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I build enterprise-grade .NET systems that businesses actually run on. Dynamics 365 CRM, SharePoint solutions, healthcare integrations, and accounting platforms built for real production load. 8 years doing this, not learning it. I currently work in an enterprise healthcare environment building HIPAA-conscious integrations and Dynamics 365 CRM systems that large teams depend on daily. The same standard applies to every project I take on Upwork. Backend: ASP.NET Core, .NET 8, C#, REST APIs, Microservices, Entity Framework, SignalR. Enterprise: Dynamics 365 CRM customization, plugins and workflow automation, SharePoint on-premises solutions, document libraries and governance. Healthcare: FHIR, HL7 and eCR integrations with HIPAA-conscious design. Frontend: React, Next.js, TypeScript. Database: SQL Server and PostgreSQL, design, optimization and administration. DevOps: Linux and Windows servers, Docker, Azure DevOps, Nginx, production API deployments. I deploy and operate what I build, not just hand off code. You can verify this right now: mobileinventory.store is a multi-tenant SaaS I built and run end to end. I tell you what is hard before we start, not after. If your project needs production-grade .NET, CRM, SharePoint, or healthcare integration work, let us talk straight about what it actually takes to get it right.

Experienced Full-Stack Developer & IT Infrastructure Specialist with 10+ years of hands-on expertise in web application development, cloud infrastructure, network security, and enterprise server administration. I help businesses design, deploy, secure, and maintain scalable solutions that improve operational efficiency and business continuity. Core Technical Expertise Mobile & Web Development • Ionic Framework (Hybrid Mobile App Development) • Angular (Enterprise Web Applications) • Laravel (Custom Web Applications & APIs) • REST API Development & Integration • MySQL Database Design & Optimization • Responsive UI/UX Development Cloud & DevOps • AWS Cloud Infrastructure • EC2, S3, RDS, Route 53, CloudWatch • Server Migration & Deployment • Backup & Disaster Recovery Planning • Performance Optimization & Monitoring Network Security & Firewall Management • Sophos Firewall Deployment & Support • Fortinet Firewall Configuration & Troubleshooting • VPN Setup (IPSec, SSL VPN, Site-to-Site VPN) • Network Security Hardening • Firewall Policy Management • Threat Prevention & Security Best Practices Windows Server Administration • Windows Server Installation & Maintenance • Active Directory Design & Management • Group Policy (GPO) Configuration • DNS, DHCP, File & Print Services • User & Access Management • Server Migration & Upgrades • Backup & Recovery Solutions What I Can Help You With: ✔ Ionic Mobile App Development ✔ Angular Frontend Development ✔ Laravel Backend Development ✔ AWS Cloud Setup & Administration ✔ Sophos Firewall Configuration & Support ✔ Fortinet Firewall Support & Troubleshooting ✔ Active Directory & Windows Server Administration ✔ VPN Configuration & Remote Access Solutions ✔ Server Performance Optimization ✔ Network Security Audits ✔ Infrastructure Monitoring & Maintenance ✔ Emergency Technical Support Why Clients Work With Me: • 10+ Years of Professional Experience • Strong Problem-Solving & Troubleshooting Skills • Reliable Communication • Security-First Approach • Fast Response Time • Long-Term Support Available • 24/7 Availability for Critical Issues and Infrastructure Support Whether you need a full-stack developer, cloud engineer, firewall specialist, or Windows Server administrator, I can provide end-to-end solutions tailored to your business requirements. I am committed to delivering secure, scalable, and high-quality results on time and within budget. Let's discuss your project and find the best solution for your business.

Top Rated Plus OTT/CTV Expert | 250+ Apps Certified | Roku, FireTV, AppleTV, Android TV, Tizen, webOS, Vizio. Created a custom microdrama platform with Mobile apps, TV apps and CMS. Most OTT projects fail during the certification phase or due to poor cross-device scaling. At HexaBrain, we don’t just build apps; we architect streaming ecosystems that pass store audits on the first try. With 15+ years of experience and an in-house team of 35+ specialists, we bridge the gap between your content and every major screen in the living room. Whether you are launching a niche SVOD service or a global AVOD network, we provide the technical backbone that handles the heavy lifting. Why clients choose HexaBrain: Zero-Friction Certification: 250+ apps successfully launched onRoku, FireTV, AppleTV, Android TV. We know the rejection pitfalls, so you don't have to. Niche Technical Edge: Expertise into SVOD, TVOD and also CDN integration like Bunny.net, AWS or MUX. Full-Stack Ownership: From custom CMS development to high-performance Backend APIs and CDN optimization. Platform Specialization: Roku: SceneGraph & BrightScript (Deep Custom UX) Same way native TV apps for AppleTV, Android TV, FireTV. Smart TVs: Samsung (Tizen), LG (webOS), Comcast (Xfinity/Lightning JS), VIZIO Mobile & Web: iOS (Swift), Android (Kotlin), and React-based responsive web. Stop worrying about the tech stack and start focusing on your content. Message me today to discuss your roadmap.

👨‍💻 Professional Summary I am a seasoned software engineer with over 13 years of experience specializing in video streaming, web development, and mobile application development. Throughout my career, I have architected and delivered custom solutions for: Video transcoding and live recording Video conferencing and real-time chat IP camera and IPTV channel restreaming Interactive media applications and rich video UIs My development philosophy emphasizes starting with a proof of concept (PoC) or live demo to ensure mutual clarity and alignment before initiating full-scale implementation. This approach consistently helps streamline project expectations and delivery. 🎓 Academic Background Postgraduate Degree (2007) Began my professional career working with Java EE technologies including Struts, Spring, and Hibernate. 📱 Mobile & Real-time Communication Experience Developed core Android applications since 2010 Built XMPP-based chat apps for iOS Integrated real-time communication systems using WebRTC, Socket.IO, and Node.js 🎥 Video Streaming Expertise Hands-on experience with major streaming platforms including Wowza, Red5, and Adobe FMS since 2009 Built custom WebRTC-based solutions using Node.js, React.js, Socket.IO, Livekit and HTML5 Developed tools with Fabric.js for HTML5 canvas-based video editing and live drawing overlays 💡 Work Ethic I believe that dedication, transparency, and an honest effort are key to achieving successful outcomes. I continuously strive to adopt evolving technologies that enhance end-user experience and system performance.

