Trusted by 2000+ Happy Clients, Including Fortune 500 Companies
.NET Development Services Our Developers Provide
Hire .NET Core developers who contribute across architecture and backend engineering, including AI integrations, cloud deployment, modernization, testing, and production support.
.NET Consulting & Architecture
Before making any important decisions, get professional help. The consulting service includes architectural review, .NET strategy, application migration, cloud architecture, API strategy, database architecture, performance, security, and technical debt.
ASP.NET Core Web Application Development
Develop scalable and maintainable web applications using ASP.NET Core. Build business applications, customer portals, SaaS applications, enterprise solutions, administration systems, workflow applications, and data platforms.
.NET 10 Application Development
Develop applications using the latest LTS release of .NET. Features provided include ASP.NET Core 10, C# 14, Entity Framework Core 10, Blazor, Minimal APIs, gRPC, SignalR, Native AOT, and Cloud-native capabilities. Consider the versioning approach before development, given the long support period.
Enterprise .NET Application Development
Build business-critical software that is designed to be secure, maintainable, scalable, and integrated. Business enterprise capabilities include role-based access, single sign-on, enterprise APIs, workflow management, reporting, audit logs, data integration, alerts, and cloud infrastructure.
.NET SaaS & Multi-Tenant Development
Create multi-tenant, subscription-based platforms incorporating user management, roles, subscriptions, billing, notifications, API support, analytics, administrative functions, and cloud infrastructure. Develop customized SaaS architecture using either database-sharing or database-per-tenant approaches for isolation, configuration, authorization, and usage-based security and scalability needs.
ASP.NET Core REST & Minimal API Development
Develop RESTful API applications using ASP.NET Core for web, mobile, SaaS, enterprise, partner, and IoT frameworks, with versioning, validation, authentication, authorization, pagination, filtering, rate limiting, and OpenAPI documentation. Leverage ASP.NET Core Minimal APIs to create lightweight microservices, backend-for-frontend services, and serverless HTTP endpoints.
.NET GraphQL & gRPC Development
Create flexible API layers for complex data-based applications by using queries, mutations, subscriptions, authentication, authorization, pagination, data loaders, and performance optimization. Create efficient inter-service communication via strongly typed gRPC contracts and low-latency connections for internal microservices, distributed systems, high-throughput services, and polyglot backends.
SignalR Real-Time Application Development
Create instant real-time features through ASP.NET Core SignalR. Possible applications include chat, live notifications, operational dashboards, collaborative services, tracking, status updates, stock market data, and other monitoring systems.
.NET Microservices Development
Develop independent services when the business value justifies the added complexity. These capabilities include ASP.NET Core development services, REST, gRPC, API gateways, messaging, Redis, Docker, Kubernetes, and distributed tracing.
Event-Driven .NET Application Development
Develop design applications for asynchronous reactions to business and system events using Azure Service Bus, Event Grid, RabbitMQ, Apache Kafka, Amazon SQS/SNS, and MassTransit. Suitable for order management, workflow management, notification services, integration solutions, and background processing applications.
Cloud-Native .NET Development
Deploy and develop software via cloud-managed services on Azure, AWS, and Google Cloud. Infrastructure capabilities include container services, serverless computing, managed databases, messaging, and observability.
Azure .NET Development
Combine .NET with Microsoft's cloud ecosystem using Azure App Service, Azure Functions, Azure SQL, Cosmos DB, and Azure Storage. Solutions leverage Service Bus, Event Grid, Key Vault, Application Insights, AKS, and Microsoft Entra ID.
AI-Powered .NET Core Solutions
Integrate advanced artificial intelligence and machine learning technologies directly into your apps. AI assistants, enterprise semantic search, smart document handling, predictive analytics, intelligent automation, and recommendation engines.
.NET Core Support & Maintenance
Guarantee stability, security, and optimal performance after product deployment for long-term use. Services include monitoring, troubleshooting, security updates, performance tuning, dependency management, and SLA-based production support.
