Greetings! 👋 If you are searching for an experienced Middle .Net developer, my name is Dmytro and I am at your service. 💫 6 years of hard work 💫 stable communication, regular progress reports 💫 fully project manage your brief from start to finish 💫 great team player I am an experienced .NET Developer who is passionate about creating reliable software. 🖥️ Proficient in C#, ASP.NET Core | Open-source web framework for .NET and .NET Core, and possess a strong grasp of the concepts of object-oriented programming 📊 Skilled in creating database-driven systems, and scalable online applications 📚 RESTful APIs, including Google, Facebook, Twitter, Stripe, Fetch, Axis, and more 🛠️ Skilled in debugging and troubleshooting complicated code problems 🆕 Committed to keeping up with the newest innovations and industry practices in software development 👥 Excellent communicator and team player who can work well with cross-functional teams to produce high-caliber solutions on time 💻 Blazor, Amazon AWS 🖇️ Variety technologies, such as Jira, Trello, Clickup, Git, GitHub, GitLab, Slack, Zeplin, Figma, Bitbucket, and Adobe XD If you need my help, feel free to contact me! I believe that together we can realize all kinds of your wishes! Thank you for your time! In touch 🤝 Keywords: Upwork freelancer, .Net Developer, Web Development, APIs, RESTful APIs, #C, ASP.NET Core | Open-source web framework for .NET , .NET Core, debugging, Git, GitHub, Blazor, Amazon AWS

I help startups build and launch high-performance mobile apps in 4–8 weeks using Flutter. From MVP to scalable production apps, I focus on speed, stability, and real business outcomes. I specialize in building Flutter mobile apps with scalable backend systems for startups and growing businesses. 👉 Over the past few years, I have: • Built 20+ mobile apps (iOS + Android) • Helped startups launch MVPs in under 6 weeks • Improved app performance by 30–50% • Delivered apps supporting 10K+ users 🚀 What I Can Help You With • Flutter app development (iOS + Android) • MVP development (fast launch, scalable base) • API integration & backend (Node.js / .NET) • Real-time features (chat, notifications) • Payment integration (Stripe, Razorpay) • App performance optimization 💡 Why Clients Hire Me • I focus on launching products fast, not just writing code • Clean architecture → easy to scale later • Strong communication → no confusion, no delays 🤜 Send me your idea, and I will help you turn it into a working app.

I help startups, SaaS companies, and growing businesses turn ideas into revenue-ready products using AI, web, and mobile technologies. As a Top Rated Plus Full-Stack & Mobile App Developer with 6+ years of experience, I build fast, scalable, and secure applications that solve real business problems. I specialize in AI-powered solutions that automate workflows, enhance user experience, and create measurable impact. From AI agents and smart automation to scalable SaaS platforms and mobile apps, I deliver production-ready products designed to launch quickly, scale confidently, and perform reliably. ✅ My Expertise: 🤖 AI Development & Integrations -Generative AI (text, content, and intelligent assistants) -AI agents for automation, research, customer support & sales -Chatbots for websites, SaaS platforms, and workflows -Rule-based systems evolving into AI-assisted solutions -LLM integrations and vector databases -Automation tools & workflows (n8n, APIs, webhooks) 📱 Mobile App Development (iOS & Android) -AI-integrated mobile experiences -Smart assistants & personalized content -Push notifications, offline sync, and in-app purchases 💻 Full-Stack Web Development End-to-end development across: -Frontend: React, Angular, Vue, JavaScript, TypeScript -Backend: Node.js, ASP.NET Core/MVC/Web API, C#, Python/Django -Databases: PostgreSQL, SQL Server, MySQL, MongoDB, RavenDB I build secure dashboards, SaaS platforms, admin panels, and complex web applications. 🛒 CMS & eCommerce Development -WordPress & Shopify -Custom themes & plugins -WooCommerce stores & Shopify customizations -Third-party integrations -Performance optimization & CMS migrations -Headless CMS architectures where flexibility is required 🎨 UI/UX Design for Apps & Websites -User-centered, visually appealing designs with: -Wireframing & prototyping -User flows & responsive layouts -Design systems aligned with AI features and development 🧩 Branding & Identity Design -Logo & illustration design -Stationery & pitch decks -Complete brand identity systems 🔌 API Integration & App Maintenance -AI APIs, Stripe, Firebase, Google Maps, payment gateways -Automation tools, REST APIs & webhooks -Ongoing maintenance, security updates, and scalability improvements ✅ Why Work With Me ✔ 100%+ Job Success Rate ✔ 6+ Years of Full-Stack & Mobile Development Experience ✔ End-to-End Expertise — AI + Web + Mobile ✔ Startup-Friendly, Fast & Lean Execution ✔ Clear Communication & Reliable Delivery 𝐒𝐎𝐔𝐍𝐃 𝐋𝐈𝐊𝐄 𝐀 𝐅𝐈𝐓? 𝐍𝐄𝐗𝐓 𝐒𝐓𝐄𝐏𝐒: 👉 Click the green button in the top-right corner, send me a message, and let’s get started.

