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Many products fail not because of bad execution, but because the underlying system was never clearly defined. I work at the stage where ideas must become living, structured systems. With 20+ years in software development, I design business and product systems that can actually function, scale, and hold real operational load. 💡 What I do Having grown from a software developer to a System Architect and Product Manager, I naturally see what others often miss: the gap between a "cool idea" and a working business process. I turn vague visions, disconnected workflows, and implicit assumptions into: ✔ clear system structures ✔ defined business logic ✔ executable product architecture This is not just an analysis.
 This is the system definition. 🚀 Where I create the most value ✔ When a startup idea needs structured validation ✔ When a product concept exists, but cannot yet be built reliably ✔ When workflows between operations, product, and finance don’t align ✔ When development is at risk of building on unvalidated assumptions ✔ When the system needs to handle real-world complexity, not just a “happy path” 🔍 My approach I start by reconstructing the real operating model behind the idea. Then I define: ✔ what events must exist in the system ✔ how data flows between them ✔ how business logic translates into system behavior ✔ where inconsistencies or risks will break the system The goal is not documentation. The goal is a system that can be implemented without collapsing under real-world conditions. 📊 Typical outcome ✔ A clear system architecture (not just descriptions) ✔ Defined business logic and workflows ✔ Eliminated ambiguity for development ✔ Identified structural risks before they become expensive mistakes ✔ A system definition that can be directly implemented 🎯 Core expertise ✔ Product & System Architecture ✔ ERP / CRM / Operational Systems ✔ Multi-sided Platforms ✔ Business Process Design ✔ Data-driven Systems (SQL-based environments) 💼 Selected projects 1. Enterprise Systems:
 ✔ Trade warehouse management systems (multiple enterprise implementations).
 ✔ Healthcare management software (health resort management).
 ✔ Blood transfusion station management system. 2. Startup / Platform ✔ Multi-sided wedding & event planning platform connecting couples, venues, vendors, and travel agencies. 3. Mobile Product ✔ Feature development for a wellness mobile app (Challenges, Statistics module). ⭐ What makes me different I don’t just analyze ideas. I define the structure that allows them to work in reality. 🌿 Professional values: - Respectful and collaborative communication - Stress-Free Environment

⭐⭐⭐⭐⭐ Top Rated Plus on Upwork 100% Job Success Score I'm a Java developer with 8+ years delivering production-grade systems from serverless AWS architectures to distributed microservices serving healthcare and fintech clients. 𝗪𝗵𝗮𝘁 𝗜'𝘃𝗲 𝗕𝘂𝗶𝗹𝘁 ➡ As lead Java developer at my current company, managed a team of 8 engineers over 7 years — delivering 4 production systems across healthcare, fintech, and AI verticals. ➡ Designed serverless AWS infrastructure for a US longevity and healthcare platform as an AWS developer — Lambda, AppSync, DynamoDB, Cognito, SNS/SQS, Stripe, HubSpot currently in production. ➡ Led migration from monolithic Spring apps to distributed microservices — reducing deployment complexity and enabling independent scaling per service. ➡ Built a PDF/UA accessibility compliance platform as backend developer using Java 21, iText 7, PDFBox, veraPDF processing and remediating documents of hundreds of pages against international accessibility standards. ➡ Delivered an AI-powered workflow automation platform as an AI developer integrating Spring AI, Azure cloud, and automated Stripe subscription workflows. ➡ Shipped a medical practitioner dashboard integrating 3rd-party hardware APIs and clinical toolkits as backend developer and tech lead serving real patients and practitioners in production. Core experience as a Java developer and Backend developer As a Java developer with 8+ years in production systems, my core is Java 8 through Java 21 with the full Spring ecosystem Boot, Cloud, Security, WebFlux, Batch, and Spring AI for AI-integrated backends. I work across both relational (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB, Redis) databases, selecting the right store based on access patterns not habit. As a backend developer I've optimised slow MongoDB queries to cut response times, redesigned DynamoDB access patterns for a high-throughput healthcare API, and built Redis caching layers that kept latency flat under load. As an AWS developer, my hands-on stack covers Lambda, AppSync, DynamoDB, Cognito, SQS, SNS, SES, S3, API Gateway, Route 53, and CloudFormation built and maintained in a live US healthcare platform. I design serverless pipelines end-to-end, not just deploy to them. For async workloads I wire event-driven systems using Kafka, RabbitMQ, or AWS SNS/SQS depending