Top .NET Core Developers For Hire Ready To Join Your In-House Team
Handpicked, pre-vetted .NET developer profiles matched to the exact stack and seniority your project needs.
.NET Core Developer
Tech Stack:
C#, ASP.NET Core, .NET, Entity Framework Core, REST APIs, SQL Server, LINQ, Git, Azure, Dependency Injection, Web API, Unit Testing.
Best-Fit Use Case:
Building business applications, CRUD systems, APIs, admin portals, authentication, database-driven features, bug fixing, and ongoing .NET development.
Senior .NET Developer
Tech Stack:
.NET 10, ASP.NET Core, C#, EF Core, Azure, Blazor, SignalR, gRPC, Redis, Docker, CI/CD, Clean Architecture, Microservices, Performance optimization, Automated testing.
Best-Fit Use Case:
Enterprise systems, SaaS applications, scalable APIs, cloud-native platforms, real-time systems, application modernization, and complex integrations.
Lead .NET Developer / Solution Architect
Tech Stack:
.NET Architecture, ASP.NET Core, Azure, Microservices, Kubernetes, Service Bus, Event-Driven Architecture, Blazor, AI, DevOps, Enterprise solution architecture, Distributed systems, Cloud-native design, Security architecture, Performance engineering, Modernization strategy, Engineering leadership.
Best-Fit Use Case:
Enterprise modernization, distributed systems, cloud transformation, high-volume applications, multi-team platforms, architecture governance, and technical leadership.
Hire .NET Core Developers on Flexible Engagement Models
Choose a hiring model aligned with your roadmap, internal engineering capacity, project duration, and technical requirements.
Full-Time Monthly .NET Developer Hire
Get a dedicated .NET developer working against your agreed product or application roadmap.
Hours: 180 hours / 4 weeks
Minimum Duration: 1 Month
Methodology: Agile / SCRUM
Communication: Email, Chat, Calls, Video Meetings, Project Management Tools
Best For: Long-term .NET development, enterprise software, SaaS products, application modernization, dedicated engineering teams, and continuous feature development.
Hourly .NET Developer Hire
Add flexible .NET expertise for targeted development or modernization requirements.
Hours: Flexible based on project needs
Minimum Duration: 1 Month
Methodology: Agile / SCRUM
Communication: Email, Chat, Calls, Project Management Tools
Best For: Feature enhancements, bug fixing, API development, .NET upgrades, performance optimization, Azure development, and technical consulting.
Benefits of Hiring .NET Core Developers from CMARIX
- Access pre-vetted in-house developers experienced across modern .NET, C#,
- Build applications using the current .NET ecosystem while retaining
- Hire developers experienced with .NET 10 LTS for new long-term
- Develop secure REST, GraphQL, gRPC, and real-time APIs for web, mobile,
- Build structured enterprise systems using dependency injection,
- Build cloud-native .NET solutions using Microsoft Azure, AWS, or Google
- Develop event-driven and distributed systems using Azure Service Bus,
- Build interactive C# web experiences using Blazor.
- Create real-time applications using ASP.NET Core SignalR and WebSockets.
- Build data-driven applications with EF Core, LINQ, and SQL Server,
- Modernize .NET Framework and outdated .NET Core systems through phased
- Leverage CMARIX's existing experience across 200+ application migrations
- Target application-response improvements of up to 35% across suitable
- Build scalable architectures designed around 10x–100x growth scenarios.
- Containerize applications using Docker and orchestrate workloads through
- Automate infrastructure and deployment through Azure DevOps, GitHub
- Integrate Azure OpenAI, OpenAI APIs, Semantic Kernel, ML.NET, ONNX
- Implement enterprise identity using ASP.NET Core Identity, Microsoft
- Work directly with your selected .NET developers throughout the
- Maintain code visibility through Git repositories, pull requests, code
- Retain source-code ownership and intellectual-property rights according
Why Hire .NET Core Developers from CMARIX?
