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$12/hr
100%
Job Success
$3K+ earned
Available now
Offers consultations
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Are you looking for a reliable ASP.NET Core developer who can build, optimize, and troubleshoot real-world applications?
I help businesses develop secure, scalable, and production-ready solutions using ASP.NET Core, Angular, SQL Server, and modern API integrations.
With 8+ years of professional experience, I specialize in backend development, REST APIs, third-party integrations, and performance optimization. Whether you need a new application, API integration, bug fixes, or system improvements, I can help deliver reliable and maintainable solutions.
🔹 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐈 𝐏𝐫𝐨𝐯𝐢𝐝𝐞
✔ ASP.NET Core Web API & MVC Development
✔ Angular Development & Frontend Enhancements
✔ SQL Server Design, Optimization & Performance Tuning
✔ API Integration & Troubleshooting
✔ Stripe Integration (Payments, Subscriptions, Webhooks)
✔ Third-Party Integrations (Twilio, SendGrid, Payment Gateways)
✔ Authentication & Authorization (JWT, Identity)
✔ Deployment & Production Support (IIS, Azure)
🔹 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
✔ ASP.NET Core, C#, Web API, MVC
✔ Angular, TypeScript, JavaScript
✔ SQL Server, EF Core, Dapper
✔ REST APIs & Third-Party Integrations
✔ Clean Architecture, CQRS, SOLID Principles
✔ Secure Application Design & Best Practices
I focus on delivering clean, maintainable, and scalable solutions that support long-term business growth. My approach combines strong technical expertise, clear communication, and a commitment to quality.
Available for ongoing development, API integrations, troubleshooting, and urgent fixes.
Send me a message with your requirements, and I'll be happy to discuss the best solution for your project.
Muhammad A.
has worked
.
$49/hr
100%
Job Success
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I design and build reliable backend systems where correctness, structure, and long-term maintainability matter — especially when AI / LLMs are part of the solution.
Most of my recent work focuses on C#/.NET systems integrated with AI / LLMs, where natural-language input must be translated into structured, validated, and deterministic outputs (JSON, objects, schemas) that plug directly into real applications — not chatbots or prompt-only demos.
What I help clients with
AI / LLM integrations that produce predictable, schema-driven outputs
C# / .NET backend architecture and service design
Turning vague or messy requirements into clean technical models
Separating AI reasoning from core business logic for reliability
Designing systems that are easy to test, debug, and extend
How I approach AI work
AI is treated as a controlled component, not a black box
Outputs are validated before entering the system
Fallbacks and error paths are designed upfront
Clean interfaces and strong typing on the .NET side
This keeps systems stable even as models or prompts evolve.
Background & credibility
20+ years building and delivering business-critical software systems
Top Rated on Upwork with 100% Job Success
Long-term client relationships built on trust and consistency
Strong foundation in .NET, backend architecture, and cloud systems (Azure & AWS)
Hands-on experience with AI / LLM-based solutions beyond simple prompts
Working together
For long-term engagements, I offer a 2-week free trial, so you can evaluate how I work before fully committing. I’m also happy to share demos or walk through relevant examples on a short call.
If you’re looking for someone who prioritizes clarity, correctness, and reliability over hype, I’d be glad to connect.
Mayank P.
has worked
.
$24.99/hr
100%
Job Success
$200K+ earned
Available now
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Senior .NET Developer with 10+ years of experience building scalable .NET applications, enterprise software, cloud-based systems, and high-performance backend solutions using C#, .NET Core, Azure, React, Angular, SQL Server, and modern software architecture.
I help startups, SaaS companies, and enterprise businesses build reliable .NET applications that are secure, maintainable, scalable, and designed for long-term growth. Whether you need a .NET Developer for a new application, modernization of an existing .NET system, backend API development, Azure cloud deployment, or full-stack development with React, I can help you build production-ready software with clean architecture and strong engineering practices.
I specialize in .NET development, C# development, .NET Core applications, enterprise .NET systems, backend development, cloud-based .NET solutions, and scalable software architecture.
