In 2025, .NET developers are at the top of most in-demand tech roles. .NET is in the middle of modernization projects, enterprise upgrades, and new builds. The bottleneck is still skills. Not just .NET syntax, but real-world experience with APIs, Azure, Docker, distributed architecture, and increasingly, AI workloads. Companies want developers who have seen scale. They also want to move fast.
This article is based on the .NET software development portfolio of Belitsoft, a custom software development firm. This agency proved its 20+ years of expertise with a 4,9/5 score on the most credible review platforms: Gartner, G2, and Goodfirms. The clients have partnered with Belitsoft for 5 years on average. Their .NET software engineers follow the latest trends in Microsoft production and use C#-based cross-platform .NET framework to build mobile, desktop, web (using ASP.NET Core extension), cloud apps, and microservices.
This custom .NET development company creates high-quality, secure, and easy-to-use cloud-native & cloud-ready .NET solutions within budget and in time.
Key Industries Driving .NET Development Demand
Finance
Finance hires .NET to build trading platforms, payment gateways, fraud engines-all require low latency, strict access control, and regulatory compliance. Teams need developers who can implement role-based access, encryption, and audit-ready logging by default. Large banks are refactoring legacy .NET Framework apps into .NET 9/10. Fintechs build greenfield systems with modern .NET stacks because they want speed without losing reliability. The language is familiar, but the workloads are evolving – real-time, API-first, cloud-native.
Healthcare
Healthcare needs compliance at every layer. Patient data, scheduling, billing, referrals – all governed by HIPAA, HL7, FHIR. .NET is used to wire those systems together without creating new privacy risks. developers are expected to know how to enforce access policies and build secure patient-facing UIs. The architecture often spans old EHRs and new cloud-based services. That complexity is where .NET fits. It works across environments, supports long-lived systems, and integrates with enterprise identity platforms.
Retail
Retail hires .NET for throughput and system glue. POS systems, inventory sync, CRM tools, ERP extensions – most sit on older .NET codebases or newer services built on Core. The sector is moving toward omnichannel, but the backend systems haven’t caught up. .NET developers are hired to bridge platforms, integrate data flows, and harden e-commerce services for peak traffic. It’s not about greenfield anymore. It’s about stability while migrating. Developers who can ship features without taking systems down win here.
Manufacturing
Manufacturing uses .NET to control physical systems. Factory dashboards, MES tools, PLC integrations, data logging – all built with Windows-based environments and custom hardware dependencies. .NET lets teams write systems that talk to machines. It’s stable under load, runs locally, and integrates with industrial protocols. Logistics adds another layer: routing engines, freight tracking, client portals. These companies hire .NET developers who can manage message queues, process telemetry, and debug edge-case failures under pressure.
Government
Government systems are .NET by default. Agencies need frameworks that are secure, supportable, and enterprise-grade. Tax systems, license portals, voter registration, case management – all built to last 10+ years. Many agencies are migrating to Azure Government, and .NET is the default language of that migration. Vendors bid government contracts with .NET in the proposal because it checks every compliance box. Developers here need to write stable, testable code that meets security standards.
SaaS
SaaS companies want performance and predictability. Startups use .NET Core to build multi-tenant architectures with tight API latency. Azure is often the stack. AI/ML services – increasingly built with ML.NET or integrated via API – need compute-efficient, containerized deployments. Companies building platforms, not just apps, look for .NET developers who can design services that scale, handle complex auth, and integrate with billing or analytics.
.NET Development: From Startups to Enterprises
Startups
Startups use .NET to build first versions. It’s common in fintech, healthtech, and SaaS – where teams need full-stack frameworks, and cross-platform support. Most startups deploy on cloud containers and want backend APIs, authentication, and database access in one place. .NET Core gives them that. One full-stack .NET developer can build the backend and connect the front-end using Blazor or React.
