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  • $50 hourly

    • 4.8/5
    • (135 jobs)
    ## BIO Over 25 years of experience in IT. Over 20 years experience as Systems/Network Administrator for Internet Service Providers. Designed and implemented networks, including WANs, LANs utilizing wired and wireless technologies. Provided server administration for production SaaS website and eCommerce sites, including PCI DSS security compliance. ## Area of Expertise Operating Systems: Linux, FreeBSD, OpenBSD, RedHat, CentOS, Debian, Ubuntu, OpenSuSE, Windows Server (2000-2008). Routers: Mikrotik, Linux, low-end Cisco, SoHo routers. Networking: wireless, wired, LAN, WAN, switches, cabling. Server Software: Apache, Sendmail, postfix, DNS, bind, dovecot, courier, email, mail server, pop3, IMAP, WordPress, Joomla, bash, shell scripting.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Cloudflare
    MySQL
    Postfix SMTP Server
    SMTP
    Linux System Administration
    Apache Administration
    FreeBSD
    Computer Network
    DNS
    Network Monitoring
    Network Design
  • $50 hourly

    • 5.0/5
    • (87 jobs)
    I do sysadmin things including: 1.) Self-hosted Apps such as: - Nextcloud - Seafile - WordPress 2.) Virtualization and Containerization: - FreeBSD with bhyve hypervisor. - Proxmox. - XCP-ng - Docker 3.) NAS: - Synology. - TrueNAS. - Unraid. 4.) Personal self-hosted VPN servers: - OpenVPN - Wireguard - Travel router GL-iNet. 5.)I work with the following Operating Systems: - Ubuntu - FreeBSD - Debian 6.) Server storage and backups: - Rsync - Syncthing - Rclone - ZFS 7.) http servers: - Nginx - Apache 8.) Cloud Platforms and Services - AWS - Oracle Cloud 9.) Routers - MikroTik - pfSense
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Docker Compose
    Ceph
    PfSense
    Server Virtualization
    Proxmox VE
    VPN
    Virtualization
    Ubuntu
    OpenVPN
    System Administration
    Linux
    Debian
    FreeBSD
    NGINX
    WordPress
  • $50 hourly

    • 4.2/5
    • (36 jobs)
    I have experience in web design using WordPress, PHP, JavaScript, HTML and CSS. I also have experience with Linux and OpenBSD systems (web and otherwise), and I certified on Google Cloud (ACE). I specialize in WordPress. Please see the demo sites on the portfolio section for examples of my work and capacities. Hire me, and I'll make sure that you are 100% satisfied!
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Google Cloud Platform
    Virtual Private Server
    Unix System Administration
    Linux System Administration
    Web Development
    WordPress
    HTML
    PHP
    CSS
  • $50 hourly

    • 4.6/5
    • (27 jobs)
    Are you seeking a dynamic software developer to elevate your projects to new heights? Your search ends here! With expertise in C/C++, JavaScript, Python, mobile development, and operating system development, I bring a fresh perspective and a passion for creating groundbreaking solutions. ๐Ÿ’ป Desktop application ๐Ÿ“ฑ Mobile app ๐Ÿค– Automation tools ๐Ÿ–ฅ๏ธ Custom operating system ๐Ÿง  Ai-powered solution ๐Ÿ” Security Audit and Vulnerability Assessment ๐Ÿ“Š Compliance Management and Reporting -
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Google Chrome Extension
    Natural Language Processing
    Swift
    Machine Learning
    C
    iOS Development
    Android App Development
    Linux System Administration
    Mobile App Development
    Computer Vision
    Desktop Application
    C++
    JavaScript
    Python
  • $80 hourly

    • 5.0/5
    • (133 jobs)
    I have 18 years in the IT industry with extensive experience in designing, setting up, and maintaining both simple and complex cloud architectures. I work with all cloud providers and Linux flavors. Please note I do not work over screen-share * AWS Certified * Linux (All flavors, including RHEL/CentOS/Alma/Rocky, Debian/Ubuntu) * Most cloud providers (AWS, GCP, Azure, OVH, Contabo, Digital Ocean, Linode, etc) * Wordpress and most common CMSs * cPanel & WHM, Plesk * KVM, Xen, and OpenVZ/Virtuozzo * Git & Subversion * Python, PHP * Server and Infrastructure Migrations Full resume available upon request.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    SOC 2
    Security Assessment & Testing
    Cloud Security
    Security Infrastructure
    NIST SP 800-53
    Linux
    MySQL
    cPanel
    NGINX
    Ubuntu
    LAMP Administration
    PCI DSS
    WordPress
    Python
    Linux System Administration
  • $25 hourly

    • 4.9/5
    • (352 jobs)
    I'm an Opensouce addict with good hands of experience in Linux, Cloud solutions, Web servers, Server Security, Server setup, Performance optimization, DNS management. Linux Accomplishment -AWS, Google Cloud, Linode, Digitialocean, godaddy. -Jenkins , Ansible, Cloudfront, Cloudflare etc - cPanel Wordpress Joomla Plesk Drectadmin Cloudlinux Kernelcare - Trouble shooting problems related to FTP, DNS, Mail servers, Restarting & configuring web services such as http, ftp..etc - Correcting Configuration files. - Tuning up Apache Web Server, MySQL. - Trouble shooting scripting issues. - Server Monitoring and load balancing. - Hacking Detection. - Handling different Web Hosting Control Panels. - Server Disk Space Management. - Memory Management. - Installing O.S. - Installing Control Panel, Control Panel Utilities - Server Security maintenance. - Designing the firewall for the servers. - Maintaining the backups of the data on server. - Server related issue regarding cgi, perl, php etc. - Upgrading and installing utilities on server. - Upgrading Plesk Control Panel, Cpanel etc - Migration of domains and databases - Managing websites on the servers. - DDOS prevention
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Email Deliverability
    Apache Tomcat
    Scripting
    Linux System Administration
    Amazon EC2
    cPanel
    Plesk
    Virtual Private Server
    Apache Administration
    NGINX
    DNS
    Microsoft Azure
    CentOS
  • $190 hourly

