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Petro K.
$35/hr
100% Job Success
$600K+ earned
Offers consultations
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I'm a skilled developer with 10+ years of experience in the software industry, especially within Microsoft, cloud & mobile app solutions. Tell me your needs and I will do my best to help you. Having previously worked with large enterprises as well as many smaller start-ups, I have a broad range of experience and knowledge of the full software delivery lifecycle. Why should you hire me: ✅ I work fast and achieve your goals on time ✅ My total programming experience is 10+ years ✅ 200+ successful projects delivered ✅ Solid logic reasoning and problem-solving skills ✅ Responsiveness and high-quality delivery ✅ Best software development practices using ✅ Highly skilled Full Stack Developer and Mobile Developer team for enterprise solutions I am not interested in "one-hour" or "one-day" jobs. I establish long-lasting relationships with my clients. I always consider a commitment to the result as the first priority. Since 2015, I've been working as CEO at Lvivity - a boutique dev shop that I founded. My team will deliver you the best service, communication, and also reliable, and scalable code that will fulfill your business needs. Here is a list of technologies I have experience with: 🔸 Programming - .NET C# Architect, PM, BA, CEO @ Lvivity.com 🔸 Databases - MSSQL, MySQL, MongoDB, Oracle, Flat files (CSV, XML) 🔸 Source Control - TFS, GIT, SVN 🔸 API's - Google, eBay, Facebook, LinkedIn, Twitter, Amazon 🔸 And much more: ASP.NET MVC / Core2 / WPF / Xamarin / SWIFT, React.Native, Flutter, Azure, AWS So, I guarantee my enthusiasm for work and fulfilling my project with inexpressible efforts.
Lvivity
Associated with
Lvivity
$1M+
earned
Muhammad A.
$35/hr
100% Job Success
$70K+ earned
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⭐ 80+ Projects Delivered | $70K+ Earned | 100% Job Success | 10 Years on Upwork Not just a developer. A technical partner who gets your product shipped — and leaves your team able to own it after I'm done. I work with founders, CTOs, and product teams building .NET backends that actually scale. From greenfield SaaS to legacy ASP.NET migrations to microservices rewrites — I've done it across Healthcare, Cybersecurity, SaaS, Travel & Hospitality, and EdTech. 🔧 Sound familiar? • Your SaaS backend wasn't built to grow — and it's showing • Legacy ASP.NET app drowning in technical debt • APIs are slow, DB queries are timing out, users are complaining • You need microservices but don't know where to start • Cloud costs are climbing with nothing to show for it 🚀 How I work: Discovery → Architecture → Build → QA → Deploy → Scale No hand-holding needed. You describe the problem, I own the solution end to end. 💻 Core Stack: → Backend: ASP.NET Core, C#, Web API, EF Core, Dapper → Frontend: Angular (2–18), React, Next.js, TypeScript → Architecture: Clean Architecture, Microservices, CQRS, DDD → Database: SQL Server, PostgreSQL, Redis → Cloud & DevOps: Azure, AWS, Docker, CI/CD, Hangfire → Auth & Security: JWT, OAuth, Identity Server, HIPAA-aware 🎯 I can plug in as: ✅ Senior developer on your existing team ✅ Tech lead owning architecture decisions ✅ Fractional CTO for startups without a technical co-founder Let's build something that doesn't fall apart at scale. Drop me a message.
Muhammad A. has worked .
Vishnu P.
