Why .NET for FinTech and HealthTech Software
.NET is Microsoft’s open-source platform for building web, mobile, desktop, cloud, and IoT applications. It supports C#, F#, and Visual Basic, and runs on Windows, macOS, and Linux. For teams building financial software, .NET brings enterprise-grade security, native Azure integration, and a performance profile that handles high-throughput transaction processing. With .NET 8 (the current LTS release) and the broader ecosystem of ASP.NET Core, Entity Framework, and Azure services, teams get a single platform that covers everything from REST APIs and real-time dashboards to background job processing and machine learning inference.
Applications operating in .NET can be written in three programming languages: C#, F#, and Visual Basic. Moreover, the .NET platform is extended with additional tools, such as ASP.NET: an open-source framework for building web apps and services.
When it comes to developing software for financial services, security is one of the main concerns, making .NET a natural choice. It’s backed by the authority of one of the tech giants, is constantly updated and equipped with a set of advanced security features.
Main benefits of .NET include versatility, productivity, cross-platform support, and continuous evolution
This rich combination of languages, libraries and editors empowers developers and digital businesses alike. The .NET ecosystem can be the foundation of outstanding software of all kinds, including desktop, mobile, cloud computing, machine learning, and microservices.
Our .NET Development Services
Enterprise Web Applications
Full-stack web platforms built on ASP.NET Core with Razor Pages or Blazor for server-side and interactive UI. Admin panels, customer portals, internal tools, and compliance dashboards for banking, insurance, and healthcare organisations. Production-ready, with authentication, role-based access, and audit logging built in.
APIs and Microservices
High-performance REST and gRPC APIs using ASP.NET Core Web API. Service-to-service communication with Azure Service Bus or RabbitMQ. Containerised with Docker and orchestrated on Kubernetes or Azure AKS. For products built on a microservices architecture, .NET gives you speed without sacrificing type safety.
Cloud-Native Solutions on Azure
Azure Functions for serverless workloads. Azure App Service for managed hosting. Azure SQL, Cosmos DB, and Blob Storage for data. CI/CD through Azure DevOps or GitHub Actions. We design cloud infrastructure that scales automatically, keeps costs predictable, and meets compliance requirements for data residency and encryption.
Desktop and Cross-Platform Apps
.NET MAUI for cross-platform mobile and desktop apps from a single codebase. WPF and WinForms for Windows-specific tools. Ideal for internal business applications, trading terminals, and clinical workstations where performance and offline capability matter.
Data, Analytics, and ML
Entity Framework Core for data access. ML.NET for machine learning models running inside .NET applications. Integration with Azure Cognitive Services for document processing, sentiment analysis, and image recognition. For teams building data-driven FinTech products, .NET provides a single runtime from data ingestion to model serving.
Legacy .NET Modernisation
Migration from .NET Framework 4.x to .NET 8. Monolith-to-microservices decomposition. Strangler fig pattern implementations that let you modernise incrementally without a full rewrite. We’ve migrated production systems handling financial transactions without downtime.
Cloud-ready or cross-platform? .NET rocks!
Contact Code & Pepper to learn how to take full advantage of .NET development.
Quick guide to .NET development
Cross-platform
Build once, deploy anywhere. .NET 8 runs natively on Windows, macOS, and Linux. With .NET MAUI, a single codebase produces iOS, Android, Windows, and macOS apps. No more maintaining separate codebases for each platform.
Engaged community
Over 100,000 contributors on GitHub. Backed by Microsoft and the .NET Foundation. One of the largest open-source ecosystems in enterprise software, with regular releases and long-term support versions.
Top productivity
C# gives developers modern language features (async/await, pattern matching, nullable reference types) that reduce bugs and speed up development. Hot reload, integrated debugging in Visual Studio, and Roslyn analysers catch issues at write time, not at runtime.
Vast ecosystem
Over 350,000 packages on NuGet. Pre-built libraries for everything from payment processing and PDF generation to FHIR healthcare data standards and identity verification. Less custom code, faster time to market.
Performance-oriented
ASP.NET Core consistently ranks among the fastest web frameworks in TechEmpower benchmarks. For FinTech products handling thousands of transactions per second, that throughput translates directly into lower infrastructure costs and better user experience.
Cloud-ready
Native integration with Azure: App Service, Functions, AKS, SQL, Cosmos DB, Key Vault. One-click deployment from Visual Studio. CI/CD pipelines in Azure DevOps or GitHub Actions. .NET and Azure are built by the same company, and it shows.
