If your ASP.NET or .NET Core application is unstable, hard to maintain, or stuck on legacy code, I can help.
I work on production systems where changes have real impact. Most of my projects involve stepping into existing codebases, understanding how they evolved, and improving them without breaking what already works.
Typical situations I handle:
- Recurring production bugs
- Legacy .NET Framework upgrades
- Tight coupling and accumulated technical debt
- Slow APIs and inefficient database queries
- Fragile deployment processes
In some cases a rewrite makes sense. In many others, targeted improvements deliver faster and safer results. I focus on choosing the approach that fits the system and the business constraints.
My core stack includes C#, ASP.NET Core, Web API, SQL Server, and Azure-based deployments.
If this matches your situation, send a short summary of the issue. I will review it and suggest a practical next step before any commitment.
.NET Framework
C#
ASP.NET Core
ASP.NET Web API
API Integration
Database Design
SQL
Microsoft SQL Server
Clean Architecture
CRM Development
Web Application Development
Vue.js
Nuxt.js
Software Architecture
Business Application Maintenance
Malik Farhan A.
Dubai, United Arab Emirates
$35/hr
4.5
30 jobs
I am a professional "Senior Full-Stack .NET Developer" with more than 10 years of rich experience in .NET Core, .NET MVC, .NET 5 to 10, C#, EF, Dapper, PSP Integrations, ERP integrations, Third party integrations, MSSQL, MySQL, PostgreSQL, Oracle DB, MongoDB, MS Azure, DevOps, Git and other relevant technologies and tools.
- I provide the best quality development services by using both conventional and latest approaches with the fastest delivery. I shape the ideas of my clients to develop high-technology web apps.
- I offer productive and highly engaging web development solutions for your custom business ideas or needs.
- My vast experience has given me a solid foundation to Design, Build and deliver quality projects.
- The scalable QA approach to optimize the structure, stability, and growth of
project.
✅ SKILLS AND EXPERTIESE
● Backend
- ASP.NET MVC, Core All Versions, currently working on .NET Core 6
- C# and VB Programming Language
- AutoMapper
- MS Azure
- Web API (REST, SOAP, JSON, XML)
- API's integrations (Payment Gateways, ERP API's, PSP Integrations, any cloud platform integration, etc)
- LINQ
- Entity Framework and Dapper ORM
- OOP
- Multi-Layer Architecture
- Microservices
- Clean/Onion Architecture
- Repository Design Pattern
- CQRS
● Frontend
- Blazor, Razor
- KendoUI
- AngularJS, JavaScript, JQuery, Ajax
- ReactJS, NextJS
- HTML5, CSS3, Bootstrap5
● AI & Machine Learning
- RAG (Retrieval-Augmented Generation)
- Vector Databases (pgvector), LLM Integration (Qwen, Llama, Gemma, Phi)
- Microsoft Agent Framework
- AI-Assisted Feature Development
● Database
- MSSQL Server, Azure SQL, MySQL, PostgreSQL, OracleDB, MongoDB
- TSQL, SQL queries, Stored procedures
- SQL Functions
- Triggers
● Source Control
- GitHub
- GitLab
- SourceTree
- Azure DevOps (TFS/Git)
- Bitbucket
● Project Management Tools
- JIRA
- Trello
- DevOps
- Monday . com
- Loop
- FAREXA Project Management
- MS Project
● Communication Tools
- Teams
- Slack
- I have excellent communication skills as I worked with many international clients in my career.
● Others
- Full-Stack Web Development.
- Requirements Analysis.
- Braintree Payment Gateway Integration.
- Stripe Payment Gateway Integration.
- ChargeBee Integration
- Any type of PSP integrations for crypto wallet or any FinTech related merchant i.e. ExLink Pay, VN Pay, My Fatoora, PaymentAsia, CheezeePay, Quick Pay, 1-2 Pay, Coorporation Pay, Help2Pay, Skrill, Neteller, Dragon Pay, etc.
- Optimized code writing practice.
- Best code efficiency approach.
- Follow different Software Development Models as per requirements like Agile, SCRUM etc.
- Deployment on cloud servers and other servers as well.
✅ WORKING STYLE
- Agile based project management.
- Full-time developer (40+ hours per week)
- I accompanies you at each development step and keeps you
informed about every segment. Once completed, following up is certainly
much crucial step to collect feedback and to ensure if anything needs attention to detail, it
will be done right there.
✅ COME AND VISIT ME
- Feel free to contact me to get the best and quality work to remove roadblocks in your way to success and efficiency.
💬 Let’s turn your idea into a powerful, high-performing product.
🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 that can be used to find me:
#FullStackDeveloper #DotNetDeveloper #CSharpDeveloper #ASPNetDeveloper #NetCore #WebDeveloper #FrontendDeveloper #HTMLCSS #JavaScriptDeveloper #TypeScript #ReactJS #Angular #Blazor #BackendDeveloper #RESTAPI #Microservices #EntityFramework #WebAPI #SQLDeveloper #DatabaseDesign #MongoDB #PostgreSQL #MySQL #Dapper #AzureDeveloper #AWSDeveloper #CloudComputing #Docker #Kubernetes #DevOpsEngineer #CICDPipelines #VisualStudio #Git #Postman #Swagger #IIS #UnitTesting #Selenium #IntegrationTesting #DebuggingExpert #AgileDeveloper #ScrumTeam #SoftwareEngineer #ProblemSolver #AI #RAG
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 | 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 | Angular | Angular 15+ | AngularJS | AI
Microsoft SQL Server
Microsoft Azure
Git
ASP.NET
SQL
C#
Bootstrap
AngularJS
JavaScript
ASP.NET MVC
Blazor
ASP.NET Web API
Azure DevOps
.NET Core
Entity Framework
Stripe API
DevOps
Twilio
Payment Gateway Integration
RingCentral Glip
SMS Gateway
API
Yaqub A.
Dubai, United Arab Emirates
$75/hr
5.0
146 jobs
Top 1% | 10+ Years Experience | 38,000+ Hours Delivered | $1M+ | Senior Dynamics 365 Architect, Full-Stack Developer & AI Specialist.
Dynamics 365 CRM, Power Platform & Full-Stack SaaS Engineers
I design, architect, and deploy high-performance SaaS applications, Power platform, Microsoft Dynamics 365 CRM, and custom AI frameworks to automate operations and eliminate workflow friction.
🛠️FULL-STACK SAAS & PROPRIETARY FRAMEWORKS
From greenfield MVP development to high-availability multi-tenant platforms, I build scalable digital products from concept to cloud deployment. Clients can also leverage our existing production-tested frameworks:
InspectionsTrack SaaS: Scalable field service and asset inspection tracking engine (Full case study available in my portfolio).
SkySoft Compliance SaaS: Multi-tenant compliance, audit prep, and data management platform.
AI Booking Assistant: Custom LLM-driven scheduling tools integrated directly into enterprise systems.
🎯 CORE TECHNICAL CAPABILITIES
Full-Stack SaaS Engineering: End-to-end web product development, multi-tenant architecture, REST/GraphQL APIs, microservices, cloud deployments (AWS / Azure).
Microsoft Dynamics 365: Sales, Customer Service, Field Service, Project Operations, Dataverse, C# Plugin Development.
Power Platform: Power Apps (Canvas & Model-Driven), Power Automate, Power BI Reporting & Dashboards.
AI & Automations: Microsoft Copilot Studio, custom AI Agents, LangChain, API Function Calling.
Legacy Migrations: Complex schema mapping and data migration from SugarCRM, Salesforce, Hubspot, and legacy databases to D365 & Business Central.
🎯PROVEN ENTERPRISE IMPACT
38,000+ Hours & $1M+ Earned on Upwork: Proven track record with 100% execution accountability.
NetCom Learning & OMAC: Architected end-to-end data consolidation, automated document generation, and role-based security models.
Ready to build a scalable SaaS application, modernize your CRM, or automate daily operations?
Click "Invite to Job" or send me a direct message on Upwork to schedule an intro call right here on the platform.
Microsoft Dynamics CRM
API Integration
SQL Server Integration Services
Data Migration
Microsoft Power BI
Microsoft Power Automate
Microsoft PowerApps
Microsoft 365 Copilot
Software Integration
Business Process Automation
JavaScript
TypeScript
Automated Workflow
Business Process Outsourcing IT Services
Data Transformation
SaaS Development
Full-Stack Development
Product Development
Customer Relationship Management
C#
Muhammad Hannan A.
Dubai, United Arab Emirates
$35/hr
5.0
2 jobs
I help businesses build scalable, secure, and modern web applications using cutting-edge .NET and JavaScript frameworks. With 8+ years of experience, I’ve delivered a number of projects ranging from enterprise SaaS platforms to high-performance APIs.
Why hire me?
Full-Stack Mastery:
Expert in .NET Core/C#, Angular, Vue.js, React, and cloud platforms (Azure/AWS).
Problem Solver:
Proven track record of fixing legacy systems, reducing API latency by 70%, and implementing CI/CD pipelines.
Client-Focused:
100% success rate on Upwork with 5-star reviews for clear communication and on-time delivery.
Let’s discuss how I can bring your project to life with clean, maintainable code and best practices.
