and vRouters *VLAN, VxLAN, GRE and Overlay tunnels *IPv6 *MP-BGP, EVPN *Firewalling *VPN/OpenVPN/IPSec/WireGuard/Site to Site and Client-Server * VPP/DPDK for 100G VPN and routing *Advanced Linux management: IPTables, Kernel modules, Virtualization, Networking. *Traffic engineering *Advanced StrongSwan IPSec tunnels, XFRM *Cloudstack with Open vSwitch *OpenNebula with Open vSwitch *OpenDaylight SDN controller with OpenvSwitch *Advanced Proxy setup with Squid/Nginx *Virtuozzo and OpenVZ *KVM and Libvirtd *RADIUS and FreeRADIUS *Pacemaker/Corosync/Keepalived HA cluster *MTLS design and implementation with NGINX *IoT gateway implementation with Raspberry Pi and 4G modems *DevOps experience with Chef and Ansible *Bash and Python scripting
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Internet of Things
    Apache CloudStack
    Linux System Administration
    OpenVPN
    Computer Network
    Private Cloud
    Kernel-based Virtual Machine
    System Administration
    Firewall
    Ubuntu
    Network Security
    Linux
    Internet Protocol Security
    Network Engineering
    VPN
  • $50 hourly

    • 5.0/5
    • (8 jobs)
    Seasoned DevOps consultant with 14+ years in IT, specializing in high-quality, scalable, and secure solutions. Expertise includes AWS, Kubernetes, Docker, CI/CD, and Terraform, coupled with extensive database experience. Proven track record implementing efficient CI/CD pipelines (GitLab, Jenkins, AWS Pipeline) resulting in reduced deployment time and enhanced system reliability. Proficient in various AWS services (EC2, S3, RDS, EKS, ECS, Security services) for high-availability solutions. Adaptable to industry trends, staying current with DevOps and AWS advancements, including Kubernetes and serverless architecture. Confident in streamlining deployment, strengthening security, reducing costs, and improving system reliability for your organization. Fluent in English, embracing communication as yet another solution to many ops issues.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    HashiCorp Vault
    Kubernetes
    Windows Server
    WSO2
    Scripting
    Linux System Administration
    DevOps
    Terraform
    Amazon Web Services
    Jenkins
    Deployment Automation
    Infrastructure Management
    Docker
    CI/CD
  • $15 hourly

    • 5.0/5
    • (4 jobs)
    I am skilled professional in the field of IP Networks , Mobile Packet Core Networks, Netowrk software development and process automation with more than 15-year industry experience. IP Network network related troubleshooting, configuration, designing ,Network Process Automation,Network Software Development, Linux System administration, Network security configurations such as VPN,Firewall ,Web developments are my key areas as freelancer. I have more than 15 years of industry experience above areas. I am looking forwards to accept projects related to above areas with reasonable low rate since I am new to upwork.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Multiprotocol Label Switching
    Network Engineering
    Automation Anywhere
    Network Design
    IPv6
    PHP
    Python
    Web Application
    C#
    Huawei AR
    Network Administration
    Cisco Router
    C
    Linux System Administration
    Firewall
  • $55 hourly

    • 4.9/5
    • (392 jobs)
    I am working: - 20+ years on IT - 10+ years on AWS Cloud projects I am a team leader of AWS Advanced Consulting in multiple projects. Self-starter who applies individual initiative to complete the job on time and provides operational and automation support with a 24/7 technical response team staffed by AWS.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Docker
    Ansible
    Terraform
    PHP
    CI/CD
    Kubernetes
    Web Service
    MySQL
    DevOps
    Solution Architecture
    Linux System Administration
    Python
    System Administration
    Linux
    Amazon Web Services
  • $100 hourly

    • 4.9/5
    • (1,068 jobs)
    No voice chat. AWS Expert - EC2, RDS, Load Balancing, Auto Scale, S3, Cloudfront, VPC, Route53, Workspaces, Workmail, Codedeploy, costs optimization. Microsoft Azure, Google Cloud - environment configuration, migrations, infrastructure analyzing and optimization. Cloudflare configuration. Server performance optimization - Apache, Nginx, Varnish, Mysql/MariaDB, php-fpm. Wordpress - performance optimization, security, migrations, malware clean up. Prestashop - AWS deployment, nginx configuration. Server and configuration optimization, security and speed up. Prestashop to WooCommerce migrations. Magento - security, migrations, environment configuration, performance optimization. Matomo, Sendy, Jira, OwnCloud, OpenVPN - installation, configuration, performance optimization. Dedicated Servers and VPS setup, configuration, security - both Windows and Linux. Work with CentOS, Ubuntu, Debian, Amazon Linux, FreeBSD, Windows 2003/2008/2012/2016 Servers. Server administration Panels, setup and configure - Plesk, DirectAdmin, WHM, Cpanel, Webmin, WHMCS, VestaCP, CWP. MySQL, MSSQL, Apache, IIS - setup, configuration, optimize for performance.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    cPanel
    Linux
    PrestaShop
    Zen Cart
    Ubuntu
    Domain Migration
    Linux System Administration
    CentOS
    Amazon EC2
    WordPress
    Amazon Web Services
  • $70 hourly

