C# Development Services

Work with C#experts trusted by the world's top tech teams.

Work with C# experts trusted by the world's top tech teams. As a leading software development company, we've delivered hundreds of C# and .NET projects for platforms with strict uptime, security, and compliance demands. Onboard our senior C# engineers in as little as 2 weeks.

C#

AI Coding tools we use

Custom C# development services

You've probably used products built by our C# developers.

Our teams build enterprise-grade systems, APIs, and cloud backends with .NET. We specialize in modernizing legacy apps, improving performance through refactoring, and integrating complex systems at scale.

C# engineers collaborating on enterprise APIs and cloud platform architecture

Enterprise APIs and Microservices

Poorly designed services create bottlenecks, cascade failures, and slow down product teams. We build enterprise APIs and C# microservices designed for resilience and maintainability, implementing explicit API contracts, versioning strategies, and fault tolerance from day one. You get a cohesive system that your teams can build on, operate confidently, and evolve safely.

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Our C# development team

Backed by 4000+ devs

Why clients choose our C# teams

We've spent over a decade perfecting C# delivery for complex, enterprise-grade systems. We staff vetted, full-time .NET engineers who integrate cleanly with your development process and operate with clear ownership.

Speak With Our Team

Our C# developers average 10+ years of experience. We hire less than 1% of 2.2 million applicants after hands-on evaluations and interviews tailored to .NET technologies. These assessments go beyond theory, covering real-life scenarios and implementing security controls for regulated environments. You work directly with senior engineers who've already proven they can deliver at the highest level.

C# case studies

Hundreds of C# projects delivered.

Our engineers have shipped APIs, web apps, desktop tools, and mobile products across industries. Our solutions deliver measurable outcomes: latency budgets met, defect rates reduced, and production cutovers with zero rollback.

FINANCIAL SERVICES

Upgraded and Maintained Payment Platform Infrastructure for 100 AWS Accounts

Repay needed senior SRE and platform engineering to support constant uptime for 233,000 suppliers enrolled in its system. Over 4 years, we upgraded two Kubernetes clusters, improved CI/CD pipelines, and maintained, monitored, and updated internal systems across 100 AWS accounts. The result was steadier releases, clearer ownership, and a platform that could absorb change without service disruption.

Repay

  • C#
  • .NET
  • Amazon Web Services
  • Kubernetes
  • Docker
  • Visual Studio
  • Salesforce
EDUCATION TECHNOLOGY

Scaled LMS Delivery and Unified Service Workflows in Enterprise Systems

Blackboard sought capacity to advance its LMS while coordinating changes across ServiceNow and Salesforce. Our engineers partnered with in-house teams to build and test scalable applications, roll out new ServiceNow processes, and design integrations between Salesforce and tracker systems. Our work strengthened managed hosting, reduced incident friction, and kept the roadmap moving without interrupting users.

Blackboard

  • C#
  • .NET
  • ServiceNow
  • Salesforce
  • SQL Server
  • Java
  • Visual Basic
FINANCIAL SERVICES

Automated Near-Real-Time Price Updates and Modernized ETL on Azure

A global investment firm with $60B in assets needed faster security price ingestion and modernization of legacy workflows. Over 4 years, we delivered end-to-end business process automation and moved ETL to cloud services for real-time processing. We also added month-end automations for timely reporting while stabilizing the existing web ERP.

  • C#
  • .NET
  • Azure
  • SQL Server
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Looking for a team with this kind of track record? Tell us more about your C# needs.

Talk to an expert

Flexible engagement models

Need C# development expertise?
Plug us in where you need us most.

We customize every engagement to fit your workflow, priorities, and delivery needs.

Kick off C# projects in 2-4 weeks.

We have reps across the US.

Speak with a client engagement specialist near you.

  1. Discuss solutions and decide team structure.

    Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.

  2. Onboard your team and get to work.

    With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.

  3. We track performance on an ongoing basis.

    We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.

AI Experts

Work with AI-augmented developers.

Every developer we provide uses modern AI coding tools to ship faster than ever while producing cleaner, more consistent code.

Tools for C# development

The ecosystem we use for C# projects:

We build with stable, well-supported tools designed for long-term reliability. Standardized practices keep delivery consistent and reduce the risk of tech debt as projects scale.

We align to supported runtime releases and set version windows to avoid surprise deprecations. Upgrade paths are rehearsed with compatibility checks and performance baselines before cutover. Legacy code stays stable while we document the path to the current C# and runtime.

ASP.NET CoreWPFWinUI.NET MAUIWindows Forms

Curious how we'd approach your C# development project?

Talk to an expert

What tech leaders ask about C# before pulling us in:

Our engineers average 10+ years of experience in the .NET ecosystem and pass a rigorous, multi-stage vetting process. Evaluations cover API design, async patterns, performance profiling, debugging under load, and more. Our vetting process is extremely selective. Fewer than 1% of over 2 million applicants are invited to join our team. When you work with us, you're working with top performers.

Explore related software delivery topics

Strengthen your delivery roadmap by pairing C# with adjacent services, industry expertise, and technology capabilities.

Accelerate C# development and delivery with our top-rated nearshore teams.

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