https://omrr.no/tags/kotlin/Recent content in Kotlin on Ole M.R. RabanalHugoen-USFri, 01 Aug 2025 00:00:00 +0000https://omrr.no/projects/telecom-data-platform/Fri, 01 Aug 2025 00:00:00 +0000https://omrr.no/projects/telecom-data-platform/<p>A legacy platform had grown across thirteen repositories, roughly sixty endpoints and around two hundred stored procedures. Nobody held the whole picture. The work was to recover the business logic buried in it, and to replace it with something that produced the same outcomes from far fewer moving parts.</p> <h2 id="context">Context</h2> <p>A leading telecom provider, from August 2025, as architect through Sonat AS.</p> <p>It is a classic pattern: an old system is given more and more responsibility over time, and grows to meet it. Business rules ended up mostly in the database, as stored procedures with no version history, no tests, and no boundary between one domain and the next. The behaviour was real and the business depended on it, but it was not written down anywhere except in the implementation.</p>