    • 4.9/5
    • (117 jobs)
    Hello, my name is Andrii. In my childhood, I spent a lot of time with a soldering iron, making different interesting things. At high school, I got a PC at home and started... Dos, Win, Linux, FreeBSD. At the present time, I have more than 20 years of Win experience and more than 16 years of *nix experience. I like to build systems and solve interesting issues. OS - FreeBSD, Linux (CentOS, Alma, Rocky, RHEL, Ubuntu, Debian, Gentoo, etc), Windows (3.1-2019) Virtualization - vSphere 5.x, 6.x. Standalone ESXi and clusters with SAN storages (iSCSI). KVM, Proxmox, oVirt. Veeam BnR, XSI-backup. VmWare Workstation, VirtualBox. Web servers - Apache, Nginx, Lighttpd, Tomcat DB servers - MySQL, MariaDB, Postgresql, MongoDB Mail - Postfix, Courier/Dovecot/Cyrus, Rspamd, Postgrey, Clamav, PostfixAdmin, SquirrelMail, Roundcube, Sendy, AWS SES. I have experience with WHM/cPanel, Plesk, VestaCP, Virtualmin, ISPmanager, but I don't like control panels (most projects are optimized for best performance, and there is no place for CP). If needed, I can learn and work with any control panel. Samba3+LDAP, Samba4 domains (about 500 user accounts, GPO, Roaming profiles, a lot of other stuff). Standalone samba servers. Docker, docker-compose, Jenkins, Ansible. FreeNAS, TrueNas. Squid (LDAP auth, AD auth, basic auth, Kerberos), FTP, SFTP, DHCPD, BIND, TFTP, DAViCal, tinc, mpd5, quagga, BGP, NFS, rsync, snapshot, rclone, Zabbix, SVN, GIT, Moodle, NextCloud, OnlyOffice, BigBlueButton, Caddy, etc. Dell servers, Dell PowerVault MD storages, HP servers, SuperMicro servers, and usual PC hardware. HP, 3Com, Dell switches, no Cisco experience. DD-WRT, including cross-compiling software from sources for this firmware for ARM arch. Shell, PHP scripting I have a lot of other expertise. Feel free to ask.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    VMWare
    Virtualization
    LDAP
    Dovecot
    Linux System Administration
    FreeBSD
    Windows Administration
    MySQL
    PostgreSQL
    Postfix SMTP Server
    DNS
    NGINX
    CentOS
    Linux
    Ubuntu
  • $250 hourly

    • 5.0/5
    • (380 jobs)
    Hello, I am a senior software engineer and consultant whose interest in the IT and web industry was sparked by the creation of my first website in 1997. A few years after graduating in this field, I embraced a career as an IT consultant with industry leaders like Deloitte and Accenture, and took on technical roles at companies such as Google, Vodafone, Yahoo, Singtel, and several other multinational corporations across Europe, the USA, and APAC. I have developed a longstanding passion for open-source projects and WordPress, which eventually led me to author a popular open-source speed optimization plugin, Fast Velocity Minify. It is published on wordpress.org and boasts over 80,000 users and an average rating of five stars. Remarkably, WordPress has seen a significant rise in popularity over the past decade, and as of 2024, it is estimated that 43% of all websites on the internet use it for various purposes, both big and small. I offer specialized consulting in this field, involving complex architectural issues, scalability, performance, security, customization, cost reduction, efficiency, API interconnection and others. I can empower your organization with strategic insights across a wide array of business and technical decisions, and leverage my experience in problem-solving to enhance the operational efficiency of your WordPress systems. I am a TOP RATED PLUS member on Upwork (top 3%), but please read through my clients reviews to understand the quality of my work. I am available for consulting on a range of projects, depending on my availability, including: - Consulting: Problem solving, project management, hiring IT talent, architecture planning, etc. - IT Planning: Assistance from inception to launch for your ideas, etc. - Development: AI integration, web services, web scrapers, data mining, data science, etc. - Speed Optimization: Enhancing web vitals, PageSpeed Insights, GTmetrix, CDN services, etc. - Security: Malware removal, security auditing, DDoS protection, tools like Cloudflare and Sucuri, etc. - Server Management: Expertise in MySQL, Nginx, Apache, LiteSpeed, Redis, Memcached, Elasticsearch, etc. - Hosting Solutions: Google Cloud, AWS, Digital Ocean, WP Engine, Kinsta, Cloudways, CDN services, etc. - Maintenance: Backups, migrations, cloning, auditing, etc. Thank you for reading!
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    MySQL
    Linux System Administration
    WordPress
    Page Speed Optimization
    PHP
    API Development
    Performance Optimization
    WooCommerce
    NGINX
    Amazon Web Services
    Google Cloud Platform
  • $100 hourly