I help founders and businesses build 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐡𝐞𝐚𝐝𝐥𝐞𝐬𝐬 𝐂𝐌𝐒 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐚𝐧𝐝 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐰𝐞𝐛/𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬, from frontend architecture to backend systems and integrations. 🚫 𝗜 𝗱𝗼𝗻’𝘁 𝘀𝗲𝗹𝗹 𝗵𝗼𝘂𝗿𝘀. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝘁𝗵𝗮𝘁 𝘀𝗰𝗮𝗹𝗲. 🤝 My promise: If expectations aren't met, I take full responsibility and make it right. Backed by 9,800+ hours and a Top Rated Plus track record on Upwork. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐈’𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐨𝐧 𝐢𝐧𝐜𝐥𝐮𝐝𝐞: ➔ SaaS dashboards and product platforms ➔ AI agents & LLM-powered features (chatbots, RAG, workflow automation) ➔ Headless CMS-driven enterprise websites (Storyblok, Sanity) ➔ Healthcare & MedTech applications ➔ E-commerce and marketplace systems ➔ Subscription billing & Stripe integrations ➔ Fitness and mobile/web applications Across these, I've shipped 30+ production applications serving real users at scale handling complex user flows, large-scale content, and performance-critical workloads. 𝙒𝙝𝙖𝙩 𝙔𝙤𝙪 𝘾𝙖𝙣 𝙀𝙭𝙥𝙚𝙘𝙩: ➔ Scalable frontend architecture ➔ High-performance React / Next.js applications ➔ AI integration (LLMs, AI agents, RAG pipelines) ➔ Robust backend systems (Node.js, Python, Django, .NET Core) ➔ Flexible CMS-driven systems ➔ Clean and maintainable APIs ➔ Secure, scalable databases & cloud infrastructure (AWS, Docker, CI/CD) ➔ Pixel-perfect UI with strong UX focus ➔ Fast iteration with production-ready quality ➔ End-to-end ownership ➔ Built to scale from day one 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: React • Next.js • TypeScript • Redux • React Native Node.js • Python • Django • .NET Core LLMs • OpenAI / Anthropic APIs LangChain • RAG • Vector DBs Storyblok • Sanity • Headless CMS Stripe • REST APIs • Firebase MongoDB • MySQL • SQL AWS • Docker • CI/CD 📩 Products grow. Architecture decides if they scale. Let’s build it right. #FullStackDeveloper #ReactJS #NextJS #AIAgents #LLM #AIIntegration #SaaSDevelopment #HeadlessCMS #Storyblok #SanityCMS #ProductEngineering #ScalableSystems #StripeIntegration #TypeScript

