Talent badge filter
Skills filter
Select talent location
Select talent time zones
$20/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
End of list.
Conversational AI Engineer with extensive experience designing, building, and deploying production-grade chatbots and AI assistants for real-world business use cases. I have delivered large-scale conversational systems across multiple platforms, including Dialogflow (ES & CX), ChatGpt, Microsoft Bot Framework, Amazon Lex, IBM Watson Assistant, Rasa, Botpress, and ManyChat.
I handle the entire chatbot lifecycle end-to-end — from conversation design and NLP modeling to backend development, webhook logic, API integrations, authentication, deployment, monitoring, and continuous optimization.
I’ve built chatbots for:
Customer support & self-service automation
Lead qualification & sales workflows
Internal tools & business process automation
Enterprise integrations (CRM, ERP, ticketing systems)
WhatsApp Integrations
My solutions run reliably across web, mobile apps, WhatsApp, and custom front-end interfaces, and are designed to be scalable, accurate, and easy to maintain under high traffic.
I focus on business outcomes, not just tools — building conversational systems that reduce support load, improve response accuracy, and integrate cleanly into existing ecosystems.
$35/hr
100%
Job Success
Offers consultations
Start of list.
End of list.
My time is valuable, so you can expect short-term results when you choose me. I prefer to use developed components and solutions and determine the optimal solution for each client. I can handle all tasks, from front-end to Windows administration and backend development.
✔️ 9 times Umbraco MVP
✔️ Umbraco Certified
✔️ A super active member of the Umbraco Community
✔️ Contributor to Umbraco Core
✔️ Umbraco 10, Umbraco 9, Umbraco 8, Umbraco 7, Umbraco 4 Expert
✔️ Umbraco Cloud Expert
✔️ Umbraco Headless(Heartcore) Expert
✔️ Vendr specialist
✔️ C#, .NET, .NET Core, MVC, Web Forms, SQL, Web Services, Web APIs, Razor, Blazor, .NET Aspire
✔️ Wide experience in Angular JS, VueJS, jQuery, HTML5, CSS3
✔️ AI-driven applications
✔️ Azure Machine Learning
✔️ Cognitive Services
Skilled in integrating artificial intelligence solutions into websites and business operations, leveraging Azure's robust cloud services. Experienced in developing AI-driven applications that enhance user experience and streamline processes. Proficient in utilizing Azure Machine Learning, Cognitive Services, and other AI tools to create scalable and efficient solutions tailored to meet business needs.
Oleksandr S.
has worked
.
$30/hr
99%
Job Success
$90K+ earned
Start of list.
End of list.
I am a Senior .NET Developer and Azure Cloud Specialist with 10+ years of experience, specializing in nopCommerce, enterprise integrations, and high-performance web applications.
I’ve delivered 51 successful projects on Upwork, including long-term engagements exceeding 4,000+ hours and $90K+, where I handled complete system architecture, development, and integrations like SAP Business One + nopCommerce.
What makes me different:
• I don’t just follow requirements, I identify gaps and improve your system
• I focus on performance, scalability, and business impact, not just code
• I can handle complex integrations, legacy systems, and high-load applications
• I communicate clearly and take full ownership of delivery
Core Expertise:
• ASP.NET, .NET Core, C#, MVC, Web API
• Microsoft Azure (cloud architecture, deployment, scaling)
• nopCommerce (custom development, plugins, performance tuning)
• ERP & API integrations (SAP, payment gateways, third-party systems)
• MSSQL, MySQL, database optimization
• Frontend: Bootstrap, jQuery, AJAX
Typical clients I work with:
• Businesses scaling their eCommerce platforms
• Companies struggling with poor-performing or messy codebases
• Founders who need a reliable long-term technical partner, not freelancers to manage
I am comfortable taking full ownership of your project, whether it’s:
• Building from scratch
• Fixing what others couldn’t
• Scaling systems to handle real growth
If your project is serious and you value quality, let’s connect.
Associated with
Tech Prastish Software Solutions Pvt Ltd
$7M+
earned
$50/hr
100%
Job Success
$200K+ earned
Start of list.
End of list.
Professional Full Stack Developer with 15+ years of experience developing Web, Cloud (SaaS), and Desktop applications, in .NET Core and .NET Framework, mastering the following languages and technologies:
▪ Microsoft Azure, C#, ASP.NET, Razor, MVC, Web API, Entity Framework, WebForms.
