Senior Cloud & Infrastructure Architect with 15+ years in IT and 8+ years designing and operating production environments across Azure, AWS, GCP, and on-premises. I specialize in transforming fragmented infrastructure into secure, automated, and observable platforms that developers and businesses can rely on. I combine deep hands-on experience (Linux/Windows, networking, PBXs, virtualization) with architectural and leadership skills: assessing existing environments, defining target architectures and roadmaps, and then implementing them using Infrastructure as Code and CI/CD. Key domains and strengths Cloud architecture & migration (Azure, AWS, GCP): landing zones, hub-and-spoke VNets/VPCs, private endpoints, WAF, Application Gateway / ALB / NLB, API Management, Front Door, S3/Blob/File services, backup & DR. Containers & orchestration: Kubernetes (AKS, EKS, K8s on-prem), Docker, ECS/Fargate, Helm/Helmfile, service networking, ingress/TLS, and secure app deployments. DevOps, SRE & automation: Terraform, Bicep, Ansible, Azure DevOps, GitHub Actions, Jenkins, automated provisioning, configuration management, blue/green & canary releases, environment promotion (Dev/QA/Prod), cost optimization and capacity planning. Systems administration: Linux (Red Hat, CentOS, Debian, Ubuntu, SUSE, Fedora) – hardening, services, clustering. Windows Server – AD, DNS, DHCP, PKI, Group Policy, LDAP, remote access, file services. Networking & security: routing, VPNs (site-to-site and remote access), SD-WAN, Cisco (routers, switches, ASAs), firewalls, NSGs/NACLs, SSL/TLS, identity and SSO (AD, Azure AD, GSuite, SAML/OIDC), vulnerability management and monitoring. Virtualization & private cloud: VMware ESXi, Proxmox, XCP-ng, CloudStack, HA clusters, Ceph/RBD, storage design, templates and golden images. Collaboration & tooling: Atlassian (Jira, Confluence, Bitbucket), Git-based workflows, documentation and knowledge transfer for operations teams. Voice, PBX & real-time communication Design, deployment and troubleshooting of Asterisk-based systems: FreePBX, Elastix, FusionPBX, Vicidial, goAutoDial, Kamailio. Call center and contact-center solutions, SIP trunks, IVRs, CRM integrations, and high-availability VoIP clusters. What I typically help clients with Auditing and redesigning existing cloud/on-prem environments for reliability, security, and cost. Implementing end-to-end platforms: from network and identity, to Kubernetes/ECS, to CI/CD pipelines. Building repeatable infrastructure using Terraform/Bicep/Ansible and integrating it into DevOps workflows. Troubleshooting complex production issues (performance, connectivity, security, scaling) and delivering clear RCA and remediation plans. Designing and deploying robust PBX/contact-center and unified communications solutions. I work comfortably with minimal supervision, but I also collaborate closely with developers, security, and operations teams to align architecture with business goals. If you need a hands-on architect who can both design the solution and implement it in production, let’s talk.

Need a smooth email migration or a powerful automation setup? With 14+ years of experience, I help businesses move to Office 365, Google Workspace and build reliable workflows using n8n and Power Automate - with zero downtime and zero stress. Why clients work with me: • Zero-disruption, end-to-end email migrations • Secure and compliant configurations that pass audits • Seamless cloud + on-prem (hybrid) integrations • Clear communication and proactive problem-solving If you need an expert who takes ownership and delivers predictable results, let’s discuss your migration or automation goals.

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.

