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I help healthcare organizations, startups, providers, and technology companies design, integrate, modernize, and build secure healthcare applications and platforms. My strength is combining healthcare domain expertise with hands-on solution architecture and full-stack engineering—from understanding clinical and business workflows to designing scalable architectures, integrating EHR/EMR systems, implementing AI, developing APIs, and deploying production-ready cloud solutions. I have successfully built simple MVPs to complex enterprise platforms across industries such as Healthcare, FinTech, Logistics, Marketplaces, and Social Platforms. ✅ Healthcare expert ✅ HIPAA compliance custom EMR/EHR development ✅ Interoperability - FHIR/HL7 ✅ PACS/DICOM ✅ LIMS ✅ Health Insurance & Claim Management ✅ HIPAA/GDPR ✅ Ready to start immediately! ✅ High Quality and strong Skills. Domain Expertise: Healthcare- HIPAA, HIX, EMR-EHR, PMS, FHIR, HEDIS, CCDA, EDI, ICD-10/11, CPT, SNOMED, Meaningful use (MU) 1,2,3, Compliance, HL7, Telehealth, Telemedicine, Homecare, m-Health, Medication/Care Management, Wearable integration, Medical Billing, Clinical Analytics, Insurance, Preventive, Wellness, Health risk assessment Experienced in integration of multiple EHR’s to the healthcare applications like GE Centricity, Allscripts, EPIC, iKnowMed, Cerner, Athena marketplace, eClinicalWorks, NextGen, Greenway etc. I have proficiency in the full life cycle of solution development (end to end) business requirements, functional and technical specifications, data modelling transactional and dimensional data, ETL, data analysis solutions, dashboards, scorecards, and reports. Using tools like Info Sphere Data Architect, Cognos Business Intelligence, IBM Cognos Report Studio, IBM Cognos Framework Manager. With a special focus on the US Healthcare Industry, I do provide wide range of services in the industry that can be summarized as follows: -- RCM -- Electronic Medical Record (EMR) Development -- Electronic Health Record (EHR) System Development -- Billing System, DICOM Viewer -- Healthcare Interoperability, -- HIPAA Consultancy, -- Meaningful use (MU) Certification, -- HL7 Messaging, -- CCDA, FHIR, HEDIS -- Telemedicine Our offerings ---------------- -HIT Software Development Service -LIMS for comprehensive lab workflow management -HIPAA Consultancy and HEDIS measures implementation. -Healthcare Interoperability Modules & HL7 Messaging (ADT, ORU, ORM, etc.) -EMR/EHR Systems -Certifications and Compliance (MU Certification) -Seamless Integration with Radiology, Laboratory, and Pharmacy Systems -Billing Management and EDI Processing Systems (EDI 837, 835, 270, 271, 276, 277, 999 etc.) -Medical Coding Database Management (ICD9, ICD10, SNOMED, RxNorms, NDC, LOINC, CPT, HCPCS, E/M, PQRS) -DICOM Viewer & PACS Solutions -Provider Networking & Credentialing -Tele-Health, Tele-Medicine, Remote monitoring -Mobile applications and device Integration In sync with the latest standards and technologies in the Industry, you can expect the excellence in all the aspect of IT Services & Solutions, be it Security (from HIPAA point of View), Turn Around Time (for innovative products), Cost-Effective, Industry-oriented, and User-Friendly.

Need one developer who can take your whole product off your hands, from the database to the desktop UI to the game? That's what I do. I'm Aleksandr, a C#/.NET developer with 2 years of experience and 20+ delivered projects. I work across the entire .NET ecosystem: 🖥 Desktop (Windows): WPF, WinForms, Avalonia, MAUI. Complex UIs, MVVM, DevExpress/Telerik, hardware & legacy-system integration, migration of old apps to modern .NET. 🌐 Backend: ASP.NET Core (Web API, gRPC, SignalR), Entity Framework Core, microservices, SQL Server/PostgreSQL, Redis, Docker, Azure/AWS. 💻 Web frontend: Blazor (Server & WebAssembly), plus TypeScript/React when the project calls for it. 🎮 Unity: gameplay programming, tools & editor extensions, mobile and PC titles, AR/VR prototypes. Why clients hire me and come back: • I write maintainable code: clean architecture, unit tests, documentation. Your next developer will thank you. • I communicate like a partner, not a contractor: daily updates, honest estimates, and I'll point out a cheaper solution when one exists. • I own problems end to end. "It works on my machine" is not something you'll ever hear from me. Whether you need to fix a stubborn bug, rescue a project that's behind schedule, or build something new from scratch, send me a message. I reply within a few hours, and you'll get an honest assessment of your task even if we don't end up working together.

𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐚 𝐌𝐮𝐥𝐭𝐢-𝐓𝐞𝐧𝐚𝐧𝐭 𝐒𝐚𝐚𝐒, 𝐄𝐑𝐏, 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞, 𝐁𝐨𝐨𝐤𝐢𝐧𝐠, 𝐏𝐚𝐲𝐦𝐞𝐧𝐭, 𝐨𝐫 𝐀𝐈 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦s? I am a senior .NET SaaS Architect/Developer with 16+ years of experience building production-ready SaaS and enterprise applications using .NET, .NET Core, ASP.NET Zero, ABP io, Angular, Azure, and OpenAI. I specialize in multi-tenant SaaS architecture, ASP.NET Zero/ABP development, HIPAA/GDPR-compliant healthcare platforms, legacy .NET modernization, and AI integration. Over the past 16+ years, I’ve architected and developed systems across healthcare, fintech, and enterprise B2B SaaS including a multi-tenant platform that powers a business generating $20M+ in annual revenue. 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 𝗬𝗢𝗨 𝗪𝗜𝗧𝗛 • 𝗠𝘂𝗹𝘁𝗶-𝗧𝗲𝗻𝗮𝗻𝘁 𝗦𝗮𝗮𝗦 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 Design and development of scalable multi-tenant SaaS platforms using .NET, ASP.NET Core, ABPio, and ASP.NET Zero including tenant isolation, subscription billing, licensing, permissions, background jobs, and modular APIs. • 𝗔𝗦𝗣.𝗡𝗘𝗧 𝗭𝗲𝗿𝗼 & 𝗔𝗕𝗣𝗶𝗼 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Extensive experience building, upgrading, customizing, and modernizing ASP.NET Zero, ASP.NET Boilerplate, and ABPio applications. I can help with architecture, module development, version upgrades, Angular integration, performance optimization, and migration to modern .NET. • 𝗛𝗜𝗣𝗔𝗔 / 𝗚𝗗𝗣𝗥 & 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗦𝗮𝗮𝗦 Architecture and development of healthcare and regulated SaaS platforms with data encryption, tenant isolation, role-based access control (RBAC), audit logging, secure cloud infrastructure, and privacy-focused application design. • 𝗔𝗜 & 𝗢𝗽𝗲𝗻𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 Integration of OpenAI and Azure OpenAI into existing .NET/SaaS applications. Experience includes AI assistants, RAG workflows, document processing, healthcare AI workflows, AI agents, and secure enterprise AI integrations. • 𝗟𝗲𝗴𝗮𝗰𝘆 .𝗡𝗘𝗧 𝗠𝗼𝗱𝗲𝗿𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻 Modernization of legacy .NET Framework and monolithic applications to modern .NET, Angular, modular architectures, APIs, containers, and Microsoft Azure with an emphasis on minimizing business disruption. 𝗖𝗢𝗥𝗘 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗜𝗘𝗦 • .NET / C# / ASP.NET Core / Entity Framework Core • ASP.NET Zero / ABPio / ASP.NET Boilerplate • Multi-Tenant SaaS / SaaS Architecture / REST APIs • Angular / TypeScript • Microsoft Azure / Azure App Service / Azure Functions / Azure SQL • Azure DevOps / CI/CD / Docker • SQL Server / PostgreSQL / Redis • OpenAI API / Azure OpenAI / RAG / AI Agents • HIPAA / GDPR / Healthcare SaaS • SSRS / BoldReports 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘 • 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀: Proven track record delivering large and long-term Upwork engagements. • 𝟭𝟲+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: Senior-level architecture and hands-on development, from product design through production deployment. • 𝗗𝗶𝗿𝗲𝗰𝘁 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: You work directly with me on architecture, technical decisions, development, and delivery. • 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗚𝗿𝗮𝗱𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴: Clean, maintainable architecture designed for security, scalability, performance, and long-term development. • 𝗖𝗹𝗲𝗮𝗿 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Regular progress updates, early risk identification, and practical technical recommendations. If you’re building a new SaaS product, modernizing an existing .NET/ASP.NET Zero application, developing a HIPAA/GDPR-focused healthcare platform, or integrating OpenAI into an existing system. Message me with your current stack and biggest bottleneck. I'll tell you in the first reply whether ASP.NET Zero upgrade or a rebuild makes sense. I’ll suggest the best way to approach it.

I am a Full Stack Developer with experience building enterprise applications, business systems, web platforms, and APIs using C#, .NET, DevExpress XAF, React, Next.js, JavaScript, TypeScript, PHP, and FastAPI. I specialize in developing end-to-end solutions - from database architecture and backend APIs to modern front-end applications and cloud deployments. My experience includes creating CRM systems, rental management platforms, membership systems, business automation tools, and custom enterprise applications. _________________________ Technical Expertise Backend: C#, .NET Framework, .NET Core, ASP.NET Core, REST API Development, FastAPI (Python), PHP, Authentication & Authorization, Background Services, Workflow Automation. Frontend: React.js, Next.js, JavaScript, TypeScript, HTML5, CSS3, Responsive UI Development. Enterprise Development: DevExpress XAF (eXpressApp Framework), DevExpress WinForms, DevExpress Blazor, Business Process Automation, ERP Development, CRM Development, Administrative Portals, Internal Business Systems. Database & Cloud: SQL Server, MySQL, Database Design, Query Optimization, Azure App Services, Azure Key Vault, CI/CD Pipelines, Cloud Deployment. Additional Skills: Technical SEO, Novu Workflow Automation, Git, Source Control, Performance Optimization, System Integration, Troubleshooting, Debugging.