Hire the Best Sparx Systems Enterprise Architect Specialists
in Bangladesh

With 19+ years of hands-on experience, I help businesses reduce infrastructure risk and improve system reliability by designing, securing, and maintaining production-grade Linux environments, blockchain and crypto exchange systems, and automated trading solutions. I also specialize in building and supporting scalable SMS and VoIP infrastructure using Telnyx, Twilio, and VoIP.ms, engineered for stability, performance, and long-term operational reliability. Upwork Client's feedback: "A complete expert in Linux. Very collaborative freelancer." "Honest and reliable freelancer. A joy to work with." "Good and hardworking worker. Very honest as well." "Highly skilled Linux engineer, with a deep understanding of the ins and out of drivers and the essence of the OS" With extensive hands-on experience delivering mission-critical infrastructure, I focus on stable systems, fast troubleshooting, and enterprise-grade execution. Let’s discuss your requirements on upwork and define the right technical solution for your project.

🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 - Delivering nearly a 𝗱𝗲𝗰𝗮𝗱𝗲 𝗼𝗳 𝗢𝗿𝗮𝗰𝗹𝗲 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 and 𝗼𝘃𝗲𝗿 𝟭𝟱+ 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗰𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 across the 𝗢𝗿𝗮𝗰𝗹𝗲 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝘀𝘁𝗮𝗰𝗸 - covering development, integration, implementation, consulting, and AI-driven enterprise automation for mission-critical systems. Whether you're modernizing Oracle ERP, building enterprise web applications, integrating third-party systems, or creating AI assistants that interact securely with your data, I deliver scalable, secure, and production-ready solutions. 📊 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝗧𝗿𝗮𝗰𝗸 𝗥𝗲𝗰𝗼𝗿𝗱 • Performed process discovery, feasibility analysis, and solution design for automation candidates across multiple business functions. • Architected AI agent development and automation workflows using n8n and custom bots. • Integrated global CRM platforms (including NetSuite, Salesforce, and Creatio). • Designed and delivered end-to-end EBS to POS integrations for NIKE, ADIDAS, LEVI'S, and PUMA retail operations in Bangladesh (Oracle EBS R12.2.x). • Built and deployed RPA solutions in UiPath Studio + Orchestrator, improving process automation by 40% • Core team member on an Oracle Fusion Cloud Supply Planning implementation. • Developed multiple customized systems across government and enterprise clients. • Delivered inbound/outbound integrations across EBS and Fusion Cloud using OIC, VBCS, FBDI, and BI Publisher. • Completed multiple end-to-end data migration projects. • Top Rated with a 100% Job Success Score on Upwork. 🏢 𝗖𝗼𝗿𝗲 𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 • 𝗢𝗿𝗮𝗰𝗹𝗲 𝗙𝘂𝘀𝗶𝗼𝗻 𝗖𝗹𝗼𝘂𝗱 𝗣𝗮𝗮𝗦 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: OIC, Fusion Cloud APIs, VBCS, PCS, FBDI, HDL, BI Publisher, OTBI • 𝗥𝗣𝗔 & 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: UiPath Studio, UiPath Orchestrator, Process Discovery, n8n AI automation • 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Oracle APEX, Oracle ADF, OAF, Oracle Forms/Reports 6i–12c, PHP, Laravel • 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 & 𝗪𝗲𝗯 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: REST/SOAP APIs, Web Services, Microservices, ORDS, Oracle SOA Suite • 𝗜𝗻𝘁𝗲𝗿𝗳𝗮𝗰𝗲𝘀 & 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻𝘀: Standard APIs, Open Interface tables, data conversions, WebADI • 𝗢𝗿𝗮𝗰𝗹𝗲 𝗘-𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗦𝘂𝗶𝘁𝗲 (𝗘𝗕𝗦 𝗥𝟭𝟮.𝟮.𝘅): Purchasing, iProcurement, iSupplier, Sourcing, Inventory, Landed Cost Management (LCM), Order Management, Advanced Pricing, AP, AR; P2P and O2C cycles; RICEW development (Reports, Interfaces, Conversions, Extensions, Workflows) • 𝗢𝗿𝗮𝗰𝗹𝗲 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝗖𝗹𝗼𝘂𝗱 (𝗢𝗜𝗖): real-time and event-driven integrations, ORDS, inbound/outbound interfaces, middleware • 𝗣𝗟/𝗦𝗤𝗟 & 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: SQL, PL/SQL, Oracle Database 10g–19c, BI/XML Publisher, Oracle Workflow, WebLogic Server administration 📋 𝗠𝘆 𝗘𝗻𝗴𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗣𝗿𝗼𝗰𝗲𝘀𝘀 Every architecture is unique. My approach centers on deep technical assessment, clear risk identification, and structured remediation: ▪️Discovery & Architecture Audit: Map out dependencies, evaluate configuration drifts, and identify security or compliance gaps. ▪️Strategic Blueprinting: Deliver a pragmatic roadmap aligning technical execution with regulatory and operational requirements. ▪️Execution with Zero Disruption: Implement, migrate, or harden the stack using proven change-management strategies to maintain business continuity. ▪️Documentation & Knowledge Transfer: Provide clear, audit-ready SOPs and technical documentation so your internal teams can maintain operations cleanly. ✉️ 𝗟𝗲𝘁'𝘀 𝗧𝗮𝗹𝗸 If you are looking to modernize Oracle systems, integrate fragmented platforms, or build a scalable enterprise application ecosystem, I can help you design and deliver it end-to-end. Click the “𝗜𝗻𝘃𝗶𝘁𝗲” or “𝗠𝗲𝘀𝘀𝗮𝗴𝗲” button. Please include a brief summary about the current systems you need assistance with. If you have new ideas or projects, it helps to have a short summary of what the system or process needs to do.