▪ HTML5, CSS3, JavaScript, JQuery, Bootstrap.
▪ SQL Server, MySQL, PostgreSQL, Oracle.
▪ Winforms Desktop.
I've been working with Microsoft Azure Cloud technologies for 12+ years:
▪ SaaS and multitenant cloud applications.
▪ Azure AppServices and FunctionApps implementation.
▪ Production/staging/development environment life-cycle strategies.
▪ SQL Azure implementation and recovery strategies.
▪ Azure Active Directory, and Users management.
▪ CI/CD strategies and GIT/TFS integration.
▪ and more...
Also, I've worked with dozens of APIs and libraries, including but not limited to:
▪ Twilio, Stripe, SendGrid, MailChimp, MailKit.
▪ Google Maps, GeoJSON, Adobe PDF, Sway.
▪ ShareFile, SSH.NET.
▪ Swagger, AutoMapper, Mediatr, CSVHelper.
▪ Selenium, Bogus, Moq, NLog, Serilog, NUnit, XUnit.
▪ Bootstrap, JQuery, DataTables.js, Chart.js, Flot.js, PerfectScrollbar.
Highly skilled in Database development, and data migration/transformation:
▪ T-SQL programming: Stored procedures, functions, and cursors.
▪ Data migration, Integration, and Reporting Services SSIS/SSRS.
▪ DB normalization and optimization.
As a senior developer, I'm used to working with the majority of software architectures, design patterns, and methodologies, like:
▪ DDD, Clean Architecture, Microservices, N-Tier Layers, Event-Source Driven.
▪ Dependency Injection, Repository, MVC, Factory, Mediator, and more.
▪ DevOps, CI/CD, Jira, ClickUp, GitHub, GitLab, TFS, Tortoise SVN.
▪ Methodologies: Scrum, Agile, CMMI, RUP.
Andres R.
has worked
.
$15/hr
100%
Job Success
$10K+ earned
Start of list.
End of list.
I’m a .NET Developer with 6+ years of experience in creating high-quality Windows and web apps.
Key Skills:
ASP.NET Core (5-8), MVC, Web Forms
WPF, Windows Forms
HTML5, CSS3, Bootstrap, JavaScript, jQuery
API Integration, Kendo UI, Telerik
I focus on performance tuning and optimizing database queries. With solid expertise in client-side technologies and frameworks like WPF, MVVM, and XAML, I’m committed to delivering efficient, scalable solutions.
Clear communication is my priority. I ensure clients are always updated on progress. Let’s connect to discuss how I can help your next project!
Aamir B.
has worked
.
$30/hr
100%
Job Success
$200K+ earned
Start of list.
End of list.
Principal Software Engineer with 23+ years of experience particularly using Microsoft Technologies like C#, .NET, VB.NET, VBA, VB 6.0, VC++, MFC, Win32, SQL Server, Azure, .NET Core, and other technologies like Angular, React, Vue, NextJS, NodeJS, PHP, PostgreSQL, MySQL, Oracle, Sybase and MongoDB.
Sandeep N.
has worked
.
$28/hr
100%
Job Success
$800K+ earned
Offers consultations
Start of list.
End of list.
🚀 Senior .NET Developer | SaaS Architect | Full-Stack Web Expert | .Net Developer | .Net Expert | .Net Engineer | Angular Expert | Azure | Database Expert | .Net Legacy Application | .Net Full Stack Development
Turning Complex Ideas into Scalable, High-Performance Applications
Welcome to my profile!
I’m Kapil Sharma, a Senior .NET Developer and Full-Stack Engineer specializing in building secure, scalable, and high-performing web & SaaS applications.
With years of hands-on experience in C#, .NET Core, ASP.NET Core, Blazor, Angular, and React, I help startups and enterprises transform ideas into robust digital products that are fast, secure, and future-ready.
If you're looking for a developer who understands architecture, scalability, performance optimization, and clean code principles you're in the right place.
💡 What I Can Do For You
🔹 Custom .NET Application Development :- Design and develop enterprise-grade applications using C#, .NET Core, and ASP.NET Core.
🔹 SaaS Platform Development:-Build secure, multi-tenant SaaS solutions with subscription models, payment integration, and scalable cloud infrastructure.
