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I help businesses build, deploy, and scale reliable cloud infrastructure using modern DevOps practices. With 10+ years of experience as a DevOps Engineer and Technical Project Lead, I specialize in AWS, Kubernetes / Openshift , Docker, and CI/CD automation. I have successfully delivered cloud solutions across industries including eCommerce, manufacturing, finance, and SaaS platforms. What I can help you with: ✔ AWS / Azure / GCP Cloud Setup & Optimization ✔ Openshift , Docker & Kubernetes Deployment ✔ CI/CD Pipeline ✔ Infrastructure as Code (Terraform, Ansible) ✔ Server Setup (Linux, Redhat) ✔ High Availability & Load Balancing ✔ Performance Optimization & Monitoring I focus on delivering secure, scalable, and automated solutions that reduce downtime and improve efficiency. Let’s discuss how I can help your project succeed.

As a highly skilled and experienced professional with over 08+ years of expertise, I hold notable certifications such as CCNP, CCNA, RHCE, and Certified Ethical Hacker (CEH) . I have established myself as an accomplished network, system, and security engineer, capable of delivering complete solutions for designing, configuring, automating, and managing network and system projects. My proficiency in using simulation software such as Packet Tracer and GNS3, as well as real-life network and system devices, make me a valuable asset for any project. My few hands-on experiences is: ⭐Network Design by MS Visio, Cisco packet tracer, GNS3, and EVE-NG ⭐Netacad CCNA and CCNP packet tracer Labs activities, projects design and solution ⭐ Expert in configuring, managing, and troubleshooting Cisco routers, switches, FTD, FMC, and ASA firewalls. ⭐ Expert in configuring, managing, and troubleshooting Fortigate, Sophos, Check Point, SonicWall, Palo Alto, pfSense, OPNsense & Huawei firewalls, ⭐Netgear, Huawei, Aruba switch, DrayTek router, TP-Link and others vendor wireless router configurations. ✅Cisco, Tp-Link, Aruba, Fortinet, Ubiquiti, Planet, Huwei switch configurations. ⭐Proficient in configuring, managing, and troubleshooting Unifi Enterprise Fortress Gateway, UDM Pro, Unifi Cloudkey, USG UniFi Firewall , Security Gateway, Switch, and AP devices. ⭐Expert in Linux administration, with expertise in Ubuntu, Red Hat, openSuse, CentOS, Debian, and Kali Linux distributions. ⭐Expert in Windows server administration , Active Directory management, Exchange Server administration, DNS configuration, DHCP implementation, and Windows operating system support. ⭐Experienced in managing and configuring virtualization platforms including HYPER-V, VMware ESXi, VMware Workstation, KVM, VirtualBox, and Proxmox. ⭐Servers: HP Proliant Servers, Dell/EMC Servers, IBM ⭐MikroTik Routers configuration ✅ Cloud Administrator: Azure, AMAZON AWS , Google GCP, OVH and Digital Ocean ⭐VLSM/subnetting of small to large enterprises ⭐VLANs, Inter-VLAN routing, VTP, CDP, Ether-Channel(LACP, PAGP), Spanning Tree (STP, PVST++, MSTP), and FHRP Protocols ⭐IPV4 & IPV6 IP planning, DHCP, NAT/PAT configuration and IP helper address ⭐static and Dynamic Routing protocols (RIP, OSPF, EIGRP, BGP) configuration ⭐Layer-3 Redudent/backup links Using HSRP, VRRP ⭐Port security, ACL( access list) configuration ⭐Network troubleshooting and optimization ⭐VPN Configuration Expert (GRE , SSL, IPSEC, PPTP, OPENVPN , wireguard & DMVPN) ⭐Advanced Excel skills, including macro, VBA, VLOOKUP, and other automation techniques ⭐Network automation script for any cisco and fortigate devices using python ⭐ Skilled in automation using Bash/Shell scripting ✅Overlay Networks VPN Expertise: Proficient in configuring and managing various overlay network VPNs, including ZeroTier, Tailscale, WireGuard, SoftEther VPN, Netbird , Netmaker, OpenVPN Cloud, I, Twingate and PeerVPN for secure, scalable, and decentralized networking, enabling seamless remote access, team collaboration, and encrypted communications across distributed systems. ✅Beryl AX and Flint Router Configuration Expert ( Mini Router, Travel Router, Home Wi-Fi, cellular Router) like GL-MT6000, GL-AXT1800, GL-MT3000, GL-A1300 etc ✅Cisco Duo: MFA, 2FA, SSO, Identity Security Integration, Windows Logon, RDP, Microsoft AD, VPN Authentication.