on durability and throughput requirements. On the container side: Docker, Kubernetes, Helm, OpenShift, Terraform, and Jenkins full IaC from infrastructure definition to CI/CD pipeline. As an AI developer, I've shipped Spring AI integrations for workflow automation backends, built document intelligence services capable of processing and remediating hundreds-of-pages PDFs against accessibility standards, and connected GraphQL APIs via AWS AppSync for mobile and web AI-driven applications. I also have production experience integrating medical hardware APIs, Stripe subscription billing, and HubSpot CRM sync into Java backends the kind of third-party integration work every backend developer eventually owns in a real product. AWS Developer & 𝗖𝗹𝗼𝘂𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 ✅ Currently operating as AWS developer on a live healthcare platform Lambda, AppSync, DynamoDB, Cognito, SQS/SNS/SES, S3, API Gateway, Route 53, CloudFormation ✅ Experience as AWS developer across serverless, containerized (ECS/K8s), and IaC (Terraform, CloudFormation) environments ✅ Also experienced across Azure (AKS, Azure DevOps) and GCP as multi-cloud backend developer ✅ Kubernetes, Helm, Docker, OpenShift, Jenkins, Terraform the full DevOps chain every AWS developer deploys through AI developer 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀 ✅ Delivered AI-powered backend services as AI developer using Spring AI automated content generation and workflow orchestration at scale ✅ AWS AppSync + DynamoDB + Cognito pipeline for a live healthcare platform: the architecture an AI developer builds when latency and data integrity are non-negotiable ✅ Experienced AI developer integrating third-party AI tooling with enterprise Java backends designing event-driven pipelines that handle async AI workloads via Kafka and SQS ✅ As AI developer, built document intelligence features automated PDF tagging, structure remediation, and accessibility validation across large document corpora 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 Healthcare · Fintech · SaaS · E-commerce · Logistics · Telecom · IoT · Blockchain · Automotive · Media 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻𝘀 & 𝗥𝗼𝗹𝗲𝘀 ✔ Senior Java Developer · Java Spring Boot Developer · Java Backend Developer ✔ AWS Cloud Engineer · AWS DevOps Engineer ✔ Azure Cloud Engineer · Google Cloud Engineer ✔ AI Backend Developer · Full-Stack Developer (Spring Boot + React) ✔ AI Backend Developer · Full-Stack Developer (Spring Boot + React) Need a Java developer, backend developer, AWS developer, or AI developer who ships production systems — not prototypes? Drop me a message. 04/06/2026

🚀 Senior .NET Developer | Acumatica ERP | React | Azure | AI Solutions I help businesses build, modernize, and scale enterprise applications, ERP systems, CRM platforms, SaaS products, and cloud solutions. With 11+ years of commercial software development experience, I have successfully delivered enterprise-grade applications from concept and architecture through deployment and long-term support. My expertise includes backend, frontend, cloud infrastructure, ERP customization, Microsoft 365 integrations, and AI-powered business solutions. Core Technologies ✔ C# ✔ .NET Framework ✔ .NET Core ✔ .NET 8 ✔ ASP.NET MVC ✔ ASP.NET Core ✔ REST API Development ✔ Entity Framework ✔ Entity Framework Core ✔ SQL Server ✔ Azure ✔ Azure DevOps ✔ Docker ✔ Microservices Frontend Development ✔ React ✔ TypeScript ✔ JavaScript ✔ DevExpress ✔ Infragistics ✔ HTML5 ✔ CSS3 ✔ Responsive UI Development Desktop Development ✔ WinForms ✔ WPF ✔ Enterprise Desktop Applications ✔ Legacy Application Modernization Acumatica ERP Expertise ✔ Acumatica ERP Customization ✔ Workflow Automation ✔ Business Events ✔ Generic Inquiries ✔ Custom DAC Development ✔ ERP Integrations ✔ Business Process Optimization Microsoft 365 & Office Development ✔ Excel Add-ins ✔ Outlook Add-ins ✔ Word Add-ins ✔ Office JavaScript API ✔ Microsoft Graph API ✔ Office 365 Integrations AI & Modern Development ✔ OpenAI API ✔ ChatGPT Integrations ✔ Claude AI ✔ GitHub Copilot ✔ OpenAI Codex ✔ Cursor AI ✔ AI Workflow Automation ✔ AI-powered Business Applications ✔ Document Processing Solutions Recent Project Experience • Enterprise CRM Systems • Acumatica ERP Customization • SaaS Platforms • Enterprise Dashboards • Legacy System Modernization • Cloud Migration Projects • Office 365 Add-ins • AI-powered Business Solutions • Database Optimization Projects • Enterprise Workflow Automation Why clients work with me: ✅ Clean and maintainable code ✅ Strong architecture and design skills ✅ Fast problem solving ✅ Excellent communication ✅ Reliable delivery ✅ Full project ownership ✅ Long-term partnership mindset Whether you need ERP customization, a modern SaaS platform, enterprise software development, AI integration, Office Add-ins, cloud migration, or modernization of an existing system, I can help deliver reliable and scalable solutions that create real business value.

