Kotlin Multiplatform
Shared commonMain fan-out · expect/actual seams · coroutines & Flow · KSP code generation
KOTLIN MULTIPLATFORM · COMPOSE MULTIPLATFORM
One codebase.
Every platform. Shipped.
Sautner Studio designs, builds, and releases full-stack software from a single shared Kotlin codebase — native on Android, iOS, desktop, web, and server. No duplicate teams. No drift between platforms.
- Android
- iOS
- Desktop
- Web · Wasm
- Server
HOW IT WORKS
From first call to production release.
Consultation
A working session to map your product, platforms, and constraints. You leave with a concrete plan — architecture, milestones, and a fixed scope you can hold us to.
YOU GET
- Architecture proposal
- Milestone plan
- Fixed-scope quote
Front-end design
High-fidelity, interactive screens designed in the same Material 3 language they will ship in. Reviewed and revised with you before a line of production code is written.
YOU GET
- Hi-fi mockups
- Clickable prototype
- Material 3 theme & design tokens
Implementation
Shared business logic in Kotlin, native experience on every platform. Test-driven, CI on every commit, and a working build in your hands every week.
YOU GET
- Shared KMP codebase
- Android · iOS · desktop · web apps
- Automated tests + CI pipelines
Production release
Signed, notarized, and published everywhere your users are — App Store, Google Play, installers, and web. Release automation included, so v1.1 ships as easily as v1.0.
YOU GET
- Store & web releases
- Signed installers (.dmg / .msi / .deb)
- Release automation & support
EXPERTISE
Deep in the stack, end to end.
Compose Multiplatform
Material 3 token theming · desktop, web, iOS, Android · screenshot regression testing
Backend & Distributed
Ktor · SSE real-time streaming · gRPC · P2P mesh discovery · MQTT & webhooks
AI & LLM Engineering
MCP servers · multi-agent CI fleets · RAG pipelines · local model serving & fine-tuning
Build & Release
Gradle engineering · store + installer packaging · Maven Central · signing & notarization
Cloud & DevOps
GitHub Actions at scale · AWS S3, CloudFront, Lambda · self-hosted runner fleets
ABOUT
Small on purpose.
Sautner Studio is led by Ben Sautner, a full-stack engineer who owns the entire delivery pipeline — from shared Kotlin business logic to signed installers on every store. The person who scopes your project is the person who builds it.
ben@sautner.studio