Hello! I’m a book layout designer and typesetter with 20 years of experience and over 100 completed book projects. I specialize in non-fiction formats but have designed everything from business books and textbooks to novels and memoirs. My mission is to make your book look polished and professional in both print and digital formats, so you can publish with confidence. What I Offer: Interior Layout Design (Print) – I provide up to 3 initial design concepts for your book’s interior, ensuring the style matches your content and vision. Once you pick a design, I meticulously format every chapter and page for a clean, reader-friendly result. Expert Typesetting – From straightforward text to complex layouts, I handle it all. Non-fiction is my specialty, including books with images, tables, charts, and footnotes, but I’m equally comfortable formatting fiction and other genres. Every element will be formatted consistently and accurately. ePub/eBook Conversion – I will convert your book into ePub (and MOBI/KPF if needed) with print-like fidelity. That means your eBook will retain the look and feel of the print layout as much as possible, including proper fonts, headings, and a clickable table of contents. The final ePub will be tested on various devices (Kindle, tablets, phones) to ensure smooth reading. Fast Turnaround – Need it done yesterday? I’ve got you. I can professionally format a ~50,000-word manuscript in about 3–5 days without sacrificing quality. I know the publishing industry often runs on tight deadlines, so I always deliver on time (if not ahead of time). Complex Layouts & Extras – Have a lot of figures or footnotes? Large tables or special formatting requirements? I love complex projects. I’m comfortable integrating images, tables, diagrams, footnotes/endnotes, and indices. I can also handle minor cover tweaks (e.g. adjusting spine width or updating back cover text) to make sure your cover fits the final formatted book. Revisions and Support – Your satisfaction is my priority. I include 3 major revisions with every project, and unlimited minor tweaks for up to one year after final delivery. Publish with peace of mind knowing that if you need small adjustments or updates down the road, I’ve got you covered at no extra cost. All files I deliver will be print-ready and meet the specs for Amazon KDP, IngramSpark, or other publishers/printers (CMYK PDF with proper bleed, margins, embedded fonts, etc.). I work exclusively with Adobe InDesign (plus Photoshop and Acrobat for graphics/PDF optimization) to ensure top-notch quality. No templates or AI gimmicks – just solid, professional design tailored to your book. Why Work With Me: I’m a reliable, full-time freelancer who believes in clear communication and building long-term relationships with clients. I’m straightforward and proactive – I will keep you updated throughout the process and promptly address any questions. Clients often praise my attention to detail, quick turnaround, and how easy it is to work with me. (See testimonials below!) Client Testimonials: - “He is the best! Don't waste time thinking - hire him without doubt!"” – ★★★★★ Upwork Client - “Excellent work, fast, professional and to a very high standard. Slaven is now my "go-to" for this type of work. Highly recommended for eBook work. He took my files and smoothly put them into the right format. Dealt with some outstanding typos. Good value.” – ★★★★★ Upwork Client If you’re an author or publisher looking for a seasoned professional to handle your book’s interior design and formatting, let’s talk! I take pride in helping writers bring their words to life on the page. Whether you need a print layout, an eBook conversion, or both, you can expect friendly service, fast delivery, and a final product that you’ll be proud to publish. I look forward to making your book print- and ePub-perfect!