    • 4.9/5
    • (502 jobs)
    Based on my 30 years of experience in the field of IT, i am able to complete complex tasks of high difficulty. Working in international corporations allowed me to have a practice with productive and expensive systems. Contracts in the banking sector has taught confidentiality and responsibility and the importance of trust. My main qualification is in system administration. From the direct assembly of the server to the configuration of the operating system. Therefore i have expert knowledge of operation systems Windows\UNIX. Server OS: Microsoft Windows server, RedHat, Ubuntu, CentOS, PopOS, Debian, other Linux.. Cloud: Amazon Web Services AWS, Google cloud GCP, Oracle cloud, Microsoft Azure, IBM cloud.. Hosters: Digital Ocean, Hetzner.. Virtualization: Hyper-V, VMWare, VirtualBox, KVM, Proxmox.. Emergency problem resolving. Web, VPN, VPS, Cloud, Virtualization. Hardware troubleshoting and repair. Security networking. Infrastructure protection. BIOS\FW recovering, updating.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Postfix SMTP Server
    Microsoft Hyper-V Server
    System Configuration
    Virtualization
    Amazon EC2
    Data Recovery
    Disaster Recovery
    Virtual Private Server
    Hardware Troubleshooting
    Linux System Administration
    System Administration
    Server Virtualization
    Windows Server
  • $50 hourly

    • 4.7/5
    • (191 jobs)
    Completed 181 out of 183 Projects with 100 % Success rate with positive feedback in this profile. +15 Years Experience, setup more than 5600 Email servers (B2B and B2C) by me and my instructions from last 13 years, I've accumulated a set of refined tactics that work. Please check following things about my work :- โœ…Setup more than 5600 Cold Email Servers from past 13 years. โœ…Setup and whitelisted more than 1200 Third Party SMTP Providers like AWS-SES, Mai Gun, Sendgrig and so on. โœ…Achieved 15 Million Emails per day in B2B Database. โœ…Implemented more than 50,000 Ipv4 and Ipv6 IP address. โœ…Worked with 3 Data center and managed +100 servers at a time. Here are some of my top skills sets which help to shortlist your right Tech . ๐Ÿ‘€ Server Level : โœ…Linux OS - CentOS, Red Hat, Ubuntu, Debian, AlmaLinux, AWS AMI Servers. โœ…MTA Backend - Power MTA by Message Bird, Green Arrow, Postfix, Exim4, Indimail, Postal. โœ…Service End - FTP, BIND, YUM, MySQL, Email Servers, NTP, SMTP and other. ๐Ÿ‘€ Application Level : โœ…Email Application : MailWizz, Mumara, Green Arrow Studio, Interspire, Mautic, NuevoMailer, Postal, โœ…PhpMailer, Swift Mailer. โœ…Email Client Apps : Postfix Admin, SqirellMail, Rainloop, Roundcube. โœ…Controll Panel : cPanel, CWP, Vesta CP, HestaCP, Virtual Min, Web Min. ๐Ÿ‘€ Third Party SMTP Providers setup : โœ…Mailgun, SendGrid, Mailchimp, Aweber, Spark Post, Mailjet, AWS-SES, G suite, Microsoft Email. ๐Ÿ‘€ Authentication and Other: โœ…Authentication :- Sender Policy framework(SPF), DKIM, DMARC, rDNS, BIMI, ARC Seal. โœ…Feedback Loop Registration : ReturnPath, Yahoo CFL, Google postmaster, SNDS-JMRP for Hotmail, โœ…Earth Link and ZOHO. Required any Services regarding above skill set? Share your company details or hit my Upwork message box, and let's discuss how we can work together.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    SendGrid
    Mailgun
    Klaviyo
    Email Campaign Setup
    Linux System Administration
    Email Marketing Consultation
    Mail Server Implementation
    Interspire
    MailWizz
    Email Marketing Strategy
    Email List
    Email Security
    Email Marketing
    Postfix SMTP Server
    Affiliate Marketing
    Email Deliverability
  • $200 hourly

