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Eterna

Services

Custom software development, from first scope to long-term support.

Seven services, three engagement models, one founder-led team. If your project does not fit any of them, tell us anyway. We will say so quickly and point you somewhere useful.

  • The internal tools, platforms and back-office systems your business runs on, built from scratch or on top of what you already have.

    • Requirements workshops and technical scoping
    • Architecture, data modelling and API design
    • Backend and frontend implementation
    • Integrations with CRM, ERP, payments and identity providers
    • Automated tests and a documented handover
    More about custom software development

Engagement models

Three ways to work together.

  • 01

    Fixed-scope project

    Best for Well-defined builds and MVPs

    A written scope, a fixed price and a delivery date. Changes are priced separately, so there are no surprises on the invoice.

  • 02

    Monthly retainer

    Best for Products that keep evolving

    A set number of engineering days per month, planned together every two weeks. Cancel with 30 days notice.

  • 03

    Embedded team

    Best for Companies with in-house engineering

    One to three of our engineers join your team, your tools and your rituals. You manage priorities; we bring the experience.

Tools we reach for

We choose boring, well-supported technology by default and only deviate when the problem demands it. This is what most of our projects are built with.

  • TypeScript
  • React
  • Next.js
  • Node.js
  • Python
  • .NET
  • PostgreSQL
  • Redis
  • React Native
  • Flutter
  • AWS
  • Azure
  • Docker
  • Terraform
  • GitHub Actions
  • OpenAI & Anthropic APIs

Next step

Have a project in mind?

Tell us what you are trying to build. We reply within one business day, usually with a few questions and a rough sense of scope.