Small and mid-sized companies
Small and mid-sized companies use .NET to build business systems they can’t buy off the shelf. A regional logistics firm may need a custom dispatch interface. A consulting firm may want to extend its CRM with proprietary features. These companies usually run on Microsoft systems already – so .NET fits. They hire contractors or vendors to build internal tools, client portals, and reporting dashboards. In 2025, most still prefer platforms with a long support cycle, a stable talent pool, and predictable hosting costs. .NET delivers all three.
Enterprises
Enterprises never left .NET. It runs core systems: HR, finance, inventory, pricing engines. In 2025, those systems are being updated – not replaced. Companies migrate legacy apps from .NET Framework to .NET Core, rebuild internal portals in ASP.NET, and write new services as cloud-native APIs. These systems don’t move quickly, but they do move – and .NET developers handle the migration path. Most large organizations use .NET because it plays well with everything else in their stack – from SAP and Oracle to Active Directory and Azure. Microsoft support, internal familiarity, and audit alignment keep .NET in scope.
Nonprofits
Nonprofits don’t always build, but when they do, they use tools they can afford and support. Microsoft provides discounted licenses, Azure credits, and development tooling to this sector. As a result, nonprofits often choose .NET for donor management portals, volunteer scheduling, and reporting dashboards.
Most .NET developers aren’t hired directly by the client – they’re hired by consultancies. Those firms deliver .NET work to every sector: startups, SMBs, enterprise, government. The .NET services market is driven by these intermediaries. Clients just need someone who knows .NET
.NET Development: Most Requested Services
Web Application Development
Clients need internal portals, public-facing websites, partner dashboards, and API-connected single-page apps. Projects span e-commerce platforms, appointment schedulers, CMS replacements, and admin tools. The backend runs on ASP.NET Core. The frontend is often built in React, Angular, or Blazor – depending on team preference and client expectations. Enterprise teams also use Blazor when they want a full C# stack across client and server. Deliverables include deployed web apps, API layers, documentation, and front-end/back-end separation for reuse. MVC structure, API-first architecture, security hardening, and performance tuning are assumed.
Enterprise Systems and Integrations
Clients ask for help rewriting legacy apps (usually VB.NET or older ASP.NET) into .NET Core web services or restructured cloud-native apps. Some just need middleware – building .NET APIs to connect ERP, CRM, or accounting platforms. A typical use case: surface data from Oracle or SQL Server into a custom UI, or link Salesforce with a proprietary system through a .NET API gateway.
API and Microservices
Many clients break apart monoliths or design for integration – and that means building APIs. .NET is commonly used to write REST endpoints, define OpenAPI specifications, and deploy lightweight microservices. Industries like fintech, logistics, and SaaS ask for .NET-based APIs that serve mobile apps, internal tools, and partner platforms. Security is assumed – OAuth2, JWT, scoped tokens. Clients often expect the microservices to be containerized (Docker), documented (Swagger), and connected to managed cloud services. Some want Azure Functions or AWS Lambda implementations – event-driven services in C# – for isolated tasks.
Cloud-Native Application Development
Clients designing for Azure, AWS, or GCP expect applications to be built cloud-first – not just deployed to the cloud, but architected for scale. .NET developers in this space build stateless services, use managed cloud databases (SQL, Cosmos, Dynamo), and integrate alerting from day one. Some projects involve writing new SaaS products. Others involve replatforming existing systems. Deliverables here go beyond the app itself – they include IaC templates (Terraform or ARM), container configs, and operational runbooks. Clients ask for CI/CD pipelines, test automation, and health monitoring.
Desktop and Cross-Platform Applications
Some apps still need to run on desktops. Factory control systems, trading platforms, engineering tools – they don’t migrate well to browsers. .NET covers this with WPF, WinForms, and MAUI. In 2025, most desktop projects use WPF on .NET 6+ for Windows, or MAUI for cross-platform delivery. .NET teams in this space ship installers, help configure update mechanisms, and build UIs optimized for local performance. Clients may also request mobile compatibility – building with MAUI to target Android, iOS, and Windows from a shared codebase.