🔹 REST APIs & Microservices :- Develop high-performance APIs and microservices architecture for modern distributed systems.
🔹 Blazor Web Applications :- Create interactive, real-time web apps using Blazor with full C# integration.
🔹 Angular & React Front-End Development:- Develop modern, responsive Single Page Applications (SPAs) with exceptional UX.
🔹 Full-Stack Development:- Seamless front-end and back-end integration for complete, production-ready solutions.
🛠️ Technology Stack
💻 Front-End:- Angular | React | Blazor | JavaScript | TypeScript | HTML5 | CSS3
⚙️ Back-End:- C# | .NET Core | ASP.NET Core | MVC | Web API | Microservices
🗄️ Databases:- SQL Server | MySQL | MongoDB | Cosmos DB | Supabase | Firebase | PostgreSQL
☁️ Cloud & DevOps:- Azure | AWS | CI/CD Pipelines | Git | Azure DevOps
🔐 Integrations:- JWT Authentication | Stripe | PayPal | Third-Party APIs
🎯 Why Clients Choose Me
✔️ Clean, scalable, maintainable code
✔️ Performance-optimized applications
✔️ Secure architecture & best practices
✔️ Clear communication & on-time delivery
✔️ Long-term technical partnership mindset
✔️ Business-focused solutions (not just coding)
I don’t just write code — I design systems that grow with your business.
📈 Let’s Build Something Powerful
Whether you need:
* A custom SaaS platform
* A scalable enterprise web application
* API integrations
* Performance optimization
* Or a complete full-stack solution
I’m here to deliver results that exceed expectations.
Let’s connect and bring your vision to life.
Best Regards,
Kapil Sharma
Senior .NET Developer | SaaS Architect | Full-Stack Engineer
🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 that can be used to find me:
VUE. JS | HTML | CSS | JavaScript | JQuery | SQL | Web Architecture | C# | Figma | UI/UX | BootStrap | Web Design | ChatGPT API Integration | React JS | .NET Core | .NET Framework | API Integration | ASP.NET | ASP.NET MVC | ASP.NET Web API | Amazon Web Services | Angular | Angular 15+ | AngularJS | Auth0 | Azure DevOps | C# | Desktop Application | Docker | Domain-Driven Design | Front-End Development | Google Calendar API | Microservice | Microsoft Azure | Microsoft IIS | Microsoft SQL Server| MongoDB | PostgreSQL | RESTful API | Telerik | TypeScript | Web Application | Web Development | backend | .NET Expert | Full Stack .NET Developer | Web Design | Entity Framework | .NET 9 | .NET 8
.Net Developer, .Net Expert, .Net Fullstack Developer, .Net Fullstack Expert, Expert .Net Developer, .Net Core Developer, .Net Core Expert, Expert .Net Core Developer, C# .Net Expert, .Net Maui, asp.net Expert, asp.net api, asp.net web developer, Expert asp.net web developer, asp.net Mvc developer, asp.net Core developer, asp.net Developer, asp.net Expert, C# asp.net, asp.net Mvc Expert, asp.net Core Expert, Expert asp.net Developer, C# Expert, C# Developer, .Net frameworks, .net wpf c# developer, Windows Form, windows desktop App developer, Web API, SQL Server Developer, RESTful APIs, Entity Framework, Blazor, Azure
Kapil K.
has worked
.
$60/hr
100%
Job Success
$50K+ earned
Available now
Offers consultations
Start of list.
End of list.
Hello! 👋 I’m a CTO, Senior .NET Core Developer, and AI Engineer with 20+ years of experience in C#, Microsoft Azure, cloud architecture, enterprise software, and Artificial Intelligence solutions.
I help companies build scalable SaaS platforms, enterprise systems, internal tools, AI assistants, AI copilots, and production-ready AI products. As an AI Developer, I combine backend engineering with AI Development, Automation, API integration, and .NET Core architecture to create reliable Operational systems that solve real business problems.
📘 About Me
I’m a technical leader with deep experience in software architecture, C# development, and .NET Core systems. Over the years, I’ve designed cloud-native platforms, distributed applications, Web API services, microservices, and enterprise backend systems for complex environments.
