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Freelancer, having 10+ years of experience as a Linux/Windows System Administrator, Devops and Cloud Engineer. I am well experienced in System Administration, so including but not limited to: Artificial Intelligence(AI): Installation of python, pip, tensorflow and pytorch Building with CUDA(NIVIDIA GPU)/ROCM (AMD GPU) support. MongoDB Replicaset on multi-node docker container. PostgreSQL High Availability with multi-node Docker and Keepalived Postgresql cluster, high availability, Load balancing. Master-master Replication. GlusterFS Replication and Geo-replication. Mail Server: Zimbra, postfix, sendmail, PowerMTA Web Server: Apache, Tomcat, Nginx Scripting: shell scripting Control Panel: Plesk, WHM, Cpanel, Webmin, Virtualmin Virtualization: KVM, VMware, Citrix Xen Server, VMware Esxi, Proxmox, Advanced KVM command-line Security Compliance: PCI-DSS, DISA STIGs. Devops Tools: Docker, Docker-compose, Jenkins, GitHub,Vagrant, Vagrant with Docker as provider , Ansible, Foreman, Docker Swarm Network: Router configuration of cisco router, modem. IP subnetting. Database: Mysql, Postgresql, Oracle, MS-SQL Accounting: Tally 6.3, Tally ERP 9 on Linux Operating System: Debian-{8,9,10}, Centos-{3,4,5,6,7}, Ubuntu-{12,14,16,18,20.04,22.04}, Windows server -{2003, 2008, 2012, 2016, 2019,2022} Private cloud: Eucalyptus (Ubuntu Enterprise cloud), OpenNebula Cloud: AWS, Gcloud, Azure create VPC, public-private subnet, route table, Internet gateway, network acl, amazon ec2 instance Migration, updation. ERP: ERPnext Multitenant, ERPnext in Google Cloud K8s cluster with CEPH storage Log Server: Solarwind Kiwi syslog Domain Server: Windows AD, Samba4 Server provisioning and PXE installation for Linux and Windows. Source code Compilation and Cross compilation for various architecture. Server Administration, Webhosting, Web migration, Web and DB performance tuning, SSL Certificate Installation, Shell scripting, Deployment of various software and server, Mail server etc. Linux Distros: Kiosk live image. FFMPEG, v4l2loopback, Proxy: Haproxy

Specializing in C#, .NET Ecosystem, Hardware Integration & Office Automation If you are looking for a developer who can bridge the gap between sophisticated web interfaces, high-performance desktop systems, and physical hardware—you are in the right place. With 12+ years of experience, I architect "mission-critical" solutions designed for longevity, whether they live in the cloud or on a local workstation. ⭐ "Subhodeep is an excellent programmer... Clean code, in sync with architecture." ⭐ "I am very impressed by Mr. Bhattacharjee's professional programming skill... Very satisfied and thankful." 🔹 Why I am the Top Choice for Your Project While many developers specialize in only one area, I offer a unified approach to the Microsoft stack. My solutions are famous for their longevity—many of my enterprise applications have been running glitch-free for 12+ years in high-pressure production environments. I provide the stability of a desktop expert with the modern flexibility of a web developer. 🛠 Technical Arsenal 1. Enterprise Web Development Modern Core: Architecting scalable web apps using ASP.NET Core and MVC. Frontend Mastery: Creating responsive UIs with React, JavaScript, and jQuery. Legacy Support: Maintaining and modernizing ASP.NET WebForms applications. 2. Advanced Windows UI/UX Development WPF (MVVM): High-performance, modern interfaces with complex data binding. WinForms: Legacy-to-modern migrations and rapid, stable business tools. Enterprise Toolkits: Expert-level implementation of DevExpress and Telerik. MAUI: Extending desktop power to cross-platform mobile environments. 3. Hardware & Industrial Integration Communication: Deep mastery of TCP/IP, RS-232, and Serial Port protocols. Peripherals: Seamless integration for RFID Readers, Barcode Scanners, and industrial sensors. 4. Microsoft Office Automation (VSTO) Custom enterprise-grade Add-ins for Excel, Outlook, Word, and PowerPoint. Creating seamless bridges between Office tools and internal databases. 5. Data Architecture & Smart Logic Databases: SQL Server, SQLite, and Entity Framework (Core & Full). Data Processing: Complex CSV, XML, and JSON manipulation at scale. ✅ The Guarantee of Senior-Level Engineering Zero Technical Debt: I write clean, maintainable code using SOLID principles. Full-Stack Ownership: From hardware handshakes and database design to the final Web API or Desktop UI. Architectural Precision: Focused on memory management, speed, and Windows API optimization. 🚀 Stop looking for multiple freelancers. Whether you need to digitize your entire operation, build a React-based dashboard for your desktop tools, or solve a complex hardware-software conflict, I will deliver a robust, future-ready solution. Let's discuss your project today!

