Hire the Best CentOS Developers
in the United States

Clients rate our CentOS developers
Rating is 4.9 out of 5.
4.9/5
Based on 159 client reviews
Avi B.

Winter Springs, Florida

$100/hr
5.0
73 jobs

US-Based. Ex-Google Senior Systems Engineer. I have over 25 years of running Linux infrastructure, websites, system administration and technical services. I can help with: * Linux server troubleshooting, setup & security (CentOS, Ubuntu, Alma, Rocky, etc.) * Apache & nginx web servers * MySQL & MariaDB SQL servers * Email services (dovecot, exim, sendmail) * PHP, Golang, Python programming, Bash scripting * SSL certificate issues * DNS issues * Wordpress issues * Server & website migrations. * VPI/PBX: Asterisk, Kamailio, Twilio, etc. * Compiling software * Web hosting control panels (including cPanel/WHM, etc) * GCP & AWS management * Networking: VPNs, VLANs, routing, switching, DHCP, PXE, BGP, etc * SRE, Devlops, monitoring & logging, etc. After running a web hosting company for 17 years and then working as a systems engineer at Google for 7 years I am now ready to help you with your internet & website infrastructure. I live in the US, work in the Eastern Time Zone and I am available via email, WhatsApp, phone or video calls. If you need a trusted partner to work with your website or infrastructure, then look no further :)

  • CentOS
  • Computer Network
  • Computing & Networking
  • Network Engineering
  • System Administration
  • DevOps
  • Linux
  • Ubuntu
  • NGINX
  • PHP
  • Custom PHP
  • WordPress Installation
  • DNS
  • MySQL
Jeff Q.

Palmer, Iowa

$40/hr
5.0
72 jobs

Networking support: SSLs, Security, DNS, malware & virus removal, bot protection, site transfers, server support: Linux, Redhat, Ubuntu, MacOS, Windows Server, IIS and Apache. I am A+ Comptia certified with a Cisco Networking Essentials certificate, and Amazon AWS Cloud Practitioner certificate. Can build custom WordPress plugins. We specialize in WordPress and eCommerce. We can get your business up and processing credit cards with Stripe, Braintree, PayPal, Authorize .Net, or just about anyone you want. I am an experienced PHP WordPress Developer with a strong background in web development, networking and SQL. I have a proven track record of building and maintaining WordPress sites, developing custom plugins, and managing complex network systems. My expertise extends to various programming languages, operating systems, and web technologies, making me a versatile and valuable asset. Jeff has years of experience with the web technology & computer networking and holds degrees in Technology, Business, plus has numerous certifications. Network Administrator for Windows Server 2022, 2019, 2016, 2012, also for Linux Redhat, and Ubuntu. Get your business online today with a 100% PCI Compliant payment solution. Don't take chances with your customer's credit card information; risking costly charge backs, lost revenue, or legal problems. Have us do your payment forms. SKILLS: Languages/Scripts: PHP, JavaScript, MySQL, MariaDB, HTML, XHTML, CSS3, Regular Expressions, XML & XSLT, ASP, VBScript, Perl, JQuery, JSON, SOAP, Pascal, Assembly Language for 680x0 processors Operating Systems: Windows Server 2022, 2019, 2016, 2012R2, 2008, 2003; Windows Desktop: 11, 10, 8.1, 8, 7, Vista, XP; Mac OS X, Classic Macintosh, Linux, RHEL (Red Hat), CentOS, Ubuntu, Oracle, Fedora, Debian, Rocky, Alma Linux, Cisco IOS, Apple iOS, Android, and more . . . Web: Internet Information Server (IIS) 10, 8, 7, 6 Apache 2, WordPress, Elementor, WooCommerce Software: Adobe CC, Creative Suites CS6, CS5, CS4, Dreamweaver CC, Visual Studio, MS Expression Web 4, Photoshop, GIMP, Illustrator, Inkscape, Office 365 Networking: Active Directory, VirtualBox, Hyper-V, VMWare, PowerShell, VPN, DNS, cPanel, WHM Accounting: Peachtree, Sage 50, QuickBooks, Tax Preparation, GnuCash, Deprecation, Payroll, Inventory Terms: Minimum billing is one (1) hour.

  • WordPress
  • Website Migration
  • WooCommerce
  • Virus Removal
  • Linux System Administration
  • Apache HTTP Server
  • Windows Server
  • Microsoft IIS
  • Ubuntu
  • macOS
  • Web Development
  • PayPal Integration
  • Ecommerce
Igor K.

