Schjønhaug AS

The technologies we build with

Senior development across mobile, web, backend, and cloud — chosen for what the product needs rather than what is fashionable. These are the technologies we have delivered with in real projects.

Looking for a broader description of what we do? Explore our services

A hand draws a line branching into several digital disciplines

Mobile

iOS development

Native iOS and tvOS apps in Swift and SwiftUI, from new products to the continued development of established apps with millions of users.

Android development

Native Android apps in Kotlin and Jetpack Compose, from new products to the continued development of established apps and multi-brand apps from one codebase.

React and Next.js

Websites and web apps in React and Next.js with TypeScript, from new products to design systems and several brands from one codebase.

TypeScript and Node.js

Backend services, integrations, and internal tools in TypeScript and Node.js, from REST APIs to build and release automation.

.NET and C#

APIs, microservices, and integrations in C# and .NET, from new services to modernising older codebases to .NET 10.

Rust development

Rust backends with Axum and Tokio for long-running, security-sensitive services, with tests, Docker, and packaging for self-hosting.

Go development

APIs, background jobs, and libraries in Go, with a focus on simple operations and predictable performance.

Microsoft Azure

Architecture, infrastructure as code, and operations on Azure, from single services to platforms with many environments.

DevOps and CI/CD

Pipelines, containers, release automation, and monitoring, from a single app to platforms with hundreds of pipelines.

AI agent development

Agents and LLM integrations with the Claude Agent SDK, OpenAI, and Azure AI Foundry, with tools via MCP, evaluation, logging, and human approval.

Bitcoin and Lightning development

Bitcoin and Lightning solutions: trading platforms, wallet monitoring with BDK, BTCPay Server plugins, Stratum V2 mining, and software for self-hosted nodes.

Ways we can work together

The scope adapts to your situation — from focused advice to ownership of a complete delivery.

Complete delivery

From understanding and prioritising the problem to design, development, production, and continuous improvement.

Senior hands-on capacity

Experienced engineering capacity that joins an existing team, takes ownership, and contributes from day one.

Technical advice and direction

Architecture, technology choices, and practical recommendations when you need an experienced perspective before or during an initiative.

Facing a technology decision?

We are happy to help you weigh the options, or to build on the technology you already have.

Get in touch