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🏆 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.

🚀 Senior DevOps Engineer | 5+ Years | AWS, GCP, Terraform, Kubernetes, CI/CD, etc. I help startups and growing engineering teams replace slow, manual infrastructure with automated, scalable, production-grade systems (on AWS and GCP). 📌Certified: HashiCorp Terraform Associate | Red Hat Certified Engineer (RHCE) 🕐Availability: 40 hrs/week | India (UTC+5:30) | Open to US & EU time zones 📊WHAT I'VE DELIVERED ▸ 70% reduction in deployment time via Jenkins CI/CD pipeline automation ▸ 30% cloud cost reduction through Kubernetes infrastructure redesign ▸ Zero-downtime Java app migration from manual Tomcat to Docker and CI/CD ▸ Multilingual web infrastructure deployed for international client across multiple regions 🛠️ SERVICES ☁️ CLOUD INFRASTRUCTURE & IaC ▸ AWS: EC2, Auto Scaling, ELB/ALB, S3, RDS, VPC, IAM, CloudWatch ▸ GCP: Compute Engine, Cloud SQL, GKE, VPC networking ▸ Terraform: modular IaC, remote state, multi-environment (dev/staging/prod) ▸ Cloud security: IAM least-privilege, network isolation, security group hardening ▸ Cloud cost auditing, rightsizing, Reserved Instance & Savings Plan strategy 🔄CI/CD PIPELINE ENGINEERING ▸ Jenkins: Declarative & Groovy Scripted pipelines built from scratch ▸ GitLab CI/CD with SonarQube code quality gate integration ▸ GitHub Actions: reusable workflows, matrix builds, secrets management ▸ Full pipeline automation: build → test → scan → containerize → deploy ▸ Rollback-safe, zero-downtime release strategies 🐳CONTAINERIZATION & ORCHESTRATION ▸ Docker: containerizing legacy Java, Python, Node.js, PHP applications ▸ Kubernetes: EKS, GKE, self-managed clusters, Helm chart management ▸ Deployment strategies: rolling updates, blue/green, canary releases ▸ Horizontal Pod Autoscaling and resource quota configuration ▸ Docker Swarm for lightweight container orchestration ⚙️ CONFIGURATION MANAGEMENT & Automation ▸ Ansible playbooks & AWX Tower for large-scale infrastructure automation ▸ Nginx & Apache configuration and performance tuning for high-traffic workloads ▸ Vagrant-based development environment standardization across teams ▸ Bash/Shell scripting for system administration and task automation 📊 MONITORING & OBSERVABILITY ▸ Prometheus & Grafana for real-time infrastructure metrics and dashboards ▸ Loki for centralized log aggregation and alerting ▸ Nagios for legacy infrastructure monitoring environments 🔧 TECHNICAL STACK ☁️ Cloud: AWS, GCP 📐 IaC: Terraform, Vagrant 🔄 CI/CD: Jenkins, GitLab CI/CD, GitHub Actions 🐳 Containers: Docker, Kubernetes, Helm, Docker Swarm ⚙️ Config: Ansible, AWX Tower 🌐 Web: Nginx, Apache, Tomcat 📊 Monitoring: Prometheus, Grafana, Loki, Nagios 🗄️ Databases: MySQL, MongoDB, Oracle 📝 Scripting: Bash, Shell, Groovy 💼 RECENT PROJECTS 🤖 CI/CD Pipeline for AI Company Built end-to-end Jenkins pipeline replacing fully manual deployments Eliminated release-day errors and cut deployment time by 70%. ☸️ Kubernetes Infrastructure Overhaul Redesigned cluster resource allocation and autoscaling. Achieved 30% reduction in monthly cloud infrastructure costs. ♻️ Java App Modernization Migrated production Java app from manually managed Tomcat to a Docker-based automated pipeline with GitLab CI/CD. 🌐 Multilingual Web Platform Deployed Nginx-based multilingual infrastructure with CDN integration for an international client serving multiple regional audiences. ✅ WHY CLIENTS CHOOSE ME 🔒 Production-Ready: Every solution is tested, monitored, and documented before handover 📈 Long-Term Mindset: I prefer 6+ month engagements, long enough to do things properly 💰 Cost-Conscious: I treat your cloud bill like my own, and the numbers show it 🤝 Straight Communicator: You'll always know where things stand, no surprises, no jargon ⏰ Flexible Hours: 40 hrs/week, comfortable working across US and EU time zones 🎓 DEVOPS MENTORING & TRAINING I also take on a few mentoring clients at a time, developers, sysadmins, and career-changers who want real, hands-on coaching in Linux, Docker, Kubernetes, CI/CD, Terraform, and AWS. My learning sessions are created with individualised mentorship rather than a fixed curriculum. I’m looking forward to take on long-term contracts (6+ months) where there's room to do the work properly and make a real difference. If that sounds like what you need, send me a message and I’ll be happy to talk through your setup.