15+ years of experience(Full time Freelancer) , 9 years specializing in designing, implementing, and managing cloud-based solutions with expertise in Azure Cloud, Intune, Microsoft Endpoint for defender, Entra ID and modern workplace (M365) setup. Proven ability to lead large-scale cloud migration projects, optimize enterprise infrastructure, and deliver innovative solutions that drive business performance. Service offering :- • Designing and deploying cloud infrastructure using Azure services (IaaS & PaaS) . • Planning and executing the migrating on-premises applications and workloads to Azure cloud environment. • Building automation platforms by utilizing infrastructure as code (Infrastructure-as-a-code) to provision, deploy and manage Microsoft Azure cloud infra. • Implementing cost optimization strategies, leading to a reduction in monthly cloud expenses. • Conducting a comprehensive assessment of the existing VDI environment and recommend suitable solution. • Designed a new architecture for Azure Virtual Desktop, Citrix Cloud, Workspot, Horizon. • I offer fully white-labeled IT and Cloud services, allowing you to provide end-to-end solutions to your clients while I operate in the background under your brand. • Designing and configuring Intune solution to manage endpoint devices. • Supporting Entra ID solution to manage the cloud based identities. • setting up Microsoft endpoint for defender solutions. • Configuring M365 solution i.e Outlook, Team, One Drive for middle scale to enterprise customers. I also help global organizations establish and manage their IT infrastructure in India, Philippines location. ensuring a secure, scalable, and cost-effective setup aligned with international standards. My services includes: • Network design and implementation for office environments • Desktop and laptop deployment and configuration • Thin client setup and integration with VDI platforms • End-to-end Virtual Desktop Infrastructure (VDI) design and deployment (Azure Virtual Desktop, Citrix, etc.) • Setting up Intune for managing devices. • IT infrastructure planning for new office setups or remote teams Azure Infrastructure :- Compute: Virtual Machines, App Services, Networking: VNet, DNS, VPN Gateway, Private Link Storage: Azure Blob, File Shares, Queue, Disks Security: Azure AD, Key Vault, Microsoft Defender, RBAC, Conditional Access Dev Tools: Azure DevOps, GitHub, Repos, Artifacts I am certified in: • Microsoft Certified: Azure Administrator Associate • MCP on 70-270 (Installing, Configuring, and Administering Windows XP Professional) in the year of 2008 • MCP on 70-290 (Managing and Maintaining a Microsoft Windows Server 2003 Environment) in the year of 2008 • CCA Certified- XenServer • CCA Certified -XenApp 6.5 • CCA Certified – XenDesktop 5.0 • CCAA-- XenApp6.5 • Citrix Certified on XenApp/XenDesktop 7.6 (CCA-V). • Azure Virtual Desktop Specialty. Feel free to reach out to me at any time!

🔧 System Engineer for Application Packaging and SCCM/Intune 🔧 Are you in need of a seasoned System Engineer with a wealth of experience in End User Computing (EUC), Application Packaging, and Mobile Device Management (MDM)? Look no further! With over 12 years of expertise in these domains, I bring unparalleled skills to help you streamline your IT infrastructure. 👩‍💻 Here's what I bring to the table: ✅ End User Computing (EUC): With a decade of hands-on experience, I've mastered the art of delivering seamless user experiences. From Application Packaging and Virtualization to End User Computing Services, I've got you covered. ✅ Application Packaging: I'm an expert in tools like AdminStudio, InstallShield, and ORCA, ensuring your applications are packaged efficiently for deployment. ✅ Deployment Mastery: I specialize in deploying applications using SCCM and Intune, making software distribution across your organization a breeze. ✅ Application Virtualization: Whether it's App-V, MSIX, or traditional MSI/MSIX packaging, I can optimize your software delivery process. ✅ Infrastructure Automation: I believe in efficiency, and that's why I excel in automating infrastructure tasks, saving you time and resources. ✅ Tools & Technologies: I am proficient in a range of tools, platforms, scripting languages, and software, including: Flexera AdminStudio InstallShield Windows Installer (MSI, MSIX) Visual Basic Script PowerShell PowerShell App Deployment Toolkit SCCM 🚀 My mission is to simplify your IT operations, boost productivity, and reduce downtime. When you work with me, you're not just getting a freelancer – you're gaining a trusted partner in optimizing your IT ecosystem. Let's collaborate to elevate your organization's efficiency and user satisfaction. Feel free to reach out, and let's discuss how I can contribute to your success!

