Hire C# Developers

Hire professional C# developers to build, modernize, and scale secure .NET applications, APIs, cloud-native platforms, and enterprise software.

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What Our C# Developers Build, Modernize, and Integrate

Whether you are launching a new .NET product, modernizing a legacy application, or scaling an existing platform, our offshore C# developers provide secure, scalable, and cost-efficient development support. With expertise across modern .NET, cloud platforms, APIs, databases, and enterprise integrations, we help you accelerate delivery while reducing hiring overhead.

C# Web Development

C# Web Application Development

Hire C# web developers to build secure, scalable, and high-performance web applications using ASP.NET Core, Blazor, Razor Pages, MVC, and Entity Framework Core. Our developers create data-driven portals, internal platforms, SaaS applications, dashboards, and customer-facing web apps with clean architecture, responsive interfaces, and cloud-ready deployment.

C# Windows Application Development

C# API and Microservices Development

Build secure APIs, microservices, and integration layers with experienced C#/.NET developers. We develop REST APIs, GraphQL APIs, gRPC services, real-time SignalR features, and event-driven services that connect web apps, mobile apps, databases, third-party platforms, and enterprise systems with reliable data exchange.

C# Mobile App Development

Windows and Desktop Application Modernization

Hire C# developers to build and modernize Windows desktop applications using WPF, WinUI 3, Windows App SDK, and .NET MAUI, where cross-platform desktop support is required. We help modernize legacy WinForms/WPF applications, improve performance, update UI experiences, and prepare desktop systems for cloud or API-based integration.

C# IoT Development

Cross-Platform App Development with .NET MAUI

Build cross-platform mobile and desktop applications using .NET MAUI and a shared C# codebase. Our developers create applications for Android, iOS, macOS, and Windows with native-like performance, secure backend connectivity, offline support, and API-driven experiences. Xamarin-based applications can also be migrated to .NET MAUI for continued platform support.

C# Cloud Development

Cloud-Native C# Development

Our C# developers build cloud-native .NET applications using Azure, AWS, Docker, Kubernetes, Azure Functions, serverless workflows, and managed cloud services. We help design scalable backend services, microservices, APIs, event-driven applications, and deployment-ready architectures that reduce infrastructure complexity and improve release speed.

C# SaaS Development

C# SaaS Development

Hire C# developers to build secure, multi-tenant SaaS applications with subscription workflows, role-based access, usage tracking, analytics, payment integrations, and cloud deployment. Our team helps you design scalable SaaS architectures that support multiple customers, controlled access, data isolation, and future product expansion.

C# AI/ML Solutions

AI-powered .NET Application Development

Our C# developers help integrate AI and machine learning capabilities into .NET applications using ML.NET, Azure AI, Azure OpenAI, ONNX Runtime, AI APIs, and enterprise data workflows. We support intelligent automation, predictive analytics, recommendation engines, document processing, chatbot integration, and RAG-enabled enterprise knowledge experiences.

C# Migration

C# Migration and .NET Modernization

Modernize legacy .NET Framework, .NET Core, or older C# applications to support latest .NET versions. Our developers help assess dependencies, refactor legacy code, improve performance, strengthen security, migrate Xamarin apps to .NET MAUI, and prepare applications for cloud-native deployment.

C# Support & Maintenance

C# Support and Maintenance

Keep your .NET applications secure, stable, and optimized with ongoing C# support and maintenance. Our developers handle bug fixes, performance tuning, security updates, dependency upgrades, cloud monitoring, release support, and feature enhancements to improve application reliability and reduce technical debt.

Technical Expertise of Our
C# Developers

Hire C# developers with hands-on experience across modern .NET development, backend engineering, cloud-native architecture, APIs, enterprise integrations, testing, and application modernization.

Our C# Development Case Studies

  • How We Updated & Upgraded A Game That No Longer Worked Properly on Android

    How We Updated & Upgraded A Game That No Longer Worked Properly on Android

    Technology Stack : Unity3d, C#, Graphics

    Learn More
  • Porting Legacy ASP Application to .NET

    Porting Legacy ASP Application to .NET

    Technology Stack : ASP.NET, C#, JS, HTML, CSS

    Learn More
  • How we developed an app that helps users manage different kinds of credit & interpret credit report

    How we developed an app that helps users manage different kinds of credit & interpret credit report

    Technology Stack : Unity3d Game Engine, C#, PHP-Mysql

    Learn More
  • How we successfully built an app which lets the users select their favorite bikes, access inventories, and more

