Hire Senior .NET Developers
US Timezone Aligned,
100% English Proficient,
Senior .NET Developers.
Building enterprise-grade systems with .NET requires more than knowing C# — it demands engineers who understand the full .NET ecosystem, design for scalability and long-term maintainability, and know how to deliver robust, high-performance applications that hold up under real production demands. Coderio gives you immediate access to senior .NET developers, rigorously vetted, nearshore, and ready to add value from day one.
.NET Staff Augmentation
★ ★ ★ ★ ★ 4.9 Client Rated
TRUSTED BY THE WORLD’S MOST ICONIC COMPANIES.
.NET Staff Augmentation
★ ★ ★ ★ ★ 4.9 Client Rated
.NET Staff Augmentation Made Easy.
.NET Staff Augmentation Made Easy.
Smooth. Swift. Simple.
Discovery Call
We are eager to learn about your business objectives, understand your tech requirements, and the specific .NET development expertise your team needs.
Team Assembly
We can assemble your team of experienced, timezone-aligned, expert .NET developers within 7 days.
Onboarding
Our expert .NET developers can quickly onboard, integrate with your team, and add value from the first moment.
About .NET Staff Augmentation.
Why Hire .NET Developers Through Coderio.
.NET Velocity Without the Hiring Risk
Skip months of recruiting in an enterprise technology market where finding a genuinely senior .NET engineer — one who understands the CLR deeply, designs clean architectures in ASP.NET Core, and can own a complex enterprise backend without hand-holding — takes significantly longer than most hiring managers anticipate. Our pre-vetted .NET engineers are ready to join your team within 7 days, fully aligned with your timezone, operating within your existing toolchain and processes, and contributing to real backend decisions from the first sprint. When your delivery roadmap cannot wait for a three-to-four month hiring process, that speed advantage determines whether you ship on time or not.
Senior Depth, Not Junior Guesswork
Every .NET developer in our network has a minimum of 7 years of hands-on production experience. These are engineers who have navigated the full complexity of enterprise .NET — ASP.NET Core architectures under real production load, Entity Framework Core query optimization on large datasets, async/await pitfalls that surface only under concurrency, and the organizational dynamics of working in large C# codebases maintained across multiple teams over multiple years. They have already encountered and resolved the expensive problems that junior engineers discover on your production system — and built the engineering judgment to prevent them from recurring.
Nearshore, Not Offshore
Our .NET developers operate from six Latin American development centers — Buenos Aires, Medellín, Lima, Santiago, Mexico City, and Montevideo — providing full real-time collaboration with your US-based team throughout the working day. Enterprise .NET development requires continuous coordination with frontend teams consuming your APIs, DevOps engineers managing Azure deployments, architects governing service boundaries, and product stakeholders whose requirements evolve mid-sprint. Engineers whose working day ends before your morning standup cannot participate in those conversations — and the quality of backend decisions made without real-time engineering input consistently reflects that absence throughout the delivery lifecycle.
You Stay in Control
.NET staff augmentation keeps your developers fully integrated into your team — following your branching conventions, operating within your Visual Studio or Rider environment, attending your sprint ceremonies, and building against your architecture guidelines and coding standards. There are no external project management layers inserted between you and the engineers making backend decisions, no delivery handoffs that strip you of visibility into what is being built and why, and no vendor-side prioritization choices that override your roadmap. You own the architecture, the codebase, and the direction. Our engineers execute to your standards with full transparency at every stage of the engagement.
Enterprise-Tested Engineering Standards
Our engineering practices were shaped by sustained engagements with enterprise clients including Coca-Cola, FedEx, Cinemark, Santander, and Avon — organizations where .NET backend quality, reliability, and long-term maintainability are enforced at the highest level. The Cinemark ticket-purchasing platform, FedEx's logistics backend systems, and the Avon self-service customer platform were all delivered with Coderio .NET engineering involvement. The same standards applied to those programs — rigorous code review, comprehensive automated testing, Clean Architecture principles, security-by-design, and full documentation — apply to every .NET developer we place, regardless of your organization's scale or your project's current phase.
Access to Deep .NET Ecosystem Specialization
The .NET ecosystem spans a broad and evolving range of frameworks, patterns, and platform capabilities — ASP.NET Core and Minimal APIs for backend services, Blazor for server-side and WebAssembly frontend development, SignalR for real-time communication, Dapr for distributed application runtime, MassTransit and NServiceBus for enterprise messaging, MAUI for cross-platform native applications, and the full spectrum of Azure-native integrations from Azure Service Bus to CosmosDB to Azure AD. Genuine production depth across this ecosystem is not common in the general .NET developer market. Staff augmentation gives you targeted access to engineers with the specific .NET platform depth your current program phase requires, matched precisely to your stack and your need.
