Senior Infrastructure Engineer with 20+ years of experience specializing in troubleshooting complex enterprise environments across Azure, SCCM, SQL Server, and hybrid infrastructure. Focused on resolving high-impact issues related to system performance, patching failures, migrations, and infrastructure instability, especially in situations where standard approaches are not sufficient. Extensive experience across VMware, Hyper-V, Windows Server, Active Directory, and enterprise storage solutions, with a strong understanding of networking and cloud integration. Proven ability to quickly identify root cause, stabilize environments, and deliver reliable long-term solutions in production-critical systems.

I have been working on security engineer field for almost 7 years. Have knowledge on configure security rule, NAT rule, PBF rule, IPSec, and GlobalProtect (Palo Alto VPN). Able to identify network / firewall related issues as I am able to see a big picture of a traffic flow. I have experience on several firewall technology ( Palo Alto, Checkpoint, Forcepoint, and Juniper ). Below is the list of certificate I have: 1. PCNSA 2. PCNSE 3. PCNSC 4. PSE Pro SASE 5. PSE Pro Cortex

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 :)

🎯 100% Refund If I set the wrong expectations and can’t deliver. No questions asked. I’m a 𝗦𝗲𝗻𝗶𝗼𝗿 𝗗𝗲𝘃𝗢𝗽𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 𝘄𝗶𝘁𝗵 𝟭𝟱+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 designing and scaling secure, high-availability cloud infrastructures. I lead an entire DevOps division of 𝟮𝟬+ 𝘁𝗮𝗹𝗲𝗻𝘁𝗲𝗱 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀, delivering enterprise-grade solutions across AWS, Azure, and GCP for startups, SaaS platforms, FinTech, eCommerce, Healthcare, and large enterprises. ✔️ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝘁𝗼 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲: ⭐ 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | ⭐𝟱-𝗦𝘁𝗮𝗿 𝗙𝗲𝗲𝗱𝗯𝗮𝗰𝗸 | ⭐ 𝗧𝗼𝗽 𝟯% 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 → Full Confidentiality: NDA signed for every project → Reliable & On-Time Delivery: Clear communication, predictable execution → 24/7 DevOps Support: Immediate response for critical production issues → Cost Optimization Focus: Proven track record of reducing cloud costs by up to 40% I have 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹𝗹𝘆 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗳𝗼𝗿 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗨𝗦𝗔, 𝗨𝗞, 𝗘𝘂𝗿𝗼𝗽𝗲, 𝘁𝗵𝗲 𝗠𝗶𝗱𝗱𝗹𝗲 𝗘𝗮𝘀𝘁, 𝗮𝗻𝗱 𝗔𝘂𝘀𝘁𝗿𝗮𝗹𝗶𝗮, helping businesses achieve 99.99% uptime, secure deployments, and fully automated infrastructure. 🏅 𝑪𝒆𝒓𝒕𝒊𝒇𝒊𝒄𝒂𝒕𝒊𝒐𝒏𝒔: ✅ Microsoft Certified: Azure Solutions Architect Expert ✅ AWS Certified DevOps Engineer – Professional 🛠️ Key Skills and Technologies: - 𝑪𝒍𝒐𝒖𝒅 𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎𝒔: AWS, Azure, Google Cloud Platform (GCP) - 𝑪𝑰/𝑪𝑫 𝑷𝒊𝒑𝒆𝒍𝒊𝒏𝒆𝒔: GitHub Actions, GitLab CI/CD, Jenkins, Azure DevOps, CircleCI - 𝑰𝒏𝒇𝒓𝒂𝒔𝒕𝒓𝒖𝒄𝒕𝒖𝒓𝒆 𝒂𝒔 𝑪𝒐𝒅𝒆 (𝑰𝒂𝑪): Terraform, CloudFormation, Pulumi, Ansible - 𝑪𝒐𝒏𝒕𝒂𝒊𝒏𝒆𝒓𝒔 & 𝑶𝒓𝒄𝒉𝒆𝒔𝒕𝒓𝒂𝒕𝒊𝒐𝒏: Docker, Kubernetes (EKS, AKS, GKE), Helm, Istio - 𝑫𝒆𝒗𝑺𝒆𝒄𝑶𝒑𝒔: Vault, AWS Secrets Manager, automated security policies, compliance - 𝑴𝒐𝒏𝒊𝒕𝒐𝒓𝒊𝒏𝒈 & 𝑳𝒐𝒈𝒈𝒊𝒏𝒈: Prometheus, Grafana, ELK/EFK Stack, Datadog, New Relic - 𝑹𝒆𝒍𝒆𝒂𝒔𝒆 𝑺𝒕𝒓𝒂𝒕𝒆𝒈𝒊𝒆𝒔: Canary deployments, Blue/Green, Zero-downtime rollouts - 𝑷𝒆𝒓𝒇𝒐𝒓𝒎𝒂𝒏𝒄𝒆 𝑻𝒖𝒏𝒊𝒏𝒈: Cost optimization, autoscaling, fault tolerance - 𝑪𝒍𝒐𝒖𝒅 𝑺𝒕𝒓𝒂𝒕𝒆𝒈𝒚 & 𝑨𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕𝒖𝒓𝒆: Multi-cloud design, hybrid cloud, migration planning - 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕: Node.js, PHP, REST APIs, Microservices Architecture - 𝑭𝒓𝒂𝒎𝒆𝒘𝒐𝒓𝒌𝒔 & 𝑾𝒆𝒃 𝑺𝒕𝒂𝒄𝒌𝒔: Node.js: Express.js, NestJS, | PHP: Laravel, CodeIgniter 🧠 𝑾𝒉𝒂𝒕 𝑺𝒆𝒕𝒔 𝑴𝒆 𝑨𝒑𝒂𝒓𝒕: - 15+ years of real-world experience in software engineering & cloud automation - Access to a team of 30+ certified DevOps engineers for rapid scaling - Hands-on expertise with 𝒆𝒗𝒆𝒓𝒚 𝒎𝒂𝒋𝒐𝒓 𝒕𝒐𝒐𝒍 𝒊𝒏 𝒕𝒉𝒆 𝑫𝒆𝒗𝑶𝒑𝒔 𝒆𝒄𝒐𝒔𝒚𝒔𝒕𝒆𝒎 - Fast onboarding, transparent communication, and round-the-clock availability - Proven success with startups, enterprises, and mission-critical cloud systems 🌍𝗟𝗘𝗧’𝗦 𝗦𝗖𝗔𝗟𝗘 𝗔𝗡𝗗 𝗦𝗘𝗖𝗨𝗥𝗘 𝗬𝗢𝗨𝗥 𝗖𝗟𝗢𝗨𝗗 𝗜𝗡𝗙𝗥𝗔𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘 Message me on Upwork today for a 𝗳𝗿𝗲𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 and expert guidance on AWS, Azure, GCP, Kubernetes, CI/CD, and cloud cost optimization. I typically respond within 1 – 2 hours and am ready to help you build a secure, scalable, and production-ready DevOps environment.

