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✅ ABOUT ME: I am a Professional Full Time Freelancer. I have 8+ years of experience working on Windows/Linux server administration, CICD Devops ,AWS, Azure, windows/Linux troubleshooting, HyperV, proxmox servers, DNS records mapping, IIS, Domains and DNS records management, active directory, web server, webhosting, databases administrations and Mail server implementations, administrations for the mail services MS Office365, Gsuite, Zimbara and postfix . ✅ WHY ME? • Full-time Professional – I work on Upwork as a full-time freelancer. I take every project seriously and I am highly professional. • Highly responsive – I’ll always get back to you in less than 02 hours. • 100% Client satisfaction – I provide revisions and modifications even after our contract ends. • I provide accurate solutions and just as important, I can guide you to future prospects and put your project on the right track. • Good communication skills – You will find me very friendly to talk to. ========================================= #Windows Servers - clients #Linux Server - clients #Web servers - IIS, Apache, XAMPP, Nginx and Tomcat #Database Servers - MSSQL, ORACLE, MYSQL, MongoDB #Webhosting tools- Plesk, cPanel and CWP #Cloud services providers - AWS, Azure, GCP, Digital Ocean, World stream, OVH Cloud, Hetzner and Hosting raja #Hosting providers - Hostinger, Bluehost, Namecheap, Godaddy, Bigrock and Hostgator #Active Directory - setup, users creation, Centralized Management, policy creation and enhanced Security #Troubleshooting - L1, L2 Tools used ============== Github, SVN IIS,Apache,Tomcat,Nginx , Apache Kafka and Wordpress SSH, RDP, VNC, Anydesk, Splashtop and screen connect Mobaxterm,Toad,SSMS and Workbench Plesk,WHM,Cpanel Active Directory, IAM Servicenow, Redmine, Microsoft Teams and Slack Previous Clients Feedback: 1- "Karthik was an exceptional Upworker to deal with. He was responsive, communicative, knowledgeable and proactive at solving my urgent technical issue (my businesses website was down for an unknown reason) and I wouldn't hesitate to recommend him to anyone else seeking an excellent technical support specialist. Thank you Karthik!" 2- "Karthik went above and beyond to progress with a very difficult issue in a very short period of time. He is kind, hard-working, and knowledgeable." 3- "I recently had the pleasure of working with "Karthik Raja" on installing PMB Software project, and I must say it was an outstanding experience from start to finish. I highly recommend "Karthik Raja" to anyone seeking top-notch freelancing services." 4- "he provides ideas to solve our problems he is a best gem have ever met. He focused only in customer satisfaction. no negative reviews." So why wait? Just invite me to your job on Upwork so we can discuss how to make your project a success. Let’s work together and get it done!! Thanks, Karthik

✅ 100% Job success ✅ WiX Toolset Installer ✅ On-Time Delivery ✅ Attention to Detail 💻 Software Developer with 8+ Years of Experience in .NET technologies 🛠️ Specialized in Software Deployment and installer development 🔧 Expert in WiX Toolset for building reliable and customizable installers 🔄 Skilled in Migrating InstallShield Projects to WiX Toolset, improving deployment efficiency ⚙️ Strong Proficiency in PowerShell Scripting for automation and configuration tasks 🐍 Hands-on Experience with Python for scripting, automation, and integration ✅ Committed to delivering efficient, maintainable, and on-time solutions

Top Rated Freelancer - Hourly rate is Negotiable. I am a Software Developer working in this field from last 8+ years. I have completed all projects till now with 5 Star and got good reviews from Clients. I am proficient in:- * Wordpress, WooCommerce, Buddypress, Buddyboss, LMS, Magento, Magento 2, Laravel, Codeigniter, Yii2, Stripe, REST API's, API Integration, GeoDirectory plugin, Gravity forms, Jotform, Zapier, Wordpress Custom Plugin Development, Hivepress directory theme development and customisation. * Website design and development using Elementor, WPBakery Page Builder, GeneratePress, Project Gutenberg and Divi Builder. * Woocommerce Subscription, Website Migration, All in one Migration * Custom Form Development, Gravity Form PDF, Fluent Forms, Survey Form, Jot Form * Gutenberg Table Block, ACF , Directory Websites development using Hivepress and other platform * React.js, Node.js HTML, CSS, UI development, Tailwind CSS, HTML5, CSS3 * Modifying existing software applications. * Creating new software applications from scratch. * Analysing and designing full software systems. * Using design documentation and flowcharts to illustrate what needs to happen. Looking forward for new work opportunities from potential clients all over the globe.