$20/hr
100% Job Success
$40K+ earned
Available now
Offers consultations
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I’m a Senior Full Stack Developer with over 9 years of experience delivering scalable, high-performance web applications and AI-powered solutions across multiple domains. My expertise spans Node.js, Next.js, Angular, React, and JavaScript/TypeScript, with a strong foundation in backend architecture, API integrations, and cloud-based deployments. On the backend, I specialize in .Net, .Net Core, Node.js, Express, and Prisma ORM with databases like PostgreSQL and MongoDB, building efficient, maintainable, and secure services that adhere to modern coding standards and best practices. I’m deeply focused on AI integrations, connecting intelligent systems through OpenAI, Google Cloud AI, and other ML-driven APIs to enhance automation, personalization, and decision-making workflows. I take pride in writing clean, testable, and production-grade code, maintaining strong version control with GitHub, managing agile sprints via JIRA, and collaborating seamlessly with cross-functional teams. My approach emphasizes scalability, modular architecture, CI/CD readiness, and end-to-end delivery excellence — from concept to deployment. Whether building interactive Next.js dashboards, Angular enterprise applications, or real-time React interfaces, I ensure every project aligns with performance, security, and long-term maintainability standards. Core Skills: Languages: JavaScript, TypeScript, SQL Frontend: React, Next.js, Angular, HTML5, CSS3 Backend: Node.js, Express, Nest.js, .NET, .Net Core Databases: PostgreSQL, MongoDB, Prisma ORM AI & Automation: OpenAI API, Google Cloud AI, workflow automation Tools: GitHub, Jira, Postman, Docker, AWS, CI/CD pipelines Practices: Clean Code, SOLID Principles, Scalable Architecture, Agile & Scrum
Jagdeep H.
$20/hr
99% Job Success
$400K+ earned
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🏅14+ Years of Experience🏅 Top-Rated Plus | Full-Stack Software Developer With 14+ years of experience, I specialize in building robust, scalable, and secure software solutions for startups, SMBs, and enterprises. My expertise spans modern full-stack development, cloud-native applications, AI/ML integrations, and enterprise-grade QA, making me a versatile partner for end-to-end digital transformation. Core Technology Expertise • Backend & Web: ASP.NET Core MVC, ASP.NET Web API, VB.Net, SQL, Entity Framework, LINQ, Dapper • Frontend & Mobile: Angular, AngularJS, React, Blazor, Next.js, Bootstrap, jQuery, AJAX, HTML, CSS • Cloud & Middleware: Microsoft Azure Services, Azure Service Bus, serverless functions • AI/ML: Machine Learning, Data Analysis, Natural Language Processing, LLM-powered solutions Project Management & Tools • Agile/Scrum, TDD, Jira, Trello, GitHub/GitLab/Bitbucket, CI/CD pipelines, Slack/Asana Industry Experience • Healthcare & RCM: EMR/EHR, Practice Management, Medical Billing, CMS compliance • Automotive & Supply Chain: ERP, workflow automation, real-time tracking • E-learning: LMS, gamification, adaptive learning systems • Fintech: Secure payment gateways, PSD2 compliance, fraud prevention Specialized Services • Custom Software Development: Web, desktop, and Windows apps (Electron.js) • API Integrations: Social platforms, Google APIs, payment systems (PayPal, Stripe, Square) • ERP Development: Full-cycle ERP solutions with ongoing support • Web & UX/UI: SEO-optimized, responsive, and accessible designs • QA & Testing: Functional, regression, compliance, automation, mobile app testing (iOS/Android), API testing, CI/CD validation Why Clients Choose Me • Top-Rated Plus with a consistent record of successful project delivery • Strong balance of technical depth and business consulting expertise • Proven ability to translate complex requirements into user-friendly, scalable products • Commitment to clear communication, fast turnaround, and zero-compromise quality Let’s connect to transform your ideas into impactful, future-ready software solutions that deliver measurable business outcomes.
smartData Inc Agency
Associated with
smartData Inc Agency
$70M+
earned
Vishal M.
$20/hr
100% Job Success
$100K+ earned
Available now
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Greetings! I have 6+ years of professional experiences in WEB and MOBILE APP development. I used to be a full stack developer, I provide professional service at a reasonable price. SKILLS: 1) Web Development * Asp.net Core, Asp.net MVC, Asp.net MVC web api, Hang Fire,signalr * WPF,WCF * Php,Cake Php, Laravel * AngularJS,ReactJS, Node.js * Web basis(Javascript, HTML5, Jquery UI, CSS3, Bootstrap) * API development and integration 2) Mobile App * React Native * Xamarin 3) Windows App *.NET framework / WPF / C#/VB 4) Database *MSSQL *My sql. *Mongo DB I look forward to working with you soon. Thanks for reading
MindWebTree
Associated with
MindWebTree
Akash L.