I am having 8+ years experience in Server Administrator & System Administrator And Network Administrator, wordpress. I have managed shared server,vps server, dedicated server, godaddy Hosting ,AWS Cloud Server,Digital Ocean Cloud Server,Google cloud, Alibaba cloud, DNS,Domain,SSL certificate,Plesk panel,Red-hat,CentOS,Ubuntu, G-suite setup AWS cost management and so on. I am AWS Certified Solutions Architect Associate Engineer And AWS Certified SysOps Administrator Engineer. In which i have managed following things:- EC2, LoadBalancer, RDS, Route53, S3 Bucket, Light-sail, SES, Work-mail setup, Snapshot, Volume, Auto Scaling, AMI, IAM Role, SSL Installation, Dedicated Server, Shared Server, Wordpress, Php, mysql, LAMP server etc. I have migrated Thousands of website shared hosting to cloud server aws. Skills:- DNS, Domain, Website Migration , SSl Installation of domain and subdomains, Installation of LAMP, Nodejs, NPM, JAVA, Ruby on Rails,Wordpress, php, Phpmyadmin, Mysql, Installation etc. 🕵 Malware Removal & Security Deep scan of WordPress files and database for malware, backdoors, and injections Manual removal of malicious code and infected files Clean hacked WordPress sites and restore functionality Remove phishing pages, Japanese keyword hacks, redirects, & spammy links 🔐 WordPress Hardening Install Maldet + ClamAV → scan for malware Setup & configure Wordfence Security Plugin Enable firewall (WAF) & brute-force protection Hide wp-admin & wp-login from bots & attackers Enable Cloudflare reCAPTCHA for login, registration & contact forms Disable XML-RPC & REST API (if not needed) 🌐 Cloudflare Security Setup Configure Cloudflare CDN + SSL Setup WAF (Web Application Firewall) rules Block bad bots & fake crawlers DDoS protection & rate-limiting rules Custom rules to stop brute-force attacks ⚙️ Server & Performance Security Secure file permissions & wp-config.php Regular backups & monitoring alerts Optimize server response & caching for faster load times 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, WHMCS, Plesk, cpanel, directAdmin etc. ✅ 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. ✅ Wordpress ◈ Infrastructure management in different Cloud Computing Platforms ✅ Amazon Web Services (AWS) ✅ DigitalOcean ✅ Google Cloud Platform (GCP) ✅ Vultr ✅Contabo ✅ionos ✅ Alibaba ✅ hawai cloud 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!