ASP.NET
jQuery
HTML
CSS
ASP.NET MVC
C#
SQL
JavaScript
Vue.js
TypeScript
.NET Core
Entity Framework
NoSQL Database
React
Node.js
Fazeel M.
Dubai, United Arab Emirates
$25/hr
5.0
21 jobs
⭐️ Top Rated Plus - Top 1% of talent on Upwork
🕒 5,000+ hours on Upwork
✅ 8+ years of experience
✅ 50+ projects delivered
✅ Excelling in delivering Fortune 100-scale projects
8+ years of experience as a software engineer, and have worked at both small startups and large organizations. While I'm a proficient full-stack developer, my expertise is in building scalable Applications in (.NET Core, CQRS, Azure, API Services, ASP.NET MVC C#, MS SQL Server, VB.NET, EFCore, MongoDb, JIRA, Git, RabbitMQ, QuickBooks Integration, Micro Services, BitBucket, Unit Testing and DevOps).
One recent project involved migrating a large legacy ASP MVC app to ASP.NET Core SaaS app. Responsible for implementing:
- ASP.NET Core app with Core Identity for authentication and authorization
- I also implemented JWT Token based claims and authentication.
- REST API for WordPress clients
- EF Core code first with SQL server
- Background service for implementing long running tasks from API requests
- SignalR for notifying clients of the status of the long running tasks
- Stripe integration for one off card charging, and monthly subscriptions
Another large project for a financial services firm involves:
- working with a UI designer to redesign the UI (Bootstrap, jQuery, CSS, JS)
- next phase to redesign back end with new REST API for a new Angular client
Professionally, I have B.S (Software Engineering)
ASP.NET MVC
ASP.NET Core
MongoDB
C#
.NET Framework
Software Architecture & Design
ASP.NET Web API
Desktop Application
API Development
Web Hosting
Angular 6
Microsoft SQL Server Programming
.NET Core
RESTful API
SignalR
Danial I.
Dubai, United Arab Emirates
$25/hr
5.0
1 jobs
Aspire to work in a national or multi-national organization where I can work with all my skills.
Working environment motivates me to work hard and give a chance to enhance more skills.
Experience: ~8 years of experience as a Senior Software Engineer.
Key Skills:
• Hands on Experience on in Asp.Net MVC / Asp.Net Core / Asp.Net Core Razor / Asp.Net Signal R.
• Hands on Experience on in Web API Development in Asp.Net MVC / Asp.Net Core.
• Hands on Experience on in Developing and Documenting RESTful Services (Swagger).
• Hands on Experience on in Payment Gateway Integration (Reepay, MobilePay, BetalingsService,
Sagepay).
• Hands on Experience on in Developing Real Time Chat Module using SignalR.
• Hands on Experience on in Developing Multi-Tenant and Multi-Lingual System.
• Hands on Experience on in E-Commerce system (e.g., nopCommerce).
• Hands on Experience on in Develop Background Services (Windows Services, Hang fire, Azure Functions).
• Hands on Experience on in Integration of Firebase Push Notifications and Dynamic Links.
• Hands on Experience on in Integration of Twilio (SMS), SendGrid (Email) Service in Asp.Net.
• Hands on Experience on in Microsoft Azure (App Services, Functions, Active Directory, SQL Database,
Blob Storage, Cosmo DB, Application Insights, Deployments)
• Hands on Experience on in Frontend technologies like HTML, CSS, Java Script, jQuery Bootstrap, Angular.
• Hands on Experience on using nopCommerce domain.
• Experience of using Microsoft Cognitive Service (Translator).
• Good in relational Databases (MS SQL Server).
• Knowledge of Database Technologies (MS SQL Server, Entity Framework)
• Experience of integrating CI/CD Pipelines on DevOps.
• Familiar with TFS, Azure DevOps, Jira, GitLab and its features (Repos, Pipelines, Boards, Pull Requests)
• Experience of using testing tools like Postman, Fiddler and JMeter.
• Experience of write Unit Tests of Rest API’s using xUnit.Net.
• Hands on technical Experience on Android mobile app development.
• Development, Extensions, Integration & Customization.
• Good Leadership, mentoring and coaching skills.
• Excellent communication and interpersonal skills.
• Exceptional leadership qualities, a team player, self-motivated, adaptability and flexibility in working environment.
• Profound commitment and determination towards work.
• Capable to work under pressure situations and meet deadlines.
• Team player with strong analytical, logical, and problem-solving skills.
• Worked and Manage Teams as a Team Lead.
JavaScript
ASP.NET Web API
Microsoft SQL Server
ASP.NET
ASP.NET MVC
CSS
ASP.NET Core
Angular
Payment Gateway Integration
CI/CD
Azure App Service
Firebase
Microsoft Azure SQL Database
Microsoft PowerApps
Microsoft Power Automate
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