Are you struggling with VoIP system issues, telecom compliance, or PBX deployment? With 10+ years of hands-on experience, I deliver end-to-end VoIP engineering and telecom compliance solutions that keep your business running and compliant. I specialize in: 🔧 VoIP Platform Expertise • 3CX (Advanced Certified) — design, deployment, migration, troubleshooting • FreePBX / Asterisk / Issabel / Elastix • FusionPBX / FreeSWITCH • PortaOne / PortaSwitch / Telinta • Grandstream UCM series • Yeastar S & P Series 📋 Telecom Compliance (Rare Specialty) • STIR/SHAKEN implementation & attestation • FCC Form 499 filing • OCN registration & filing • Robocall mitigation compliance 🌐 Network & Infrastructure • SIP trunk provisioning (Twilio, Bandwidth, Telnyx, VoIP.ms) • Fortigate, Sophos, SonicWall firewall configuration • QoS & VLAN setup for voice traffic • E911 configuration • Endpoint provisioning (Cisco, Poly, Yealink) ☁️ Cloud & Virtualization • MS 365, Azure, AWS • VMware vSphere / ESXi • Linux (RHEL, CentOS, Ubuntu) 🏆 Certifications • 3CX Advanced Certified • CCNA — Cisco Certified Network Associate • RHCSA & RHCE — Red Hat Certified • VMware Data Center Virtualization Notable projects include deploying VoIP platforms for banks, 2000+ user mail server deployments, and full data center virtualization implementations. I work with small carriers, CLECs, UCaaS providers, VoIP resellers, and businesses of all sizes. Whether you need a quick fix or a full system deployment — I deliver reliable, enterprise-grade solutions. Let’s talk about your VoIP challenges today.

Salesforce Architect | ERP & CRM Integration Specialist LLM Engineer | Generative AI | RAG | AI Agents I am a senior software engineer and AI integration specialist with 20+ years of experience delivering enterprise-grade software solutions, CRM/ERP implementations, cloud integrations, and AI-powered automation systems for global businesses. My expertise combines modern AI technologies with deep enterprise application experience, helping companies automate workflows, improve operational efficiency, and build scalable digital solutions. Over the years, I have worked extensively with Salesforce CRM, ERP platforms, enterprise databases, cloud infrastructure, data engineering, and business intelligence systems. Recently, I have focused heavily on Generative AI, LLM integration, Retrieval-Augmented Generation (RAG), AI agents, workflow automation, and AI-powered business systems. I specialize in building intelligent systems that connect OpenAI, LLMs, automation tools, APIs, CRM platforms, ERP systems, and enterprise applications into seamless business solutions. ━━━━━━━━━━━━━━━ 🚀 Core Expertise ━━━━━━━━━━━━━━━ ✔ Generative AI & LLM Engineering • OpenAI, GPT, Claude, Gemini integrations • RAG (Retrieval-Augmented Generation) • AI Agents & Autonomous Workflows • LoRA Fine-Tuning • AI Chatbots & AI Assistants • Prompt Engineering • AI Automation & Orchestration • Vector Databases & Embeddings • AI Integration with CRM & ERP systems ✔ Salesforce CRM Development & Architecture • Apex Development • Lightning Web Components (LWC) • Visualforce • Salesforce Flows & Automation • REST/SOAP API Integrations • Sales Cloud & Service Cloud • Salesforce CPQ • Security & Permission Models • Reports & Dashboards • Einstein AI Integration • Multi-system Integrations ✔ ERP & Enterprise Application Development • ERPNext / Frappe Framework • Workflow Automation • Business Process Optimization • Custom ERP Modules • API & Webhook Integration • Enterprise Data Synchronization ✔ Full Stack & Enterprise Development • Python, PHP, Laravel, CodeIgniter • JavaScript, ReactJS, Angular • ASP.NET, VB.NET, C# • REST APIs & Microservices • Kafka, TIBCO, Mulesoft • WebLogic & Enterprise Middleware ✔ Data Engineering & Business Intelligence • SQL, PL/SQL, PostgreSQL, T-SQL • Oracle Database Development • Google BigQuery • Azure & AWS Cloud Platforms • ETL Pipelines & Data Warehousing • SSIS, Informatica, Oracle Warehouse Builder • Power BI, SSRS, Crystal Reports • IBM Cognos Analytics ━━━━━━━━━━━━━━━ 🏆 Professional Highlights ━━━━━━━━━━━━━━━ • 20+ years of enterprise software development experience • 10+ years of Salesforce CRM implementation expertise • 21,000+ hours of successful project delivery • Delivered solutions for clients across USA, EU, Middle East, and APAC • Built AI-powered workflow automation systems for enterprise operations • Helped businesses reduce manual work, improve data visibility, and increase operational efficiency • Extensive experience in integrating AI with CRM, ERP, and enterprise ecosystems ━━━━━━━━━━━━━━━ 🎓 Salesforce Certifications ━━━━━━━━━━━━━━━ • Salesforce Certified Application Architect • Salesforce Certified Data Architect • Salesforce Certified Sharing and Visibility Designer • Salesforce Certified Administrator • Salesforce Certified Platform Developer I • Salesforce Certified Platform App Builder ━━━━━━━━━━━━━━━ 💼 What I Help Businesses Achieve ━━━━━━━━━━━━━━━ ✔ Intelligent AI-powered automation ✔ Faster and more efficient workflows ✔ CRM and ERP optimization ✔ Enterprise system integrations ✔ Better business insights through analytics ✔ Reduced manual operations ✔ Scalable and secure cloud solutions ✔ AI-enhanced customer engagement ━━━━━━━━━━━━━━━ 🤝 Why Clients Work With Me ━━━━━━━━━━━━━━━ • Strong combination of AI + Enterprise Software expertise • Deep understanding of business operations and automation • Reliable communication and fast delivery • Proven experience in large-scale enterprise systems • Focus on long-term scalable solutions • Ability to bridge technical implementation with business goals I am passionate about helping businesses modernize their operations using AI, automation, Salesforce, and enterprise technologies. If you are looking for an experienced AI engineer, Salesforce expert, ERP specialist, or enterprise integration consultant who can deliver reliable and scalable solutions, I would be happy to collaborate with you.

