Top .NET Development Companies in USA

At IT Craft, we build custom .NET-based software for companies that need reliable business applications, not just a quick website or a one-time code delivery. Our team works with enterprise platforms, internal systems, SaaS products, mobile apps, dashboards, APIs, and software that has to connect with existing business tools.

We deliver full-cycle .NET development services, including discovery, UX/UI design, backend development, web and mobile app development, API integration, QA testing, DevOps practices, cloud services, and beyond. Based on project requirements, our engineers utilize ASP.NET, ASP.NET Core, Microsoft Azure, SQL databases, microservices, integration, and other .NET technologies.

One relevant case is a POS system development project for a POS solutions company Pecan. IT Craft helped build and maintain software for retail and service businesses, covering complex business logic, integrations, stable backend work, and long-term product development. As a result, the solution supported continuous product evolution and helped the client expand functionality for different types of POS users, including retail and service operations with varying operational needs.

Biggest Strengths

• Custom Software Development: IT Craft works with products that need specific business logic rather than standard templates. This is useful for internal systems, SaaS platforms, portals, enterprise tools, and apps with complex workflows.
• Healthcare and Logistics Expertise: The team has experience with industries where reliability and data accuracy matter: healthcare platforms, logistics systems, delivery tools, and operations-heavy software.
• Dedicated Development Teams: Clients can bring in .NET developers, QA engineers, DevOps specialists, business analysts, designers, and project managers when they need more capacity or specific expertise.
• Full-Cycle Product Delivery: IT Craft can stay involved from early planning to launch and later updates, instead of handing the product off after the first release.
• Startup Scaling Experience: The company works with startups and growing businesses that need to move from MVP to a more stable, scalable product.

Sparq Technologies is based in Atlanta, Georgia, and specializes in enterprise modernization, operations, implementation of AI, and software development for enterprises. They do not work much with smaller applications but rather deal with the processes in business that require becoming more efficient, cleaner, and more operational. In case of .NET, Sparq might be a good choice if it is related to process automation or legacy modernization.

Biggest Strengths

• AI-Driven Modernization: Sparq works with companies that want to bring AI into existing systems instead of building isolated AI experiments.
• Process Automation: The company helps replace manual work, fragmented tools, and outdated workflows with better-connected software.
• Digital Transformation: Sparq is relevant for organizations that need software modernization as part of a larger business change.
• Senior Engineering Talent: Its model is built around experienced engineering teams that can handle complex enterprise environments.

Oxagile headquarters is located in New York, and it boasts an extensive experience in custom software development, particularly in OTT, video streaming, AdTech, artificial intelligence, FinTech, and cloud solutions. The .NET services at Oxagile are part of a broader engineering offering that often requires working with sophisticated platforms, heavy-load architectures, media pipelines, and big data processing. Companies with technically challenging solutions would benefit from choosing Oxagile rather than a generic web agency.

Biggest Strengths

• OTT and Streaming Solutions: Oxagile has deep experience with video platforms, media workflows, live streaming, and related backend systems.
• AI and Machine Learning: The team can add AI/ML features for automation, recommendation, analytics, and data processing.
• Cloud-Native Development: Oxagile works with cloud-based architectures that need scalability, availability, and reliable infrastructure.
• Complex Software Engineering: The company is used to products where performance, integrations, and backend logic are not simple.

The development department of Leobit is located in Lviv, Ukraine, and the company has an outpost in Austin, Texas, in the United States. Leobit is considered to be closely related to Microsoft technology, .NET, Azure, Software as a Service, AI solutions, and enterprise software. Leobit usually collaborates with startup and tech companies, which have no engineering department and require one.

Biggest Strengths

• Microsoft and Azure Expertise: Leobit has a strong focus on Microsoft technologies, including .NET and Azure-based development.
• SaaS Product Development: The company works on SaaS products where architecture, subscriptions, user roles, and continuous updates matter.
• Certified Quality Standards: Leobit follows recognized quality and security standards, which is important for clients with stricter vendor requirements.
• Flexible Engagement Models: Clients can work with Leobit through dedicated teams, project-based delivery, or team extension.

Iflexion has been in software development since 1999 and works with enterprise software, .NET, CRM, ERP, AI, cloud solutions, and custom business applications. The company is a broad engineering vendor rather than a niche .NET shop. It may be a practical choice for organizations that need several technology areas covered at once: backend systems, business process software, integrations, reporting, and modernization.