My Name is Didin I specialize in fixing and refactoring messy or poorly designed Laravel systems, especially APIs that are already running in production and cannot afford to break. I also capable to build frontend work using Vue, or React. I can deploy PHP/ Laravel project to self-hosted, AWS, DigitalOcean, VPS, or even shared hosting. I love using TDD integrated with Continues Integration such: Travis or bitbucket pipelines. And comfortable using git versioning control systems such: GitHub, GitLab, or bitbucket. Many of my clients come to me after working with previous developers where the system becomes difficult to maintain, unstable, or risky to update. My role is to take over those situations and turn them into stable, scalable, and maintainable systems without disrupting existing functionality. Over the years, I’ve handled real-world backend challenges such as POS systems, API integrations (including third-party platforms), order synchronization, and high-traffic applications. I don’t just write code, I make sure your system can safely evolve. # WHAT I CAN HELP YOU WITH: ✔ Fixing broken or unstable Laravel applications ✔ Refactoring messy or unstructured codebases ✔ Improving API design and maintainability ✔ Ensuring backward compatibility (no breaking changes) ✔ Debugging complex issues in legacy systems ✔ Optimizing performance and database queries ✔ API integrations (payment gateways, POS, third-party platforms) ✔ System architecture improvements for scalability # HOW I WORK I usually start with a quick system audit to understand the root cause of the problem and identify risks before making changes. From there, I provide a clear and safe plan to fix or refactor your system — ensuring improvements are made without breaking what already works. I focus on: ✔ Clean and maintainable code ✔ Safe deployment ✔ Long-term scalability # WHY CLIENTS WORK WITH ME ✔ 14,000+ hours on Upwork ✔ Proven experience handling real production systems ✔ Strong focus on stability and backward compatibility ✔ Clear communication and structured approach ✔ Able to work with existing/legacy code (not just new builds) # SKILLS ✔ PHP 5, PHP 7.x, PHP 8.x # Framework ✔ Laravel 5.x - 12.x ✔ Yii 1 & Yii 2 ✔ Codeigniter ✔ CraftCMS ✔ Inertia (React, or Vue are welcome) ✔ Livewire ✔ Lumen ✔ Sanctum ✔ OAuth (Passport) ✔ Cashier ✔ Nova ✔ Filament # API Integration ✔ RESTfull API ✔ Stripe (Mollie) ✔ Thuisbezorgd API ✔ UberEats API ✔ Google Map API ✔ Webhook ✔ FacebookAPI # Database ✔ Mysql /MariaDB ✔ PostgreSQL ✔ Sqlite ✔ MongoDB ✔ Redis ✔ Casandra # Testing ✔ PEST ✔ PHPUnit ✔ Selenium # AI Tools to boost productivity ✔ Claude AI ✔ Cursor ✔ Copilot ✔ ChatGPT # Cloud Server ✔ AWS (EC2) ✔ Plesk ✔ DigitalOcean ✔ BlueHost # Server ✔ Apache ✔ Nginx # JavaScript ✔ Vanilla JS ✔ jQuery ✔ Angular ✔ Vue: Vuex, Vuetify ✔ React: React-Redux, Redux-Thunk, Redux-Saga ✔ NextJS | NestJS | NuxtJs ✔ Webpack ✔ AlpineJS ✔ TypeScript # Other ✔ HTML5 ✔ CSS/ CSS3 ✔ LESS, SAAS, BEM ✔ Memcached ✔ Chrome Extension ✔ GIT or Subversion # API Docs ✔ Swagger (zircote) ✔ Blueprint API