If you are looking for a Senior .NET Developer who understands both business requirements and technical architecture, I would be glad to help.
WHAT I SPECIALIZE IN--
• .NET application development
• C# backend development
• REST API development using .NET
• Full-stack .NET development with React and Angular
• Cloud-native .NET applications on Azure
• Modernization of legacy .NET applications
• Multi-tenant SaaS application development
• Microservices architecture using .NET
• SQL Server and Entity Framework Core development
• Third-party API integrations in .NET applications
• Authentication and authorization systems
• Azure Active Directory integration
• Scalable backend systems using .NET and C#
• Distributed systems and event-driven architecture
• CI/CD pipelines for .NET projects
• Performance optimization for .NET applications
• Secure enterprise software development
CORE TECHNOLOGIES--
Backend:
C#, .NET, .NET Core, .NET 6, .NET 7, .NET 8, ASP.NET Core, Web API, REST APIs, GraphQL, Entity Framework Core, LINQ, Dapper
Frontend:
React, Angular, JavaScript, TypeScript, HTML, CSS, Bootstrap, Blazor
Database:
SQL Server, PostgreSQL, MySQL, MongoDB
Cloud & DevOps:
Microsoft Azure, Azure App Services, Azure Functions, Azure DevOps, Azure Service Bus, Docker, Kubernetes, AWS, CI/CD Pipelines
Architecture & Engineering:
Clean Architecture, Domain-Driven Design, CQRS, SOLID Principles, Repository Pattern, Microservices Architecture
Authentication & Security:
JWT Authentication, OAuth2, Azure AD, Role-Based Access Control, Secure API Development
WHY CLIENTS HIRE ME--
Clients hire me because I focus on building reliable .NET applications that are scalable, maintainable, and production-ready.
I do not just write code. I help businesses build strong technical foundations using modern .NET development practices and scalable architecture decisions.
When you work with me, you get:
• Clean and maintainable .NET code
• Scalable backend architecture
• Strong C# engineering practices
• Well-structured and documented codebases
• Secure authentication and authorization systems
• Enterprise-grade software development standards
• Long-term maintainable .NET applications
I also use modern AI-assisted development workflows with Cursor and Claude to improve development speed, accelerate debugging, reduce repetitive work, and maintain high-quality code standards across .NET projects.
PROJECT EXPERIENCE--
✔ Property Management SaaS Platform
Developed a scalable .NET application using .NET Core, React, Angular, Azure, SQL Server, and multi-tenant architecture. Built role-based dashboards, reporting systems, tenant management modules, and real-time features for property management operations.
✔ Employee PDP Management System
Developed employee planning modules, approval systems, reporting, and secure access management.
✔ School Management Platform
Developed a complete .NET Core application with authentication systems, teacher portals, student management, scheduling modules, admin dashboards, and reporting systems using MySQL and Clean Architecture principles.
✔ Enterprise Internal Systems
Built and maintained multiple enterprise .NET applications integrated with Azure AD, SharePoint, HR platforms, insurance systems, and third-party APIs.
✔ API Integration & Backend Systems
Integrated Stripe, PayPal, CRMs, external services, and enterprise APIs into .NET applications with secure authentication and scalable architecture.
INDUSTRIES I HAVE WORKED WITH--
• SaaS & Product Development
• Property Management & Real Estate
• HR & Workforce Management
• Education Technology
• Insurance Software
• Enterprise Internal Systems
• Business Automation Platforms
Whether you need a scalable .NET application, a modern .NET Core backend, enterprise software built with C#, Azure-based cloud systems, or full-stack development with React and .NET, I can help you build a reliable and maintainable solution.
Send me a message with your project requirements, technical challenges, or business goals, and I will help you define the best approach.
Sunil K.
has worked
.
Associated with
LnP Infotech Private Limited
$22/hr
99%
Job Success
$100K+ earned
Offers consultations
Start of list.
End of list.