Biggest Strengths

• Enterprise Software Development: Iflexion works with large business systems where reliability, permissions, integrations, and long-term maintenance matter.
• CRM and ERP Expertise: The company has experience with software that connects sales, operations, customer data, and internal workflows.
• Large Engineering Team: Iflexion can provide broader delivery capacity for projects that need multiple roles and technology areas.
• Regulated Industry Experience: The team has worked with industries where security, compliance, and process control are important.

Binary Studio is an IT company located in Lviv, Ukraine that provides services in the field of custom software development, .NET, web and mobile applications and product engineering. It is characterized by a somewhat selective approach to engineering and Binary Studio Academy, which facilitates the training and filtering of technical specialists. Binary Studio is a suitable choice for .NET if the customer is looking for a product-oriented developer.

Biggest Strengths

• Product-Focused Development: Binary Studio works closely with clients on product logic, not only implementation tasks.
• Strong Engineering Culture: The company puts a lot of attention into developer selection, training, and engineering standards.
• MVP Development: Binary Studio can help startups build a first usable version without turning the product into an oversized project too early.
• Startup Partnerships: The team has experience working with founders and product companies over longer development cycles.

Cprime is based in Cary, North Carolina, and works at the intersection of Agile consulting, DevOps, cloud engineering, enterprise transformation, and software delivery. It is not a typical .NET-only development vendor. Companies usually consider Cprime when they need help with delivery systems, Agile processes, Atlassian tools, cloud practices, or modernization programs that include software engineering as one part of the work.

Biggest Strengths

• Agile Consulting: Cprime helps organizations set up or rethink Agile practices, delivery workflows, and team processes.
• DevOps Expertise: The company works with CI/CD, cloud infrastructure, automation, and release management.
• Enterprise Transformation: Cprime is suitable for large companies that need process and technology changes across multiple teams.
• Atlassian Solutions: The company has strong expertise around Atlassian tools such as Jira and Confluence.

BairesDev was founded in Buenos Aires and has become one of the better-known nearshore software development providers with major operations in the U.S. The company offers dedicated teams, staff augmentation, custom software development, and enterprise engineering across many technologies, including .NET. It is often considered when companies need to add qualified developers quickly and want access to a large Latin American talent pool.

Biggest Strengths

• Nearshore Talent Network: BairesDev gives U.S. companies access to engineering teams in nearby time zones.
• Rapid Team Scaling: The company can add developers and other specialists quickly when a project needs more capacity.
• Enterprise Project Delivery: BairesDev works with larger organizations that need structured delivery and broad technical coverage.
• Broad Technology Expertise: Its teams cover .NET, web development, mobile apps, AI, cloud, QA, and many other areas.

Itransition is headquartered in Lakewood, Colorado, and works as a global software engineering company with a strong enterprise focus. Its services cover .NET development, Microsoft technologies, cloud, AI, data analytics, digital transformation, and industry-specific software. The company is a fit for organizations that need large delivery capacity, mature processes, and experience with complex business applications.

Biggest Strengths

• Enterprise-Scale Delivery: Itransition can handle large software initiatives that involve multiple teams, systems, and stakeholders.
• Microsoft Expertise: The company works with Microsoft technologies, including .NET, Azure, and enterprise software ecosystems.
• Industry-Specific Solutions: Itransition has experience across healthcare, finance, retail, manufacturing, and other sectors with specific operational requirements.
• Digital Transformation: The team can help modernize outdated systems and connect software development with wider business change.

Saritasa is based in Newport Beach, California, and builds custom software, mobile apps, web platforms, .NET applications, AR/VR products, and IoT solutions. Compared with larger outsourcing vendors, Saritasa often feels more like a hands-on product development partner, especially for clients that want U.S.-based project management and help turning a technical idea into working software.

Biggest Strengths

• AR/VR Development: Saritasa has experience with immersive applications, training tools, simulations, and interactive 3D products.
• IoT Solutions: The company works with connected devices, sensors, hardware integrations, and software that receives or manages device data.
• Strong Project Management: Saritasa is known for keeping clients close to the development process through structured planning and communication.
• Full-Cycle Development Services: The team can cover product strategy, design, development, testing, deployment, and ongoing technical work.