"Your Infrastructure is the backbone of your business. Don't leave it to chance—build it for scale, security, and performance." As a Senior Solutions Architect & Full-Stack Developer with over 12 years of battle-tested experience, I specialize in building, securing, and automating high-performance digital ecosystems. I bridge the gap between Software Engineering and Cloud Infrastructure, ensuring that your applications don't just run—they thrive. Whether you are migrating to the cloud, automating a DevOps pipeline, or requiring custom software integrated with enterprise systems like ERPNext, I provide the strategic oversight and technical execution needed to deliver ROI. 🚀 Core Expertise & How I Add Value: Cloud & Infrastructure Architecture: Designing resilient, auto-scaling environments on AWS, Azure, and Hybrid Cloud. Expert in high-availability clusters using VMware (vSphere/ESXi) and Proxmox VE. Full-Stack Development: Custom software and web development using modern frameworks. I specialize in building secure, scalable applications that are optimized for the underlying server environment. DevOps & Automation: Implementing CI/CD pipelines, Infrastructure as Code (IaC), and automated monitoring to reduce human error and operational costs. Cybersecurity & Hardening: Enterprise-grade security including WAF (Cloudflare) optimization, malware eradication, and advanced DNS security (Infoblox). I build "Zero Trust" environments. Enterprise Solutions (ERPNext / Frappe): Expert-level deployment, custom Python/JS scripting, and seamless integration with eCommerce and third-party APIs. High-Volume Email Infrastructure: Specialized in self-hosted email delivery solutions (MTA) designed for high deliverability and security. 🛠 Technical Arsenal: Virtualization: VMware vSphere, Proxmox, KVM. Development: Python, PHP, JavaScript, SQL, Custom Scripting. Web & CMS: WordPress & WooCommerce (Expert Tuning), ERPNext/Frappe. Cloud & Networking: AWS, Azure, DigitalOcean, Cisco, Aruba, Cloudflare (WAF/Workers). Security: Malware Cleanup, Server Hardening, VPNs, SSL/TLS, Disaster Recovery. Monitoring: Zabbix, Grafana, Prometheus. 💎 Why Clients Choose Me: The 360° Perspective: I understand the code and the container. This hybrid expertise allows me to troubleshoot issues that others miss. Enterprise Experience: 12+ years managing complex environments for hosting providers and large-scale businesses. Security-First Mindset: I don't just build for functionality; I build for defense. Business-Centric Communication: I translate complex technical jargon into clear business decisions. Stop managing technical debt and start scaling. Let’s connect to discuss your project requirements. "In the age of AI, infrastructure is no longer just about uptime—it's about Intelligence and Speed." As a Senior Solutions Architect & AI Developer with 12+ years of experience, I don’t just build systems; I build Intelligent Ecosystems. I bridge the gap between heavy-duty Cloud Infrastructure and cutting-edge Artificial Intelligence, enabling businesses to automate complex workflows and gain a massive competitive edge. I specialize in the "Modern Tech Trifecta": Robust Cloud Architecture, Scalable Full-Stack Development, and Custom AI Integration. Whether you need to deploy a private LLM, build a RAG-based AI agent, or secure a global enterprise network, I deliver production-ready solutions that scale. 🚀 The High-Value Pillars I Deliver: 1. AI Engineering & Intelligent Automation (New & Powerful) LLM Integration: Developing custom applications powered by OpenAI, Anthropic, or Open-Source models (Llama 3, Mistral). RAG Systems: Building "Chat with your Data" solutions using Vector Databases (Pinecone, Weaviate) for intelligent document retrieval. AI Agents: Designing autonomous agents for task automation using frameworks like LangChain or CrewAI. AIOps: Implementing AI to monitor, predict, and auto-heal cloud infrastructure. 2. Enterprise Cloud & DevOps (The Foundation) Architecture: Designing high-availability environments on AWS & Azure. Virtualization: Expert-level optimization of VMware (vSphere) and Proxmox for maximum hardware utilization. CI/CD: Automating the bridge between code and deployment for seamless, zero-downtime updates. 3. Full-Stack Web Engineering Custom Development: Architecting scalable backends and intuitive frontends that integrate seamlessly with AI APIs. ERP Systems: Deep customization of ERPNext & Frappe, including AI-driven insights and automated reporting. 4. Cybersecurity & Defense Hardening: Protecting AI models and sensitive data from leaks and attacks. Network Security: Advanced Cloudflare configurations (WAF, Workers, Zero Trust). 🛠 Technical Arsenal (Advanced) AI & Data: OpenAI API, LangChain, Vector DBs, Python (FastAPI/Flask), HuggingFace. Infrastructure: AWS (EC2, S3, Lambda), Azure, VMware, Proxmox, Docker, Kubernetes. 📩 Click "Invite" or "Hire" to start a conversation.