    • 4.9/5
    • (93 jobs)
    -AWS Solution Architect Professional and DevOps Professional. -AWS Cloudformation Expert. -Terraform Expert. -Deep experience in AWS Services: EC2, ECS, ElasticBeanstalk, Route53, S3, RDS, WorkSpace, CodePipeline, CodeDeploy,CodeBuild, ... -Web Hosting Expert. -AWS Migration Expert. -BashShell and PowerShell scripting expert. -AWS CI/CD -Linux Administration. -Windows Administration. -Good experience in AD and DC. -Good experience in MySQL and MSSQL. -Good experience in networking and security. Certificates: 1. AWS Certified Solution Architect Professional. 2. AWS Certified DevOps Engineer Professional. 3. AWS Certified Solution Architect Associate. 4. AWS Certified Developer Associate. 5. AWS Certified SysOps Administrator Associate.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    SSL
    AWS CloudFormation
    Linux System Administration
    Amazon EC2
    Amazon Elastic Beanstalk
    Amazon S3
    Amazon ECS
    Cloud Computing
    Microsoft Active Directory
    Terraform
  • $45 hourly

    • 5.0/5
    • (41 jobs)
    Over 15 years of experience. IT consulting, infrastructure design, server setup and maintenance, networking, security audit, backup and recovery, monitoring, performance optimization, troubleshooting, automation tasks. Complex solutions and technical documentation. Any kind of hardware and software for Unix-like operating systems. Web, CI/CD, DB, Mail, DNS, cloud services, etc.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    CI/CD
    Cryptocurrency
    Server
    Database Administration
    Linux System Administration
    Mail Server Implementation
    Network Administration
    Web Service
    SSL
    Amazon Web Services
    Security Management
  • $150 hourly

    • 5.0/5
    • (31 jobs)
    Are you looking for a Cloud DevOps/ SecOps Engineer with expertise in automation and keeping it secure? Look no further! Hello, my name is Jerry, and I am a Cloud DevOps/ SecOps Engineer with extensive experience in building cloud infrastructure, automating everything, and keeping it secure. Here are some of my technical highlights: Security • Cloud security • HIPAA/ PCI/ NIST/ SOC 2 • Best Practices • Vulnerability Management • SAST/ DAST • Audits Programming Languages • bash • golang • nodejs • php • python Configuration Management • CDK, CloudFormation, Serverless, Terraform • Ansible, Chef, SaltStack CI/CD • AWS CodePipeline/CodeBuild • BitBucket • GitHub • GitLab • Jenkins Infrastructure • Autoscaling and Load Balancing, Containers, Serverless, and more. • API Gateway, CloudFront, CloudTrail, CloudWatch, Cognito, Config, Control Tower, DMS, EC2, ECS/Fargate, ElastiCache, GuardDuty, Inspector, Kinesis, Lambda, RDS, Route53, S3, Security Hub, SSO, VPC, and more. As a Cloud SecOps/ DevOps Engineer, I believe in automated and reproducible infrastructure that is secure to meet your security and scaling requirements. I have over 12 years of experience in engineering that can help with your infrastructure, automation, and security needs. Send me a job invite to discuss how we can work together to fulfill your needs.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Automation
    Serverless Computing
    DevOps
    Linux System Administration
    Systems Engineering
    Cloud Architecture
    Containerization
    CI/CD
    API
    Python
    Amazon Web Services
    Application Release Automation
  • $50 hourly

    • 5.0/5
    • (26 jobs)
    Organised, communicative, hardworking DevOps System administrator. I love what I am doing, my job is my passion. In recent years I have engaged in DevOps and System/Network Administrator, experienced in the implementation of different projects from simple site to startup with big community. I believe that only hard and honest work can bring needed result. Here are my best skills: Platforms: Linux (RHEL / CentOS, Ubuntu Server / Debian), FreeBSD, Microsoft Windows Server 2003/2008/2012R2/2016/2019 DevOps: GIT, Jenkins, Docker, Ansible, Icinga, Kubernetes Network solutions: Cisco routers, Mikrotik RouterOS, Hewlett-Packard ProCurve Web Server: Apache, NGINX, IIS Mail: Postfix, Dovecot, Cyrus IMAP and others Databases: MySQL, PostgreSQL, MSSQL Virtualization: KVM, Xen, OpenVZ, HyperV Cloud Technologies: Amazon Web Services (AWS), DigitalOcean Security tools: iptables, pfSense, VPN, OpenSSL Additional skills: VoIP services (Asterisk, FreeSWITCH, Cisco) Programming: BASH Diagnostic services: Nagios, Icinga, Zabbix, Grafana
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Database Administration
    Linux System Administration
    Plesk
    Technical Support
    Windows Administration
    cPanel
    Network Administration
    Ansible
    Git
    Amazon Web Services
  • $35 hourly