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.

𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 — RAG Systems · AI Agents · LLM Integration · SaaS at Scale Most developers can wire up an API call to OpenAI. That's not AI engineering. I build AI systems that actually work in production — agents with memory, multi-step reasoning, tool use, and guardrails. RAG pipelines that retrieve the right context, not just any context. Local LLM deployments that run on your infra, not someone else's cloud. Workflow automations that handle real business logic, not toy demos. I'm a full-stack software engineer with 6+ years of production experience, currently operating as lead backend & system engineer at an AI-first SaaS company where I'm actively building and shipping AI products — not studying them. Right now I'm building Nodi AI — an AI-powered CRM and messaging platform — where I've designed the entire AI layer: customer support agents with persona engineering and multi language switching, RAG-based knowledge retrieval, multi-channel inbox automation (Facebook, Instagram, WhatsApp, Line, LinkedIn), and event-driven webhook architectures. I own the system end-to-end, from LLM prompt architecture to AWS ECS deployment. I've also built and operate RentaBD, in production, a vehicle rental SaaS platform, designed from scratch — architecture, infrastructure, scaling, and business logic — solo. --- 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝗳𝗼𝗿 𝘆𝗼𝘂 AI agents & automation — Customer support agents, lead qualification bots, internal ops agents. Multi-turn memory, tool-calling, escalation logic, persona engineering. RAG pipelines — Vector search, embedding strategies, hybrid retrieval, context window management. Built on OpenAI, Anthropic, Gemini, DeepSeek, or your own local models. Local LLM deployment — On-premise inference stacks using Ollama, LM Studio, or custom setups with Mistral, Llama, Qwen, and others. Full privacy, no API costs. LLM integration into existing products — Drop AI into your existing SaaS without rebuilding it. I'll design the integration cleanly and make it maintainable. Full-stack SaaS & backend systems — NestJS/Node.js backends, Laravel APIs, Vue/React frontends, PostgreSQL, Redis queues, Docker, AWS. Production-grade, not prototype-grade. --- 𝗧𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸 (𝗔𝗜) OpenAI API · Anthropic Claude · Gemini / DeepSeek · LangChain / custom RAG · Vector DBs (pgvector, Pinecone) · Prompt engineering · Local LLM (Ollama / Qwen) · AI agent design · Workflow automation 𝗧𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸 (𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 & 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸) AWS ECS / EC2 / RDS / S3 · Docker / CI/CD · CloudFront / ALB · NestJS / Node.js · Laravel / PHP · Vue.js / React / TypeScript · PostgreSQL / MySQL / Redis · Meta APIs (FB, IG, WhatsApp) --- 𝗪𝗵𝗼 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗲𝗹𝗹 𝘄𝗶𝘁𝗵 Founders building AI-first products. Teams adding AI to existing SaaS. Businesses that need automation done properly, not hacked together. Clients who value systems that still work six months from now. I communicate clearly, deliver in structured milestones, and don't disappear once the first version ships. I've worked with clients in Ireland, Australia, the UK, and India — async communication is second nature.

