IT Systems Integration, Legacy Modernisation & Security Audit

Engineering

Connecting systems that were never designed to speak to each other, and moving load off software that has outlived its runtime — in steps, with the business still running.

What this actually means

A rewrite that stops the business is not modernisation, it is an outage with a project plan. We work by strangling the old system: an integration boundary first, then functionality moved across one bounded piece at a time, each step reversible and each step delivering something. Security review is part of the same work rather than a separate report — authentication, authorisation, secret handling, dependency and data exposure examined against the system as it actually runs.

What you get

  • Integration map: every interface, its owner, its data, its failure mode
  • Anti-corruption layer or API gateway isolating the legacy system
  • Incremental migration plan with a reversible step boundary
  • Application security review with findings ranked by exploitability, not by scanner severity
  • Data migration with reconciliation you can audit afterwards

What this does not cover

  • Our security review is an engineering assessment of systems we are contracted to examine. It is not a certification, and it does not make anyone compliant with a standard by itself.
  • We do not test systems we have no written authorisation to test.

We publish exclusions beside every service on purpose. A supplier who describes only what they do leaves you to discover the boundary during the engagement, which is the expensive time to find it.

Typical technology

  • REST
  • GraphQL
  • OpenAPI
  • Kafka
  • RabbitMQ
  • SFTP/EDI
  • SAML
  • OAuth 2.1
  • OIDC
  • PostgreSQL
  • SQL Server

Indicative, not prescriptive. The right stack follows the constraints; a list like this one is a starting point for a conversation, not a commitment either side has made.

How it is engaged

Assessment first, then a modernisation programme staged around your release calendar.

No price appears here or anywhere else on this site. Cost follows scope, and scope follows the reading we do at the start.

Start with a project audit

Register status, as published by the register

Status
Entered into the register
Register
Estonian Business Register (e-Äriregister), maintained by Centre of Registers and Information Systems (Registrite ja Infosüsteemide Keskus, RIK)
Read on
2026-08-26
Annual reports
Filed for financial years 2015 to 2025; every filing carries the status “Valid”. Most recent submitted 28.06.2026.
Principal activity
EMTAK 62201Computer consultancy activities (NACE 62.20). Source: Annual report filed 28.06.2026.

This block reports what the register says and nothing more. It is generated from a single data file that is checked against the register capture at build time, so it cannot disagree with the footer, the legal identity page or the API. Open the register record