Hiring dedicated .NET Core developers from CMARIX gives your business customized, high-performance enterprise software development solutions that enable scalability and operational proficiency. Our veteran engineering team turns complex backend requirements into secure, cloud-native ecosystem integrations while guaranteeing strict compliance with modern development standards.
Modern .NET Expertise, Not Legacy-Only Skills
Although many buyers still search for “.NET Core developers,” modern development now happens across the unified .NET platform. Our developers can work with .NET 10, ASP.NET Core, EF Core, C#, Blazor, .NET MAUI, and Cloud-native .NET, while also supporting legacy applications that need modernization.
C# & ASP.NET Core Expertise
Build maintainable backend systems with dependency injection, middleware, async programming, strong typing, APIs, background services, logging, and configuration.
Microsoft Azure Expertise
Our .NET developers can integrate with Azure services for applications, serverless, databases, messaging, identity, monitoring, containers, and storage.
Enterprise Integration Expertise
Connect .NET applications with internal and third-party technology ecosystems including ERP, CRM, identity platforms, payment systems, data platforms, APIs, and messaging systems.
Architecture Designed for Growth
Scalability strategies can include horizontal scaling, caching, load balancing, containers, distributed systems, database optimization, and asynchronous processing.
High Workload-Growth Scenario Planning
For suitable enterprise platforms, we can plan architectures for 10x–100x workload growth, subject to infrastructure and performance validation.
Legacy Modernization Experience
CMARIX's current .NET positioning includes experience across 200+ application migration and modernization engagements. Our approach emphasizes staged modernization rather than rewriting stable systems without a measurable reason.
Technical Project Management
Applicable dedicated engagements include Technical Project Manager support without an additional project-management charge. Support can include sprint planning, requirement tracking, technical coordination, delivery visibility, risk management, and stakeholder communication.
Direct & Transparent Collaboration
Maintain visibility through direct developer communication, sprint boards, Git repositories, pull requests, code reviews, build pipelines, and demo releases.
How CMARIX Vets .NET Core Developers Before You Interview Them
Professional .NET engineering requires more than knowledge of C# syntax and ASP.NET controllers. Our screening evaluates developers across C#, modern .NET, ASP.NET Core, databases, APIs, architecture, concurrency, security, cloud, testing, performance, and production engineering. To maintain an elite technical standard, we run all in-house resources through a multi-stage filtering process before adding them to active client shortlists.
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.NET Role & Project Fit
We first evaluate candidates against your requirements, including .NET version, ASP.NET Core, C#, application architecture, databases, cloud platform, frontend requirements, APIs, industry experience, and required seniority.
Deliverables: Matched .NET developer profiles aligned with your application requirements.
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C# & .NET Technical Assessment
We can evaluate developers on C# fundamentals, object-oriented programming, generics, LINQ, delegates, events, records, pattern matching, nullable reference types, exception handling, collections, and memory fundamentals.
Deliverables: Technical profile validation, core coding skill assessment, and a C# syntax and .NET runtime proficiency report.
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ASP.NET Core Assessment
The technical assessment covers middleware, dependency injection, configuration, logging, routing, controllers, minimal APIs, filters, validation, background services, authentication, and authorization. Senior developers need to be familiar with lifecycle-aware service lifetimes and cross-cutting concerns.
Deliverables: Web framework standard verification, pipeline configuration audit, and request-lifecycle stability validation.
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Entity Framework Core & Database Assessment
Assess developers on EF Core, LINQ queries, relationships, migrations, transactions, query optimization, indexing, change tracking, concurrency, raw SQL, and database design. Senior developers should understand SQL and database performance rather than relying solely on ORM abstraction.
Deliverables: Data layer integrity check, local and cloud database query-efficiency evaluation, and ORM abstraction and tracking-pattern audit.