🏆 Top Rated Plus | 100% Job Success 🏆 Senior Infrastructure Engineer 🏆 Linux • Networking • Monitoring • Automation • Security Operations • Windows • DevOps I help businesses design, troubleshoot, monitor, secure, and automate production infrastructure environments. With 15+ years of hands-on experience across Linux systems, cloud infrastructure, enterprise networking, monitoring platforms, observability workflows, infrastructure automation, and security operations, I focus on solving complex operational and infrastructure challenges reliably and professionally. ━━━━━━━━━━━━━━━━━━ 💻 Infrastructure & Linux Engineering ━━━━━━━━━━━━━━━━━━ ✅ Linux administration (Ubuntu, Debian, AlmaLinux, CentOS, RedHat) ✅ Infrastructure troubleshooting & operational support ✅ Server hardening & patch management ✅ Performance tuning & infrastructure optimization ✅ Docker & containerized environments ✅ VPN deployments (WireGuard, OpenVPN, IPsec) ✅ DNS troubleshooting & infrastructure migrations ✅ NGINX, Apache, LiteSpeed optimization ✅ MySQL, MariaDB, PostgreSQL administration ✅ Infrastructure monitoring & operational visibility ━━━━━━━━━━━━━━━━━━ 📊 Monitoring & Observability ━━━━━━━━━━━━━━━━━━ ✅ Zabbix deployment, templates, alerting & monitoring ✅ Graylog centralized logging & syslog ingestion ✅ Infrastructure observability workflows ✅ SNMP monitoring & telemetry collection ✅ Infrastructure dashboards & alerting strategies ✅ Log parsing, visibility & operational troubleshooting ✅ Monitoring Linux servers, switches, VPS, cloud environments & infrastructure services ━━━━━━━━━━━━━━━━━━ 🌐 Network Engineering ━━━━━━━━━━━━━━━━━━ ✅ Arista & Cisco Nexus operational support ✅ VLANs, VRFs, routing & switching ✅ WireGuard & site-to-site VPN deployments ✅ A10 Networks & CGNAT operational support ✅ Network troubleshooting & operational visibility ✅ Firewall policy troubleshooting ✅ Infrastructure telemetry & monitoring integrations ✅ Infrastructure cabling & operational deployments ━━━━━━━━━━━━━━━━━━ ☁️ Cloud & Infrastructure Operations ━━━━━━━━━━━━━━━━━━ ✅ AWS infrastructure support ✅ Cloudflare integrations & DNS management ✅ EC2, VPC, RDS, Redis & infrastructure deployments ✅ Amazon SES, SPF, DKIM & DMARC configuration ✅ Email deliverability troubleshooting ✅ Cloud migrations & infrastructure onboarding ✅ Infrastructure automation using Bash & Python ━━━━━━━━━━━━━━━━━━ 🔐 Security Operations ━━━━━━━━━━━━━━━━━━ ✅ Vulnerability remediation support ✅ Security hardening & MFA enforcement ✅ Incident response & operational troubleshooting ✅ Malware cleanup & compromised server handling ✅ Infrastructure security baselines ✅ Operational security reviews ✅ ISO27001 / SOC2 / HIPAA operational support ━━━━━━━━━━━━━━━━━━ 🛠️ Platforms & Technologies ━━━━━━━━━━━━━━━━━━ 💻 Linux: Ubuntu • Debian • AlmaLinux • CentOS • RedHat 🌐 Networking: Arista • Cisco Nexus • WireGuard • VPN • VLAN • VRF • A10 Networks 📊 Monitoring: Zabbix • Graylog • SNMP • Syslog • Telemetry ☁️ Cloud: AWS • Cloudflare • DigitalOcean • Linode • Vultr ⚙️ Automation: Bash • Python • REST APIs • Infrastructure Automation ━━━━━━━━━━━━━━━━━━ 🚀 What You Can Expect ━━━━━━━━━━━━━━━━━━ ✅ Clear communication ✅ Production-safe execution ✅ Strong troubleshooting methodology ✅ Clean documentation ✅ Long-term operational stability ✅ Infrastructure-focused solutions ✅ Reliable and professional support I am comfortable working independently, collaborating with internal teams, troubleshooting production incidents, and supporting long-term infrastructure operations across enterprise and MSP environments.

Hi, I'm Hasitha, a software engineer having extensive experience of over 7 years in software and web development, server administration and also a strong communicator with the ability to convey ideas clearly with an emphasis on client satisfaction. My specialized areas are as follows. ◈ Server-related tasks ✅ Troubleshooting issues related to web servers (Apache, NGINX). ✅ Installation/renewal of SSL certificates. ✅ Troubleshooting Linux server-related issues. ✅ Configuration of LAMP/LEMP stack. ✅ Fixing 401, 403, 404, 502, and 503 HTTP errors. ✅ Configuration of Webmin, Virtualmin, WHM, and cPanel. ✅ Troubleshoot SSH access-related issues. ◈ WordPress websites ✅ Migration of WordPress websites from one hosting to another ✅ Troubleshooting WordPress website-related issues (Critical errors, outgoing emails not working, etc.). ✅ Set up SMTP email configurations. ✅ WordPress core, themes, and plugin updates. ✅ Payment gateway integrations. ◈ Email related configurations ✅ Google Workspace email set up. ✅ SMTP configurations for different web applications. ✅ Configuration of third-party SMTP providers such as AWS SES, SendGrid. ◈ DNS related tasks ✅ Configuring DNS (adding/modifying DNS records, updating nameservers) in different domain providers (GoDaddy, Namecheap, Google Domains, Bluehost, DreamHost, etc). ◈ Websites/Web application development ✅ Fix errors related to websites/web applications built using HTML, CSS, JavaScript, PHP, and MySQL. ✅ Build web applications using the PHP Laravel framework. ✅ Development of backend APIs using Java Spring Boot framework. ✅ Third party API integrations. ◈ Infrastructure management in different Cloud Computing Platforms ✅ Amazon Web Services (AWS) ✅ DigitalOcean ✅ Google Cloud Platform (GCP) ✅ Microsoft Azure If you're looking for a dedicated and experienced developer/server admin who can deliver high-quality code and drive successful project outcomes, I'd love to chat with you. Let's work together to turn your vision into reality!