As an Open-Source Solutions Specialist, I help businesses gain control over their software stack by implementing powerful, secure, and scalable open-source alternatives to expensive proprietary platforms. Are you looking to reduce recurring software fees or need a custom solution that fits your exact needs? I specialize in deploying and managing a wide range of open-source applications, from comprehensive ERP systems to robust server environments. ✅ My Open-Source Implementation Services: ERP & CRM Systems: Full setup, customization, and maintenance for Odoo, ERPNext, SuiteCRM, and other platforms to manage sales, inventory, and accounting.   Linux System Administration: Expert configuration, hardening, and management of servers running Ubuntu, Debian, and CentOS for optimal performance and security.   DevOps & Automation: Implementing CI/CD pipelines with Jenkins and GitLab CI, containerizing applications with Docker, and automating configuration with Ansible.   Web & Application Hosting: Deploying and managing web servers (Nginx, Apache), databases (PostgreSQL, MySQL), and self-hosted applications like Nextcloud and WordPress.   ✅ Key Open-Source Technologies: Business Applications: Odoo, ERPNext, SuiteCRM, Magento, WooCommerce.   Operating Systems: Linux (Ubuntu, CentOS, Debian), FreeBSD.   DevOps & Containers: Docker, Kubernetes, Jenkins, Ansible, Git.   Virtualization: Proxmox VE, KVM, VMware.   Web & Database: Nginx, Apache, PostgreSQL, MySQL/MariaDB.   Let's connect to discuss how a tailored open-source solution can empower your business.

Cloud Infrastructure and Platform Engineering professional with extensive experience in designing, deploying, and managing enterprise-scale cloud platforms and mission-critical infrastructure. Expertise in OpenStack, Kubernetes, virtualization, software-defined storage, Linux, automation, and cloud networking. Certification: 🥇 Certified Kubernetes Administrator (CKA) 🥇 Red Hat Certified Engineer (RHCE) 🥇 Red Hat Certified System Administrator (RHCSA) 🥇 Red Hat Certified Specialist in Virtualization (RHCVA) Skills and Specialties: ✅ Virtualization & Cloud: OpenStack, Proxmox, Docker, Kubernetes, KVM, AWS ✅ Storage: Ceph, TrueNAS, ZFS, GlusterFS, iSCSI, NFS ✅ Cloud Networking: OVN, OVS, VXLAN, VPN, Load Balancers, Firewalls, GSLB ✅ Automation & DevOps: Ansible, Bash, Terraform, Git, CI/CD ✅ Monitoring & Observability: Zabbix, Prometheus, Grafana, Alertmanager, Node Exporter, ELK ✅ Infrastructure Services: DNS, NTP, Mail Systems, Web Servers, cPanel/WHM ✅ VoIP: Asterisk, FreePBX, Vicidial, Voice Gateway, SS7 Media Gateway