$20/hr
100% Job Success
$80K+ earned
Available now
Offers consultations
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🥇 Top Rated Plus | Senior .NET & Azure Software Engineer 🏆 10+ years of experience with Microsoft Azure 🤓 1 x Microsoft Azure Certified | 3 x MongoDB Certification | 2 x PMI Certification I help tech teams ship high-quality cloud applications faster using .NET, Azure PaaS, microservices, and automated CI/CD pipelines. With 10+ years building mission-critical platforms for finance, healthcare, e-commerce and logistics, I deliver secure, scalable, and maintainable solutions that accelerate business impact. I specialize in crafting scalable, secure, and performance-optimized applications using .NET, Blazor, Azure, AWS, and modern frontend frameworks such as Angular and React. I’ve led architecture and development for Fortune 500 firms and startups alike, delivering robust solutions across logistics, finance, e-commerce, healthcare, and gaming. 🔍 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐫𝐢𝐧𝐠: ✅ Scalable Microservices using the latest .NET version ✅ Blazor & Angular/React for interactive UIs ✅ CI/CD pipelines (GitHub Actions, Jenkins, Azure DevOps) ✅ Cloud-native deployments (Azure | AWS | Docker | Kubernetes) ✅ Real-time systems with Redis, WebSocket, Kafka ✅ Strong debugging, optimization, and code quality focus 📈 𝐑𝐞𝐜𝐞𝐧𝐭 𝐖𝐢𝐧𝐬: - Designed a healthcare practitioner search system scaling across AWS with real-time Elasticsearch - Led logistics platform revamp for a US-based company using .NET 10 + React - Built scalable e-commerce and casino gaming platforms from scratch 🤝 Let’s connect if you're looking for long-term value, high-quality code, and a dedicated partner.
Akash L. has worked .
Himanshu B.
$13/hr
100% Job Success
$30K+ earned
Available now
Offers consultations
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I help startups, SMEs, and enterprise businesses build secure, scalable, and high-performance software solutions that solve real business challenges. With over 6+ years of experience in Full Stack Development, I specialize in developing SaaS platforms, ERP systems, CRM solutions, custom web applications, enterprise APIs, and cloud-based software using modern Microsoft technologies. I believe great software is more than just clean code. It should improve business operations, automate repetitive tasks, enhance user experience, and support long-term growth. Whether you're building a new product, modernizing an existing application, or expanding your development team, I can help deliver reliable, production-ready solutions. Technical Expertise - ASP.NET Core, .NET Framework, .NET 6/7/8/9 - C#, ASP.NET MVC, Web API, REST API Development - Angular, React, Blazor, TypeScript, JavaScript - HTML5, CSS3, Bootstrap, Tailwind CSS - SQL Server, PostgreSQL, MongoDB - Entity Framework Core, Dapper - Azure App Services, Azure Functions, Azure SQL - AWS EC2, S3, RDS - Docker, Kubernetes, GitHub Actions, CI/CD Pipelines - SignalR, Hangfire, Background Services - OpenAI, ChatGPT, Gemini API Integration - Stripe, Razorpay, Google APIs - OAuth, JWT Authentication, Third-Party API Integration Business Solutions I've Delivered - Enterprise Resource Planning (ERP) Systems - Customer Relationship Management (CRM) Platforms - SaaS Products - Logistics & Fleet Management Systems - Manufacturing & Production Management Software - Accounting & Financial Management Solutions - Inventory & Warehouse Management Systems - Healthcare Applications - Customer Portals & Admin Dashboards - AI-Powered Business Applications Every project I work on is built with scalability, security, and maintainability in mind. I follow Clean Architecture, SOLID Principles, and industry best practices to ensure applications remain easy to maintain and ready for future growth. Why Clients Choose Me - Business-focused development approach - Clean, maintainable, and scalable code - Strong communication throughout the project - Fast response and reliable delivery - Experience with enterprise-grade applications - End-to-end development from planning to deployment - Long-term maintenance and technical support - Ability to work independently or with existing development teams I enjoy working closely with clients to understand their business goals before writing a single line of code. This allows me to recommend the right architecture, technology stack, and implementation strategy that aligns with both current requirements and future expansion. Whether you need a custom business application, a scalable SaaS platform, a secure REST API, cloud migration, AI integration, or ongoing support for an existing product, I am committed to delivering high-quality solutions that create real business value. If you're looking for a dependable .NET Full Stack Developer who takes ownership, communicates clearly, and delivers production-ready software on time, I'd be happy to discuss your project and become your long-term technology partner.
