.NET systems designed for long-term operational confidence.
C#, ASP.NET, ASP.NET Core, .NET and WPF engineering for business applications, APIs, integrations and modernisation programmes.
Complexity becomes expensive when ownership is unclear.
Microsoft estates often accumulate tightly coupled modules, fragile deployments and business rules that are difficult to test or change safely.
Hapmexo applies clear boundaries, typed contracts, practical automated testing and deployment discipline to new and existing Microsoft applications.
See our development processWhen this capability is a practical fit.
Organisations that need microsoft & .net capability for an important product, operational workflow or existing application.
Delivery connected to the work your teams need to improve.
Safer feature delivery
Defined during discovery and reviewed against agreed acceptance criteria throughout delivery.
More predictable integrations
Defined during discovery and reviewed against agreed acceptance criteria throughout delivery.
A practical path away from legacy risk
Defined during discovery and reviewed against agreed acceptance criteria throughout delivery.
What this engagement can cover.
Scope is shaped around the real requirement. These capability areas help start a focused conversation.
ASP.NET Core applications
C# domain and service layers
REST API development
WPF application support
ASP.NET modernisation
SQL Server integration
Concrete outputs agreed before delivery.
The exact deliverables depend on scope; these are established in the written recommendation and project plan.
- Agreed scope, priorities and acceptance criteria
- Architecture and implementation decisions
- Working, reviewed software within the agreed scope
- Test, release and technical handover documentation
Good-fit situations.
- Line-of-business applications
- Secure operational APIs
- Desktop-to-web modernisation
- Integration-heavy enterprise systems
Domain contexts.
- Finance and FinTech
- Insurance
- Healthcare
- Logistics
- Public-sector solutions
Verified capabilities selected for the job.
We choose from Hapmexo’s established technology capability based on the existing environment, delivery risk and maintainability.
- C#
- ASP.NET
- ASP.NET Core
- .NET
- WPF
- SQL Server
- REST APIs
- Angular
From uncertainty to supported software.
Discovery
Business goals, users, existing systems, constraints, integrations and material risks.
Scope and planning
Priorities, responsibilities, milestones, dependencies and acceptance criteria.
Design and architecture
User journeys, solution boundaries, data responsibilities and release approach.
Iterative development
Working software delivered in reviewable increments with visible decisions.
Testing and deployment
Proportionate validation, release preparation and production checks.
Handover and support
Documentation, knowledge transfer and agreed post-launch support.
Controls proportionate to business risk.
We make validation, access boundaries, dependency hygiene, testing and production error handling part of delivery—not a final-week checklist.
- Server-side validation and safe data access
- Clear authentication and authorisation boundaries
- Focused automated tests for important behaviour
- Release, error-handling and recovery planning
Before you start.
Do you support existing ASP.NET and WPF applications?
Yes. We can stabilise, maintain and incrementally modernise existing ASP.NET, .NET and WPF applications based on their current risk and business value.
Can .NET services integrate with non-Microsoft platforms?
Yes. Contract-driven REST APIs and integration layers can connect .NET applications with PHP, Node.js, third-party products and other business systems.
Do you recommend a complete rewrite?
Only when evidence supports it. In many cases, staged replacement or targeted refactoring reduces risk and allows the business to continue delivering value.
Bring the constraints. We’ll help shape the path.
Share the business objective, current system, timeline and the decisions you need to make.
Request a consultation