13+ yrs of development experience | Flawless Coding | On Time | Quality Driven Delivery| Excellent Communication Skills | Round the Clock Availability | Product development | Leadership to drive results.
I create business grade web / mobile app solutions and strive to deliver software of brilliant quality using the SOLID principles, TDD approach, agile methods for rapid iteration.
➤ What my Upwork client says:
==========================
✅ "Great work on our backend (API) nodejs application and working with the AWS infrastructure and Mobile apps (iOS and Android). Looking forward to working with Krish and SentientGeeks team in the future."
✅"The Value provided by Krish and his team is absolutely incredible. We selected them after interviewing several agencies for a high impact project. They have gone above and beyond to solve all the problems, great communication and sincerity to stick to deadlines and keeping project on track. Great technical skills, they delivered a high quality solution for mobile and web app, got the apps approved from iOS and google play."
➤ Why Me?:
===========
★ Besides my technical exposure, I believe in seamless communication.
★ Upwork Top Rated Plus Developer with a proven track record.
★ I deliver what I commit. I prefer to discuss the challenges/issues upfront.
★ quality care and understand the balance between quality and quantity.
★ 100% Project Success on Upwork
➤ Technical Exposure:
===================
✅ Asp.Net, Asp.Net Core, .Net MVC, ASP.NET Web API, C#
✅ Experience with the Microsoft Power Platform like, Microsoft Power Automate, Power BI.
✅ Frontend: Angular (TypeScript), React,
✅ Backend: Python, NodeJS, .NET Core (Web API).
✅ State Management: Redux, NgRx, MobX etc
✅ Database: MongoDB, Firebase, MYSQL, SQL Server, PostgreSQL, Oracle
✅ Unit Test: Jasmine/Mocha, Enzyme/Zest, XUnit, NUnit
✅ Cloud: AWS (S3 bucket, Lambda, Elastic Beanstalk, ACF, EC2, AWS RDS, etc.), GCP, Azure, Vercel.
✅DevOps: CI/CD Pipelines, Github Repos, Test Plan, Build Strategy, Artifacts with Python & Nuget Package feeds, etc.
✅ Source Control: Github, GitLab, Bitbucket, TFS
✅ Docker: Dockerized a couple of web applications using Jenkins & and Kubernetes.
✅ Principles: SOLID, DRY, KISS
✅ Third-Party API: SMS & IVR Gateways (Twilio, Esendex), Payment Gateways (PayPal, Stripe, Authorize.NET, Google Checkout), Chat API (WebRtc, Quickblox), Social Media (Facebook, Twitter, LinkedIn)
✅ AI Expertise:
==============
★Generative AI (e.g.GPT-3, ChatGPT, OpenAI)
★ Natural Language Processing & Text Analysis - chat-bots, text parsing and information extraction, full-text search,
★ Machine learning - object detection and recognition, classification, clustering, forecasting
★ AI backend development (FastAPI, Docker, Gunicorn)
★ Time Series Forecasting: site traffic forecasting, churn prediction, insurance value estimation
★ Machine Learning frameworks such as Tensorflow, PyTorch, Sklearn, and Spark MLlib
★ Design and build Machine Learning and AI models
★ Deploy trained models in Production environments
✅Our process includes:
====================
1. Project Discovery: In this, we will schedule a call or chat session to understand the problem statement or the business/technology problem, you are trying to solve. We will provide you with free consulting and guide you on the requirement refinement, Business Model, Limitations, Ball-Bark Estimations, Our Project Development Methodology/Tools/Technologies, and Team, etc.
2. Technical Solution & Project Scope: Since now most of the requirement is captured, and we have an idea of what you are looking at. Based on our discussion, we will provide you with:
★ Detailed scope of work
★ Technical Details
★ Timeliness & Cost Breakdown
★ Project Milestones
★ Legal Agreement
3. Project Execution: Once the project is finalized and kickoff is done, we will start the project execution work using Agile/Scrum methodology. Our project execution steps include:
★ Wireframing & UI/UX Design Phase: As part of this process, our clients work with our award-winning UI/UX design team to bring the web/App concept to live.