Rigorous Vetting That Evaluates Architecture Judgment, Not Just C# Syntax
Finding a .NET developer who can own an enterprise backend — design maintainable Clean Architecture solutions, reason through CLR-level performance trade-offs, and make sound decisions under real production constraints — requires an evaluation process that goes significantly beyond verifying that a candidate can scaffold an ASP.NET Core project or write a LINQ query. Our selection process combines technical screening, real C# codebase review, and deep technical interviews conducted by senior .NET engineers, assessing depth across architectural pattern selection, Entity Framework Core optimization, distributed system design, async programming correctness, and the software engineering judgment that determines whether a .NET system remains performant and maintainable as complexity grows over years.
English Fluency and Communication Quality Held to the Same Standard as Technical Depth
Nearshore delivery works because our engineers communicate as genuine team members. Every .NET developer we place has been evaluated for professional English fluency, proactive communication habits, and the ability to integrate fully into your team's daily workflows — contributing to architecture discussions, raising blockers before they become delivery problems, and documenting decisions in a way that the broader team can understand and build on. For enterprise .NET development — where backend design decisions frequently need to be explained clearly to frontend teams, product stakeholders, and security reviewers — communication quality is as commercially important as ASP.NET Core proficiency. We assess both to the same standard throughout our selection process.
Backed by the Full Power of Coderio's Engineering Community
When you hire a .NET developer through Coderio, you are not getting an isolated backend engineer. Our Guilds and Chapters model ensures that the collective knowledge of Coderio's entire engineering community — spanning Azure infrastructure, data engineering, security, DevOps, frontend, and AI integration via Semantic Kernel — is available to the .NET developer working on your system. When a challenge arises that extends beyond the .NET layer — an Azure infrastructure decision with application-layer implications, a SQL Server performance problem requiring query plan analysis, a security control with compliance requirements — the broader community is available to support without requiring a separate engagement. Our COO, CTO, Subject Matter Expert, and Service Delivery Manager also participate actively in oversight, quality assurance, and strategic alignment throughout the engagement.
.NET Development Across the Full Enterprise Ecosystem.
.NET systems don’t run in isolation. Our developers bring deep expertise integrating .NET backends with the data infrastructure, cloud platforms, messaging systems, and frontend applications your product depends on. Whether your team runs an ASP.NET Core microservices architecture, a legacy .NET Framework enterprise application on a modernization path, a Blazor-powered frontend, or a hybrid cloud platform on Azure, our .NET engineers know how to fit in and deliver.
The .NET Tech Stack Our Developers Master
- Core Language & Runtime: C#, .NET 6/7/8/9, .NET Standard, .NET Framework (legacy), F# (where applicable), CLR internals, async/await, LINQ, generics, records, pattern matching
- Frameworks: ASP.NET Core, ASP.NET MVC, ASP.NET Web API, Blazor (Server and WebAssembly), Minimal APIs, gRPC with ASP.NET Core
- API Design: REST, GraphQL (Hot Chocolate, Strawberry Shake), gRPC, SignalR (WebSockets), OpenAPI/Swagger, OData
- ORM & Data Access: Entity Framework Core, Dapper, ADO.NET, NHibernate, raw SQL, repository and unit of work patterns
- Databases: SQL Server, PostgreSQL, MySQL, Oracle, MongoDB, Redis, CosmosDB, Azure SQL, SQLite
- Authentication & Security: ASP.NET Core Identity, OAuth 2.0, OpenID Connect, JWT, IdentityServer, Azure AD / Entra ID, Windows Authentication, OWASP practices
- Messaging & Streaming: MassTransit, NServiceBus, Azure Service Bus, Azure Event Hub, RabbitMQ, Apache Kafka, AWS SQS
- Microservices & Architecture: Clean Architecture, Domain-Driven Design (DDD), CQRS, MediatR, Event Sourcing, Vertical Slice Architecture, Dapr
- Testing: xUnit, NUnit, MSTest, Moq, FluentAssertions, Bogus, Testcontainers, SpecFlow, integration and contract testing
- Performance & Observability: BenchmarkDotNet, dotnet-trace, dotnet-counters, OpenTelemetry, Application Insights, Sentry, Datadog, Seq, Serilog
- Containers & Orchestration: Docker, Kubernetes, Helm, Azure Kubernetes Service (AKS), AWS ECS
- CI/CD: GitHub Actions, Azure DevOps, GitLab CI, Jenkins, Octopus Deploy
- Cloud Platforms: Azure (App Service, AKS, Azure Functions, CosmosDB, Service Bus, Azure SQL), AWS (ECS, RDS, Lambda with .NET), GCP (Cloud Run, Cloud SQL)
- Frontend Integration: Blazor, React, Angular, Vue, MAUI (cross-platform), WPF, WinForms (legacy)
- Version Control: Git, GitHub, GitLab, Azure Repos, Bitbucket, NuGet
When Companies Hire .NET Developers Through Coderio.