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Architecture & Scalability Assessment
Evaluating senior candidates involves assessing their knowledge of Clean Architecture, layered architecture, modular monoliths, microservices, DDD (Domain Driven Design), CQRS (where applicable), event-driven systems, caching, messaging, and distributed systems. Do not automatically use microservices depending upon application complexity.
Deliverables: Enterprise architecture integrity check, distributed system patterns evaluation, and multi-project modularization audit.
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Cloud, DevOps & Deployment Assessment
Assessment can include Azure, AWS, Docker, Kubernetes, Azure App Service, Azure Functions, AKS, Infrastructure as Code, Azure DevOps, GitHub Actions, monitoring, and deployment strategies.
Deliverables: Cloud ecosystem integration matrix, containerization configuration review, and CI/CD platform deployment report.
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Security, Testing & Performance Assessment
Developers can be evaluated on xUnit, NUnit, MSTest, Moq / NSubstitute, OWASP Top 10, OAuth, OpenID Connect, JWT, authorization, performance profiling, caching, logging, and static analysis.
Deliverables: Automated test suite coverage report, profiler memory and CPU diagnostic audit, and security compliance and identity token storage review.
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Communication & Client Interview
Shortlisted developers are assessed for requirement understanding, technical communication, problem-solving, ownership, documentation, agile collaboration, and remote teamwork. You can interview the shortlisted developers directly before making a final selection.
Deliverables: Communication assessment, collaboration and ownership evaluation, and workflow alignment report.
Hire Professional .NET Core Developers in 4 Quick Steps
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1. Share Your Requirements
Describe your existing application, preferred .NET framework version, architectural patterns, cloud environment, database architecture, integration capabilities, legacy modernization needs, time frame for development, and seniority level of the developers needed.
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2. Review Matched .NET Developer Profiles
We shortlist candidates based on their proficiency in C#, ASP.NET Core, experience with web and enterprise applications, familiarity with Azure and cloud ecosystems, domain expertise in architecture, and availability.
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3. Interview & Select Developers
Interviews shortlisted .NET developers directly to evaluate their technical framework expertise, complex architecture thinking, practical problem-solving capabilities, communication skills, relevant project delivery experience, and overall team compatibility.
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4. Onboard & Start Development
Align source control, the development environment, the cloud platform, security, communication, the sprint process, and priorities before development begins.
How Our .NET Developers Maintain Code Quality
C# & .NET Coding Best Practices
- Follow consistent C# coding conventions.
- Enable nullable reference types where appropriate.
- Apply SOLID principles where they improve maintainability.
- Use dependency injection appropriately and keep classes/methods focused.
- Apply asynchronous APIs for I/O-bound operations.
- Maintain structured error handling using Roslyn/static analysis.
Architecture & Database Quality
- Clean, Layered, vertical slice architecture; modular monoliths.
- Microservices, Domain-driven design.
- Architecture selected by complexity, not automatically maximizing abstraction.
- Query efficiency, indexing, transaction boundaries, caching.
- EF Core query behavior, N+1 queries, database concurrency.
- Connection usage, pagination.
Automated Testing & Security
- Testing: xUnit, NUnit, MSTest, Moq, NSubstitute.
- Integration tests, API tests, Playwright, Selenium.
- Authentication, Role and policy authorization, OAuth, OpenID Connect.
- Secure cookies, CSRF protection, input validation, secure headers.
- API rate limiting, secret management.
Logging, Observability & CI/CD
- Serilog, OpenTelemetry, Azure Application Insights.
- Structured logging, distributed tracing, metrics, alerts.
- Pipelines: Automated builds, unit/integration tests, static analysis.
- Dependency scanning, staging deployments, approval gates, rollbacks.
A global technology partner — proudly delivering Microsoft Technologies.
Modernize Your Product with our well-versed .Net Core Developers team!Our Stellar Projects
A Glimpse of Our Work
Our Client-Centric Principles That Drive .NET Core Development Success
At CMARIX, we engineer high-performing .NET Core backend ecosystems tailored to your business processes and strategy-oriented business goals. We go beyond basic development, delivering highly optimized, secure, and scalable enterprise applications that produce measurable organizational growth.
