Benefits of Custom .Net Development Services
Telliant Systems delivers end-to-end custom .NET development services to US-based companies, designing, building, and modernizing secure, scalable applications through Microsoft-aligned architecture, integrated QA, DevOps, and cloud engineering.
Legacy Application Modernization
Upgrade aging .NET Framework, Web Forms, MVC, and WCF systems into maintainable, modern architectures. Refactor codebases, improve UI/UX, and migrate legacy tech onto the .NET platform, now boosted with smart features via ML.NET AI integration.
Cross-Platform Development
Build high-performing applications for Windows, macOS, Android, and iOS using a single codebase. This significantly reduces development time and costs while delivering a smooth, consistent user experience across every device.
Integrations and Interoperability
Seamlessly connect your applications with AI/ML tools and third-party monitoring, security, and cyber-risk prevention systems to streamline workflows. Powered by built-in .NET security features, these integrations ensure maximum protection for your software and data.
Strengthen Application Security
Maximize data protection by leveraging built-in .NET security controls to implement robust authentication, authorization, and role-based access controls. Safeguard sensitive assets using cryptographic services, encryption, hashing, audit logging, and GuardRails.
.NET Development Services We Provide
As a certified Microsoft Solutions Partner, we provide .NET software development services to build web, cloud, mobile, desktop, and API applications, migrate legacy systems, and engineer distributed platforms that scale seamlessly with growing traffic, transactions, and data volume.
.NET Consulting and Architecture
We provide expert .NET consulting across the U.S. in C#, .NET Core, ASP.NET Core, and Azure. From architecture assessments to security planning, we help organizations optimize their applications, architecture, and performance through strategic guidance, problem-solving, and training.
- Technology and architecture assessment
- Application roadmap
- Platform selection
- Performance and scalability planning
- Security and compliance planning
Custom .NET Application Development
We deliver full-cycle, scalable, and secure .NET solutions for web, mobile, and desktop. Leveraging .NET’s strengths in heavy data processing and advanced calculations, we build high-performing applications tailored for Windows and multi-platform environments.
- Custom business applications
- Enterprise software
- SaaS products
- Internal workflow platforms
- Customer and partner portals
ASP.NET Web Development
ASP.NET protects apps using multi-factor authentication (MFA) and standard protocols. We build scalable, cloud-first solutions across devices, ensuring data security, operational scalability, and functional consistency.
- Enterprise web applications
- Customer-facing portals
- B2B platforms
- Real-time web applications
- Responsive front-end integration
.NET API and Microservices Development
We transform monolithic systems into agile, high-performance microservices using Docker, Kubernetes, and API gateways. We build secure REST APIs, modernize legacy SOAP ecosystems, and enable real-time communication for Microsoft-based applications.
- REST and GraphQL APIs
- Microservices
- Event-driven architecture
- API gateways
- Service integrations
Azure .NET Application Development
As a certified Microsoft Azure Solutions Partner, we build cloud-native applications and deploy enterprise Data & AI platforms. Leveraging Azure’s full ecosystem, we transform your raw data into actionable intelligence.
- Azure App Service
- Azure Functions
- Azure Kubernetes Service
- Azure Service Bus
- Azure SQL and Cosmos DB
- Azure API Management
.NET Migration and Modernization
Strategize and execute fast, reliable .NET cloud migrations. We help achieve cost-effectiveness, operational efficiency, and resilience by modernizing legacy applications to leverage cutting edge, cloud-native features for peak performance and scalability.
- .NET Framework to supported .NET versions
- Web Forms and legacy MVC modernization
- WCF replacement
- Monolith-to-microservices transformation
- On-premise-to-cloud migration
- Containerization
Enterprise .NET Development
Deliver secure, scalable, cross-platform apps on Android, Windows, Mac, iOS, and Linux. We empower organizations with compliance-ready, cloud-integrated enterprise software powered by advanced security and strong DevOps.
- ERP and CRM platforms
- Multi-tenant SaaS systems
- Workflow and process automation
- Data-intensive applications
- High-volume transactional systems
.NET MAUI Application Development
We accelerate cross-platform application delivery, build reusable styling and themes, and migrate legacy Xamarin projects to .NET MAUI. We help unlock peak performance and modern features using .NET 8, Hot Reload, Blazor, and WinUI 3.
- Cross-platform mobile applications
- Windows and macOS desktop applications
- Offline applications
- Secure enterprise mobility
- Xamarin-to-.NET MAUI migration
.NET Application Testing and QA
We leverage NUnit, xUnit, MSTest, Selenium, and Postman to automate .NET testing, catching bugs early and streamlining delivery. Combining automated testing with compliance standards, we eliminate vulnerabilities, prevent leaks, and guarantee stability.