Overview: As a seasoned System Engineer with 7+ years of experience, I specialize in providing robust infrastructure solutions with expertise in Linux administration, DNS management, and Email Delivery. I am passionate about optimizing system performance, ensuring seamless operations, and implementing industry best practices. With a strong track record of delivering successful projects, I am dedicated to providing efficient and reliable solutions tailored to my clients' unique needs. Key Skills: ✅Linux System Administration: Ubuntu, CentOS, Debian | Server Setup, Configuration, and Optimization | Security Hardening | Performance Tuning | Shell Scripting ✅DNS Management: Zone Configuration | Record Management (A, CNAME, MX, etc.) | DNSSEC Implementation | BIND, PowerDNS, NSD ✅Email Delivery: Mail Server Setup (Postfix, Exim, Sendmail) | SMTP Configuration | SPF, DKIM, DMARC | Blacklist/Whitelist Management | Deliverability Optimization Services I Offer: System Administration: - Linux server setup, configuration, and maintenance. - System and network security hardening to safeguard against potential threats. - Performance optimization to enhance overall system efficiency. DNS Management: - DNS infrastructure setup, including domain registration, zone configuration, and record management. - Implementation of DNSSEC for enhanced security and validation. - Troubleshooting DNS-related issues and resolving them promptly. Email Delivery Solutions: - Mail server setup and configuration to ensure reliable email delivery. - Implementation of email protocols and best practices (SPF, DKIM, DMARC) to maximize deliverability and minimize spam. - Blacklist and whitelist management to maintain a clean reputation and avoid email delivery issues. Why Choose Me? - Extensive Experience: I have successfully completed 100+ projects, gaining in-depth knowledge and hands-on expertise. - Client Satisfaction: I maintain a stellar track record of positive feedback from satisfied clients who appreciate my professionalism, prompt communication, and ability to meet deadlines. - Solution-Oriented Approach: I analyze your requirements, devise tailored solutions, and implement best practices to address your specific needs. - Collaboration and Communication: I believe in transparent and effective communication, working closely with clients to ensure their vision is realized. ✅If you are looking for a reliable and skilled System Engineer who can optimize your infrastructure, streamline your DNS management, and enhance your email delivery capabilities, I am here to assist you. Let's discuss your project requirements and take your systems to new heights of efficiency and reliability.