🌟I’m a Full Stack Developer, .NET developer, .NET Core developer, ASP.NET developer, ASP.NET Core developer, C# developer, and C# .NET developer with 8+ years of experience in full stack development, .NET full stack engineering, backend development, frontend development, and custom software development. I build reliable web applications, enterprise systems, SaaS platforms, APIs, and business software that are designed to scale, perform, and stay maintainable over time. My focus is not only on writing code, but on building systems that are stable, clean, and ready for real-world use. As a Full Stack developer and .NET developer, I work across .NET, .NET Core, ASP.NET, ASP.NET MVC, ASP.NET Core, and C# to build production-ready systems with solid backend architecture and modern frontend interfaces. I regularly handle ASP.NET developer work, ASP.NET Core developer projects, ASP.NET MVC applications, .NET Core developer tasks, and C# developer builds where stability, structure, and clean code matter from day one. That includes everything from application design and business logic to integration, testing, and deployment support. A big part of my work as a full stack developer react and React developer involves connecting frontend and backend layers into one smooth product. I build React frontends, support Angular applications, and deliver Angular C# solutions where UI and backend logic need to stay tightly aligned. When clients need a full-stack developer who can own both sides of the application, I step in as the full stack developer who can manage the frontend, backend, and APIs together without splitting the job across multiple people. I also work on C# WPF desktop applications, .NET Core backend systems, API integration, third-party services, authentication, permissions, database design, and application modernization. My experience includes full stack development for SaaS platforms, internal tools, customer portals, enterprise dashboards, and workflow-heavy business systems. Whether the project is a new MVP, a platform rebuild, or a legacy upgrade, I focus on clean architecture, maintainability, and long-term support. I’m especially comfortable with projects that need both speed and depth. Some clients need a .NET developer to fix a specific issue or add a feature. Others need a full stack developer who can take ownership of the entire product layer, including backend services, frontend implementation, and API-driven workflows. In both cases, I bring a practical approach that keeps the codebase manageable and the delivery consistent. 💡 What I specialize in - Full stack development for web applications, SaaS platforms, portals, and business systems. - Full stack developer and full-stack developer work across frontend and backend layers. - .NET developer and .NET Core developer work for scalable backend systems. - ASP.NET developer, ASP.NET Core developer, ASP.NET MVC, and ASP.NET Core application development. - C# developer work using C#, C# .NET, and .NET backend architecture. - Full stack developer react work with React frontends and .NET backends. - React development for modern responsive user interfaces. - Angular development for structured frontend applications. - Angular C# applications with clean frontend-backend integration. - C# WPF desktop applications for internal tools and enterprise workflows. - .NET full stack engineering for data-driven systems and business logic. - API integration, external services, and data flow automation. - MVP development, feature expansion, and product scaling. - Legacy modernization, refactoring, and performance optimization. In my day-to-day work as a Full Stack Developer, I design systems that support real business goals, not just polished screens. That means secure authentication, permissions, APIs, background jobs, database structure, and application logic that can handle growth. As a .NET full stack engineer, I also focus on clean code, maintainability, and practical architecture so teams can keep moving without creating unnecessary technical debt. I care about how software behaves after launch, not just how it looks during development. My core stack includes .NET, .NET Core, ASP.NET, ASP.NET MVC, ASP.NET Core, C#, C# .NET, React, Angular, SQL databases, REST APIs, and modern deployment practices. I’m comfortable working as a full stack developer, .NET developer, ASP.NET developer, ASP.NET Core developer, C# developer, or full-stack developer on both greenfield products and existing systems that need improvement. I can also step into legacy codebases, clean up technical debt, and rebuild critical parts without disrupting the rest of the product. 🌟 Clients usually choose me when they need a full-stack developer who can move fast, stay organized, and build software that holds up over time. If you need a .NET Core developer, ASP.NET Core developer, C# developer, React developer, or Angular developer, let’s talk about your project. Message me!