- Functional testing
- API testing
- Test automation
- Performance testing
- Security testing
- Regression testing
Support and Application Maintenance
We offer proactive support and maintenance to keep your applications running smoothly long after deployment. Through regular updates, security monitoring, performance optimization, and compliance management, we ensure long-term stability and peak software health.
- Production monitoring
- Bug resolution
- Performance optimization
- Version upgrades
- Security patching
- Feature enhancement
Application Integration Services
We connect your .NET applications with third-party software, payment gateways, and leading cloud platforms like Azure, AWS, and Google Cloud. Utilizing secure RESTful and SOAP APIs, we deliver smooth, real-time, and scheduled data exchange across your entire tech stack.
- Microsoft Dynamics 365
- Microsoft 365
- Power Platform
- SAP
- Salesforce
- Payment gateways
- Third-party platforms
Proven Track Record You Can Trust
years of software engineering experience
projects delivered
engineers and QA professionals
Clutch Review Rating
Microsoft Gold Partner
Industry-Focused Custom .NET Development Company
Empowering mid-sized and large businesses, we provide ASP.NET Core development services and leverage exceptional .NET proficiency to drive faster development. We tailor every solution to the specific requirements of industries including healthcare, fintech, education, hospitality, and manufacturing.
Healthcare
Fintech
Manufacturing
Education
Supply Chain
Explore Our .NET Technology Stack
Through our .NET development services, we resolve slow response times, unstable integrations, database bottlenecks, and inefficient application architecture by leveraging advanced technologies including AI, ML, IoT, and Azure AI.
FAQs for .Net Development Services
Created by Microsoft, .NET is an open-source platform for building tailored desktop, web, and mobile apps. .NET development services help businesses harness this technology to deliver cost-effective solutions quickly via extensive libraries while seamlessly integrating with tools like Azure, Power BI, and Dynamics 365.
.NET enables the creation of a wide range of applications, including desktop, web, and mobile solutions, alongside robust business systems such as ERP, CRM, SCM, e-commerce platforms, and financial management tools.
At Telliant Systems, we provide end-to-end .NET development services, including custom software development, modernizing legacy .NET applications, cross-platform app development using ASP.NET Core and .NET MAUI, cloud migration and integration with Microsoft Azure, and dedicated enterprise .NET consulting.
.NET serves as an independent software development platform and runtime responsible for executing code and managing memory. In contrast, ASP.NET Core is a specialized framework designed specifically for handling web requests, routing, and HTML rendering, which operates strictly on top of the .NET platform.
When choosing a custom .NET development company, evaluate their Microsoft partnership status, proven track record in legacy modernization and cloud migration on Azure, cross-platform technical expertise, and flexible engagement models to ensure they align with your business goals.
Yes, as a Microsoft Solutions Partner, Telliant Systems modernizes legacy .NET Framework applications by re-architecting them into scalable, cloud-native solutions using modern technologies, microservices, and cloud migration on Azure.
Yes, modern .NET applications run seamlessly across Linux, macOS, and Windows, and Telliant Systems leverages this cross-platform capability to build and deploy versatile, high-performance solutions across any operating system environment.
Yes, .NET is an ideal choice for enterprise application development because Telliant Systems leverages its high scalability, robust security, and cross-platform performance to build mission-critical systems that effortlessly handle heavy traffic and large data volumes.
Yes, Telliant Systems seamlessly migrates legacy and modern .NET applications to Microsoft Azure, transforming them into secure, scalable, and cost-effective cloud-native solutions.
Yes, Telliant Systems provides dedicated, handpicked .NET developers on demand through flexible engagement models, helping you scale your team quickly without overhead costs. Hire .Net Developers Now.
At Telliant Systems, the timeline for .NET application development typically ranges from 2 to 4 months for small MVPs, 6 to 12 months for medium-sized projects like custom business tools, and 12 to 24+ months for large-scale enterprise platforms. By leveraging Agile methodologies, automated deployment pipelines, and .NET’s pre-built libraries, our dedicated teams accelerate project delivery without compromising quality, security, or performance.
Custom .NET development costs typically range from $15,000 to $50,000 for small MVPs, $50,000 to $150,000 for medium-sized business applications, and $150,000 to $500,000+ for large-scale enterprise platforms. Telliant Systems offers flexible Fixed-Bid, Time & Material, and Dedicated Team models to align with your specific budget and project scope.