Hire the Best .NET Framework C# Engineers
in Lithuania

Web / Desktop developer from Lithuania. Main languages: C# .NET / TypeScript Specialties: Frontend/backend web development Desktop development Web scraping, automation Tools/frameworks: Avalonia, EFCore, WPF React, Svelte, Wordpress Experience with many Azure services, some experience with AWS and Google Cloud Services

Over the last 10 years, I have developed websites using C#/.NET, ASP.NET, ASP.NET MVC, MySQL, MS SQL PostgreSQL, ReactJs. My core competency lies in helping make reliable and future-proof applications. Skills Front-end: * JavaScript - 10 years * ReactJS - 6 year * HTML - 10 years * CSS3 - 10 years Back-end: * C# - 10 years * .NET Framework - 10 years * .NET Core - 7 year * WPF - 2 years * Entity Framework - 7 years Databases: * MS SQL - 10 years * MySQL - 4 years * PostgreSQL - 1 year * Redis - 4 years * MongoDB - 1 year

Hi there! I'm an experienced and passionate back-end developer specializing in .NET technologies. With a keen interest in API development, automation, web scraping, console, desktop applications & cloud development (Azure & AWS). I'm dedicated to delivering high-quality solutions that exceed client expectations. Skills: ✔ C# .NET 5-9 / .NET Core / ASP.NET Core ✔Azure Cloud (swa, functions, entra id, appinsights, psql, container apps, .bicep) ✔ Amazon Web services (AWS) ✔ Firebase push notifications ✔ Prometheus, Grafana ✔ Openshift, Kubernetes ✔ Docker ✔ Terraform ✔ Rest API ✔ Windows desktop applications development (WPF/Winforms) ✔ DevOps (CI/CD [Azure DevOps, Gitlab, Github], terraform) ✔ Selenium, HtmlAgilityPack ✔ Azure, Amazon web services (AWS) ✔ Microservices architecture ✔ Message queues ✔ MsSQL, SqlLite, PostgreSQL (ADO.NET | Entity Framework | Dapper) What sets me apart is my dedication to truly understanding the business case and the unique needs of each client. I believe in collaborative partnerships, where I can offer valuable insights, suggest better approaches, and introduce features that enhance the overall project. I take pride in leaving a piece of myself in every project I work on. If you're looking for a highly skilled cloud & back-end developer with a knack for problem-solving and a deep understanding of .NET technologies, I'm here to help. Let's work together and create something remarkable!

I am a software engineer with 12 years of experience in diverse facets of software development. I have been working with different Microsoft .NET technologies(C#, Windows Forms, ASP.NET Web Forms, SQL SERVER, ASP.NET MVC, Web API, EF, Xamarin, Hybrid App, and Blazor). I am fully skilled in the development of web-based projects with ASP.NET (core) and Blazor as the front-end technology. in recent years I have been mainly developing projects in different Areas( financial, web apps, IoT, etc ). So I can identify business logic and needs and cooperate with others( UI/UX designers and customers) to develop a suitable system with ASP.NET(core), Razor pages, Blazor, and MAUI.