From major national banks and business intelligence tools, up to all-in-one platforms
for financial services: .NET is the quiet hero behind the scenes.
With stable and secure solutions from .NET, such as managed runtime, you can write quality code resistant to threats. Microsoft’s attention to security and frequent updates reduce risk of cyber attacks or malicious code alteration.
Financial software developers value the .NET ecosystem for the ease of use of technologies effective in the financial sector, such as C# and F#.
Reliable and safe, these languages, along with the ASP.NET framework, have been used for decades by leaders in finance and banking. Flexibility and cross-platform features of .NET enabling swift development are in turn appreciated by aspiring FinTech startups.
Hire on the go
Tailor-made teams
Bulletproof code
Methodology that works
Oathello is an API-based document signing and digital certification solution designed specifically for the financial services market. With an addition of notarisation for KYC and onboarding, companies can use Oathello to automate and digitize virtually all paperwork processes. Full legal compliance and white labelling options make the platform a surefire choice for tech-savvy businesses with an appetite for growth and operational efficiency.
Code & Pepper came on board to build an MVP using the API-first approach.
External platform integrations were a priority, so we paid extra attention to developer experience in terms of adaptability and dependencies management. .NET Core and React were selected as optimal frameworks for web development. An independent mobile interface was designed and implemented with a custom user flow.
See case studies
2
minutes
to sign up
100%
of financial
paperwork covered
24/7
developer
support
See case studyJames Varga CEO and Founder
DirectID (The ID Co.)We value Code & Pepper for their proactive attitude, responsiveness and transparency. It’s a reliable and dependable company that we can recommend for other business entities to cooperate with.
See case studyDuncan Campbell Head of Product
OathelloCode & Pepper provided an impressive level of service outside the original scope of requirements. At no additional charge, they proactively redesigned the product to enhance the final version. They took on the bulk of project management tasks and maintained an open line of dialogue.
See case studyThomas McHugh Founder and Director
FinbourneWe have used a variety of skill sets provided by Code & Pepper, including UX design and development. We have also found using their Scrum process to be very beneficial to measuring the progress of the project. We are happy to recommend Code & Pepper as a partner.
Why Code & Pepper?
FinTech development is hardly a game of chance.
If in doubt: bet on experience, talent and quality.
+19
years
on the market
70+
software
experts
4.6
score
on Clutch
Financial technology thrives best in a robust ecosystem of strategic partners.
Big players are leading the way but there is still room for tech-savvy disruptors. Join the fold!
Give your app a cyber security boost
Get in touch with an experienced Dot NET development company and bulletproof your security policy.
FAQ – Frequently Asked Questions
What .NET development services does Code & Pepper provide?
We provide full-cycle .net software development services: enterprise web applications (ASP.NET Core, Blazor), API and microservices development, Azure cloud solutions, desktop apps (.NET MAUI, WPF), data engineering, ML.NET integration, and legacy .NET Framework modernisation. All delivered with compliance awareness for FCA, PSD2, HIPAA, and DORA requirements.
Is .NET a good choice for FinTech applications?
Yes. .NET is used by major financial institutions including JP Morgan, Goldman Sachs, and Bank of America. Its strong type system (C#), built-in security middleware, native Azure integration, and high throughput make it a natural fit for payment platforms, trading systems, regulatory reporting, and banking applications. ASP.NET Core handles the security and performance demands that financial software requires.
How does .NET compare to Node.js for backend development?
.NET (C#) is statically typed, compiles to native code, and excels at CPU-intensive workloads and enterprise applications. Node.js is dynamically typed, event-driven, and strong for I/O-heavy real-time applications. For FinTech products needing strict type safety, complex business logic, and Azure integration, .NET is often the better choice. For lightweight APIs and real-time features, Node.js can be ideal. We work with both and recommend based on your specific requirements.
Can you modernise our legacy .NET Framework application?
Yes. We migrate .NET Framework 4.x applications to .NET 8, including monolith-to-microservices decomposition, database migration, and CI/CD pipeline setup. We use the strangler fig pattern for incremental migration, so your production system stays live throughout the process.
How quickly can you provide .NET developers?
Through our team augmentation model, we typically have .NET engineers ready to join your team within 2 to 4 weeks. For end-to-end product development, discovery and scoping takes 1 to 2 weeks before sprints begin.
What industries do you serve with .NET development?
Our .net development services focus on regulated industries: FinTech (payments, lending, wealth management, insurance), HealthTech (telemedicine, patient data platforms, clinical tools), and enterprise software for financial services.