    • 5.0/5
    • (191 jobs)
    ๐—œ'๐—บ ๐—ฎ๐—ป ๐—ฒ๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜ ๐˜€๐—ฒ๐—ฟ๐˜ƒ๐—ฒ๐—ฟ ๐—ฎ๐—ฑ๐—บ๐—ถ๐—ป๐—ถ๐˜€๐˜๐—ฟ๐—ฎ๐˜๐—ผ๐—ฟ & ๐—ฐ๐—น๐—ผ๐˜‚๐—ฑ ๐—ฎ๐—ฟ๐—ฐ๐—ต๐—ถ๐˜๐—ฒ๐—ฐ๐˜ ๐˜„๐—ถ๐˜๐—ต ๐—ฑ๐—ฒ๐—ฐ๐—ฎ๐—ฑ๐—ฒ๐˜€ ๐—ผ๐—ณ ๐—ฒ๐˜…๐—ฝ๐—ฒ๐—ฟ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ; ๐—ต๐—ฒ๐—ฟ๐—ฒ ๐˜๐—ผ ๐—ต๐—ฒ๐—น๐—ฝ ๐—ฎ๐—น๐—น๐—ฒ๐˜ƒ๐—ถ๐—ฎ๐˜๐—ฒ ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ฝ๐—ฎ๐—ถ๐—ป ๐—ฝ๐—ผ๐—ถ๐—ป๐˜๐˜€! ๐—œ ๐—ฝ๐—ฟ๐—ถ๐—ฑ๐—ฒ ๐—บ๐˜†๐˜€๐—ฒ๐—น๐—ณ ๐—ผ๐—ป ๐—ฝ๐—ฟ๐—ผ๐˜ƒ๐—ถ๐—ฑ๐—ถ๐—ป๐—ด ๐˜„๐—ต๐—ถ๐˜๐—ฒ-๐—ด๐—น๐—ผ๐˜ƒ๐—ฒ ๐—ฐ๐—ผ๐—ป๐—ฐ๐—ถ๐—ฒ๐—ฟ๐—ด๐—ฒ-๐—น๐—ฒ๐˜ƒ๐—ฒ๐—น ๐˜€๐˜‚๐—ฝ๐—ฝ๐—ผ๐—ฟ๐˜. ๐—–๐—ต๐—ฒ๐—ฐ๐—ธ ๐—ผ๐˜‚๐˜ ๐—บ๐˜† ๐—ฟ๐—ฒ๐˜ƒ๐—ถ๐—ฒ๐˜„๐˜€; ๐—บ๐˜† ๐—ฐ๐—น๐—ถ๐—ฒ๐—ป๐˜๐˜€ ๐—ฟ๐—ฎ๐˜ƒ๐—ฒ ๐—ฎ๐—ฏ๐—ผ๐˜‚๐˜ ๐—บ๐˜† ๐˜€๐—ฒ๐—ฟ๐˜ƒ๐—ถ๐—ฐ๐—ฒ๐˜€. ๐—”๐—ป๐—ฑ ๐—œ'๐—น๐—น ๐—ฏ๐—ฒ ๐˜€๐˜‚๐—ฟ๐—ฒ ๐˜†๐—ผ๐˜‚ ๐—ฑ๐—ผ ๐˜๐—ผ๐—ผ! ๐Ÿ“ž Invite me to your Upwork job to book a free consultation call. Iโ€™m not your average tech. As a member of your team, I go above and beyond to provide you with an exceptional experience: โœ… Unparalleled reliability, patience, communication & professionalism โœ… Over a decade of server/system administration experience โœ… 100% track record with over 5,000 Upwork hours โœ… Exceptional problem-solving skills โœ… Very fast learner of new technologies Here are just a few of the technologies & service providers that I have extensive experience working with: ๐Ÿ›  Amazon Web Services AWS (EC2, RDS, S3, Route53, Lamda, +) ๐Ÿ›  Google Cloud Platform & Google Suite Administrator ๐Ÿ›  Azure Cloud Architect & Server Administrator ๐Ÿ›  Digital Ocean, Linode, Godaddy, Bluehost, Hostgator & many other hosts ๐Ÿ›  cPanel/WHM, Plesk, Webmin, DirectAdmin, No Panel Servers ๐Ÿ›  LAMP stack (Linux, Apache, MySQL, PHP) โšก I am fully insured with $1,000,000 in professional liability coverage. Anyone touching your critical servers should be! I specialize in server & application security, performance optimization, and on-demand support services. However, the list doesnโ€™t end there. Iโ€™ve spent every working day of the past decade putting out fires. Iโ€™ve dealt with hacked servers & websites, mission-critical technical failures, application failures, and many other issues. It has been my utmost pleasure to take on the challenge of both resolving the technical issues while providing customer service with a smile during the most difficult of times. Being the best in class, excellence requires effort. Simply meeting expectations is not sufficient. Anticipating and satisfying oneโ€™s unknown needs is what makes for an incredible consultant. Beyond my technical skills, these are lessons the past decade has afforded me. โญโญโญโญโญ ๐Ÿฑ-๐—ฆ๐˜๐—ฎ๐—ฟ ๐—ฅ๐—ฒ๐˜ƒ๐—ถ๐—ฒ๐˜„๐˜€ โ Steven is the best freelancer I have ever hired (and I have hired very many in various venues). Whipsmart, committed, and conscientious, I am utterly blown away by the quality of his work, and of his funny, personable manner. Highest possible recommendation. โž โ Steven is fantastic and goes above and beyond for his clients. We will 100% use him again and recommend him enthusiastically. THANK YOU! โž โ Steven is amazing. Hire him before he raises his rate. Super helpful and responsive. If you need help with anything related to servers, hosting, migration, performance optimization, WordPress support, security or overall optimization, look no further. โž โ Steven is a Gem. Simply put, Steven is the most knowledgeable IT person I have ever met. He helped me navigate through a very delicate situation that threatened to shut down my business completely. Without Steven, I probably would have had to close down my business and let my people go. He has a DEEP working knowledge of servers and server admin as well Wordpress and many other tools. He is EXTREMELY Professional and a great communicator. I will hire Steven again. โž I can support you withโ€ฆ + Linux & Windows Server Administration + Cloud Architecture, Performance & Cost Optimizations + Best practice performance optimization, server security & on-demand support. + Deployment of elastic cloud server clusters. + Managed migrations & system upgrades. + Mitigation of DDoS attacks & other malicious activity. + PCI Compliance & Resolution of failed vulnerability audits & scans. + Application Support - WordPress, Moodle, Magento, WHMCS, Drupal + Disaster Recovery - Backup plan creation & testing. + Additional Web Host Support - When your hosting provider drops the ball. + Mail Security & Authentication - SPF, DKIM, DMARC Support + DNS Management + Project Management + Customer Support + Marketing - PR, SEM (search engine marketing), Pay-Per-Click (PPC) on Google, Bing, Facebook, Twitter, and others. Extensive SEO work (on-page & off-page optimization). Re-targeting campaigns (Adroll, Perfect Audience, Google, Facebook, Youtube) Affiliate marketing via directly managed programs & third-party networks (CJ, Shareasale, ClickBank, Pepperjam, and others.) Mail marketing automation (Mailchimp, Infusionsoft, Marketo, Convertkit) and many CRM systems. + Development - PHP & Python. + Business Management - I've worn many other hats during the management of my business, including work in HR, support, sales, finance, marketing, PR, etc. I'd love to use this experience to help you out! Drop me a line to further discuss your needs. Thanks, ๐—ฆ๐˜๐—ฒ๐˜ƒ๐—ฒ๐—ป ๐—›. ๐—–๐—น๐—ฎ๐—ฟ๐—ธ๐—ฒ Clarkes.Team
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Amazon Web Services
    Google Cloud Platform
    DigitalOcean
    Website Optimization
    PCI
    Keap Marketing
    Malware Removal
    PHP
    Cloudflare
    Vulnerability Assessment
    Mailchimp
    Linux System Administration
    Magento
    WordPress
    Workspace
  • $50 hourly