Building or Scaling Enterprise Backend Systems in .NET
.NET is one of the most capable and mature platforms for enterprise backend development — consistently delivering among the highest performance scores in independent benchmarks, backed by Microsoft's long-term investment, and supported by a rich ecosystem of frameworks and tooling that cover every enterprise requirement. When your product demands reliable, high-throughput APIs, complex domain logic that must remain comprehensible and testable as it grows across a large team, or backend services that need to integrate reliably with Microsoft enterprise systems including SQL Server, Azure Active Directory, and SharePoint, our .NET developers design and build it with the architectural depth and engineering discipline the platform demands.
Modernizing a Legacy .NET Framework Application
Many organizations are running critical business systems on .NET Framework 4.x — applications built in the years before cross-platform .NET existed, often coupled tightly to Windows infrastructure, running synchronous codebases that block under load, and maintained by a shrinking pool of engineers who are increasingly hard to hire. Our developers execute incremental modernization strategies on exactly these systems: migrating from .NET Framework to .NET 8, introducing async/await throughout the request pipeline, refactoring toward Clean Architecture and proper separation of concerns, containerizing workloads with Docker, and establishing automated testing frameworks — all without disrupting the production systems that the business depends on continuously throughout the migration process.
Building .NET Microservices With Clean Architecture and DDD
The .NET ecosystem has matured significantly around Domain-Driven Design, CQRS, and Clean Architecture — and ASP.NET Core combined with MediatR, FluentValidation, and Dapr provides one of the most complete toolchains available for building maintainable, independently deployable microservices at enterprise scale. Our engineers design and implement .NET microservices that reflect genuine domain modeling: bounded contexts with well-defined API contracts, aggregate roots that enforce business invariants, event-driven integration using Azure Service Bus or MassTransit, and observability instrumentation using OpenTelemetry from day one. The result is a microservices architecture that your team can confidently operate and extend, not one that fragments into distributed monolith patterns under real delivery pressure.
Building Azure-Native .NET Applications
.NET and Azure are Microsoft's deeply integrated stack, and building cloud-native .NET applications that take full advantage of Azure's managed services requires engineers who understand both the .NET platform and the Azure service landscape in depth. Our developers design and implement Azure-native .NET architectures using App Service, Azure Kubernetes Service, Azure Functions, Azure Service Bus, CosmosDB, Azure SQL, and Azure Active Directory — selecting and configuring the right combination of services for your application's specific workload patterns, cost requirements, and compliance obligations. For organizations running on Microsoft enterprise agreements, maximizing the value of their Azure investment through well-architected .NET applications is one of the highest-return engineering programs available.
Building Real-Time Features With SignalR
SignalR is .NET's production-proven solution for real-time, bidirectional communication between server and client — and it has powered live dashboards, collaborative editing tools, chat applications, multiplayer game backends, and financial data streaming systems at significant scale. Our developers design and implement SignalR-based real-time features with proper connection management, group-based message broadcasting, reconnection handling, and horizontal scaling through Azure SignalR Service for applications that must maintain real-time connections across multiple server instances. We also integrate SignalR with your existing ASP.NET Core authentication and authorization infrastructure to ensure that real-time channels respect the same security controls as your REST API endpoints.
Filling a Critical .NET Engineering Gap
A key .NET engineer is leaving, going on extended leave, or has become unavailable at a moment when your backend roadmap cannot absorb the loss of their capacity or institutional knowledge. .NET backend knowledge is frequently concentrated — the Entity Framework Core configuration conventions, the MediatR pipeline behaviors, the Azure Service Bus consumer setup, and the ASP.NET Core middleware ordering assumptions that an enterprise .NET codebase accumulates are often known deeply by a small number of engineers, making their sudden unavailability more disruptive than it might appear. We provide immediate, qualified coverage that keeps your .NET services running, your roadmap progressing, and your remaining team from absorbing an unsustainable workload increase during the permanent hiring search.
