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.
4.9/5
60 client reviews
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.
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.
Delivering on the cloud's promise is hard: costs spiral, compliance is complex, and availability is never automatic. We build and manage cloud-native platforms that run your .NET applications securely. We codify your infrastructure, containerize services for portability, and implement robust observability and cost controls. You get a stable, scalable, and audit-ready platform with predictable operational overhead.
Dropped events, data corruption, and processing bottlenecks can undermine your data strategy. We build high-throughput data and event pipelines in C# and engineer for resilience. Our developers address common failure modes like back-pressure and poison messages with clear strategies for idempotency, replay, and dead-lettering. You get reliable, observable pipelines that deliver timely data for analytics and operational workflows.
Outdated runtimes create security risks, block new features, and make hiring difficult, as many engineers avoid legacy stacks. We execute phased migration strategies using compatibility layers and parity tests to de-risk the process, ensuring minimal disruption during cutover. You get a secure, high-performance platform on a supported runtime that attracts talent and enables your team to ship modern features confidently.
When a web app isn't enough, you need a rich client that is fast, reliable, and works offline. We build high-performance applications with C#, from mission-critical Windows software to cross-platform mobile apps using .NET MAUI. Our C# developers architect for performance and maintainability, separating domain logic from the UI and engineering robust data synchronization. You get a high-performance application that stands up to years of continuous use.
Brittle scripts, manual approvals, and environment drift slow down releases and create risk. We build the DevOps automation that reliably ships your C# applications. Our engineers implement robust CI/CD pipelines, codify your infrastructure, and wire in telemetry. You get a predictable, auditable path to production that lets your teams ship faster and with greater confidence.
Off-the-shelf software often forces you to change your processes, creating friction and inefficiency. We build custom line-of-business applications that model your unique workflows, architecting custom ERP modules, CRM systems, and HRM platforms that capture complex domain logic and integrate seamlessly with your existing systems. You avoid tradeoffs and get software tailored to your operations.
Getting a model from a data scientist's notebook into a production system is a common failure point. We integrate AI and machine learning capabilities directly into your C# applications. Our developers build the APIs and data pipelines necessary to serve models for inference, manage training data, and create feedback loops using ML.NET and cloud AI services. You can ship intelligent, data-driven features that improve user experience and business outcomes.
Their engineers perform at very high standards. We've had a strong relationship for almost 7 years."
The best partnerships are the ones you don't have to worry about. We deliver the kind of technical execution and reliability that builds long-term trust. It's why clients consistently praise our work quality and performance.
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
Top 1% Senior C# Engineers
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.
Enterprise-Grade Delivery
We've delivered .NET solutions for dozens of global enterprises that cannot afford downtime. This experience means we understand the governance processes, code review standards, and release controls that enterprise programs require. You get engineers who know how to navigate complex environments and deliver systems that satisfy both technical and business requirements.
Security and Compliance Expertise
We've delivered hundreds of projects in highly regulated industries, where HIPAA, SOC 2, and ISO 27001 compliance isn't optional. Our engineers are experts at building audit-ready systems, embedding security controls, audit logging, and compliance documentation directly into the development process. You get proven expertise that reduces risk and accelerates certification.
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.
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.
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.
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.
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.
Core Runtimes and Frameworks
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.
Web and Services Development
APIs start with contracts. We publish OpenAPI first, define versioning rules, and make idempotency and timeouts non-negotiable. Resilience is designed in with retries, circuit breakers, and graceful degradation.
Integration and Messaging
Interfaces carry SLAs, backoff policies, and dead-letter handling by default. We enforce schema governance and trace every hop so failures are diagnosable, not mysterious. Broker choice follows delivery guarantees and throughput targets.
Data and Storage
Workloads drive the stack. We use EF Core, where productivity and migrations help, Dapper where hot paths need tight control. Migrations are versioned, indexes are reviewed under load, and pools are tuned with real traffic.
DevOps and Release Governance
Pipelines are code. We sign artifacts, promote through environments, and require rollback plans that are tested, not theoretical. Trunk-based development and feature flags keep releases small and reversible.
Quality, Testing, and Validation
We agree on coverage targets and acceptance criteria up front. Tests span unit, integration, contract, and UI layers with fast feedback on each pull request. Static analysis and quality gates stop regressions before staging.
Identity, Security, and Compliance
Identity integrates with enterprise providers and short-lived tokens. Secrets sit in managed vaults and dependency scans run in CI. We capture approvals, scan results, and change logs as audit evidence for SOC 2, HIPAA, ISO 27001, and GDPR.