    • 4.9/5
    • (328 jobs)
    Certified AWS Solution architect. I am having more than 12 years of experience in Installing, configuring and administrating various type of *nix servers using various opensource and closed source software for various customer requirement in the industry. My major expert areas in summary:- #Cloud environment :- Amazon Web Services, Google Cloud, DigitalOcean #Email deliverability: PowerMTA, Interspire, MailWizz, Amazon SES #Operating Systems :- Redhat, CentOS, Ubuntu, Dabian, Gentoo, HP-UX, Aix, SunOS,. Windows workstations and Servers 2000, 2003, 2008 R2, etc., #TCP/IP networking :- Advanced ip routing, forwarding, filtering and firewall with Netfilter Iptables #servers :- Sendmail, Postfix, Dovecot, Courier IMAP, Squirrelmail, Roundcube, BIND, Apache, VSFTPD, DHCPD, Squid, Samba #Monitoring and remote admin :- Log analizing with Sarg,Monitoring serves with Nagios and icinga ,Remote desktop with FreeNX, Remote Admin SSh/Telenet #Scripting :- Bash scripting, Perl, Python #Web and Database :- postgresql, MySQL, Oracle HTML #CMS: Drupal, Magento, Wordpress Thank you. Best Regards. Fabrizio
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Docker
    Email Deliverability
    Network Administration
    Dovecot
    LAMP Administration
    Postfix SMTP Server
    Linux System Administration
    Unix Shell
    Mail Server Implementation
    Apache Administration
    Unix System Administration
    Server Virtualization
    Amazon Web Services
    NGINX
  • $40 hourly

    • 5.0/5
    • (316 jobs)
    15 Years experience as Sr. Linux Admin, Unix Admin, System Admin, Storage Admin, Server Admin, Virtualization Expert as well as Database Admin Strong experience in installing, configuring, maintaining and troubleshooting anything on Linux/Unix/Windows, Raspberry * OS: Centos, RHEL, Ubuntu, Debian, Cloudlinux, Windows * System Backup and Recovery including System boot and kernel issues * Server Security and Server Hardening: FIREWALLD, UFW, IPTABLES, Selinux, TCP Wrappers, finding security vulnerabilities and resolving the issue using audit tools. * Server Management: User/Disk/File Management, Routing, Team Bonding, Linux Network, ISCSI, Multipath, Kannel, LVM, Partitions, RAID. * System Monitoring Tools: Whats Up Gold, Netflow, IFTOP, IPTRAF, Nagios, Zabbix, OSSEC * Data Center Management: Good experience in Management of Servers on Cisco, HP, IBM, Dell, Supermicro, etc. * Hardware and Software RAID * Network Sharing: NFS, VSFTPD, Samba, etc. * SAN/NAS Storage: HP, IBM, Dell, EMC, Netapp, Lenovo, etc. * Virtualization: Virtualizor, KVM, Xen, ESXI, Oracle VirtualBox, VMware, Vcenter Converter, etc. * Configuring and Managing LAMP/LEMP (linux, Apache, Nginx, Mysql and Php), SSL/HTTPS including Letsencrypt * cPanel/WHM, Webmin, Plesk, VirtualMin * Cloud: AWS, GCP, Digital Ocean, OVH, etc * Server Architecture: NTP, SSH, SQUID, DHCP, BIND, Postfix, Sendmail, VNC, Kannel, HA-Lizard, DRBD, XCD-NG, RSYNC, ISCSI, Multipath, etc. * Applications and Open Source Tools: WHMCS, Opencloud, Nextcloud, Zulip, OpenVPN, Polr, Odoo, Advandate, Openmeetings, TOR, Keycloak, Rocket chat, Opencanary, eSignForms, Apache Nifi * Linux Commands: Excellent Knowledge of Linux commands, Administration and Shell Scripting. * Streaming Solutions: Experience on Darwin Streaming Server, Wowza Streaming Engine, Xenon Live Encoder, Xenon Streaming Server, Xenon Streaming Mediator, Crypton Headends.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Plesk
    cPanel
    MySQL
    Virtual Private Server
    VMware ESX Server
    Linux System Administration
    Amazon EC2
    Unix System Administration
    Red Hat Enterprise Linux
    Unix Shell
    Virtualization
    SSL
    Linux
    Ubuntu
    CentOS
  • $45 hourly