Himanshu B. has worked .
Unique It Solution
Associated with
Unique It Solution
Md. Nazmul Hasan N.
$25/hr
100% Job Success
$30K+ earned
Available now
Offers consultations
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🚀 What I Help Businesses Do: ✔ Automate operations using AI (Claude, MCP, AI workflows, integrations) ✔ Build SaaS platforms from idea to production ✔ Replace manual processes with smart systems ✔ Improve performance, scalability, and cost efficiency ✔ Integrate APIs, third-party systems, and automation tools Technical decisions are business decisions. My goal is to help you scale your product’s impact without scaling your burn rate. 1. Share your business scaling challenges. 2. Get practical solutions within 2 weeks. 3. Achieve up to a 5× business impact. 🧩Core Expertise : - Generative AI & LLMs: LangChain, LangGraph, LlamaIndex, LangSmith, HuggingFace, OpenAI (GPT-4, GPT-3.5), Mistral7B, Gemini, Stable Diffusion, Midjourney - RAG & AI Agents: Retrieval-Augmented Generation, semantic search, multi-agent workflows, Model-Code-Pipeline (MCP) servers, autonomous task orchestration - Automation & Orchestration: n8n, custom workflow automation, SaaS integrations, API-based pipelines for business process optimization - Computer Vision & Image Processing: Object detection (YOLO, SSD, R-CNN), image segmentation (Mask R-CNN), OpenCV, transfer learning, fine-tuning pre-trained models - Cloud & Deployment: Azure, AWS, GCP, Docker, CI/CD pipelines for scaling AI systems across distributed environments - Full-Stack AI Applications: Backend APIs (.NET Core, Node.js, Python FastAPI), frontend dashboards (React, Angular, Blazor), real-time interfaces for AI-driven insights 💡 My Approach : 1. Problem Discovery – Understand business goals, data constraints, and end-user requirements. 2. AI Architecture Design – Choose the right models, frameworks, and pipelines for scalable performance. 3. Development & Integration – Build AI-driven features integrated with existing products or new applications. 4. Deployment & Monitoring – Deliver production-ready systems with continuous improvement loops. If you’re building the next generation of AI-driven platforms, I can help architect, build, and scale it. 📅Let’s schedule a meeting to discuss how AI can transform your project.
Konstantin P.