Senior Linux & Cloud Infrastructure Engineer | DevOps | 5+ Years | 100% Job Success I keep production systems up, fast, and secure — so you don't have to think about infrastructure. Currently managing 60+ Linux servers across AWS, Azure, and GCP for enterprise clients, including high-traffic WordPress fleets, educational LMS platforms, and SaaS applications. ━━ WHAT I DELIVER ━━ → WordPress at Scale: GridPane, OpenLiteSpeed, LiteSpeed Enterprise, Cloudflare WAF, CDN optimization — page loads cut from 4s to <1s → Cloud Infrastructure: AWS (EC2, S3, Route 53, IAM), Azure, GCP — architecture, migration, cost optimization → DevOps & CI/CD: Jenkins, GitHub Actions — automated build, test, and deployment pipelines → Infrastructure as Code: Ansible playbooks for provisioning, config management, and compliance automation (DISA STIG, OpenSCAP) → Containers: Docker, Portainer, Docker Compose — multi-container app deployment → Monitoring & Observability: Zabbix, Grafana, Prometheus, Loki — full-stack setup with alerting pipelines across 40+ production servers → Networking & VPN: Tailscale mesh VPN, Cloudflare Tunnels, Nginx/Caddy reverse proxy, pfSense, DNS management at scale → Security & Compliance: ModSecurity, OWASP hardening, DISA STIG, Wazuh SIEM, zero breaches in 5 years → Automation: Ansible, Bash, PowerShell, n8n workflows — eliminated 20+ manual hours/week → Microsoft 365 & Entra ID: full tenant management, MFA, Conditional Access, bulk provisioning → Mail Infrastructure: Postal Mail Server, SendGrid, DKIM/SPF/DMARC from scratch → Virtualization & Homelab: Proxmox, VMware ESXi, PXE boot + autoinstall for zero-touch Ubuntu provisioning, LVM storage, VM lifecycle management ━━ PROVEN RESULTS ━━ ✓ Built Jenkins CI/CD pipeline with Ansible for DISA STIG-compliant Ubuntu server fleet ✓ Deployed PXE autoinstall infrastructure for zero-touch provisioning of 10+ VMs ✓ Migrated 50+ WordPress sites with 100% data integrity and zero downtime ✓ Reduced server response time 40% through OLS tuning + CDN integration ✓ Set up full observability stack (Zabbix + Grafana + Loki) across 40+ production servers ✓ Implemented Tailscale mesh VPN across Proxmox homelab and remote VPS nodes ✓ Configured multi-layered security stack reducing spam/injection by 95% ✓ Automated M365 student provisioning for 3 educational institutions (500+ accounts) ✓ Reduced manual ops overhead 60% through n8n + Bash automation workflows ✓ Deployed automated backup systems saving clients 15+ hours/week ━━ TECHNOLOGY STACK ━━ Cloud: AWS (EC2, S3, IAM, Route 53, CloudWatch) | Azure | GCP On-Prem: Proxmox | VMware ESXi | Hyper-V | Bare Metal (OVH, Contabo, Hetzner) OS: Ubuntu 20/22/24 LTS | Rocky Linux | CentOS | RHEL | Debian Web: Apache | Nginx | LiteSpeed | OpenLiteSpeed Panels: GridPane | cPanel/WHM | Plesk | CyberPanel | aaPanel DB: MySQL | MariaDB | PostgreSQL DevOps: Ansible | Jenkins | GitHub Actions | Bash | PowerShell | n8n Containers: Docker | Portainer | Docker Compose Monitoring: Zabbix | Grafana | Prometheus | Loki | Uptime Kuma Security: Wazuh SIEM | OpenSCAP | ModSecurity | Cloudflare WAF | CSF | Sophos | Fortinet DNS/Mail: Cloudflare | Route 53 | Postal Mail Server | DKIM/SPF/DMARC RMM: Atera | ConnectWise | Datto | N-able I provide detailed documentation for every implementation and respond within 1 minute during business hours Send me your requirements — I'll respond with a tailored plan within 24 hours.

I'm a Senior DevOps & Cloud Infrastructure Engineer with 6+ years of hands-on experience building, securing, and automating cloud infrastructure on AWS, GCP, and Azure. I specialize in: ✅ AWS infrastructure (ECS Fargate, EKS, RDS, S3, Lambda, Bedrock, Cognito, API Gateway, EventBridge, SQS, CloudTrail, CloudWatch, IAM, Secrets Manager, CodeDeploy, Control Tower) ✅ DevSecOps & Security (AWS WAF, Network Firewall, VPC architecture, SIEM/Wazuh, CJIS compliance, Site-to-Site VPN) ✅ Kubernetes & Containers (EKS, ECS, Helm, Docker, Argonaut) ✅ Infrastructure as Code (Terraform, AWS CDK) ✅ CI/CD Pipelines (GitHub Actions, CodePipeline, Bitbucket Pipelines) ✅ Monitoring & Observability (Prometheus, Grafana, Alertmanager, CloudWatch) ✅ Self-hosted PaaS (Coolify, Dokploy, Caprover) ✅ Shopify App Deployment (OAuth, CSP headers, webhooks, reverse proxy) ✅ GenAI Infrastructure (AWS Bedrock, RAG pipelines, Terraform modules for Bedrock Agents) Recent highlights: 🔹 Redesigned AWS VPC architecture with centralized egress/ingress via Network Firewall — resolved critical production security audit findings 🔹 Built production-ready Terraform module for AWS Bedrock GenAI infrastructure (RAG stack) used across Dev/Test/Prod environments 🔹 Designed HA Kubernetes clusters on Scaleway with Cloudflare failover, WireGuard VPN DR, and automated Helm/Terraform CI/CD 🔹 Deployed complete monitoring stack (Prometheus + Grafana + Alertmanager) with smart alerting for production workloads I work with startups and enterprises across SaaS, healthcare, fintech, and e-commerce. Whether it's a greenfield cloud setup, a security hardening project, or a CI/CD pipeline overhaul — I deliver clean, documented, production-ready work. Top Rated Plus on Upwork | 96% JSS | $21K+ earned

SSO developer with 8+ years of experience in to identity and access management.Possess good knowledge on integrating different apps using SAML/OIDC/OAUTH. Possess experience in using different libraries for saml/oidc that includes below programming langauge: ★ NodeJs ★ ReactJS ★NestJS ★ Angular ★ PHP/larvel ★ Python ★ .NET Possess experience in using different identity providers such as : ★ KeyCloak ★ AzureAD ★ PINGFed/PingOne ★ Auth0 ★ OKTA ★ ISAM/ISIM ★ AWS ★ SailPoint