    • 5.0/5
    • (177 jobs)
    Have been working for 12 years in many roles which involves Linux systems administration in Cloud and traditional Datacenters, integration and troubleshooting in different type of industries. I have managed large number of bate-metals, VMs and wide range of applications/software, you name it!. AWS Certified Soltutions Architect, CCNA and Solaris 10 certified. Whats makes me different from others is my strong foundation of system administration and experience which results in quick troubleshooting and quick adoption of new technologies and protocols.
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    Email Deliverability
    Postfix SMTP Server
    MailWizz
    Mail Server Implementation
    Scripting
    FreeBSD
    AWS Server Migration
    VPN
    cPanel
    Linux System Administration
    Email Marketing
    SMTP
    Virtualization
    System Administration
    Perl
  • $20 hourly

    • 4.9/5
    • (34 jobs)
    โ€ข More than 5 years of experience. โ€ข Strong Linux & Network / Virtualization skills. โ€ข Providing the optimization and security of my work. โ€ข I will always try to make your ideas come true. โ€ข I like to work on projects that use new technologies. โ€ข Never surrender, everything is possible!
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Kernel-based Virtual Machine
    Iptables
    HAProxy
    FreeSWITCH
    FreePBX
    PfSense
    Web Hosting
    Asterisk
    VMware ESX Server
    VPN
  • $105 hourly

    • 5.0/5
    • (33 jobs)
    I am veteran IT professional with a broad range of experience. I work near fulltime (25+ hours a week) for a manufacturing company managing their infrastructure and part time honing and growing my skills in the freelance market. Please read on to see what I have to offer. A full-range IT Systems and Network Engineer and Administrator. With 21+ years of experience in a wide range of skills with a focus on project design and implementation. Equally capable of working in Windows and UNIX environments. A broad base of general IT knowledge and a constant desire to learn and add skills have provided unique insight and abilities. Experience working with many vendors specializing in medical and enterprise systems. A broad range of experience and a lasting passion for technology combined with excellent troubleshooting and research skills makes for a valuable addition to any team. Project Highlights: Private Cloud deployment, IT systems upgrades, subject matter expert. Systems/Network Administrator for public health district hospital, responsible for setup, automation, and monitoring of private cloud. Managed the transition of legacy systems to new infrastructure. Deployed and administered monitoring and management systems. Handled special projects for the IT Director testing and deploying new systems or finding solutions to long standing issues. Overhauling of existing monitoring and asset tracking systems along with transitioning existing VMโ€™s to new High Availability โ€œA side/B side/C remote BDRโ€ Data Center design dramatically improving systems reliability, while reducing manpower requirements. Consultant for public health district hospital to deploy a private cloud. Deploy and configure a private cloud based on Cisco UCS/EMC VNX/Hyper-V 2012 R2 & VMWare VSPEX reference platform for a regional hospital. Worked closely with existing employees and vendors to assist in bringing the project to a successful completion. Kept on indefinitely to work on improving the existing IT systems including SNMP monitoring (WUG), Syslog, Helpdesk, security, and maintenance automation. The resulting changes improved network reliability and reduced the time and effort required for employees to manage the systems Cloud-based application development, project manager and project technical lead. Systems Administrator/Engineer for deployment of Cloud-based applications and integration with mobile and local systems. Researched, selected and integrated multiple cloud based products to form a completely integrated IT services management solution based on Autotask, N-Able, QuickBooks, StoreGrid, and Channel Online for MSP provider. The final solution handles quoting, ticketing, purchasing, billing and time management. Worked with several consultants and technicians to complete integration and training of employees saving on valuable internal labor and reducing data entry errors. Replacement of existing PACS/RIS solution with RAMSoft PACS/RIS solution Project lead for the replacement of an existing PACS RIS solution from RAMSoft. Worked with incoming and outgoing vendors along with third party vendors and outside providers to facilitate the removal and replacement of existing leased hardware. Coordinated integration of hardware and software from 11 vendors. Completing the project with minimal impact on office operations on time and within budget. HIPAA meaningful use EMR and specialty procedure management systems upgrades/deployments. Project lead for the upgrade and deployment of multiple VMWare server solutions for specialty medical offices. Solutions utilized a variety of hardware and software including Windows Server 2008 R2, 2012, Small Business Server 2008, SQL 2008 (R2), Linux, VMWare ESXi, Cisco hardware, Qnap NAS, HP Servers, and StoreGrid. Supporting various medical software solutions including GE Centricity EMR and Practice Management, GMed GGastro, Maximeyes, and more. Determining what to replace and what to upgrade significantly reducing the overall project cost while providing a solution that met their needs. Using VMWare and robust redundant servers reduced costs by more than 30% while maintaining performance and reliability. Providing the office with a complete solution including email server and BDR solution for significantly less than competitorโ€™s estimates. Identified key performance bottlenecks and applied solutions to complete a fast and reliable solution with complete local and offsite back and disaster recovery.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Amazon Web Services
    VPN
    Tech & IT
    VMware vSphere
    Email Deliverability
    Troubleshooting
    Cloud Computing
    Microsoft Windows PowerShell
    Microsoft Hyper-V Server
    Network Design
    Windows Administration
    Storage Area Network
    Network Administration
    Network Monitoring
    High Availability and Disaster Recovery
  • $55 hourly