    • 4.0/5
    • (11 jobs)
    My primary experience is Systems Administration with linux where my major responsibilities include building and support infrastructure for sofware engineering teams in different locations. Work with cloud environment like Rackspace, Linode, Digital Ocean and AWS. Also experienced in Devops using tools like Docker, Ansible, Kubernetes, Vagrant, Terraform, Jenkins including buiding custom tools to automate CI using web technologies and scripting languages. Lead software engineering team to build products for both internal and external customers in multiple geographical locations building projects in various programming languages ranging from Shell scripts, Powershell, Web technologies, C/C++, Java to Golang. I have a Bachelor Degree in Computer Science from Kwame Nkrumah University of Science and Technology in Ghana and a Masters Degree (Mphil) in Computer Science also from Kwame Nkrumah University of Science and Technology in Ghana. I am also LPI and CCNP Certified I am flexible to project demands and shifting of priorities because I work strictly with deadlines. I also love to learn and gain more exposure to new ideas especially to achive my client's goals. Looking forward to working with you.
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Linux System Administration
    DevOps
    ELK Stack
    Database Management
    CI/CD
    Ansible
    Docker
    Golang
    Terraform
    Kubernetes
  • $40 hourly

    • 4.8/5
    • (19 jobs)
    - Clouds (AWS, Azure) - Containers (kubernetes, docker) - CI/CD (github, bitbucket, jenkins etc) - Network administration (Cisco, Juniper, D-link, TP-link). - Linux system administration - Software programming (C/C++, python) - Web programming (PHP, HTML, CSS) - Web scraping (bash, python, js), Data entry and research 10+ years of experience
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Kubernetes
    Digital Engineering
    Bash Programming
    CI/CD
    HTML
    Security Engineering
    PHP
    Unix
    C
    AWS Systems Manager
    Linux System Administration
    Azure DevOps
    Internet Security
    Python
  • $90 hourly

    • 4.9/5
    • (513 jobs)
    Top-ranked self-motivated professional DevOps and Cloud architect with strong work ethic and productive self-starter – proven with success being a freelancer at Upwork(ex-oDesk). Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals. Among my long-term customers: - Stanford University - Motorola - Bwin Interactive - Fairchild Semiconductor - Texas Instruments Effective leader - Took over leadership and managed team resources to achieve goals meeting deadlines Experience: 24+ years as an Systems Administrator 17+ years as Network Engineer 12+ years as Cloud Expert and SaaS Architect 8+ years @ DevOps Freelancer for last 14 years (over 70,000hrs worked @oDesk/Upwork)
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Deployment Automation
    CI/CD
    Docker
    Linux System Administration
    Unix Shell
    DevOps
    MySQL
    Network Administration
    Amazon Web Services
  • $40 hourly

    • 4.8/5
    • (37 jobs)
    Hi, My name is Valentin Kim. In my portfolio you can find a few of the technologies that I've successfully working with. I believe my strong points are my punctuality and perfectionism. My #1 goal will always be to meet your needs the best way possible. When working on a new project, I like to speak with the client, so that I can have absolutely clear understanding of her/his needs and vision of the project. Since 2007, I'm working as system administrator in companies from 50 to 600 employees and have rich experience of investigating and solving different kind of problems. Please take a note that I just started my career as freelancer on Upwork. Thank you in advance for your time and consideration. I have a Bachelors in Software Engineering from Qostanay Social Technical University, in the Kazakhstan. Listed below are my experience and skills. - OS: Linux, Windows, FreeBSD; - Networking: TCP/IP stack, MikroTik RouterOS, *nix iptables; - Virtualization: XenServer, VMWare ESXi; - Storage: Nexenta, ZFS, iSCSI SAN - Scripts: *nix bash, DOS batch files, Windows Powershell; - Programming: Python, Perl; - CMS: Puppet, Ansible; - LAMP stack administration; - Directory services: Active Directory, OpenLDAP; - Email: Microsoft Exchange 2003-2013 administration, Kerio Connect mail server, Linux postfix; - VCS: Git, Subversion; — Bug/Issue trackers: Jira, Redmine; — SQL: MySQL, PostgreSQL, MS SQL administration;
    vsuc_fltilesrefresh_TrophyIcon Arch Linux
    Scripting
    Network Administration
    Virtualization
    Linux System Administration
    Puppet Administration
    LAMP Administration
    MikroTik RouterOS
    Python
    Windows Server
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