$32/hr
100% Job Success
$200K+ earned
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I’m a senior .NET engineer with 10+ years of experience building scalable backend systems and modern web applications using ASP.NET Core and React. I design clean architectures, implement REST APIs, and build production-ready SaaS platforms. I also integrate AI capabilities, including OpenAI-based agents, RAG pipelines, and intelligent automation features into real-world products. On most projects, I take full ownership of backend development - from system design to production-ready delivery. In most projects, I am responsible for: • Design scalable backend architecture • Build secure ASP.NET Core Web APIs • Implement business logic and domain-driven structures • Integrate AI capabilities (OpenAI API, RAG, vector search, AI agents) • Optimize SQL Server performance • Structure systems using Clean Architecture and SOLID principles • Modernize and refactor legacy .NET applications 🔹 What You Get Working With Me • Clear technical planning before development begins • Clean, maintainable C# code • Scalable REST APIs designed for growth • Well-structured backend architecture • Reliable AI integration when needed • Transparent communication and predictable delivery I build backend systems that remain stable, extensible, and ready for future evolution - including AI-powered features. 🔹 Core Expertise Backend & Architecture: • C# • .NET Core / .NET 6 / .NET 7 / .NET 8 • ASP.NET Core, ASP.NET Boilerplate, ASP.NET Zero, ABP IO • REST API / Web API development • Entity Framework Core • SQL Server • Microservices architecture • Clean Architecture (SOLID, DDD) • Performance optimization • Legacy system modernization AI & Intelligent Systems: • OpenAI API & AI agents • RAG pipelines & vector databases • Semantic Kernel & tool orchestration • Embedding AI features into production SaaS platforms Frontend (When Required): • React • Angular • Blazor • JavaScript / TypeScript (My primary strength is backend and system architecture.) Additional Experience: • SaaS platform development • Third-party API integrations (Stripe, Google, Amazon, etc.) • Data modeling and database optimization • Unit testing (NUnit, xUnit) • Refactoring and architecture improvements 🔹 Best Fit Projects • Building scalable backend systems from scratch • Developing ASP.NET Core Web APIs • AI integration into existing products • SaaS platform architecture • Migrating legacy applications to .NET Core • Long-term product development partnerships If you're building a serious product and need a Senior .NET developer who can design robust backend architecture and integrate modern AI capabilities - I’d be glad to help.
Konstantin P. has worked .
DevTrust
Associated with
DevTrust
$2M+
earned
$35/hr
100% Job Success
Available now
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If you are searching for a senior .net developer who can design, develop, optimize, and scale enterprise applications using C#, ASP.NET Core, ASP.NET MVC, and SQL Server — you are in the right place. I am a professional .net developer with 8+ years of experience building high-performance web applications, RESTful APIs, SaaS platforms, fintech systems, ERP solutions, and enterprise software using Microsoft technologies. As a full stack .net developer, I specialize in: • C# .NET development • ASP.NET Core development • ASP.NET MVC architecture • .NET Framework applications • ASP.NET Web API development • RESTful API design and integration • Entity Framework and EF Core • LINQ and advanced C# programming • Microsoft SQL Server and SQL optimization • Database design and performance tuning • Azure cloud deployment • Azure App Services and Azure SQL • Azure DevOps and CI/CD pipelines • Blazor development • Angular and TypeScript integration • React JS integration • JavaScript, jQuery, HTML5, CSS3 • Microservices architecture using .NET Core • Authentication and Authorization (JWT, OAuth2, Identity) • Role-Based Access Control (RBAC) • SignalR real-time applications • Redis caching • Hangfire background jobs • Docker containerization • API integration (Twilio API, Payment APIs, Third-party APIs) I have delivered scalable .net developer solutions for: •Fintech applications •SaaS multi-tenant platforms •ERP systems •CRM systems •Healthcare software •E-commerce back-office systems •Enterprise automation platforms •Government and compliance systems My .net developer approach focuses on: • Clean architecture and SOLID principles • Scalable backend systems using ASP.NET Core • Optimized SQL Server queries and indexing • Secure Web API development • Cloud-ready deployment on Microsoft Azure • Maintainable and modular C# code • High-performance enterprise-grade applications Whether you need a backend .net developer for ASP.NET Core Web API, a full stack .net developer with Angular or Blazor, or a senior .net developer for enterprise system architecture — I can help build secure, scalable, and production-ready solutions. If you are looking for a reliable, performance-focused, and experienced .net developer, let’s build your next enterprise application.
Muhammad Zaman M. has worked .