    • 5.0/5
    • (18 jobs)
    โ€ข Containerization & Orchestration: Docker, Kubernetes, Helm, Rancher, ArgoCD โ€ข Virtualization: KVM and Hyper-V โ€ข Infrastructure as Code (IaC) & Automation: Ansible with AWX, Puppet, Terraform, Terragrunt, Atlantis, Pulumi, OpenTOFU โ€ข Cloud Platforms: AWS and GCP โ€ข CDN: Cloudflare and Akamai โ€ข Networking & Load Balancing: HAProxy, Twemproxy for Redis memcached and Sentinel โ€ข Monitoring & Logging: Grafana, Loki, PRTG, Nagios, ELK stack, CheckMK, Vector.dev, SNMP Exporter, Node Exporter โ€ข Databases: Redis, MySQL, MariaDB, PostgreSQL
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    HAProxy
    Ansible
    Puppet
    High Availability and Disaster Recovery
    Google Cloud Platform
    Amazon Web Services
    Kubernetes
    Docker
    Elasticsearch
    System Monitoring
    Virtualization
    Cloud Engineering
    Network Monitoring
    Database Administration
    Linux System Administration
  • $30 hourly

    • 5.0/5
    • (26 jobs)
    Greetings! I am a highly skilled and results-driven System and Network Administrator with 15 years of experience in designing, implementing, and managing robust IT infrastructures. My expertise lies in system administration, network configuration, security, and troubleshooting. I thrive in dynamic environments and excel at optimizing IT systems for peak performance. Key Skills: 1. System Administration : Linux (Debian, Ubuntu, SLES, CentOS, Fedora, Linux From Scratch (LFS)), BSD (FreeBSD, NetBSD, OpenBSD, DragonflyBSD), Windows server ( Windows NT, 2003, 2008, 2012 (R2), 2019, 2022) 2.Network Management : Network Device (Cisco, HPE, Mikrotik, Juniper, Allied Telesync),Routing & Switching (RIP, OSPF, BGP, IRF, MPLS, Load balancing), VPN, Port forwarding,Wireless Network : Aruba, Cisco Meraki, Ruckus, Unifi, radius, controller, 802.1x 3.Security Implementation : Firewall (Fortigate, Sophos, Sonicwall, ufw, firewalld, PF, OpnSense,IPFW, Iptables, VPN, SNORT, Secui, IPS, IDS, OS Hardening (Linux, BSD, Windows) 4. Troubleshooting : Network, Server, Application, log analyzing 5.Server Configuration : Mail ( Sendmail, Postfix, Exim, Dovecot, Courier-IMAP, SquirrelMail, Roundcube, MS Exchange, OWA, Kaspersky Mail System Gateway (KMSG), Zimbra), DNS (BIND, PowerDNS, Windows DNS, WINS), Web Server (LAMP/XAMPP/Apache/Apache Tomcat, IIS, Nginx), Proxy (Squid, Haproxy), Database (MySQL,MariaDB, MongoDB MSSQL, Postgresql, SQLite) 6.Cloud Computing : Azure cloud, Amazon Web Services (AWS), Google Cloud Computing (GCP) Programming : -Python (intermediate) -Shell (intermediate) Certification: : -Cisco Certified Network Associate - CCNA -Berkeley System Distribution Associate - BSDA -AWS Certified Cloud Practitioner - AWS -Certified Linux Administrator - LPIC-2 -Fortinet NSE 4 version 6.2 -Microsoft Certified : Azure Security Engineer Associate, Cybersecurity Expert Architect, Azure Solutions Architect Expert, Azure Administrator Associate -Aruba Certified Mobility Professional - ACMP Why Choose Me: -Proven track record of success in system and network administration. -Strong analytical and problem-solving skills. -Exceptional communication and collaboration abilities. Let's Work Together: I am passionate about delivering high-quality solutions and would love to contribute to the success of your project. Please reach out to discuss how my skills and experience align with your needs.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Fortinet
    MySQL
    SMTP
    Linux System Administration
    Mail Server Implementation
    Apache Tomcat
    Cisco Certified Network Associate
    Windows Administration
    FreeBSD
    CentOS
    Windows Server
    Ubuntu
  • $65 hourly