San Diego, California

$90/hr
4.9
541 jobs

Senior WordPress Developer. Reliable and responsive. Result-oriented work. On time. "Top Rated Plus" Upwork premium freelancer, member of an Upwork PRO group. 14+ years skill in full-stack web site development (prototype, graphic design, front-end, back-end, SEO). Back end experience: PHP (WordPress, Laravel), C# (ASP .NET MVC, Web API, Entity Framework, Orchard, Kooboo, Umbraco). Front end experience: HTML5 / CSS3, SASS, LESS, Bootstrap 5, Html5 animation, JS, jQuery, AJAX, Json, Rest API, Angular 1-2-4, React.js, Vue.js, Node.js, Three.js. Other experience: Windows/Unix Server administration, Git, Azure, AWS and cloud solutions. In terms of WordPress can provide: ✔️ custom theme design or theme/template modification; ✔️ responsive HTML (will pass Google mobile-friendly test, work on any device and OS); ✔️ retina display support; ✔️ HTML5 animation if needed; ✔️ WordPress/Woo back end; ✔️ WordPress multisite and membership, BuddyPress, bbPress; ✔️ custom plugin development; ✔️ 3rd-party services and payment systems API integration; ✔️ SEO, make AMP compliant, setup CDN (Cloudflare); ✔️ support; ✔️ warranty. Great experience with: ✔️ e-commerce; ✔️ payment systems integration (PP, Stripe, Authorize.net and similar); ✔️ Google Maps API (custom design, clusters, routing, radius, speed/time/distances calculation, etc.); ✔️ responsive CRM and dashboards, high-traffic web-projects; ✔️ experience with Microsoft Power BI. Keep the warranty, always available, fast response and turnaround. === TAGS === WordPress Developer ; WordPress expert ; Fullstack developer.

  • WordPress
  • WooCommerce
  • PHP
  • WordPress Plugin
  • WordPress Development
  • Elementor
  • WordPress Theme
  • WordPress Security
  • WordPress Multisite
  • WordPress Customization
  • Web Design
  • CSS
  • JavaScript
  • HTML
  • Vue.js
Ehteshamuddin M.

Phoenix, Arizona

$45/hr
4.5
79 jobs

I build and run Production Infrastructure on AWS, GCP, Azure and on-prem. Most of my work the last few years has been Kubernetes (EKS, GKE, AKS, and bare metal RKE2 with Rancher) and getting that infrastructure through compliance audits: HIPAA, SOC 2, PCI DSS, NIST 800-53. 10+ years in DevOps. Top Rated Plus, 100% Job Success. 𝙎𝙤𝙢𝙚 𝙧𝙚𝙘𝙚𝙣𝙩 𝙥𝙧𝙤𝙟𝙚𝙘𝙩𝙨 𝙩𝙤 𝙜𝙞𝙫𝙚 𝙮𝙤𝙪 𝙖𝙣 𝙞𝙙𝙚𝙖 𝙤𝙛 𝙬𝙝𝙖𝙩 𝙄 𝙖𝙘𝙩𝙪𝙖𝙡𝙡𝙮 𝙙𝙤: Built an on-prem RKE2 cluster from scratch for a company preparing for SOC 2 and HIPAA. Rancher for management, Cilium with WireGuard for encrypted pod traffic, GPU nodes for their ML workloads, Longhorn for storage, Velero for backups, ArgoCD for deployments. Also enforced SSO through Entra ID on every cluster and SSH access point because their auditors required it. Took a healthcare data platform through HIPAA hardening on AWS. ECS Fargate, Aurora PostgreSQL, private subnets, TLS everywhere, proper secrets handling. Phase one was making it work, phase two was making it pass an audit. Different skill sets, I do both. Modernized AWS infrastructure for a holding group running four brands. Moved everything to ECS Fargate and Aurora Multi-AZ, set up blue-green deployments, CloudFront in front. Midway through we found a security breach in their GitHub org and I handled the full remediation across every repo. Fixed a production Aurora MySQL performance problem that had their app timing out during peak hours. Root cause was tmp table spill to disk. Tuned it, added a reader, no downtime. I also do a lot of unglamorous work that keeps things running: CI/CD pipelines (GitHub Actions, GitLab CI, ArgoCD), Terraform for everything, monitoring with Prometheus and Grafana, cost cleanup, VPN and networking issues, database migrations. Industries I know well: Healthcare (HIPAA is second nature at this point), Fintech and Payments (PCI DSS), and B2B SaaS. 𝙒𝙝𝙖𝙩 𝙮𝙤𝙪 𝙜𝙚𝙩 𝙬𝙤𝙧𝙠𝙞𝙣𝙜 𝙬𝙞𝙩𝙝 𝙢𝙚: Infrastructure that is written down in code, documented, and reproducible. I answer messages fast and I will tell you upfront if something is a bad idea or if I am not the right person for it. Send me your project details and current setup. I will give you an honest read on scope and effort before you spend anything. Senior DevOps Engineer, DevOps Engineer, Site Reliability Engineer, Cloud Engineer, AWS, GCP, Azure, Kubernetes, Amazon EKS, Google GKE, Azure AKS, Docker, Terraform, Infrastructure as Code, CI/CD, GitHub Actions, GitLab CI, Jenkins, ArgoCD, GitOps, Helm, Rancher, RKE2, Linux, Cloud Infrastructure, Cloud Migration, AWS ECS, AWS Fargate, EC2, VPC, IAM, Networking, Load Balancing, Prometheus, Grafana, Monitoring, Observability, Automation, Production Infrastructure, High Availability, Disaster Recovery, Security Hardening, Cloud Security, DevSecOps, Kubernetes Security, HIPAA Compliance, SOC 2 Compliance, PCI DSS, NIST 800-53, Healthcare Infrastructure, FinTech, SaaS Infrastructure, Platform Engineering, Infrastructure Automation.