✦ IT Consultant ✦ Product Development ✦ Software Development ✦ Full Stack Development ✦ Prompt Engineering ✦ Project Management ✦17+ Years Exp ❖ Engagement with DMRC (Feb 2021 - Present) Spearheading cutting-edge engagement strategies at DMRC, driving innovative solutions in alignment with company objectives. Collaborating seamlessly with cross-functional teams to define and execute strategies that enhance business operations and productivity. ❖ Leading UI architecture development, ensuring visually appealing and user-friendly interfaces. Collaborating closely with the DMRC team to translate business requirements into effective solutions. Leveraging expertise in ASP.NET MVC 4, jQuery, C#, HTML, CSS, and JavaScript to drive project success. ❖ Upwork Engagements (Oct 2015 - Present): Serving a diverse range of clients on Upwork, delivering top-tier solutions. Skillfully handling ASP.NET and Azure deployment projects, demonstrating proficiency in diverse technologies. ❖ Garnering stellar client feedback on Upwork, reflecting exceptional performance and dedication to meeting diverse project requirements. Demonstrating prowess as a problem solver by providing rapid and professional solutions to complex technical challenges. Earning a reputation for excellence in communication and exceeding client expectations across diverse projects and domains. ❖ JF Software (Nov 2021 - Jan 2023): Excelled in technically challenging projects, demonstrating agility in evolving requirements. Led the charge in working with advanced technologies, including GraphQL, Azure Functions, Cosmos DB, and Azure DevOps. Delivered impeccable C# code and collaborated effectively with cross-functional teams, contributing insights during stand-ups, sprint planning, and other key meetings. ❖ LetsBrief Journey (Oct 2015 - Nov 2019) Project Title: Innovative Customer Engagement Platform: Led the development of a groundbreaking customer engagement platform, spanning mobile and desktop, while designing user-friendly UI frameworks. 𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭𝐬 ASP.Net MVC, ASP.Net, C#, CSS, HTML, Ajax, Azure, React.js, JavaScript, jQuery, ChatGPT, Cognitive Search, Prompt Engineering, 𝐒𝐞𝐜𝐨𝐧𝐝𝐚𝐫𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭𝐬 SQL Server, Jenkins, Fortify (SAST), terraform, Vue.js, Rethink DB, LINQ, LINQ to SQL, Entity Framework, WCF, node.js, socket.io, ES6, CI/CD, Terraform, AWS, Infrastructure automation, DevOps, Shapespark 𝐀𝐥𝐬𝐨 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 JSON, SQL Server, Azure (Azure Web App, Azure VM, Azure Blob, Azure Notification Hub, Azure Web Jobs, Azure CDN, azure Ubuntu VM etc.), Android studio, Firebase Cloud Messaging, Web Components, notification API, Facebook Graph Api, worker role, LESS, Responsive Design, Phone gap/Cordova, Phone gap Build, Gulp, Browserify, Framework7, Raven DB, Pop3 & IMAP integration

Software architect with over 8 years of experience specializing in cloud-based backend solutions, microservices, and scalable APIs. I design and implement architectures that meet high-performance demands, optimize user experience, and enable seamless integration across systems. Cloud-Native and Microservices Architectures: Skilled in breaking down monolithic applications into microservices using .NET, Azure, Kubernetes, Docker, and gRPC, supporting millions of active users and high transaction volumes. Experienced with CI/CD pipelines in Azure DevOps, containerization with Docker, and Google Cloud services (StateStore, Cloud Storage, Pub/Sub) for reliable scalability and resilience. Enterprise Integration and Real-Time Data: Proficient in integrating complex systems using Kafka, RabbitMQ, and Redis Pub/Sub for messaging, and managing data with PostgreSQL, MongoDB, Oracle, and Redis. My solutions are built for real-time processing and optimized for high availability. Secure, High-Performing APIs: I develop APIs focused on security and performance, implementing authentication and authorization with Identity Server, Auth0, Firebase, Azure Entra External ID along with observability, health checks, and error resilience. My APIs are thoroughly documented for easy integration and long-term maintainability. Legacy Modernization and Frontend Expertise: I bring legacy systems into modern architectures, leveraging .NET Core and Angular to create efficient, maintainable applications. Additionally, I have experience building responsive interfaces with Angular, React, and Flutter. Agile and DevOps Advocate: I work in agile teams, prioritize clean code and best practices, and ensure continuous improvement through structured CI/CD, monitoring, and automated testing. Passionate about delivering high-quality, cloud-based solutions that drive business value and user satisfaction. Azure Services: DevOps, App Service Plan, App Service, Functions, Container Apps, Monitor, Application Insights, Key Vault, VNET, SubNET, NSG, Private Endpoints, Storage, SQL Server, Redis, Entra ID, AD, VMs, Container Registry, Kubernetes, APIM, Logic Apps, WebJobs, Service Bus, Cosmos DB, Development: .NET (3–9) - Framework and VB, C#, Angular, React, Minimal API, Vertical Slice Architecture.