    How we successfully built an app which lets the users select their favorite bikes, access inventories, and more

    Technology Stack : Unity3d Game Engine, C#, PHP-Mysql

    Learn More
  • A distinctive app that allows users to engage in an immersive gaming experience

    A distinctive app that allows users to engage in an immersive gaming experience

    Technology Stack : Unity3d Game Engine, C#

    Learn More
Let's Discuss Your Project

Let's Discuss Your Project

  • Our solutions experts schedule a secure meeting within 24 hours.
  • They recommend tailored skills and hiring models.
  • You make informed decisions based on our expert guidance.
Schedule a discovery call

Build a Complete C# Development Team

Capital Numbers’ C# development services bring together the expertise needed for enterprises to build, modernize, and scale applications efficiently.

Ideal Process Flow
cycle
Recommended Team

Manage sprint planning, timelines, communication, releases, risks, and delivery coordination.

Related tools and technologies:

Jira, Azure DevOps, Confluence, Scrum, Kanban, Release Planning

Define business workflows, technical requirements, user stories, acceptance criteria, and integration needs.

Related tools and technologies:

User Stories, Process Mapping, Azure DevOps, Miro, Lucidchart, Confluence

Design scalable C# and .NET architectures for enterprise systems, APIs, microservices, cloud platforms, and modernization programs.

Related tools and technologies:

C#, .NET 10, ASP.NET Core, .NET Aspire, Microservices, Clean Architecture, Native AOT, Azure

Build secure, scalable applications, APIs, backend services, desktop software, and enterprise workflows using modern C#.

Related tools and technologies:

C# 14, .NET 10, ASP.NET Core, Entity Framework Core, LINQ, Minimal APIs, gRPC, SignalR

Develop responsive interfaces and full-stack experiences for C#/.NET applications and enterprise platforms.

Related tools and technologies:

Blazor (Server & WebAssembly), Angular, React, TypeScript, JavaScript, Tailwind CSS

Design, optimize, and manage reliable data layers for enterprise applications, analytics, reporting, and integrations.

Related tools and technologies:

SQL Server, PostgreSQL & pgvector, Azure SQL, Cosmos DB, Redis, Distributed HybridCache

Integrate AI-powered workflows, autonomous agents, intelligent search, automation, RAG systems, and generative AI features into C# applications.

Related tools and technologies:

Azure OpenAI, Semantic Kernel, Microsoft Agent Framework, Vector Databases (Pinecone/Milvus), RAG Pipelines

Automate builds, deployments, monitoring, infrastructure, scaling, and release workflows for C# and .NET applications.

Related tools and technologies:

Azure DevOps Pipelines, GitHub Actions, Docker, Kubernetes, Terraform, OpenTelemetry, Azure, AWS

Validate application quality through automated testing, API testing, performance checks, regression testing, and security validation.

Related tools and technologies:

Playwright, xUnit/NUnit, Reqnroll (BDD), Postman, JMeter, BrowserStack

Hire C# Developers in 3 Easy Steps

Build your team with Capital Numbers - a trusted C# development company that offers vetted developers, flexible engagement models, and seamless team scaling.

  • 1

    Select C# Developers

    Review shortlisted C# developers from our in-house team and interview the candidates who best match your technical requirements.

  • 2

    Add Them to Your Team

    Integrate selected developers into your tools, workflows, and sprint cycles. Assign tasks directly and track progress with complete visibility.

  • 3

    Scale On Demand

    Start with one C# developer or expand into a complete .NET team with architects, cloud engineers, DevOps specialists, and QA experts as needed.

Need Specialized Skills for Your Projects?

Choose from a range of expert developers in different technologies to fit your project needs.

Join Our Journey of Excellence and Industry Recognition

  • Times Business Awards 2025
  • High Growth Companies
  • Clutch 1000 (2025)
  • ISO
  • SOC 2

Select the Right Engagement Model for C# Developers

Hire Dedicated Development

Managed Team

Your product, our dedicated team. From concept to completion, we handle it all.

Hire Dedicated Development

Staff Augmentation

Need extra hands? Our experts seamlessly join your team, providing the skills you need, when you need them.

Project-Based

Fixed Cost

Upfront price, guaranteed delivery. Your project completed on time and within budget.

Still Not Sure? Let Us Help You

Pick your business needs:

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300+ Glowing Customer Reviews

97 out of 100 Clients Have Given Us a Five Star Rating on Google & Clutch

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"They're very willing to assemble the team that we ask for if we have certain preferences."