    • 4.5/5
    • (144 jobs)
    AARON SUMMERS Independent Contractor April 2009 - Current โ€ข Provide remote Linux, networking, and application support for a variety of clients around the world. โ€ข Develop a custom SugarCRM, Xero Accounting, Concrete5 web store using PHP and MySQL. โ€ข Daily maintenance and security auditing of around 30 machines. โ€ข Build complex cloud based scalable solutions on Amazon EC2. โ€ข Scripting and automation of Linux based administration tasks using Perl and Bash. โ€ข Migration of web-servers from physical to cloud based solutions. โ€ข Provide end level support for certain clients. UNIX Engineer E Solutions Corporation March 2008 โ€“ April 2009 (1 year 2 months) โ€ข Responsible for supporting the operations of a Tier-1 colocation facility. Daily engineering and administration of OpenBSD, FreeBSD, Linux and Windows based operating environments. Identified and remedied a large number of network and host based security problems. Stabilized the bandwidth billing system for accuracy and provided assistance to the web development team. UNIX System Engineer Hilton Grand Vacations November 2006 โ€“ March 2008 (1 year 5 months) โ€ข Designed and built a custom Enterprises Data Ware House utilizing RedHatโ„ข Enterprise Linux, IBMโ„ข Information Server, and the Sunโ„ข N1 toolkit. Back ported the RedHatโ„ข clustering tools and GFS modules for RedHatโ„ข Enterprise Linux 4. โ€ข Customized the operating environment for running the IBMโ„ข Information Server 8 family of applications, consisting of IBMโ„ข DB2 V 9.3, IBM WebSphere 6.0, IBMโ„ข DataStage and IBMโ„ข QualityStage. โ€ข Was the single onsite operations point for the HP-UX, Solaris, FreeBSD, MacOS X, and Linux machines. Designed and implemented the companyโ€™s external web presence using Solaris 10. Utilized zones, the ZFS file system, and hardware RAID on the T2000 platform. Wrote my own tools in Perl, C, and the Bourne shell. Debugged many complex operational problems. UNIX Administrator at Vortech, Inc. 2004 -2006 (2 years) โ€ข Responsible for the day to day operations of over 160 production servers. Maintained UNIX web, database and name servers based on FreeBSD 4.11 โ€“ FreeBSD 6.1 Built FreeBSD based servers for web hosting, backups, and network monitoring. Built Linux, Windows 2003, and Windows 2000 based servers for use in collocation. Provide phone and email support for web hosting and collocation customers. UNIX Administration and Technical Support at Magna Computer Corp September 2003 -May 2004 (9 months) โ€ข Built Linux and SCO OpenServer based servers. Provided support for custom software designed for the timeshare resort industry. Built programs and reports using technologies such as Apache, Perl, and XML. Extensive configuration and tuning of RedHat, Fedora, and SuSE Linux. UNIX System Administrator & Network Engineer at Independent Consultant November 2001 - July 2003 โ€ข Designed and implemented OpenBSD, Linux, and Windows 2000 Servers in a collocation environment. Extensive use of Apache, Perl, PHP, MySQL on UNIX. IIS Configuration experience, ASP, ActivePerl. Constructed web based application servers from scratch using previously mentioned operating systems as an install base. Console programming with C and ncurses. Experience with X11 API and GTK toolkit. Second Level Support at Jobwarehouse.com โ€ข May 2001 -September 2001 (5 months) โ€ข Supporting the primary website and data processing efforts. Networking and Integration at Magna Computer Corp September 1999 -June 2000 (10 months) โ€ข Develop TCP/IP based UNIX and Windows intranets. Provide technical support for SCO UNIX and Magnaware applications. Setup and maintain OpenBSD, FreeBSD, Linux, SCO UNIX and Windows based servers and workstations. Education Winter Park High School 1992 - 1996 โ€“ Gifted Program Valencia Community College 1996 โ€“ 1998 Contractor Recommendation "Aaron is a very good systems engineer for Linux, UNIX and Windows. He has an in depth understanding of system internals. I found him to be an honorable man that stands behind his word and keep on track of the project. He has always been friendly and a good attitude even when he is upset. He would make a good supervisor in any company." โ€” Shelton R., Sr. IT Consultant / DB2 DBA Expert, Xtivia, worked directly with Aaron at HGVC
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    MySQL
    Linux System Administration
    Virtualization
    Network Security
    Iptables
    Unix Shell
    FreeBSD
    Snort
    Amazon EC2
    Linux
    System Monitoring
    CentOS
    Apache HTTP Server
    System Administration
  • $125 hourly

    • 5.0/5
    • (16 jobs)
    I have been fortunate to teach for, or consult with, Netapp, Google, Apple, Oracle, Canonical, and Suse over the last decade after leaving Microsoft. While I do contribute a bit to open source projects in my free time, I've been mainly teaching folks how to architect their cloud environments, teaching them how to use ansible, or how kubernetes works. It's great fun, and good money, but I've been getting a bit bored not being as hands-on, so I thought I would give Upwork a try. If I reach out about working together, it's because there's something about your project that I think would be fun or interesting, and let's be honest: people do better work when they're enjoying the work they're doing. Credentials: ------------------------------------------------- * Google Cloud Certified Professional Cloud Architect | Credential ID Uj3vNA * Google Cloud Auhtorized Trainer | Credential ID 4291919 * AWS Certified Cloud Practitioner | Credential ID CDR6TCZ12MFEQ5SC * SUSE Certified Administrator (SCA) | Credential ID 10320195 * SUSE Certified Engineer (SCE) | Credential ID 10320195 * Netapp Certified Data Administrator (NCDA) | Credential ID C0YWCPD2D241YFY2 * Netapp Certified Instructor (NCI) | N.A. * Ubuntu Certified Instructor(UCI) | Credential ID 2 * Ubuntu Certified Profesional (UCP) | Credential ID LPI000174079 * LPIC-1 Linux Professional Institute (LPI) | Credential ID LPI000174079
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Terraform
    Kubernetes
    AWS Server Migration
    DevOps
    Linux
    Amazon Web Services
    Data Scraping
    Google Cloud Platform
    MySQL
    Ansible
    PHP
    Python
    Scripting
    API
    Bash
  • $40 hourly