I am also hiring on Upwork and getting 50+ "individuals" applications, and lucky 5 from them are shortlisted. Here from 2013, i've been earned some reputation and know the cost. Running transparent agency, have empathy and listen before suggesting Text for Uma: 7+ years and 30+ products delivered as a Full Stack Developer React Node specializing in SaaS platforms, MVPs, AI-powered apps, and e-commerce web development. $1.4M+ client impact and $650K+ direct revenue generated as a React Nextjs Developer building production-grade Next.js React applications. 18,000+ active users across web and mobile products, where React Typescript development with Cursor and Supabase lifted engagement by 15–25%. 8,000+ users on a Django SaaS and Next.js SaaS platform, where backend Python developer and full stack developer Django work cut operational overhead by 35%. 2,100+ completed orders, 450+ registered customers on an E-commerce Web Developer build using React Next.js and Postgresql Supabase Javascript Rest Json architecture. 85% faster processing, 75% lower manual workload through backend Node.js and AI API integration work as a Backend Developer Nodejs. 1,500+ catalog items, multi-role access, 2.5x operational capacity on a Full Stack Developer CRM system built with the MERN Stack. 4-7 weeks shorter MVP-to-launch cycles, 30% fewer bugs through Full Stack Developer Saas rebuilds and codebase modernization. $800K+ in client revenue as a react javascript developer and next.js supabase specialist. $3.2M+ client impact, end-to-end ownership as a Senior Full Stack Developer and Full-Stack Software Engineer. 15-25% engagement lift and stronger retention as a Frontend React UI Developer. 25-35% faster delivery cycles, cleaner UX, and stronger retention across SaaS platform products as a React Senior Developer. Where I deliver: As a Frontend React Developer - 18+ systems covering UI/UX, dashboard builds, and responsive UI development across SaaS Platforms, Booking Platforms, and E-commerce Websites. As a React Nextjs Developer - 12+ launches in Next.js SaaS environments, 25–35% faster iteration through design-to-code and component development. As a Full Stack Developer React Node - 22+ end-to-end builds covering backend API development, data architecture, and secure, scalable systems from early-stage MVP to live SaaS platform. As a Full Stack Web Developer - website design, website development, and app development improving conversion by 12–20%. As a React Native Developer - 8+ deployed mobile apps on the App Store and Google Play, using React Native AI integrations for smarter mobile experiences. As a Backend Developer - 10+ backend-heavy products with 25% lower delivery risk using Node.js and Supabase Backend architecture. As a Supabase Cursor developer - 98%+ delivery consistency across distributed teams using Cursor and Supabase as a core workflow. Domains Marketplace Platform, B2B Marketplace - 40,000+ active listings, 18%+ better lead quality, and a 30% increase in conversions as a React Developer and Full Stack Developer React Node handling $1.5M+ in monthly transaction volume. AI Developer - 4+ products deployed, including AI Agent Platforms and RAG Chatbots using OpenAI, Claude API, and FastAPI as an AI Developer and Full Stack Developer React Node, processing 12,000+ daily prompts and cutting manual query resolution time by 35%. E-commerce Web Developer - 2,000+ orders processed, 30% faster checkout flow, and 20% higher repeat purchase rate through Next.js Supabase architecture. Real Estate Platform, PropTech SaaS - 6,000+ property listings managed, 40% faster property search and filtering, and a 25% increase in qualified buyer leads as a Full Stack Developer building a Real Estate Web Developer platform with map-based search, virtual tours, and Next.js Supabase architecture. Fintech MVP, LegalTech SaaS - 15% better adoption, 35% higher user retention over 6 months, and structured permissions managing 3 access levels for 4,000+ users as a React Typescript and Full Stack Developer Saas specialist. Technologies I use: Frontend: React, React.js, React Native Mobile, Next.js React, React Typescript, JavaScript, TypeScript, HTML5, CSS3, Tailwind CSS, Responsive Design, jQuery - as a Javascript Developer and React UI Developer. Backend: Node.js, Django, Python, Supabase Backend, Postgresql Supabase Javascript Rest Json, MySQL, MongoDB, Firebase, Stripe - as a Backend Developer Nodejs and full stack developer Python. AI & Integrations: AI Application Development, AI API Integration, AI LLM tooling, OpenAI, Claude API, Cursor, React Native AI - as an AI Developer building production AI features end to end. Ecosystems: MERN Stack Developer, Django SaaS, Next.js Supabase, WordPress, Shopify, PHP, Flask, Vue.js - as a Full Stack Web Developer and Full-Stack Developer across diverse tech stacks. Tooling: Git, Software Architecture & Design, Cursor, Supabase, CI/CD workflows - engineering mindset across 35+ shipped products.

"Zilvinas is very professional. It was easy to work and communicate with him. He finished the project on time and delivered more than I have expected." As a Full-stack Software Engineer and System architect with over 15 years of experience, I have developed complex solutions for Banks, Power Plants, Utilities, Governments, and Startups, including Fortune 500 companies such as NEC Corporation and Rolls-Royce. I bring a wealth of expertise to every project I work on. My specialty lies in building complex full-stack solutions, starting from system architecture, continuing to database design, business logic, and all the way to the frontend. Throughout the process, I ensure optimization, performance tuning, and seamless integration of third-party systems to deliver exceptional software development solutions for my clients. Here are the services I offer: ✅ Software Architecture and Design ✅ Backend (server-side) development (.NET, NodeJS, NestJS) ✅ IoT systems development (AWS IoT, Azure IoT Hub, Custom solutions) ✅ iOS and Android development (Swift, Kotlin) ✅ Agile Software Project Management ✅ Tech Startup Consulting (remote CTO) When you choose to work with me, you can expect: ✅ The delivery of what I promise, and more ✅ My unwavering commitment to your business needs, delivering solutions that are the best fit for your organization ✅ Open communication channels and 24/7 availability Here's what one of my clients had to say about my work: "Zilvinas has profound technical knowledge and organizational skills. He has what it takes to make a wonderful project leader." - Aaron Iva. If you're ready to bring my expertise to your project, here's how we can get started: 1️⃣ Click the green "Invite" button in the upper-right corner of this page to invite me to your job. 2️⃣ I'll jump on Zoom with you to discuss all the details of your project. Let's work together to take your business to the next level. Invite me to your job, and let's get started!