James Burke

James Burke

Managing Partner,

Consensus Interactive
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"Capital Numbers was easy to work with, and they were always available."

P. Attur

P. Attur

CIO,

Hudson Regional Hospital
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"It is impressive how easy it was to work with them."

Jose Rodriguez

Jose Rodriguez

Communications Director,

Trans Europe Halles
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"Excellent attention to detail and responsiveness."

Bernice Ang

Bernice Ang

Founder,

Thrive Life Consulting
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"They have an excellent staff and great communication."

DeVon Favors

DeVon Favors

Founder,

Creating Favors LLC
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"They were quick and efficient and their work was very good."

Bob Norberg

Bob Norberg

CMO,

Cloud Age Solutions
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"I was impressed at the speed, cost, and talent that they have at Capital Numbers."

James Morris

James Morris

Co-Founder,

StudioSesh, Inc.
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"Capital Numbers has been a trusted resource & partner for years."

Scott R. Wells

Scott R. Wells

Visionary,

ConversionFormula
Join Our Success Stories

Why Hire C# Developers from Capital Numbers?

Build, modernize, and scale .NET applications with experienced C# developers who combine enterprise engineering discipline with flexible offshore delivery.

  • Vetted C# and .NET talent for enterprise projects
    Vetted C#/.NET Talent for Enterprise Projects

    Hire mid-level and senior C# developers with hands-on experience in .NET 8/10, ASP.NET Core, Blazor, Entity Framework Core, REST APIs, microservices, Azure, SQL databases, and Agile delivery.

  • Faster hiring without recruitment overhead
    Faster Hiring Without Recruitment Overhead

    Skip sourcing, screening, payroll, and administrative delays. Review profiles, interview shortlisted C# developers, and onboard the right talent based on your project needs.

  • Full control over your developers
    Full Control Over Your Developers

    Your C# developers work as an extension of your internal team. You can assign tasks, manage priorities, review code, track progress, and communicate directly through your preferred tools.

  • SOC 2 Type II-Certified Security Practices
    SOC 2 Type II-Certified Security Practices

    With SOC 2 Type II, ISO 27001, and ISO 9001-certified practices, Capital Numbers helps protect your source code, IP, credentials, customer data, and product roadmap.

  • Flexible scaling for changing delivery needs
    Flexible Scaling for Changing Delivery Needs

    Start with one C# developer; add frontend, DevOps, QA, or cloud experts, or build a dedicated .NET product team as your roadmap expands.

  • Lower cost without losing delivery visibility
    Lower Cost Without Losing Delivery Visibility

    Reduce development costs by up to 50% compared to local hiring while maintaining transparent communication, timesheets, reporting, and direct collaboration.

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    Have Questions? Find Your Answers Here.

    C# is a strong choice for businesses building secure web applications, enterprise software, cloud-native platforms, APIs, desktop systems, and cross-platform applications. When combined with modern .NET, it offers high performance, strong typing, mature tooling, and a scalable architecture. Hiring experienced C# developers helps you build reliable applications faster while keeping long-term maintenance manageable.

    Our C# developers can work on ASP.NET Core web applications, SaaS platforms, APIs, microservices, enterprise systems, desktop modernization, cloud-native applications, AI-enabled .NET applications, and legacy .NET modernization projects. This allows you to support both new product development and existing system improvement with one skilled team.

    Yes. Our developers can work with existing .NET Framework, .NET Core, or modern .NET applications. They can review codebases, understand dependencies, fix issues, improve performance, add features, modernize architecture, and support phased migration to newer .NET versions.

    Yes. We help modernize legacy .NET Framework, .NET Core, Xamarin, WinForms, and WPF applications. Our team can support migration to .NET 8 LTS or .NET 10 LTS, Xamarin to .NET MAUI migration, cloud-readiness, performance improvements, dependency upgrades, and security hardening.

    Every C# developer is screened for .NET expertise, coding ability, API development, database knowledge, architecture understanding, cloud familiarity, communication skills, and project fit. You can review resumes and interview shortlisted developers before hiring, giving you confidence in both technical fit and team compatibility.

    Yes. You can hire C# developers for short-term, long-term, full-time, part-time, staff augmentation, managed team, or fixed-cost requirements. This gives you the flexibility to add .NET expertise when needed without long-term hiring commitments.

    We use secure coding practices, NDA-backed engagements, access controls, encryption, secure authentication, API security, regular updates, and OWASP Top 10-aligned development practices. Our ISO 27001, ISO 9001, and SOC 2 Type II-aligned processes help protect your source code, credentials, data, and business logic.

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