My current focus is on Artificial Intelligence, AI Development, AI Agent Development, and practical Automation for business workflows. As an AI Developer, I build systems that connect LLMs, RAG, Azure AI Services, APIs, and business logic into stable products. The goal is not just to add AI features, but to create Operational value: fewer manual tasks, better decisions, faster delivery, and cleaner internal processes.
As an AI Developer, I work across the full product lifecycle: discovery, architecture, backend logic, API integration, cloud setup, testing, deployment, and long-term support. I use .NET Core, Microsoft Azure, Orleans, RESTful architecture, and CI/CD to make sure every solution is secure, maintainable, and ready for real users.
A strong part of my work is AI Development for SaaS products and enterprise platforms. I design Artificial Intelligence features, AI agents, AI assistants, copilots, workflow Automation, and API-connected systems that support real Operational needs. My background in .NET Core and distributed architecture helps me build high-concurrency applications that stay stable as usage grows.
I also help teams modernize existing systems. As an AI Developer, I can review architecture, improve backend performance, connect AI services, build custom Automation, and turn fragmented workflows into one clear Operational process.
🛠️ Technical Skills
C# & .NET Core
Microsoft Azure & Cloud Architecture
Orleans Distributed Virtual Actor Framework
RESTful Architecture & Web API
SaaS Development & Microservices
Software Architecture & Design Patterns
Artificial Intelligence solution design
Artificial Intelligence architecture
AI Development lifecycle
.NET Core architecture
AI Development for enterprise systems
AI Developer implementation
AI Agent Development & AI assistants
Retrieval Augmented Generation
LLM Prompt Design
Azure AI Services
API Design and Integration
Automation workflows
Operational system architecture
MAUI & Blazor
Angular
DevOps, Kubernetes & CI/CD
Aspire
🌿 Strategic Skills
Enterprise Software Architecture Planning
Artificial Intelligence strategy
AI Development roadmap
AI Developer technical leadership
Automation planning
Operational workflow optimization
Cloud Migration & Optimization
Performance Optimization
Security & GDPR Compliance
Cost Optimization
Agile & Scrum Team Leadership
Stakeholder Communication
Technical Discovery & Roadmapping
TOGAF Methodology
Problem Solving
🏆 Certifications
Microsoft Certified: Azure AI Associate
Microsoft Certified: Azure Developer Associate
Microsoft Certified: Azure DevOps Expert
Microsoft Certified: Azure AI Fundamentals
Xamarin Certified Mobile Developer
Agentic AI developer, C# ai, ai integration, ai api integration,ai integration specialist, ai agent saas, ai saas developer, ai architect, ai solution architect, ai chat bot, ai chatbot saas, open ai chatbot, full stack developer, multi-agent,
ai agent automation, ai automation agency, chatbot automation,, c# developer, c# .net, .net ai, .net developer, .net fullstack, ai agent builder, ai agent n8n, ai agent crypto, ai agent automation, rag, agentic rag, agentic rag, ai engineer rag, agentic rag, full stack app developer, full stack developer ai, artificial intelligence, artificial intelligence consultant, ai llm, llm agent, ai llm developer, llm chatbot, langchain agent, ai developer langchain, llm langchain, ai agent, ai voice agent, customer service agent, web developer, azure ai, azure ai studio, azure devops, azure architect, ai engineer, prompt engineer, product engineer, ai workflow, ai workflow automation, workflow automation, orchestration, ai prompt engineer, claude prompt, ai prompt engineering, ai prompt,prompt engineer claude, open ai developer, open ai chatbot, ai models, ai integration, ai integration specialist, ai integrator, ai api integrator, ai powered, claude certified.
Konstantin S.
has worked
.
Associated with
Managed Code
$100K+
earned
$40/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
🔥 Send me your idea — and I’ll give you a free initial consultation with practical thoughts, possible solutions, and a rough time and cost estimate.
Legacy systems draining budget, slowing delivery, and blocking growth?
At OSKI Solutions, we help companies modernize legacy applications and build scalable cloud-ready products with our 3x delivery strategy: experienced engineers + AI-assisted coding + disciplined execution.
That means you get more than just developers. You get a team that can move significantly faster on implementation, reduce repetitive work through AI-assisted workflows, and still keep architecture, maintainability, and business priorities under control. Most of our engineers are from Ukraine, and we’ve built a delivery model that combines strong technical talent with modern AI tools to help clients ship faster without sacrificing code quality.