★ Development (Coding) Phase: We share the regular web Links or builds for you to see the progress of your website and Mobile App projects.
★ Quality Assurance Phase: This includes UI/UX, Beta, and User Acceptance Testing.
★ Deployment and Maintenance: Once the app is live, we will provide you with free 30 Days of Maintenance within the scope.
✅Core Competency:
===================
- Microsoft platforms
-AI, ML solution
-MERN Stack Developer
-MEAN stack Developer
-Hybrid App Developer
-Web App Developer
-Mobile App Developer
-Cross-platform app Developer
-iOS Developer
-Android Developer
-Firebase Developer
-Python
I trust this description provides clarity. Eagerly awaiting our discussion.
Associated with
SentientGeeks
$3M+
earned
$25/hr
100%
Job Success
$40K+ earned
Start of list.
End of list.
🌟 Senior Full Stack Engineer | 🤖 AI-Agents Developer | 🧩 Product Engineer
⏱️ 7+ Years of Engineering Experience: Architecting and building robust, scalable web applications.
🤖 AI-First Workflow: Shipping enterprise-grade products faster and smarter by leveraging advanced AI agents.
🏦 Fintech Foundation: Deeply specialized in building secure, high-stakes financial systems.
🧩 Versatile Domain Expertise: Delivering complex business solutions across Retail POS, Supply Chain, Risk Management, and Recruiting platforms.
💼 Domain Expertise & Featured Portfolio
💰 Fintech & Financial Systems
Deep expertise in building secure, high-volume financial platforms. My experience includes ensuring strict regulatory compliance (including SAMA and ZATCA standards), architecting robust account lifecycle management systems, and managing massive transaction throughput—such as successfully clearing a 4.4 million invoice backlog.
🔗 Featured Projects: Hala | Jahez | Azm Fintech
🔐 Digital Identity Management
Building secure, scalable identity and smart workflow automation solutions to manage complex user access, data configurations, and business logic.
🔗 Featured Project: Diyar ME
🛒 Retail & POS Management
Developing comprehensive systems that handle day-to-day operations, multi-location synchronization, and complex sales workflows. I have hands-on experience redesigning POS partial reconciliation architectures to guarantee absolute ledger accuracy.
🔗 Featured Project: Diyar ME
📦 Supply Chain & Risk Management
Architecting data-heavy, enterprise-grade platforms to map complex logistics, monitor risk events, and optimize operational flows.
🔗 Featured Projects: Z2Data | NUPCO
🏥 Recruiting, Staffing & Medical Apps
Creating adaptable enterprise portals and applications tailored to the specific operational workflows of the HR and healthcare sectors.
🔗 Featured Project: Linxxsoft
🚀 Why Choose Me? The AI-Augmented Advantage
⚡ AI-Powered Efficiency: I actively integrate AI agents into my daily development workflow to multiply my output. By leveraging Cursor alongside advanced LLMs like GPT and Claude, I accelerate rapid prototyping, automate boilerplate generation, and solve complex architectural bottlenecks with precision.
🛡️ Domain Adaptability: Because I am used to the strict security, performance, and reconciliation demands of enterprise Fintech, I bring that same rigorous standard to every project I touch, regardless of the industry.
🎯 End-to-End Ownership: From the first architectural draft to the final Azure DevOps CI/CD pipeline deployment, I take full responsibility for the system's performance, security, and user experience.
🛠️ Core Technical Expertise
⚙️ .NET Mastery: Proficient across the entire .NET stack, specializing in C#, ASP.NET Core, and the classic .NET Framework. Expert in designing and deploying scalable Microservices architectures and robust Web APIs.
🗄️ Database & Backend Agility: Deep expertise in SQL database management, complex querying, data manipulation, and high-volume transaction reconciliation. Implementation of Elasticsearch for high-performance search capabilities.