I help businesses build reliable, scalable communication systems and web applications by combining deep expertise in VoIP (3CX & Yeastar) with full-stack development and API integrations. With 6+ years of experience in 3CX, hands-on expertise in Yeastar Cloud PBX, and 3+ years in full-stack development, I specialize in delivering end-to-end solutions — from telephony infrastructure to CRM integrations and custom dashboards. 🔥 What I Can Do For You ☎️ VoIP & PBX Solutions (3CX + Yeastar) 3CX setup, configuration & troubleshooting (V18/V20) Yeastar Cloud PBX deployment & management SIP Trunk integration (Twilio, Telnyx, Flowroute, etc.) IVR, Call Queues, Ring Groups, Call Routing Predictive / Progressive Dialer setup Call recording, reporting & analytics Multi-tenant PBX architecture DID management & call flow optimization 💻 Full Stack Development Backend: PHP, Node.js, Golang Frontend: JavaScript, HTML, CSS, Bootstrap, Tailwind Database: MySQL, PostgreSQL Build scalable CRM systems & dashboards WebRTC / SIP dialer development Real-time systems & automation workflows 🔗 API Development & Integrations (Swagger/OpenAPI) REST API design & development Swagger/OpenAPI documentation CRM integrations (Zoho, Salesforce, Monday, etc.) Webhooks, automation, and data sync systems 🌐 WordPress Development Custom theme & plugin development Website optimization & speed improvements API integrations with WordPress Business websites & landing pages 💡 Why Clients Choose Me ✔ 6+ years in VoIP & telephony systems ✔ Strong backend + infrastructure understanding ✔ Fast troubleshooting & problem-solving ✔ Clean, scalable, production-ready solutions ✔ Excellent communication & long-term support 📌 Recent Work Highlights Built multi-company 3CX dialer system with CRM integration Deployed Yeastar Cloud PBX for international clients Developed VoIP analytics dashboards & call tracking systems Integrated Twilio / Telnyx with custom applications Created API-driven automation workflows using webhooks 🎯 Let’s Work Together If you need help with: Setting up or fixing your 3CX / Yeastar PBX Building a custom dialer or VoIP system Integrating APIs or CRM systems Developing a scalable web application 👉 Send me a message — I’ll provide a clear solution quickly.

• Software development in C# (.NET Framework, .NET Core, and .NET) with more than 11 years of experience. • Desktop application development in C#, primarily using WPF and WinDev. • Mobile application development using Flutter and Dart with 4 years of experience. • General knowledge of ASP.NET, Blazor, JavaScript, TypeScript, React, jQuery, Python, PHP and PowerShell scripting. • Advanced WPF application development using the MVVM architecture, including advanced Data Binding, creation of complex User Controls, control styling and templating, Dependency Properties, Attached Properties, and the use of components and frameworks such as DevExpress, Prism, Handy Controls, and ModernWPF. Experienced in debugging and visual inspection using Snoop. • Knowledge in Radzen Blazor and MudBlazor frameworks for web applications. • SQL databases: SQL Server, SQLite, PostgreSQL, and MySQL, with 11+ years of experience: Database design and implementation; Performance optimization through indexing and normalization; Stored Procedure design and development; Integration using Entity Framework 6 and Entity Framework Core. • REST API integration, including OpenAI API, Spotify Web API, College Scorecard API, DomainBox API, InternetBs API, Dreamscape Reseller API, and Hexonet API. Also experienced in maintenance, troubleshooting, and enhancements of ASP.NET Web APIs. • Use of AI-assisted development tools to accelerate coding tasks and solve unfamiliar technical challenges, including GitHub Copilot, Codex, ChatGPT, and Gemini. • Advanced querying using LINQ and Lambda Expressions. • Asynchronous programming (async/await), background threading and use of Cancellation Tokens. • Source code management and version control using Git, GitHub, and Azure DevOps. • Implementation of authentication and authorization integrations with BambooHR (Auth0-based). • Processing, serialization, and deserialization of JSON, XML, and CSV data. • Excel (.xlsx) file generation and manipulation using ClosedXML. • Development of Google Chrome extensions using JavaScript. • Implementation of data encryption mechanisms for files and text. • Integration with Active Directory and Azure Active Directory through .NET libraries. • Task automation using Windows Task Scheduler and .NET libraries. • Experience with POS systems and peripheral device integrations with serial port communication (COM). • Previous experience with C++ and the Qt Framework, as well as basic Linux administration and Linux command-line usage. • Use of Adobe Photoshop to assist in application design tasks, including logos, UI mockups, and layout designs. About me: Software developer with over 11 years of experience designing and developing software across multiple programming languages, primarily .NET C#. Experienced in SQL database implementation, software debugging, troubleshooting, quality assurance testing, and technical documentation. Strong analytical and problem-solving skills for identifying and solving complex problems through efficient technological solutions. Committed and passionate about continuous learning, research, and process improvement, with the ability to quickly adapt to new technologies and work environments. Note: Not all projects are in my Portfolio. I mostly worked on private projects so is hard for me to show everything on what I've worked