  • Kubernetes
  • Terraform
  • Docker
  • DevOps
  • Google Cloud Platform
  • Amazon Web Services
  • Cloud Computing
  • Cloud Architecture
  • CI/CD
  • Microsoft Azure
  • DigitalOcean
  • HIPAA
  • SOC 2
  • Ansible
  • Python
  • Data Warehousing & ETL Software
  • Django
  • Linux System Administration
  • AWS CloudFormation
  • Git
Mark R.

Missoula, Montana

$95/hr
4.6
381 jobs

I have 16+ years experience and I save you time & money with my meticulous work & advice for going forward. I've worked for individuals, businesses, startups and 501(c)(3) non-profits. Skills and experience include: • All aspects of WordPress, including PHP, jQuery, HTML and CSS, Genesis and custom themes, Bootstrap CSS and Javascript, and Advanced Custom Fields (ACF), SMTP and forms • DNS: configuration of all DNS records A, AAAA, CNAME, TXT, etc. at all DNS providers. SPF, DKIM and DMARC record configurations to ensure email deliverability for email providers such as Google Workspace and Office 365, and third-party email services such as Constant Contact, MailChimp, Hubspot, Klaviyo, Keap/Infusionsoft, etc. • Cloudflare: WAF firewalls and security, page rules and rate limiting, DNS configurations, SSL setup, country blocks, static hosting. • Technical SEO: Yoast and All in One SEO, XML sitemaps and the Google Search Console and Analytics. • Linux server administration (Ubuntu, AlmaLinux, Debian): Apache Nginx Litespeed, MySQL/MariaDB, PHP configurations, security and performance, Let's Encrypt SSLs. • Paid Memberships Pro setup and customizations. • Web hosts: WP Engine, Linode, Cloudways, Digital Ocean, Liquid Web, Kinsta, Pantheon (git), Flywheel, Pressidium and Amazon AWS. • Migrations from Joomla, ExpressionEngine, Drupal, Hubspot, TypePad, Movable Type, Blogger, Wild Apricot, and migrations from "plain" PHP & MySQL sites.

  • Linux
  • Ubuntu
  • Page Speed Optimization
  • MySQL
  • Firewall
  • Linux System Administration
  • WooCommerce
  • Theme Customization
  • Internet Security
  • WordPress
  • Cloudflare
  • PHP
  • Database Optimization
  • HTML5
Alvaro L.

American Fork, Utah

$35/hr
5.0
21 jobs

Highly accomplished and motivated Senior Software Engineer with over a decade of hands-on experience. Proven track record of delivering innovative and secure solutions and driving project success through the application of cutting-edge technologies. Adept at leading cross-functional teams and collaborating with stakeholders to achieve business objectives. Currently building and testing secured RestAPIs, Web Apps, and Mobile Apps using technologies such as GCP, AWS, Azure, Python, Pandas, Flask, ORM, Powershell, SQL, NoSQL, Bash, JavaScript, TypeScript, HTML, CSS, Jest, Solidity, React, React Native, Vue, Node, Redux, Expo, Google Firebase, Clerk, Ansible, AWS CDK, Azure DevOps, Azure Pipelines, Windows Server, Linux, Docker, Microservices, VPN, Blockchain, Networking, Virtualization, and more.

  • CentOS
  • JavaScript
  • MySQL
  • Python
  • React
  • Node.js
  • NoSQL Database
  • Linux System Administration
  • Firebase
  • React Native
  • Vue.js
  • Web Development
  • Amazon Web Services

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