Mobile Applications
When clients want a mobile app and already use .NET in the backend, they sometimes extend it to the frontend. Xamarin is mostly legacy. .NET MAUI has taken over for native cross-platform mobile development. Clients ask for apps that reuse backend models, integrate with APIs, and support offline access or push notifications. A typical pattern: a hospital commissioning a mobile patient portal that matches the existing .NET backend. These builds often require store deployment (App Store, Play Store), platform compliance (iOS/Android), and coordinated release cycles. The deliverables are mobile binaries, store deployment artifacts, and the full codebase – usually with shared libraries between web, mobile, and backend logic.
Data Analytics and AI Integration
Clients may not ask for “ML.NET” by name – but they ask for dashboards with predictive analytics, fraud scoring engines, or embedded AI assistants. .NET integrates with Azure Cognitive Services, OpenAI APIs, and ML.NET pipelines. A logistics firm may request a route optimization engine inside an existing dispatch tool. A fintech may need a transaction classifier using a trained model. Deliverables include trained models, API integrations, processing scripts, and sometimes Power BI hooks or export formats. The AI itself may be built elsewhere – but .NET devs are responsible for wiring it in, securing it, and making it operational.
DevOps, Testing, and Maintenance
.NET service providers are now expected to configure pipelines (GitHub Actions, Azure DevOps, Jenkins), containerize apps, and deploy to production. Projects include test automation, load testing, monitoring setup, and incident response tooling. Clients expect comprehensive output: Dockerfiles, YAML build scripts, K8s manifests, alert rules, test case libraries. Maintenance contracts are common – covering bug fixes, security patches, and minor enhancements. Enterprises especially expect a tested, deployable unit with everything required for internal ownership. The ability to build, test, ship, and support .NET code in a repeatable way is now part of the base contract.
Expected Deliverables in .NET Development Projects (2025)
Source Code and IP
Clients expect full ownership of the code. That includes all source files, configuration, binaries, and assets. IP transfer is written into contracts and enforced at handover. Code belongs to the client. Established firms know this and deliver accordingly.
Documentation and Knowledge Transfer
Clients expect technical artifacts – architecture diagrams, API specs, inline comments, dependency maps – along with usage documentation and admin guides. For internal-facing apps, clients may also request user manuals or SOPs for operations. In larger builds, knowledge transfer sessions are part of the contract.
Testing and QA
Clients want to see what was tested, how, and what passed. That means unit test coverage, integration test reports, load test results, and summaries of UAT findings. For some projects, security audits or static code analysis are bundled in. A client reviewing QA output wants evidence that the system won’t fall over on day one – or leak data on day ten.
Deployment Scripts and Environment Configs
Clients expect delivery of scripts, templates, or instructions for provisioning infrastructure, deploying artifacts, and configuring environments. That may mean Dockerfiles, Helm charts, Azure DevOps pipelines, or Terraform stacks. In cases where client IT handles deployment, a step-by-step runbook is expected. A .NET build that can’t be deployed without a vendor on-call is a liability.
Timeline and Scope Discipline
Clients judge service quality by adherence to scope and schedule. That means hitting milestones, demoing increments, and handling change requests in writing. At the end of the engagement, all scoped items should be delivered, tested, and accepted.
Post-Deployment Support
Support after go-live is expected – even if limited. Clients want a defined window for warranty coverage, bug resolution, and post-launch triage. Critical sectors often require SLAs support. Some clients roll this into a maintenance retainer. Others expect a 30- or 60-day period of on-call support.
About the Author:
Dmitry Baraishuk is a partner and Chief Innovation Officer at a software development company Belitsoft (a Noventiq company). He has been leading a department specializing in custom software development for 20 years. The department has hundreds of successful projects in such services as healthcare and finance IT consulting, AI software development, application modernization, cloud migration, data analytics implementation, and more for US-based startups and enterprises.
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