Over the past 20+ years, I’ve worked as a senior engineer, architect, and ex-CTO, helping startups, SMBs, and enterprise clients rebuild outdated systems into secure, scalable, future-ready platforms. We work hands-on with .NET, Node.js, React, and modern cloud infrastructure to turn brittle systems into products that are easier to maintain, extend, and grow.
What we do best
Backend Development
.NET Core, ASP.NET MVC, C#, Entity Framework
Node.js, Express, REST APIs, GraphQL APIs
Microservices, event-driven systems, business-critical backend logic
Frontend Development
React, Next.js, TypeScript, Redux
Angular, Vue.js, SPA and PWA development
Responsive interfaces, Tailwind, Material UI
Legacy Modernization
Legacy .NET and custom business platform modernization
Monolith to modular/cloud migration
Performance, maintainability, and technical debt reduction
CMS & Business Platforms
Umbraco CMS, Umbraco Cloud, migrations, custom development
ERP-related systems and workflow platforms
Internal tools, client portals, dashboards, admin systems
Cloud & DevOps
Azure, AWS, Google Cloud
Docker, Kubernetes, CI/CD pipelines
GitHub Actions, GitLab CI, deployment automation
Databases
SQL Server, PostgreSQL, MySQL
MongoDB, Redis, caching and query optimization
API Integrations & SaaS
Stripe, PayPal, Twilio, SendGrid
Slack, Shopify, Zoom, QuickBooks, Google Maps
SaaS integrations, workflow automation, external service connectivity
Why clients choose OSKI Solutions
3x delivery strategy: senior engineers + AI-assisted coding + structured execution
20+ years of experience modernizing complex systems
CTO-level thinking focused on business outcomes, not just tickets
Full-cycle delivery from architecture to deployment
Lean, practical approach that keeps MVPs and modernization efforts within scope
Clear communication with weekly demos, tracked hours, and transparent reporting
Selected results
One Motion Technologies — designed and built ERP system from scratch
TutorPro — helped scale a SaaS platform, supporting 3x adoption growth in 2 years
Umbraco platforms — delivered 15+ CMS and business platforms, including cloud migrations and integrations
What our 3x approach means in practice
We use AI to accelerate coding, prototyping, refactoring, and repetitive engineering tasks — but not to replace engineering judgment.
The result is:
faster delivery,
cleaner implementation,
better budget efficiency,
and a stronger technical foundation for future scaling.
💬 Send me a message, and I’ll review your project, suggest the best approach, and give you a realistic next-step plan.
Kyrylo O.
has worked
.
Associated with
OSKI solutions
$1M+
earned
$19.99/hr
100%
Job Success
$50K+ earned
Start of list.
End of list.
🏅 Upwork Top Rated PLUS | Enterprise AI Application Developer (.NET & Azure)
🌟 5-Star Client Feedback | 🧠 11+ Years Experience | ⏱️ 4000+ Hours
⚡ Fast Response | 🕒 Full-Time Availability | 🎯 Unlimited Revisions
🚀 AI | Generative AI | LLMs | RAG | FastAPI | .NET | Azure | Microservices
I am an Enterprise AI Application Developer specializing in .NET and Azure, with 11+ years of experience building scalable, secure, and intelligent applications. I help businesses design AI-powered, cloud-native solutions focused on performance, reliability, and long-term maintainability.
🧠 Core Expertise
🤖 AI & Generative AI
LLM apps, chatbots, copilots
Prompt engineering & AI automation
RAG-based knowledge systems
⚡ AI + FastAPI + .NET
High-performance AI APIs
Microservices & AI orchestration
Python + .NET integrations
🔗 Backend & Cloud
💻 .NET Stack
C#, .NET Core, Web API, Microservices
☁️ Azure & DevOps
Azure, Docker, CI/CD, scalable architectures
🛢️ Data & Frontend
SQL Server, NoSQL, vector search
React, Angular, Blazor
🚀 What I Deliver
✔ AI-powered applications
✔ Enterprise chatbots & assistants
✔ RAG systems & automation solutions
✔ Scalable .NET + Azure architectures
✨ Why Me
✔ Proven Upwork track record
✔ Clean, scalable code
✔ Enterprise & AI expertise
Let’s build intelligent, scalable AI solutions. 🚀
Praveen R.
has worked
.