Reinforcing for a High-Stakes .NET Launch or Migration
Major backend service launches, .NET Framework to modern .NET migrations, Azure infrastructure transitions, enterprise system integration go-lives, and large-scale API platform releases all share one defining characteristic: the consequences of a backend engineering failure during these moments are significantly higher than during routine development sprints. A .NET Framework migration that introduces session management regressions, an ASP.NET Core upgrade that breaks authentication middleware behavior under production load, or an Azure Service Bus integration that drops messages during a high-volume business event all carry costs — in customer impact, remediation effort, and organizational trust — that dwarf the cost of the engineering reinforcement that would have prevented them.
Building AI-Integrated .NET Applications With Semantic Kernel
Microsoft's Semantic Kernel is the primary SDK for integrating AI capabilities — including OpenAI, Azure OpenAI, and other LLM providers — into .NET applications, and it has matured rapidly into a production-capable framework for building AI-powered features, autonomous agents, and retrieval-augmented generation pipelines within existing ASP.NET Core applications. Our developers have production experience with Semantic Kernel integration, designing prompt templates, memory connectors, and plugin architectures that allow .NET applications to leverage AI capabilities in a structured, testable, and maintainable way — without the ad hoc API integration patterns that make AI features difficult to evaluate, monitor, and govern in production enterprise environments.
Building Cross-Platform Applications With .NET MAUI
.NET MAUI — Multi-platform App UI — is Microsoft's successor to Xamarin and the platform for building native iOS, Android, macOS, and Windows applications from a single C# and XAML codebase. For organizations with existing .NET backend teams, MAUI provides a compelling option for mobile and desktop development that allows engineers to work in familiar tooling and share business logic between server and client without the context-switching overhead of maintaining separate Swift, Kotlin, or React Native codebases. Our developers bring MAUI production experience including platform-specific handler customization, native API integration, offline data synchronization using SQLite, and the CI/CD pipeline configuration that makes MAUI deployment to App Store, Google Play, and the Microsoft Store reliable and repeatable.
.NET FAQs.
- What is the difference between .NET Framework and .NET Core / .NET 6+?
.NET Framework is Microsoft’s original Windows-only runtime, first released in 2002, and remains in widespread use across enterprise systems. It is no longer receiving feature updates — only security patches. .NET Core was Microsoft’s cross-platform, open-source reimagining of .NET, which has since been unified into a single platform called simply .NET (version 5 and above). Modern .NET runs on Windows, Linux, and macOS, supports containerization, delivers significantly better performance than .NET Framework, and is the platform for all new Microsoft investment. If your systems are still on .NET Framework, migrating to modern .NET is a strategic priority our developers can help you execute. - What is the difference between ASP.NET Core MVC and Minimal APIs?
ASP.NET Core MVC is the traditional, convention-based approach to building web applications and APIs in .NET — with controllers, action methods, model binding, and view rendering for web UIs. Minimal APIs, introduced in .NET 6, provide a lightweight, function-based approach for building HTTP APIs with less ceremony and lower overhead, well-suited for microservices and simple API endpoints. Many .NET 8 applications use both patterns within the same project. Our developers are experienced in both and can advise on the right approach for your specific use case. - What is Clean Architecture and why do your .NET developers apply it?
Clean Architecture is an architectural pattern that separates application code into concentric layers — domain, application, infrastructure, and presentation — with dependencies pointing inward toward the core business logic. It ensures that business rules are independent of frameworks, databases, and external services, making applications significantly easier to test, maintain, and evolve over time. The .NET ecosystem has embraced Clean Architecture widely, and our developers apply it as a default for new projects and introduce it incrementally during legacy modernization engagements. - Can your .NET developers work with our existing SQL Server or Azure infrastructure?
Yes. Our engineers have extensive experience with SQL Server at all scales — query optimization, index tuning, stored procedures, replication, and migration strategies. For Azure infrastructure, we work with the full range of Azure managed services that .NET applications typically depend on, including Azure SQL, Azure Service Bus, CosmosDB, Azure AD, App Service, and AKS. We work within your current environment rather than requiring a rebuild from scratch. - How do your developers approach performance optimization in .NET?
Our engineers profile .NET applications using dotnet-trace, dotnet-counters, and BenchmarkDotNet to identify memory allocations, garbage collection pressure, thread contention, slow database queries, and inefficient async patterns. They apply techniques including Span<T> and memory pooling for allocation reduction, compiled queries in Entity Framework Core, response caching and output caching, async throughout the request pipeline, and connection pooling — addressing performance at the root rather than applying surface-level fixes. - Is .NET a good choice for new backend projects in 2025?