Scalable Architecture for Long-Term Growth
- Users, request volume, data growth, and integrations
- Application modules, deployment, infrastructure, and future teams
- Get future-ready architectures for 10x to 100x growth
- Ensure long-term performance and adaptability
Security-First Development Approach
- Security across code, APIs, identity, data, and infrastructure
- CI/CD security with 100% HIPAA and GDPR compliance
- Data and systems protected with highest security measures
Result-Driven Execution
- Sprint planning, defined priorities, and development tracking
- Code reviews, automated testing, and regular releases
- Deliver committed results on time and within budget
- Milestones, iterative development, and continuous tracking
Transparent Engineering Collaboration
- Direct developer access, version control, and pull requests
- Sprint boards, build pipelines, and development updates
Client References
Terri Villafana Digital Development Manager - Nutranext, LLC
We are Clorox- an American global manufacturer and marketer of consumer and professional products. I hired CMARIX in 2015 to assist our in-house team in our first migration to Magento 1. After that, we migrated all sites to Magento 1, and we launched a B2B portal. Since then, we have migrated all sites to Magento 2, and CMARIX continues to be a strong daily contributor of our projects and day-to-day tasks. The team has been extremely accommodating, patient, and has always remained professional and reliable.
Guillaume Bleau Chief Executive Officer at UPentreprise
I am the president of a consulting and business solutions company. CMARIX has proven to be a reliable vendor that consistently offers practical website solutions. The team communicates well across multiple time zones and is flexible with existing practices.
Microsoft-Certified Developers at Your Service.
Scale Your .NET Core Developer Team!Technologies Our .NET Core Developers Use
Our .NET Core developers build high-performance, enterprise-grade digital ecosystems by combining Clean Architecture paradigms with scalable cloud-native frameworks. They leverage deep C# and Azure expertise, along with cutting-edge AI integrations, to deliver secure, distributed microservices and cross-platform applications optimized for peak efficiency.
Core .NET Platform
Programming Languages
Web Development
Application Architecture
Data Access
Databases
AI & Machine Learning
Messaging & Real-Time
Cloud
Azure Services
Containers & DevOps
CI/CD
Authentication & Identity
Testing
Monitoring & Observability
Mobile & Cross-Platform
Desktop
Version Control
Project Management
Popular .NET Integrations Our Developers Expertise In
Partnering with CMARIX equips businesses with high-performing, scalable, and secure .NET integrations. Our specialized developers seamlessly connect your backend architecture with high-end frontend frameworks, powerful cloud platforms, and leading-edge AI solutions to supercharge your business efficiency.
Hire .NET Core Developers for Enterprise & Product Applications
At CMARIX, we deploy elite .NET development teams to engineer high-performing, resilient backend ecosystems for global brands and enterprise-level operations. Our engineering specialists combine advanced C# and ASP.NET Core customization with modern cloud architectures to convert your complex business workflows into uninterrupted, high-growth digital applications.
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Enterprise Applications
Build applications for finance, operations, administration, workflow automation, customer management, reporting, and enterprise integration.
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SaaS Platforms
Create SaaS applications that have capabilities such as multi-tenancy, authentication, subscription management, dashboards, APIs, notifications, and analytics.
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API Platforms
Build secure APIs serving web applications, mobile apps, partners, internal systems, IoT products, and external platforms.
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Real-Time Applications
Develop collaboration platforms, chat applications, live dashboards, tracking, notifications, and monitoring systems.
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FinTech & Banking Software
Create systems for payments, insurance, financial operations, banking workflows, reporting, and account management.
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Healthcare Applications
Develop software for patient workflows, administration, healthcare operations, scheduling, secure data exchange, and reporting. Regulated healthcare systems require project-specific security and compliance planning.