I am an energetic and self-confident DevOps Engineer / Linux System Administrator/ Cloud Engineer with 15+ years of hands-on professional experience in cloud platforms, system administration, and web hosting solutions. I enjoy the DevOps process, love solving complex infrastructure problems, and am always ready to take on new challenges while achieving both client and personal goals. What can I do? Server & OS Management: * Installation and configuration of servers: MySQL, Apache, LAMP, WordPress, Samba, NFS Ubuntu OS customization as per organizational requirements * Linux system administration (Ubuntu, CentOS, Red Hat, Fedora) * Backup, restore, and disaster recovery in case of server crashes * Disk space analysis and resolution Web Hosting & Performance Optimization: * Web hosting and optimization for WordPress, WordPress Multisite, Apache, Nginx, Java-based sites * WHM & cPanel administration and performance tuning * Nginx, Apache, LiteSpeed configuration and hosting Website and server speed optimization: * SSL installation and setup (Let’s Encrypt & paid SSL certificates) * Stop spamming and secure compromised servers * Website, email, DNS, and domain migration Cloud & DevOps Solutions: * Cloud platforms: AWS, Google Cloud, Azure, DigitalOcean * EC2 instance setup and management * AWS EBS configuration * AWS networking, security, and firewall design * Load Balancers and Auto Scaling * Storage services: S3, AWS Backup * Database services: Amazon RDS * Designing secure, scalable AWS environments and recommending best-fit solutions * Migrating on-prem or existing servers to AWS Virtualization & Windows Administration: * VMware vSphere administration (vCenter / ESXi) * Windows system administration (Active Directory, DNS, DHCP) * KVM Deployment and management * HyperV Deployment and management Hosting Providers & Tools *Management of hosting platforms like GoDaddy, HostGator, SiteGround, Cloudflare, and more Research & Innovation: * Continuous R&D, testing new tools, and improving infrastructure reliability Certifications: * Microsoft Certified Technology Specialist (MCTS) * Microsoft Certified Professional (MCP) * Red Hat Certified System Administrator (RHCSA) * Red Hat Certified Engineer (RHCE) * Oracle Cloud Infrastructure 2025 Multicloud Architect Professional * Oracle Cloud Infrastructure 2025 DevOps Professional * Oracle Cloud Infrastructure 2025 Architect Associate * Oracle Cloud Infrastructure 2025 Foundations Associate

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

Comprehensive knowledge and experience in a wide spectrum of tech - Back to front. From Linux server administration and configuration to advanced front end development. Preference for AWS, PHP, MySQL and Mongo. Familiar with a large number of modern frameworks and libraries. A passion for security, simplicity, and minimal UX.

You are searching on Upwork because you're seeking someone who is reliable and affordable. But when it comes to server technology knowledge and needs, you also need someone you can trust. I understand your this and can deliver in every facet. I am readily available online, easily reachable, fast to respond, and some of my most trusted clients even text me personally during immediate needs. My objective is to bring excellent client satisfaction, providing quality and professional work. I am an IT Engineer with Masters degree in IT System and Network Security. I'm an experienced Linux Server Administrator and Windows Server Administrator with 5+ years of experience. Skills I'm most confident with: * Amazon Web Services (AWS) Expert * Google Cloud Platform (GCP) Expert * CI/CD Expert * Windows family Operating Systems (administration, configuration, audit, optimization) * Rights Management System for Active Directory (installing, configuring) * Linux - CentOS, RedHat, Debian, Ubuntu, Kali Linux (administration, configuration, audit, optimization) * AWS server management (EC2, RDS, S3 Bucket, Cloud watch, Route53, Lambda, Dynamodb, API Gateway, IAM Policy, Role Management, IAM Authentication, Security Groups, VPC, etc.) * Setting up new servers, maintaining and monitoring them. * Migrating environments between hosting companies and OS'es. * Setting up MySQL and PostgreSQL replication. * Setting up backups and documenting restore processes. * Setting up Mail Server (Postfix/Sendmail, Dovecot, Webmail) * Web hosting Administration (cPanel, Plesk, DirectAdmin) * Apache (installation, configuration, optimization) * Network Administration (CCNA) * IIS installation and configuration * MySQL (installation, configuration, optimization) * Domain Management * DNS Management * Install and configure Mail System for the Email Marketing purposes * VPS management (Installing, administration, Configuring, Optimization) * Ethical Hacking * Vulnerability Assessment (Automated, Manual) * Penetration Testing * Malware Analysis * Reverse Engineering * Firewall installation and configuration * IDS and IPS deployment and monitoring * Web Security assessment (OWASP Top - 10) * Data Encryption & Decryption * ARP, RARP, TCP/IP, FTP, HTTP, HTTPS, ICMP * SSL (Installation, Configuring, Administration) * Web-programming knowledge: PHP, HTML, CSS, JavaScript, Ajax, JQuery * Python Scripting * System Backup and Restore automation * System Services Monitoring automation * Virtualization (VMWare, VirtualBox, HyperVM, OpenVZ, Xen) * Shell Scripting * VPN systems, OpenVPN (installation and configuration) My priority is in building long-term prosperous relationships with my clients. I can figure out problems in a fast and efficient way. Languages that I speak: English, Hindi

My name is Vladislav, currently reside in Ukraine, 33 years old, started to program when I was 14. I have a broad and deep experience and knowledge in computer science. I offer my services in website building related jobs. I can solve complex tasks that usually needs two or more specialists. I like to work in agile development way as much as possible. Being free to choose work to do and technology stack to use, the first thing for me is an opportunity to deliver fine quality services. I'd like both you and me to use my skills and our time in the most efficient way.