Technology and engineering

The engineering principles behind every RAE Horizon product.

Principles, with evidence.

These are the principles we hold ourselves to. Beside each one is the evidence, drawn from how our products are built.

  • Scalable software architecture

    Services are separated by responsibility and backed by managed data stores, so capacity can grow without rewrites.

    Heyra runs on a TypeScript service with PostgreSQL and Redis.

  • Secure application design

    Security is designed in: encryption where it protects people, strict request limits and automated security checks before release.

    Heyra encrypts direct messages end to end, applies rate limits and strict security headers, and runs automated security checks in its release pipeline.

  • API-first integration

    Products that connect to other systems expose clear, documented interfaces first and screens second.

    This is the working method for RAEVOLT.

  • Reliable digital services

    Reliability comes from testing, monitoring and careful handling of failure, not from promises.

    Heyra ships with an automated test suite that must pass before every release.

  • Thoughtful user experience

    People should understand a product in seconds. We design the interface, the wording and the empty and error states together.

    Heyra is built as a native Android app and a web app.

  • Performance optimisation

    Speed is a feature. We keep pages and apps light and avoid loading code people do not need.

    This website is rendered on the server, uses no third-party scripts and no tracking.

  • Maintainable software

    Typed code, tests and clear structure so that products can be changed safely for years.

    Heyra's server is written in TypeScript and its Android app in Kotlin, both with automated checks.

  • Responsible AI development

    AI features must say what they can and cannot do, keep people in control of their data, and never present guesses as facts.

    This is the standard RAE Mind AI is designed to meet.

  • Data protection

    Collect what a product needs and no more, protect it, and let people delete it.

    Heyra offers a public data-deletion route and encrypts direct messages end to end.

  • Interoperability

    Products should work with other systems through open standards and clear integrations rather than closed formats.

    A design goal across the portfolio.