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ERP & Business Management Software
Build systems managing operations, inventory, finance, employees, production, reporting, and business workflows.
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AI-Powered Enterprise Applications
Develop AI copilots, enterprise search, RAG applications, document automation, AI agents, predictive systems, and intelligent workflows.
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Custom Product Applications
Manage product delivery by leveraging strong architecture, agile development, end-to-end testing, and cloud deployment to sustain performance and maintenance in unique business scenarios.
When Should You Hire .NET Core Developers?
.NET is the best option if your strategy focuses on enterprise-level systems and integrating with the Microsoft ecosystem. You should employ .NET programmers if your project falls into any of the following concise groups:
- Legacy Modernization & Version Compliance: You need to upgrade outdated .NET Framework versions, migrate Xamarin apps to .NET MAUI, or modernize legacy ASP.NET systems approaching end-of-support status.
- Microsoft Cloud & Database Integration: Your infrastructure relies heavily on Microsoft Azure and requires specialized expertise in SQL Server, Azure SQL databases, and cloud-native microservices architectures.
- Full-Stack & Real-Time Enterprise Architecture: You want to leverage C# across both frontend and backend using Blazor, build scalable ASP.NET Core APIs, or implement real-time features via SignalR for enterprise SaaS applications.
- AI Integration & Staff Augmentation: You need to embed advanced AI capabilities directly into existing Microsoft systems or quickly scale your internal engineering team with senior .NET capacity.
Other Dedicated Developer Profiles We Offer
Extend your Microsoft and full-stack engineering team with related expertise.
.NET Core Insights and Resources
Frequently Asked Questions About Hiring .NET Core Developers
- What does a .NET Core developer do?
A .NET Core developer builds and maintains applications using C#, modern .NET, ASP.NET Core, APIs, databases, cloud platforms, and supporting Microsoft technologies. Responsibilities can include backend development, web applications, APIs, database engineering, cloud integration, testing, security, DevOps, and application modernization.
- Is .NET Core still used in 2026?
The term “.NET Core” is still widely used in hiring and technology searches, but Microsoft has branded its modern platform simply as .NET since .NET 5. Modern developers typically work with current .NET releases and ASP.NET Core while also supporting older .NET Core applications.
- How do I hire a .NET Core developer from CMARIX?
The process includes sharing your requirements, reviewing matched developer profiles, interviewing shortlisted developers, and selecting and onboarding your preferred resource.
- Can I interview .NET developers before hiring?
Yes. You can directly interview shortlisted developers to evaluate technical expertise, architecture experience, communication, problem-solving, and team fit.
- What skills should I look for when hiring a .NET developer?
Important skills include C#, ASP.NET Core, Entity Framework Core, LINQ, SQL, REST APIs, dependency injection, testing, and Git. Senior developers should also understand architecture, cloud, security, microservices, messaging, containers, CI/CD, and performance.
- How much does it cost to hire a .NET Core developer?
Cost depends on experience, required .NET technologies, architecture responsibilities, cloud expertise, project complexity, engagement model, duration, and required working-hour overlap. Share your requirements with CMARIX for a customized estimate.
- Can I hire .NET developers hourly?
Yes. CMARIX supports hourly hiring, full-time monthly hiring, and project-based development.
- Can a .NET developer work with my existing team?
Yes. Dedicated developers can participate in sprint planning, stand-ups, pull requests, code reviews, architecture discussions, release planning, and production support.
- Do I own my .NET application source code?
Source code and intellectual property ownership should be defined in your engagement agreement. CMARIX can structure engagements around complete code ownership and IP protection for agreed deliverables.
- Does CMARIX provide post-launch .NET support?
Yes. Ongoing support can include bug fixing, runtime upgrades, security patches, dependency updates, performance improvements, cloud support, database optimization, and feature development.
Let's Launch Your Business.
Your unique conceptual workflows will be cleanly crafted into an elite digital system by our specialized engineers.