💻 Front-End Proficiency: Crafting responsive, intuitive user interfaces using JavaScript, Angular, and jQuery, while leveraging ASP.NET MVC for dynamic, data-driven applications.
☁️ DevOps & Deployment: Building CI/CD pipelines using Azure DevOps for automated deployments, and utilizing Docker for containerization to ensure consistency across all environments.
🤝 Let's build something great together. Connect with me, and let's turn your ideas into a high-performing digital reality.
Mostafa Y.
has worked
.
$25/hr
100%
Job Success
Available now
Start of list.
End of list.
⭐⭐⭐⭐⭐ Top Rated | 10+ Years Experience ⭐⭐⭐⭐⭐
I help businesses fix, optimize, and scale desktop applications and databases—especially ERP systems, accounting integrations, and legacy software.
If your application is slow, your database is underperforming, or your system requires manual work, I can turn it into a fast, reliable, and automated solution.
🔥 What I specialize in:
C# / VB.NET Desktop Application Development (WinForms, DevExpress)
SQL Server performance tuning & query optimization
ERP & Accounting Systems (Inventory, GST, Reporting)
QuickBooks Desktop Integration (QB SDK, automation, sync)
Fixing slow applications caused by database or code issues
Excel/VBA → .NET Application or DLL Conversion
API integrations & system synchronization
Auto-updaters (Application + Database migration)
Industrial systems (Serial Port, Bluetooth, real-time control)
💡 Proven real-world experience:
✔ ERP system for diamond industry (high-volume transactions)
✔ Optimized SQL performance for business-critical systems
✔ ZATCA Phase 2 e-invoicing system (Saudi compliance)
✔ Real-time monitoring dashboard (15+ manufacturing plants)
✔ Coffee roaster control software (hardware + real-time system)
✔ QuickBooks automated order & invoice sync
✔ Bulk email automation system (Google API integration)
✔ Excel VBA converted to scalable VB.NET DLL
✔ API-based auto-update system with database upgrades
⚡ Why clients hire me:
I solve both application and database problems (end-to-end)
Strong experience with real-world business systems (ERP)
I quickly identify performance bottlenecks and fix them
Focus on speed, stability, and long-term scalability
🛠️ Core Technologies:
C#, VB.NET, WinForms, DevExpress, SQL Server, T-SQL, APIs, QB SDK
🎯 What you can expect:
✔ Faster applications and optimized database performance
✔ Clean, maintainable, production-ready code
✔ Reliable and scalable system architecture
✔ Clear communication and fast turnaround
If your system is slow, outdated, or needs automation—I can quickly analyze, optimize, and deliver a stable solution.
🎥 I can also share working demos of similar systems.
Nayan G.
has worked
.
Associated with
NG Codecraft
$60/hr
100%
Job Success
$90K+ earned
Available now
Start of list.
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Senior Software Developer and Industrial ML Specialist with over 20 years of experience. In my previous role I built mission critical software, including the control systems (SCADA) used to run pipelines, LRT systems, and power plants. Since then I co-founded a startup to build the ML to augment those systems, optimizing industrial systems to reduce power cost and increase throughput, and building failure prediction and detection systems to avoid costly downtime and repairs.
My industrial background gives me the experience needed to take software past "production ready" to the five-nine reliability needed when a single glitch can take down a multi-billion dollar production system, or prevent life-saving infrastructure from running in an emergency.
As an ML engineer I went back to those same systems with an eye towards the hidden opportunities buried in the raw data. This involved dealing with the complexities of messy real world data such as: missing or malfunctioning instruments, unknown time offsets, unlabelled data, missing logs, and clients with a very different view of the systems. I handled the full lifecycle: data validation and cleaning, feature engineering, model development, application design, and cloud deployment.
As a developer I specialize in C/C++, Python, and JavaScript, and am a skilled full-stack developer with strong Linux/Unix system administration skills. My ML specializes in time series, regression, and categorization, but I have built solutions in many other areas including Computer Vision, Reinforcement Learning, and Large Language Models.