Yes. Modern .NET — particularly .NET 8 and the upcoming .NET 9 — is one of the highest-performing backend platforms available, consistently ranking at or near the top of the TechEmpower Framework Benchmarks. Microsoft’s continued investment in performance, cross-platform support, cloud-native capabilities, and AI integration via Semantic Kernel makes .NET a strong, future-proof choice for new enterprise backend projects. Combined with C#’s continued language evolution — records, pattern matching, nullable reference types, primary constructors — modern .NET is a significantly more productive and expressive platform than it was five years ago.
Success Cases.
Success Cases.
Helping businesses of all sizes across the Americas flourish.
Helping businesses of all sizes across the Americas flourish.
Only the Best .NET Developers.
Our rigorous vetting process does the hard work of finding the top developers.
Finding a .NET developer who can truly own an enterprise backend (not just implement controllers) requires evaluating depth that framework familiarity alone doesn’t guarantee. Our selection process combines technical screening, real code review, and deep technical interviews conducted by senior engineers, assessing .NET-specific expertise across C# language depth, ASP.NET Core architecture, data access patterns, distributed system design, performance optimization, and production operations. We don’t just verify that a developer knows Entity Framework or can scaffold an ASP.NET Core project; we verify that they understand the CLR, can design maintainable architectures at scale, reason through concurrency and performance challenges, and make sound technical decisions under real production constraints.
What sets our process apart is the bar we hold on the non-technical side. Working nearshore demands engineers who communicate proactively, adapt to your workflows, and operate as true team members rather than remote contractors. Every .NET developer we place has been evaluated for English fluency, responsiveness, and professional maturity. Because technical depth without collaboration is only half the equation.
Our Superpower.
We build high-performance software engineering teams better than everyone else.
Expert Developers
Our software developers have extensive experience in building modern applications, integrating complex systems, and migrating legacy platforms. They stay up to date with the all the latest tech advancements to ensure your project is a success.
High Speed
We can assemble your software development team within 7 days from the 10k pre-vetted engineers in our community. Our experienced, on-demand, ready talent will significantly accelerate your time to value.
Full Engineering Power
Our Guilds and Chapters ensure a shared knowledge base and systemic cross-pollination of ideas amongst all our engineers. Beyond their specific expertise, the knowledge and experience of the whole engineering team is always available to any individual developer.
Enterprise-level Engineering
Our engineering practices were forged in the highest standards of our many Fortune 500 clients.
Cross-industry Experienced Engineers
Our Engineering team has deep experience in creating custom, scalable solutions and applications across a range of industries.
Commitment to Success
We are big enough to solve your problems but small enough to really care for your success.
Client-Centric Approach
We believe in transparency and close collaboration with our clients. From the initial planning stages through development and deployment, we keep you informed at every step. Your feedback is always welcome, and we ensure that the final product meets your specific business needs.
Custom Development Services
No matter what you want to build, our tailored services provide the expertise to elevate your projects. We customize our approach to meet your needs, ensuring better collaboration and a higher-quality final product.
Extra Governance
Beyond the specific software developers working on your project, our COO, CTO, Subject Matter Expert, and the Service Delivery Manager will also actively participate in adding expertise, oversight, ingenuity, and value.
Hiring .NET Developers Through Coderio FAQs.
How quickly can I get a .NET developer?
In most cases, we can match you with a qualified .NET developer and have them onboarded within 7 days of your discovery call.
Do I interview the candidates before they join my team?
Yes. You will have the opportunity to meet and evaluate shortlisted candidates before making a final decision. If you choose to skip the interview stage and move directly to onboarding, we can have a pre-vetted .NET developer on your team even faster.
Can I hire more than one .NET developer at a time?
Absolutely. We can assemble a complete .NET engineering team or provide individual specialists depending on your needs, scaling up or down as your platform demands change.
What happens if the developer isn't a good fit?
We stand behind our placements. If a developer isn’t meeting expectations, we will work with you to find a replacement promptly.
Is there a minimum engagement period?
We accommodate both short-term and long-term engagements. Contact us to discuss the arrangement that best fits your situation.
Can I scale my .NET team up or down as the project evolves?
Yes. One of the core advantages of staff augmentation is flexibility. You can add .NET developers as your platform needs grow and reduce the team size when a project phase is complete — without the overhead or risk of permanent hiring decisions.
Will my .NET developer work exclusively with my team?
Yes. When you hire a .NET developer through Coderio, that engineer is dedicated exclusively to your team and your project. They integrate into your workflows, attend your standups, and operate as a full member of your organization.
Do your .NET developers sign NDAs and IP agreements?
Yes. All Coderio developers are covered by confidentiality and intellectual property agreements before beginning any engagement, ensuring your backend architecture, proprietary business logic, and codebase are fully protected from day one.
Book a Discovery Call.
The talent you need is just a call away, ready to become a seamless extension of your team.