💬 "He doesn't just write code — he understands the bigger picture and delivers results." — By Verified Upwork Client 𝗬𝗼𝘂𝗿 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝗶𝘀 𝘁𝗵𝗲 𝗳𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝗲𝘃𝗲𝗿𝘆𝘁𝗵𝗶𝗻𝗴 𝘆𝗼𝘂 𝗯𝘂𝗶𝗹𝗱. 𝗜 𝗺𝗮𝗸𝗲 𝘀𝘂𝗿𝗲 𝗶𝘁 𝗵𝗼𝗹𝗱𝘀. Whether you're a SaaS founder, a scaling business, or a startup still figuring out the right approach, I build backends that are clean, scalable, and built to last. 8+ years. Production-grade platforms. Real clients. If you want it done right the first time, let's talk. 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 ▸ Multi-tenant SaaS platforms built to scale from day one ▸ High-performance websites engineered for scale ▸ REST APIs & integrations — Stripe, PayStack, Square, Remita, and custom gateways ▸ AI-powered features — content generation, workflow automation, document systems ▸ Full backend architecture — database design, business logic, performance optimization ▸ Full-stack Laravel apps — Blade & React with Inertia.js ▸ VPS deployment — Nginx, Apache, SSL, AWS, DigitalOcean 𝗧𝗥𝗔𝗖𝗞 𝗥𝗘𝗖𝗢𝗥𝗗 One platform I built has been live since 2019 — 1M+ records, multiple modules, still scaling. That's not luck. That's architecture. 𝗣𝗘𝗥𝗙𝗘𝗖𝗧 𝗙𝗢𝗥 ▸ Existing Websites or Projects those need upgrading, refactoring, or modernizing ▸ SaaS founders who need scalable backend architecture ▸ Startups wanting production-grade foundation from day one ▸ Businesses with complex systems that need to perform at scale ▸ Agencies looking for a reliable Laravel development partner ▸ CTOs who need a developer that thinks, not just codes 𝗙𝗥𝗘𝗘 𝗖𝗢𝗗𝗘 𝗥𝗘𝗩𝗜𝗘𝗪 Not sure if your current Laravel codebase is healthy? Send me your project — I'll review it and give you honest feedback. No charge. No obligation. 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗪𝗜𝗧𝗛 𝗠𝗘 𝗠𝗘𝗔𝗡𝗦 ▸ Post-delivery support — available after handoff, not just during the build ▸ Clean code your team can maintain and scale ▸ Clear communication — no guessing, no surprises ▸ A developer who thinks about your business, not just the ticket ▸ Shipped on time. Built to last. Real systems. Real clients. 8+ years of getting it right. 📩 𝗦𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 — 𝗹𝗲𝘁'𝘀 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝘀𝗲𝗿𝗶𝗼𝘂𝘀.

I help startups, agencies, and businesses build secure, scalable, and high-performance web applications using modern technologies and AI-assisted development workflows. With strong experience in backend engineering, API development, cloud infrastructure, and frontend frameworks, I deliver clean, maintainable solutions that are fast, reliable, and production-ready. What I Can Help You With ✅ Custom Web Application Development ✅ REST API & GraphQL Development ✅ SaaS Platforms & Business Systems ✅ AI-Assisted Development & Automation ✅ Third-Party API Integrations ✅ Performance Optimization & Security Hardening ✅ Legacy System Upgrade & Modernization ✅ Cloud Deployment & DevOps Setup Backend & Web Technologies • Laravel, Django, Spring Boot, Yii2 • Express.js, NestJS • WordPress, Drupal, Magento • PHP, Python, Java, JavaScript, TypeScript • MySQL, PostgreSQL, MongoDB, Redis Frontend Development • React.js, Vue.js • Tailwind CSS, Bootstrap • Alpine.js, Livewire, HTMX Cloud & DevOps • AWS, GCP • Docker, Kubernetes • CI/CD Pipelines • Linux, Nginx, Apache API & Integrations • Stripe, PayPal • Twilio, Firebase • Slack, Zapier, Xero • REST APIs & GraphQL AI Development Workflow I actively use modern AI development tools to improve delivery speed, code quality, debugging, and architecture planning: • Cursor • Claude • ChatGPT • GitHub Copilot Why Clients Work With Me ✔ Clean, maintainable, scalable code ✔ Fast communication & reliable delivery ✔ Strong debugging and problem-solving skills ✔ Production-ready deployment experience ✔ Security-focused development approach ✔ Ability to work independently and take ownership Whether you need a custom platform, backend API, cloud deployment, or ongoing development support, I can help turn your ideas into reliable software solutions. Let’s build something great together.