Having co-founded and led a startup I have a strong eye for evaluating business proposals and focusing on what's needed for a successful MVP. For instance, I know when a particular piece of functionally is critical to the value proposition, and thus needs to be absolutely flawless. And I know which bits of functionality just need to be done as quickly and cheaply as possible so the prototype can get out the door.
Aaron L.
has worked
.
$30/hr
100%
Job Success
$7K+ earned
Available now
Offers consultations
Start of list.
End of list.
𝐄𝐱𝐩𝐞𝐫𝐭 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with 7+ 𝘆𝗲𝗮𝗿𝘀 building scalable backend systems, AI-powered platforms, and enterprise applications designed for performance, maintainability, and long-term growth.
My core is 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞, 𝐂#, 𝐏𝐲𝐭𝐡𝐨𝐧, 𝐅𝐚𝐬𝐭𝐀𝐏𝐈, and backend architecture built around scalability and clean system design. I also work across AI infrastructure, LLM integrations, and modern API-driven systems where backend reliability directly impacts business operations.
I've delivered SaaS platforms, ERP systems, AI-powered applications, RAG pipelines, enterprise APIs, and multi-service architectures where clean backend engineering and structured system design are critical for scaling successfully. Every system is built production-ready, optimized for performance, and designed to evolve without becoming difficult to maintain.
━━━━━━━━━━━━━━━━━━━━━━
𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝
━━━━━━━━━━━━━━━━━━━━━━
𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 & 𝐀𝐏𝐈 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
ASP.NET Core, C#, Python, FastAPI, Django, Flask, REST APIs, microservices, async processing, authentication systems, business logic architecture, and scalable backend infrastructure.
𝐀𝐈/𝐌𝐋 & 𝐋𝐋𝐌 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
LLM integrations, AI agents, RAG pipelines, NLP systems, chatbots, semantic search, recommendation systems, and intelligent backend services powered by OpenAI and modern AI frameworks.
𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 & 𝐄𝐑𝐏 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬
ERP systems, enterprise APIs, workflow automation, multi-service integrations, reporting systems, and backend platforms designed for operational scalability and reliability.
𝐉𝐚𝐯𝐚 & 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
Java, Spring Boot, Spring MVC, Spring WebFlux, Hibernate, JPA, JSON processing, messaging services, and enterprise backend application development.
𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐒𝐲𝐬𝐭𝐞𝐦 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞
PostgreSQL, MySQL, MongoDB, query optimization, indexing strategies, scalable schema design, caching systems, and backend performance tuning.
𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬
AWS, Azure, Docker, CI/CD pipelines, cloud-native deployment, infrastructure scaling, containerized services, and production environment management.
'━━━━━━━━━━━━━━━━━━━━━━
𝐁𝐞𝐬𝐭 𝐅𝐢𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬
━━━━━━━━━━━━━━━━━━━━━━
Backend-heavy SaaS platforms and enterprise systems
AI-powered products with LLM and RAG integrations
ERP and workflow automation systems
High-performance APIs and microservices
Cloud-native backend infrastructure
Systems requiring scalability, optimization, or modernization
━━━━━━━━━━━━━━━━━━━━━━
𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤
━━━━━━━━━━━━━━━━━━━━━━
I focus on backend systems that are structured properly from the start architecture, APIs, databases, and infrastructure designed together instead of patched over time.
Clear communication, predictable execution, and maintainable engineering practices are part of every project. I work closely with startups, SaaS teams, and enterprise clients to deliver backend systems that continue performing under real production load.
𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 → 𝐀𝐏𝐈 𝐃𝐞𝐬𝐢𝐠𝐧 → 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐄𝐱𝐞𝐜𝐮𝐭𝐢𝐨𝐧 → 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 → 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭
━━━━━━━━━━━━━━━━━━━━━━
If you need an 𝐄𝐱𝐩𝐞𝐫𝐭 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 who can build scalable APIs, AI-powered systems, and production-grade backend infrastructure, let’s connect.
