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System Intervia

What we do

Services

Six services covering the full life of a system — from working out what to build, through building it, to keeping it running afterwards. Most projects use two or three, and we will tell you which ones you do not need.

What we do

6 disciplines

Custom Software Development

Line-of-business systems, internal tools and operational software built around how your team really works. We design the busiest screen first — the full queue, the exception, the three-thousand-row table — because that is where the software lives once it ships.

  • Discovery and technical scoping
  • Architecture and data modelling
  • Full-stack development
  • Automated test coverage

Web & Mobile Applications

Web platforms, portals and mobile apps, from design system to app store. Accessibility and performance are part of the build rather than a later audit, because retrofitting either one costs more than doing it properly the first time.

  • UX and interface design
  • React, Next.js and React Native builds
  • Design systems and component libraries
  • WCAG 2.2 AA accessibility

Cloud & DevOps

Infrastructure as code, deployment pipelines and the monitoring that answers questions at three in the morning. We aim for releases that are boring: frequent, reversible, and runnable by anyone on the team.

  • AWS and Google Cloud architecture
  • Terraform and Kubernetes
  • CI/CD pipelines
  • Observability, alerting and on-call runbooks

Data Engineering & Integration

Pipelines, warehouses and the integration work that makes separate systems behave like one. Most reporting problems turn out to be data-modelling problems, so we start with the model rather than the dashboard.

  • ETL and streaming pipelines
  • Data warehouse design
  • API design and third-party integration
  • Reporting and analytics surfaces

Legacy Modernisation

Incremental migrations for software that has to keep trading while it changes. Service by service, behind feature flags, with every step reversible — a migration you cannot roll back is not a plan.

  • Codebase and architecture audit
  • Incremental migration roadmap
  • Service extraction and rewrites
  • Zero-downtime cutover

Support & Maintenance

Ongoing development, security patching and a response time you can put in front of your board. We would rather keep improving something we understand than hand over a codebase and disappear.

  • SLA-backed support
  • Security and dependency updates
  • Performance monitoring
  • Ongoing feature development

How we engage

INDICATIVE PRICING

Discovery

1–2 weeks

A fixed-scope assessment of where you are and what the work really involves. Ends in a findings report and a scope we both believe. Often enough on its own to unblock a stalled project.

From €12,000

Project

8–16 weeks typical

The usual shape. Fixed scope, two-week sprints, working software at the end of each one, with handover built into the final sprint rather than bolted on afterwards.

From €75,000

Retainer

Rolling, 3-month minimum

For long modernisation programmes and ongoing product work where the destination moves. Same team every month, predictable cost, one month's notice to stop.

From €22,000 / month

Indicative, not a price list. Every figure moves once we know what the work actually involves, which is what Discovery is for. We quote fixed price where the scope allows it and time-and-materials where it honestly does not.

How we work

FIVE STAGES
  1. 1–2 weeks

    Discovery

    We work out where you actually are, which is rarely where the brief says. Stakeholder interviews, a read through the existing codebase, and an honest look at the analytics and the incident history.

    You receive

    Findings report and a scope we both believe

  2. 2–3 weeks

    Design & Architecture

    The whole system on one page before any of it gets built: user flows, the states that matter, service boundaries, and the risks we can name up front. This is the cheapest point to change your mind.

    You receive

    Designs, technical architecture and a risk register

  3. 8–16 weeks typical

    Build

    Two-week sprints, each ending in something you can click on a staging environment. No status decks — you see the real thing running against real data, or the sprint did not finish.

    You receive

    Working software every two weeks

  4. 1–2 weeks

    Launch

    Staged rollout behind feature flags, load testing before you need it, and monitoring configured before go-live rather than after the first incident.

    You receive

    Production launch, dashboards and alerting

  5. Ongoing

    Support & Handover

    Documentation written for the engineer who inherits this, training sessions with your team, and an SLA if you want one. If your team cannot maintain it after we leave, we did not finish the job.

    You receive

    Documentation, training and optional SLA

Technologies

WHAT WE BUILD WITH
Frontend
  • TypeScript
  • React
  • Next.js
  • Tailwind CSS
  • Vue
Backend
  • Node.js
  • Go
  • Python
  • Ruby on Rails
  • PHP
Mobile
  • React Native
  • Swift
  • Kotlin
  • Flutter
Data
  • PostgreSQL
  • Redis
  • Kafka
  • BigQuery
  • dbt
Cloud & DevOps
  • AWS
  • Google Cloud
  • Kubernetes
  • Terraform
  • GitHub Actions
Quality
  • Playwright
  • Vitest
  • OpenTelemetry
  • Sentry

We pick what your team can maintain after we hand over, which sometimes means the boring option rather than the interesting one.

Start a project

Not sure which of these you need?

That is the normal starting position, and it is what Discovery exists to answer. Tell us where you are and we will say which of these is worth paying for.