    • 5.0/5
    • (27 jobs)
    Twenty-five years of experience in embedded software. Smart Home Automation Consultant & Integrator Payments integration POS software, EMV, PCI, ISO8583, ISO7816, DUKPT etc... RSA, ECC Linux, UNIX, C, C++ Pentester of POS hardware/software I like working in embedded hardware and creating new solutions, extending the base functionality of the original software/hardware Fuel Dispenser protocols Wayne, Gilbarco, Tokheim, Tatsuno, IFSF Tekelek ATG Fuel Tank Gauges Hydrogen/GPL dispensers POS apps in PAX, Ingenico, NEXGO and others Vending machines, MDB, Executive Extensive experience in debugging resource-constrained systems. RTOS, NuttX, FreeRTOS PLC Systems emulation Code porting ATtiny13, ATtiny45, ATtiny85 Pos terminal development MAX32660 MAX32520 ChipDNA STM32MP157C Kinetis Cypress PSOC6 ISO 11783 Emulator windows CE DOS Programming FreeRTOS, Gemalto, Nitrokey, Sentinel, HASP Raspberry CM4, CM3, Compute Module Jetson nano development and firmware OCPP Fire alarm systems conventional/addressable firmware Hitachi H8, TV Set Top Box USBTMC Hp-Ux, HpUX Allwinner Sunxi EVSE firmware RSL10 OSDP i.MX6, i.MX7, i.MX8 Lonworks echelon CORE3566, rockchip 3566 WaveShare ESP32-C6 ESP32-C3, STM32L55 Coral NPU LonWorks HL7 NAYAX CCI protocol
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    FreeRTOS
    Linux
    Firmware Programming
    Driver Development
    Cryptography
    Reverse Engineering
    Raspberry Pi Firmware
    STM32
    Embedded C
    C++
    Embedded System
    Real-Time Operating System
    Firmware
    C
    Embedded Linux
  • $15 hourly

    • 5.0/5
    • (5 jobs)
    LinkedIn - alex-fegatilli-fau50 ๐Ÿ‡ฎ๐Ÿ‡น๐ŸคŒ Professional and versatile Italian in the IT world with a strong inclination towards self-learning. My past work experience in the field of IT has provided me with a solid foundation of practical and theoretical knowledge, allowing me to face complex challenges with determination and creativity. I am driven by a passion for innovation and technology, constantly looking for new opportunities to make a significant contribution to the success of exciting and cutting-edge projects in the IT industry. Key Skills: - ๐Ÿ”๐Ÿ”’ Security Analysis: Proficient in conducting comprehensive risk assessments, vulnerability scans, and penetration testing to identify and mitigate security vulnerabilities. Skilled in developing and implementing robust security policies, procedures, and protocols to safeguard sensitive data and ensure regulatory compliance. - ๐Ÿ”๐Ÿ”‘ Cryptography: Knowledgeable in cryptographic algorithms, protocols, and best practices for securing data and communications. Experienced in implementing encryption, digital signatures, and other cryptographic techniques to protect sensitive information. - ๐Ÿ’ผ๐Ÿ’พ System Administration: Experienced in managing and maintaining complex IT infrastructures, including servers, networks, databases, email systems, and web servers. Proficient in troubleshooting issues, optimizing performance, and ensuring seamless functionality of critical systems. - ๐Ÿ›ข๐Ÿ’ฟ Oracle DBA: Expertise in Oracle database administration, including installation, configuration, performance tuning, backup and recovery, and security management. Skilled in managing data integrity, optimizing SQL queries, and ensuring high availability and scalability. - ๐ŸŒ๐Ÿ”Œ Network Administration: Proficient in designing, implementing, and managing network infrastructures, including routers, switches, firewalls, and VPNs. Skilled in optimizing network performance, ensuring data security, and troubleshooting connectivity issues to maintain seamless operations. - ๐Ÿ“ง๐Ÿ”’ Email Administration: Experienced in managing corporate email systems, including configuration, maintenance, and troubleshooting of email servers, spam filters, and authentication protocols. Proficient in ensuring email security, reliability, and compliance with industry standards. - ๐Ÿ–ฅ๏ธ๐ŸŒ Web Mastering: Skilled in designing, developing, and maintaining dynamic and responsive websites. Proficient content management systems (CMS). Experienced in optimizing website performance, ensuring accessibility, and enhancing user experience. - ๐Ÿข๐ŸŒ Systems Architecture: Expertise in designing and implementing scalable, high-performance IT architectures to meet business requirements. Skilled in evaluating technology solutions, defining system requirements, and architecting solutions that align with organizational goals. - ๐Ÿ“ˆ๐Ÿ“Š SEO/SEM/CRO: Experienced in optimizing website content, keywords, and online advertising campaigns to drive traffic, improve search rankings, and maximize conversion rates.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Technical Analysis
    Technical Support
    Linux System Administration
    Architecture Consultation
    IT Consultation
    IT Infrastructure
    Translation
    Oracle Cloud
    System Security
    Security Analysis
    Cloud Architecture
    Database Administration
    Network Administration
    Windows Administration
    Information Security
  • $96 hourly

    • 5.0/5
    • (7 jobs)
    8 years of Unix and network administration with Gentoo Linux, FreeBSD, OpenBSD. running scalable networks with DNS, setting up and maintaining web, mail, chat and file servers. Doing digital forensics in case of accidents, log analyzing, configuration checking as well as kernel hardening for information sensitive servers. Last 2 years doing Elixir and Erlang development for Scalable Infrastructure with Microservices as well as doing Automation using Shell and Ansible, configuring Cloud Infrastructures and Orchestration Systems and Container technologies such as Docker and FreeBSD Jails.
    vsuc_fltilesrefresh_TrophyIcon OpenBSD
    Security Assessment & Testing
    Information Security
    Computer Network
    Elixir
    FreeBSD
    Unix Shell
    DevOps
    System Administration
    Automation
    VPN
    Linux
  • $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 OpenBSD
    CI/CD
    Cryptocurrency
    Server
    Database Administration
    Linux System Administration
    Mail Server Implementation
    Network Administration
    Web Service
    SSL
    Amazon Web Services
    Security Management
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