I am a Linux & Windows System Administrator and DevOps Engineer with over 8 years of experience, specializing in server management, automation, and cloud infrastructure. I help businesses maintain secure, high-performance, and scalable IT environments. My expertise includes: ✔ Linux & Windows Server Administration: Linux: Debian, CentOS, Ubuntu, RHEL – maintenance, troubleshooting, and optimization. Windows Server: Active Directory, Group Policy, IIS, Remote Desktop Services, DNS, DHCP, and PowerShell automation. ✔ DevOps & Automation: CI/CD pipelines, Ansible, Docker, Kubernetes, Terraform, Jenkins, and GitLab CI/CD. ✔ Cloud & Virtualization: AWS, Google Cloud, DigitalOcean, Azure, VMware, and KVM-based solutions. ✔ Web Servers & Performance Tuning: Apache, Nginx (with PHP-FPM/FastCGI), MySQL, Varnish, Memcached. ✔ Odoo ERP: Deployment, configuration, maintenance, and troubleshooting. ✔ Networking & Security: iptables, rsync, BIND, OpenVPN, Windows Firewall, network troubleshooting. ✔ Email Servers & Deliverability: Exim, Dovecot, Postfix, Microsoft Exchange, MailEnable – setup and troubleshooting. ✔ Backup & Migration: Secure and seamless server, database, and email migration. ✔ Control Panels: WHM/cPanel, Virtualmin, Plesk – installation and management. ✔ Monitoring & Logging: Zabbix, Munin, Nagios, ELK Stack (Elasticsearch, Logstash, Kibana), Windows Event Viewer. ✔ Lost Data Recovery: Helping recover critical data from both Linux & Windows environments. I am committed to providing secure, efficient, and scalable solutions for businesses. If you need assistance with server management, DevOps automation, Windows/Linux support, or performance optimization, feel free to reach out!

Hi, I am Sazedur Rahman, working as a System Engineer for Linux/Unix-like OS Based Systems in a Reputed Financial Organization. I am new to Upwork but have more than five years of profound Experience in Linux/Unix System Administration, Configuration, Server Security and Automation. Completed various Live projects such as Authoritative DNS, DNSsec, Caching DNS, Zimbra Multi-Server Mail Solution, Multiple Web Server using Apache and NGINX, Local Repository for Linux Distributions Like- CentOS/Ubuntu & EPEL/Zimbra/RemiPHP, File Server Integrated with Windows AD for more than 8K Users, IPA Server, NTP Server, Cockpit Server, Secure File Sharing with Next Cloud. Expertise in - Linux Server Configuration- Web, Mail, DNS, Virtual Hosting, Samba, NFS, FTP, HA Cluster, Apache/NGINX with SSL/TLS, Gluster Storage (GFS2), Zimbra Mail Server, Red Hat Satellite, Spacewalk (open-source systems management), Linux System Security - Firewalld, iptables, fail2ban System Automation using- Shell Scripting, Ansible, Python Linux System Penetration Testing using OpenSCAP. Virtualization- vmware, rhev, kvm Kubernetes, Docker, Container Also certified as CCNA, RHCE, RHCVA & RHCA (Red Hat Cert ID: 160-039-582).