Services

At Caelestis we focus on building clear, effective software solutions that combine technical rigor with a pragmatic approach. Our work is centered on Go and and the BEAM (Elixir and Gleam), covering cloud-native backends, web applications, and real-time systems.

Cloud Native Development

We build robust, scalable applications in Go with modern cloud-native practices:

Microservices architecture design and implementation
High-performance API development
Distributed systems and event-driven architectures
Cloud infrastructure on AWS and HashiCorp tools

Web Applications

We design dynamic web applications without unnecessary complexity, guided by hypermedia-driven principles:

Single Page Applications (SPAs) and Progressive Web Applications (PWAs)
Hypermedia-driven interfaces inspired by HATEOAS and the htmx manifesto (for Go backends)
LiveView for real-time, interactive applications on the BEAM
Lustre for Gleam-based projects, with ongoing internal developments.

Backend & Real-time Applications

We design scalable services using the AWS stack and the strengths of the BEAM:

Scalable backend services on AWS
Real-time applications with Phoenix LiveView
WebSocket-based communication systems
Event-driven and high-availability architectures

Custom Solutions

Beyond typical backends and web apps, we also create tools tailored to specific needs:

Command-line interfaces (CLIs) and developer tooling in Go
Desktop applications with Fyne
System integration and modernization
Performance optimization
Technical consulting and architecture design