ASP.NET Core | ASP.NET Web API | C# | .NET | Python | FastAPI | Django | Flask | REST APIs | Microservices | Backend Development | API Architecture | AI Integration | Machine Learning | LLM Applications | AI Agents | RAG Systems | Chatbots | NLP | OpenAI API | Semantic Search | Recommendation Systems | Java | Spring Boot | Spring MVC | Spring WebFlux | Hibernate | JPA | PostgreSQL | MySQL | MongoDB | Docker | AWS | Azure | CI/CD | Cloud-Native Applications | ERP Systems | SaaS Platforms | Workflow Automation | Enterprise Applications | System Design | Scalable Architecture | Async APIs | Software Architecture
Nabeel S.
has worked
.
Montenegro
$75/hr
100%
Job Success
$700K+ earned
Available now
Start of list.
End of list.
I’m a Senior Software Architect and Developer with 20 years of expertise in C# and .NET, leading dev teams in producing high quality business applications and helping businesses transform legacy systems into robust, scalable, high-performance software solutions.
Core Competencies:
✅ Software Architecture: Deep expertise in designing scalable, maintainable systems following SOLID principles and leveraging proven Design Patterns.
✅ Full-Stack .NET Development: Skilled with .NET Framework (since 1.1) and .NET Core, including
ASP.NET (MVC, Web API), WinForms, WPF and WCF.
✅ Microservices & Cloud: Architecting modern cloud-native solutions (Azure, Docker, Kubernetes).
✅ Technical Leadership: Proven experience leading development teams, practicing Agile methodologies, and managing end-to-end CI/CD processes (Azure DevOps, Jenkins, TeamCity, AWS CodeDeploy, BitBucket Pipelines).
✅ Quality and Maintainability: Expert in writing clean, testable code (Unit testing, Integration testing, TDD).
My Background:
Started my career at industry leaders including Microsoft, DHI, and T-Com, gaining diverse perspectives across enterprise-grade software development.
Transitioned successfully into independent contracting (10+ years), collaborating efficiently with global remote teams to deliver mission-critical projects.
I pride myself on clear communication, delivering measurable business outcomes, and consistently staying ahead with modern software engineering practices.
Let’s discuss how I can help your business achieve exceptional software solutions.
Ljubomir B.
has worked
.
$25/hr
100%
Job Success
$300K+ earned
Available now
Start of list.
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Over 12+ years of experience in the IT industry, involved in Software Design, Analysis, Development, Integration, and Testing at the client and server sides in various domains such as transport, finance, fintech, real estate, eCommerce, etc.
My Skills:
• Experience in .NET Framework/Core
• Experience with C# 14 and .NET 9 and earlier versions
• Experience in React, Angular, HTML5, JavaScript, and CSS
• Windows desktop application development experience
• Experience with Windows and WCF services development
• Experience in Microservice API and REST services, and understanding of containers
• Experience with WPF GUI Modular application development
• Practical experience using MVVM design pattern and DevExpress WPF controls
• Exposure in multi-process .NET applications
• Relational database experience MySQL & SQL Server
• Understanding of message queues and middleware.
• Experience with SDLC tools, like Jira, bitbucket, bamboo Confluence, GIT source control system
• XAML-based user interface development experience (e.g., WinUI 3, UWP, WPF)
• Experience with LINQ to XML
• Understanding of XML schemas (XSD)
• Attentive to user feedback
• Ability to work independently
• Git version control
• Solid understanding of testing principles and high-quality software
• Excellent written and verbal English communication skills.
Worked in an Agile team of .NET developers for a fast-paced software development firm.
Worked on 10+ SQL database design projects. Improved speed to complete projects by 35% in 15 weeks.
Developed and provided maintenance for 20+ .NET websites/applications, using ASP.NET MVC, jQuery, HTML, and CSS.
Achieved 100% client satisfaction and on-time completion.
Created remote coding and testing environment with bash and Docker scripts.
Ashu S.
has worked
.
Associated with
Impinge Software Solutions LLP
$10M+
earned