Async

Async is an independent software engineering company based in Ružomberok, Slovakia. It builds native macOS, iOS and visionOS software in Swift and modern C++, real-time 3D graphics on Metal, system and security components, backend services, and applied AI features.

Its customers are product teams that need senior engineers for work delivered under contract. Engagements include embedded contract engineering, fixed-scope project delivery, and short architecture or security reviews. Client work is confidential, and the company publishes only anonymised examples.

The company was founded in 2021 and is registered as a Slovak s.r.o. It describes itself as based in the European Union and working with teams across Europe and remotely, and it works under EU contract and data-protection law.

Product: Senior contract software engineering on Apple platforms, 3D graphics, C++ systems and security components, backend services and applied AI.