I am a Linux system administrator with 6+ years of experience specializing in captive portal systems (Coovachilli) on WiFi Guest Networks , particularly using FreeRADIUS for managing user access on wireless and wired networks for major Vendors such as TPLink, Unifi Ubiquity, and OpenWRT. I build robust, scalable solutions for bandwidth management, data caps, and session control. Am a certified FullStack Developer with Backend Specialization. My technical stack includes: 🔧 FreeRADIUS, CoovaChilli,OpenWisp, DD-WRT/OpenWRT/Omada Controller/ Unifi Cloud Controller Captive Portal Setup Specialist 📡 TPLink Omada Controller - Advanced Data Backup and Restoration 🐘 PHP — Backend APIs, portals, and admin dashboards 🐍 Python — Enterprise applications and automation scripts 💾 MySQL/MariaDB, PostgreSQL 🔐 Security hardening and performance optimization on Ubuntu/Debian servers I hold a Software Development Certification in Backend Full-Stack Development, and I deliver projects that are clean, documented, and production-ready. Why choose me? ✅ Top Rated – Top 10% on Upwork 📈 Proven results and client satisfaction 🤝 Professional, transparent communication 🔍 Deep understanding of backend systems and network access control Let’s collaborate and build something that works — securely and at scale.

I'm an experienced IT professional with over 12 years experience, I've with clients in various industries and have successfully transitioned companies of all sizes from on-prem infrastructure to cloud platforms. Some of the projects I've completed include. Some of my Azure, M365, and on-premises technology skills: • Microsoft 365 • Azure Active Directory • Azure Active Directory Domain Services • Active Directory Domain Services • Azure Virtual Desktop • Azure Storage • Azure virtual machines • Azure app services • Azure SQL • Azure SQL managed instance • Azure recovery services • ADFS • Microsoft Sentinel • Microsoft conditional access • AAD SSO • Google Workspace • Windows servers and workstations • Linux servers • PowerShell • Bash • Batch • JSON • Anti-malware and EDR platforms (Webroot, Bitdefender, Symantec, Kaspersky, Microsoft, SentinelOne) • Spam protection services (Proofpoint, Mimecast, Barracuda, Microsoft ATP) • WordPress • DNS • Sendgrid • Microsoft SQL • Vulnerability assessment • Operating systems hardening • Centralized patching • Firewalls • Managed Switches • Wireless Networking Certificates: Microsoft 365 Certified: Security Administrator Associate Microsoft 365 Certified: Enterprise Administrator Expert Microsoft Certified: Azure Solutions Architect Expert

Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I have a great deal of expertise in: * real time embedded systems * cross compilation/software construction * source control * network programming * system administration * kernel level programming/device drivers * image processing * performance and metrics

Currently, I am a full-stack developer with expertise in Go and over seven years of experience in creating CLI programs, desktop GUI applications for Linux and Windows, as well as mobile and web applications using Flutter (Dart). Additionally, I bring over 15 years of experience in other programming languages, including C/C++, PHP, and JavaScript (React, Vue), alongside extensive knowledge of networking spanning more than 15 years.