Operations and Observability
Telemetry comes first. We instrument with OpenTelemetry so traces, metrics, and logs land in one place, with alerts tied to SLOs. Runbooks define escalation, and post-incident reviews feed fixes back into code and pipelines.
Cloud and Infrastructure
We prefer managed services when they meet latency and compliance goals, then container platforms where control is required. Capacity, autoscaling, and DR are defined up front and tested with realistic failure drills.
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.
Get C# results you can stand behind.
Need extra C# expertise?
Plug us in where you need us most.
We customize every engagement to fit your workflow, priorities, and delivery needs.
Staff Augmentation
Get senior, production-ready developers who integrate directly into your internal team. They work your hours, join your standups, and follow your workflows—just like any full-time engineer.
Dedicated teams
Spin up focused, delivery-ready pods to handle full builds or workstreams. Together we align on priorities. Then our tech PMs lead the team and drive delivery to maintain velocity and consistency.
Software outsourcing
Hand off the full project lifecycle, from planning to deployment. You define the outcomes. We take full ownership of the execution and keep you looped in every step of the way.
Kick off C# projects in 2-4 weeks.
We have reps across the US.
Speak with a client engagement specialist near you.
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.
With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.
We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
Global companies have trusted us to build and scale C# solutions for over a decade.
Excellence.
Our minimum bar for client delivery.
Over 130 awards, accolades, and achievements showcase our quality and commitment to client success.
What tech leaders ask about C# before pulling us in:
How senior are your C# and .NET developers, and how selective is hiring?
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.
Will we work with full-time staff or contractors?
Only with BairesDev’s full-time software engineers. Our senior developers embed with your team and align with your workflows and code standards, with no risk of subcontractor hand-offs. Our model ensures long-term stability, deep project knowledge, and consistent ownership that is nearly impossible to achieve with a transient or freelance workforce.
Can you staff cross-functional pods across backend, desktop, and mobile?
Yes. With 4000+ professionals across the SDLC, we assemble pods with a tech lead, C# engineers for API or desktop, mobile specialists, QA, and DevOps. Team composition adjusts as the roadmap evolves while preserving ownership and documentation continuity.
How quickly can you start, and what is the US hours overlap?
Our developers typically onboard in 2–4 weeks and ramp quickly due to their experience, typically reaching full productivity within the first sprint. Our nearshore teams work in US time zones, providing overlap for standups, code reviews, incidents, and releases. This means real-time collaboration without the delays that come from offshore coordination.
Who owns the intellectual property?
IP ownership is clearly defined in our contracts, which are governed by US law and jurisdiction. All source code, documentation, and deliverables created during the engagement belong to you exclusively. There's no ambiguity or jurisdictional risk.
How do you keep delivery predictable?
Our senior engineers integrate into your existing workflows and tools, bringing years of experience delivering complex software at scale. They ramp up quickly, adapt to your processes, and deliver reliably without disrupting your operations.
Our delivery managers also monitor our engineers’ performance, track progress, and flag risks early so small issues don’t turn into delivery delays. Through consistent communication and proactive alignment, we keep timelines and expectations steady across every engagement.
Can you integrate with our toolchain and release process?
Yes. We work inside your repos and CI, follow your branching model, and publish artifacts to your registries. We document rollback plans and operate within your change windows.
How do you ensure team stability and handle personnel changes?
We build teams for the long term, reflected in our 96% retention rate. All project knowledge is documented continuously. In the rare event of a personnel change, our 4,000+ engineer bench and active hiring pipeline let us backfill roles fast. We manage structured handoffs with overlapping periods to ensure zero loss of momentum or context.
How does your team handle the specific demands of regulated industries?
We’ve delivered hundreds of projects for highly regulated industries such as healthcare and finance. Our engineers build audit-ready systems from the start, embedding security controls, structured logging, and evidence generation directly into the development process. This means your applications meet regulatory requirements without delays or surprises during certification.
How is quality assurance integrated into your development process?
Quality is embedded across the entire development process. We define acceptance criteria, conduct peer code reviews, and validate architecture decisions. Our CI/CD pipelines enforce automated testing gates, while dedicated QA engineers perform tests and analyses. This layered approach catches issues early and ensures your software meets both functional requirements and production-grade reliability standards.
See why the biggest names in tech trust us with C# development.
Let's Discuss Your C# Project