I help businesses build scalable software platforms that ship reliably — without brittle integrations and architecture debt. Over the past 15+ years, I’ve designed and delivered full‑cycle software: solution architecture, Python backends (FastAPI/Django), modern web frontends (React/TypeScript), and cloud deployments for products that need to run securely in production. I focus on systems that stay maintainable as requirements evolve: clear system design, API‑first integration patterns, performance and observability baselines, and delivery practices that keep releases predictable. 💡 How I approach projects – Architecture-first: Software Architecture and System Design for scalability, modularity, and long-term maintainability from day one – Integrations built in: API contracts, versioning, and reliable third‑party integrations (payments, CRMs/ERPs, external services) – Full-stack delivery: frontend, backend, APIs, data workflows, cloud infrastructure, and DevOps – Production-grade DevOps: CI/CD pipelines, Docker, Kubernetes, AWS/Azure deployments, monitoring, and performance tuning – End-to-end ownership: from discovery and technical planning through launch, iteration, and ongoing support ✅ I’m a good fit if you need to: 🔹 Design or refactor software architecture for a complex product 🔹 Build a Python backend with clean REST/GraphQL APIs 🔹 Deliver a full‑stack web application with React/TypeScript and reliable integrations 🔹 Modernize a legacy system without breaking production 🔹 Improve reliability: security, performance, observability, and CI/CD maturity 🏗️ What I know deeply – Software Architecture, Solution Architecture, System Design – Backend engineering in Python (FastAPI, Django) and API development – Full‑stack web delivery (React, TypeScript) with integration-first thinking – Scalability, security, and reliability for production systems – Cloud modernization and operational readiness ⚙️ Technical toolkit – Architecture & leadership: Software Architecture, Solution Architecture, System Design, Technical Leadership – APIs & integrations: API Development, REST, GraphQL, third‑party integrations – Backend: Python, FastAPI, Django, Flask – Frontend: React, TypeScript – Data & storage: PostgreSQL (plus other SQL/NoSQL when required) – Cloud & DevOps: AWS, Azure, Docker, Kubernetes, CI/CD – Security & privacy: secure-by-design practices; compliance-aware delivery (HIPAA-aligned environments when relevant) 🔒 Also worked extensively on – Integration-heavy enterprise systems and internal platforms – Data workflows and event-driven processing (queues/streams when applicable) – Regulated and privacy‑sensitive products as a secondary domain (healthcare, telemedicine, interoperability requirements) If you need a senior architect who can design and deliver a scalable product foundation — let’s discuss your scope and constraints.

With over 15 years of web development experience, I have strong expertise in the development of online marketplaces and E-Commerce applications. Aside of the fully custom implementations I have worked with the following multivendor platforms : • Sharetribe Go • Sharetribe Flex ( vetted partner of Sharetribe ) • WordPress + WooCommerce • CS-Cart Multivendor • Medusa js • Mailchimp Open Commerce ( formerly - Reaction Commerce ) Payment gateways experience : • Stripe • Paypal • Adyen • Mangopay • Paystack Programming languages and frameworks: • Ruby ( Ruby on Rails ) • JavaScript ( Node js, React js, Vue js ) • PHP ( WordPress ) Databases: • MySQL ( former employee of MySQL AB ) • PostgreSQL • Oracle I have the real life experience and necessary personal skills to succeed in a competitive environment and to sell high value solutions in a consultative manner. It allows me to propose our solutions: ✔️ Rapid MVP development from scratch in tight deadline and shoestring budget ✔️ Open source cost-efficient custom Marketplace tailored to your needs ✔️Project, Service, Booking or hybrid type marketplace development I know the pitfalls and difficulties awaiting and know how to avoid them to skyrocket your project, test the market, gain feedback and find investors (in case you are looking for them).