GraphQL APIs on .NET
HotChocolate schemas over Entity Framework and SQL Server, so front ends ask for exactly the data a screen needs.
GraphQL development
GraphQL APIs on .NET, and GraphQL data in your CMS.
We have worked with GraphQL from both sides: building a HotChocolate GraphQL API for a large .NET business portal, and consuming a GraphQL API to keep property listings in sync across several Umbraco websites.
GraphQL at OSKIFrom case studies
Client projectsPublished case studies that used GraphQL
2projects
Where in the stackIntegrations, Backend
2layers
IndustriesReal estate, Software development
2industries
Most recent projectReusable GraphQL-to-Umbraco importer that keeps property listings in sync
2024year
What we build with GraphQL
Where GraphQL earns its place.
The kinds of work we use GraphQL for, based on the projects below rather than a list of everything the technology can do.
GraphQL imports into a CMS
Configurable mapping from GraphQL fields to CMS properties, with parallel imports, media handling and history of every run.
Gateways over existing systems
A single typed API in front of several services, so mobile and web clients do not need to know where data lives.
2 client projects
How GraphQL fit into each project.
Which part of the system it ran, and what it worked with. Every row links to the full case study.
Reusable GraphQL-to-Umbraco importer that keeps property listings in sync
IntegrationsGraphQL
Together withUmbraco CMS, .NET, SQLite, JSONPath
A .NET business portal for a German division, its dealers and staff
BackendHotChocolate (GraphQL)
Together with.NET Framework 4.8, ASP.NET Core 3.1, .NET 5.0, Entity Framework, Hangfire, Umbraco CMS
GraphQL case studies
Results from these projects.
Each one with the client’s problem, our approach and what changed.
Integrations2024
Real estate
Reusable GraphQL-to-Umbraco importer that keeps property listings in sync
A service and DLL pair that pulls property data from a GraphQL API into any Umbraco site, maps it by configuration and imports it in parallel.
GraphQLdata source
Umbracotarget CMS
HS High Stake GmbH
Web platformsSince 2021
HS High Stake GmbH · Germany
A .NET business portal for a German division, its dealers and staff
OSKI developers joined HS High Stake to build modules for a large business portal that links a German division, its dealers and its employees.
7developers over the project
18+ monthsof continuous work at review time
Related services
GraphQL is a tool. These are the jobs it does.
We do not sell hours of a technology. We take on a result, and choose the stack with you. These are the services where GraphQL usually comes in.
.NET development & modernizationNew .NET applications and migrations from .NET Framework to .NET 8–10, without stopping the business.Integrations & automationMarketplaces, accounting, CRM and identity systems connected and automated.Umbraco developmentNew Umbraco sites, upgrades from 7 and 8, multi-site, headless and back-office extensions.
Technologies
Other technologies we have shipped with.
Each one backed by at least one published client project.
GraphQL FAQ
GraphQL questions we hear.
Anything missing? Send us your question and an engineer will answer, usually within one business day.
Contact usShould we use GraphQL or REST?+
GraphQL pays off when many different screens or clients need different shapes of the same data. For simple integrations and webhooks REST is easier to run. We often use both in one system.
Which GraphQL server do you use on .NET?+
HotChocolate. We used it on the HS High Stake business portal alongside Entity Framework, SQL Server and Elasticsearch.
Can you import data from a GraphQL API into Umbraco?+
Yes. Our importer pulls property data from a GraphQL API into any Umbraco site, maps it by configuration and runs in parallel. It is reused across sites by adding one DLL reference.
Start a project
Tell us what you are building with GraphQL. We come back with a plan and a price.
A spec, a Figma file or three paragraphs is enough to start.
- First reply · from an engineer, not a sales rep
- 30-min call · with Roman, our CTO, to clarify scope
- After the call · a written proposal with plan, team and price
Roman Oleksuk, CTOPrefer to talk? Pick a slot in Roman's calendar