I help product teams launch reliable web, mobile, and desktop applications by combining manual testing, automation frameworks, and performance validation. My priority is to detect high-impact issues early, deliver actionable bug reports, and ensure each release upholds the highest quality standards. 🏆 Top-rated freelancer with 4+ years of professional QA experience 🛠️ Expert in Manual Testing Methodologies 💻 Automation Expert | Cypress | Playwright 📋 Skilled in Project Management Tools like Jira, ClickUp, Trello, and Asana 📝 Proficient in Creating Robust Test Cases and Executing Various Types of Testing (Functional, Regression, Performance, etc.) 🔍 Proficient in API Automation Testing using Postman 🚀 Experienced in Managing CI/CD Pipelines 💬 Excellent Communication and Collaboration Abilities 🧠 Strong Analytical and Problem-Solving Skills I’m a QA Engineer with solid expertise in Cypress + JavaScript automation, alongside proficiency in other programming languages. My approach blends technical depth, attention to detail, and workflow automation skills to ensure smooth development cycles and dependable product releases. Testing Skills: ------------------------- - Requirement Analysis - Test Case Design & Execution - Defect Reporting & Management - Functional Testing - End-to-End Testing - Integration Testing - Exploratory Testing - Regression Testing - Cross-Browser Testing - Mobile App Testing (iOS & Android) - Usability Testing - UI/UX Testing - System & Acceptance Testing - API Testing (Postman) - Performance Testing (JMeter/LoadRunner) - Automation Testing (Cypress, JavaScript/Typescript) Expertise with Tools & Platforms: ---------------------------------------------- - Bug Tracking & Management: JIRA, Trello, Asana, Linear - Collaboration & Reporting: Google Sheets, Notion, Slack - Testing Platforms: BrowserStack, physical devices - Documentation: Test Plans, Test Cases, Checklists, FRS, User Manuals Domains: ----------- - Education - Real Estate - eCommerce & Retail - Media & Entertainment - Healthcare & Life Sciences - Email Marketing and Lead Generation Devices: ---------- - HP EliteBook Windows 11 - MacBook Pro (macOS Sequoia) - iPad - 10th Generation - iPhone XS - iPhone 14 Plus - iPhone 16 Pro Max - Google Pixel 7 - Samsung S22 With a strong commitment to delivering error-free, high-performing software, I aim to exceed quality expectations and provide products that users love. I am available for flexible timings across any time zone and dedicated to helping you bring your software to the highest standards of performance and user satisfaction. ✅ Relevant Skill: Software QA . Functional Testing . Mobile App Testing . Web Testing . Manual Testing . Bug Reports . Software Testing . Automated Testing . Usability Testing . Android . Test Case Design . iOS . Smartphone . End-to-End Testing . Quality Assurance . QA Testing . Bug Tracking & Reports . Performance Testing . JavaScript . Jira . API . Testing . Python . QA Engineering.

Senior .NET Engineer with 14+ years of experience building enterprise applications, AI-powered solutions, API integrations, CRM/ERP automation, and scalable backend systems. I help businesses automate operations, connect disconnected systems, and build reliable software that scales. Over the years I've developed: • AI-powered applications using OpenAI and custom workflows • CRM and ERP integrations (Zoho CRM, custom ERPs, third-party APIs) • Enterprise-grade REST APIs and backend systems • SaaS platforms and business automation solutions • Financial planning and reporting systems • Data migration, transformation, and synchronization pipelines Recent projects include: ✔ ERP ↔ Zoho CRM Integration with bidirectional sync ✔ OpenAI-powered decision engines and chat systems ✔ Azure Function–based automation platforms ✔ Enterprise document processing and PDF generation systems ✔ Large-scale JSON, SQL, and data transformation projects Technical Expertise: • C# • .NET Core / ASP.NET MVC • ASP.NET Web API • SQL Server • Azure Functions • OpenAI APIs • JavaScript • Angular • React • Entity Framework • DevExpress • REST APIs • OAuth • Webhooks • CRM & ERP Integrations Why clients hire me: ✓ 14+ years of professional experience ✓ 100% Job Success ✓ Top Rated Freelancer ✓ Strong communication ✓ Focus on long-term client relationships ✓ Production-ready solutions, not quick fixes If you're looking for an experienced engineer who can understand complex business requirements and deliver reliable software, let's discuss your project.