Complex systems at startup speed.
Phainon is a software engineering company from Kyiv, Ukraine. We design, build and run platforms and AI-powered systems, the parts of a product that have to be right from day one. We work with the discipline of a large engineering organisation and the pace of a small team.
Φαίνων, “the shining one” — the ancient Greek name for Saturn.
What we do
We take on systems where the architecture decides the outcome, and we stay with them after launch. Everything we build, we also run.
- Platforms
- Cloud-native backends and platform-as-a-service on Kubernetes: services, event streams, identity, delivery and observability, shaped so that a small team can run what usually takes a department.
- AI-powered systems
- Products and internal tools built around language models. Agents read, decide and act inside explicit permissions, and every action they take is logged and open to review.
- Custom engineering
- Architecture and development for products on our stack or beside it: domain-driven design, event-sourced services and the integrations between them, delivered with the tooling we use ourselves.
Tequila Platform
Our product. A Kubernetes-native backend platform for building B2B, B2C and IoT products, with the architecture, operations and AI tooling of a large engineering organisation already in place.
- An identity provider in every environment
- Event-sourced services with a verifiable history
- Releases arrive as reviewed pull requests
- Runs in infrastructure the customer controls
Company
- Legal name
- Phainon LLC (ТОВ «ФАЙНОН»), a limited liability company under the laws of Ukraine
- Company code
- 46615574 in the Unified State Register of Ukraine
- Registered
- 5 October 2026, Kyiv
- Activity
- Computer programming (NACE 62.01)
- contact@phainon.llc
- Product
- Tequila Platform, tequila.dev
Contact us
Partnerships, access to Tequila Platform, or a system you want built. Write to contact@phainon.llc or use the form; we read every message and reply within two business days.