🏆 100% JOB SUCCESS Fluent English. Over 15 years of experience in Web development. Every day online. 100% success guarantee! I will have been doing my work until you are fully satisfied and happy. That is the reason you can see long-term contracts in my profile because they love my skills and work. During my journey through the evolution of the front-end industry, I picked my "Must Have" technologies to work with: - ASP.Net CORE - JavaScript (TypeScript) - Angular, React, Vue - Node.js, REST API My experience allows me to offer a variety of services to my clients for a full-stack development process. Those include: - JS applications development - UI/UX - HTML/CSS development - Wire-framing - API integration, and many more Few Others: - Extensive experience in Architecting, Analyzing, Designing, Development, and Maintenance of Web, Windows, and Mobile applications. - Extensive programming experience in C#, ASP.NET Core, Azure, MERN, and many more - Good Experience with Third Party Components like DevExpress, Telerik Kendo, etc. - Knowledge of creating Unit Test plans(TDD) and scenarios. - Worked on projects that implemented Agile Software Methodology (Scrum), TFS, and eScrum. - Worked on projects that followed SDLC, SEI: CMMI Quality Processes. - Ability to take and give directions and instructions and provide assistance through the completion of tasks. - Strong analytical and problem-solving skills. Having an efficient workflow process gives me the opportunity to deliver high-quality products to my client with the satisfaction of both sides. Why you should hire me: 🏅 15+ YEARS OF EXPERIENCE 🎖️ 5 Stars Rating 🥇 TOP-RATED FREELANCER 🏆 100% CLIENTS WOULD RECOMMEND ME

Hello, and thanks for visiting my profile. I have 15 years of experience in software engineering, including building and bringing two healthcare SaaS products to market. With my experience, I am confident I can help you succeed with your healthcare project. Case Studies: UnaCasePro - SaaS case management system specifically designed for public health and social services. UnaCasePro solves non-compliant documentation, helps with loss prevention, and improves user productivity. Stealth Healthcare Project: Blazor web application to process scanned physician notes using Azure Document Studio (OCR) along with a custom chatbot to interact with for health-related questions. eReferraPro: eReferralPro (SaaS) was designed to bring vertical health organizations together to extend their referral network of specialists in a way that’s surprisingly easy and cost effective. Several Smart on FHIR apps with EPIC and Cerner Top Skills: • .NET 8, Web APIs, Blazor, .NET Maui, Entity Framework, Dapper • FHIR, Firely, HL7, HIPAA • C#, JavaScript, TypeScript • MS SQL Server, PostgreSQL, RavenDB, MongoDB, Redis • Azure • Azure Document Intelligence Studio • OpenAI Let's discuss your project and see how I can help you.

• Dedicated software professional with 8+ years of strong hands-on experience with software architecture, design, and development. • Proven record of accomplishments of consistently delivering products with very high complexity and tight deadlines. • Highly motivated individual with a can-do attitude, Belief in leading by example. • Played key developer role under various projects. • Passionate about learning the latest technologies, designing, and writing software. • Detail-oriented and organized professional with a creative mindset and strong project management abilities. • Capable of working both independently and as part of dynamic project teams. • Able to convey technical concepts and designs to both technical and non-technical audiences. Technologies known: ● ASP.Net (CORE/MVC/Web API/Webforms) • Windows Forms • C#, VB ● Angular JS + Angular ● Google Flutter • Dart • Firebase • Firestore ● MS SQL Server • MS Access • MySQL • RavenDB (NO-SQL) ● Entity Framework, LINQ, ADO .Net ● JavaScript/ES6+/TypeScript, React, Vue, Vuetify, Bootstrap, RxJS, GraphQL ● Node.js, Express, Socket.IO ● Python, Django, Django REST ● Sass, CSS3 ● AWS, Google App Engine ● MySQL, MongoDB, RavenDB ● OOP, SOLID Principles, Design Patterns Experience is classified as below: ✔️ Website Development ✔️ Web App Development ✔️ E-Commerce Solution Development ✔️ Plug-In & API development with integration Work with me and you will get the following things from my end: ● 100% Productivity with daily progress reports ● Dedicated & friendly team with ultra-fast response time ● Well commented enterprise-ready source code ● Tasks and the Issue Tracking system ● Excellent Service and Communications I assure you about my work and my aim is to maintain long-term relationships. Apart from all the above, my websites are SEO-friendly because they did not fail to satisfy the users. Also, I keep myself up to date with new technologies and their uses, new tools, and computer languages so that my clients can receive high-level services. I believe in hardship, and hiring me would not fail your decision. I love making new additions to my portfolio and am eagerly looking forward to an exciting journey. Thanks for being here and reviewing my profile. Thanks :)