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Company data platform syncing national registries with embeddable filters

A platform that aggregates Finnish company data from official registries, lets users enrich the gaps, and serves it back through customisable filters embeddable on any website.

Client — a Finnish business data provider My role — Backend & API developer Team — 3 people
01 — Challenge

Official registry data is authoritative but incomplete — it will not tell you a company's opening hours, services, staff size or a working phone number. Continuous sync also has to enrich without overwriting what users have added by hand.

02 — Approach

Built continuous synchronisation from the PRH and YTJ registries, layered with user-supplied enrichment for the fields the registries do not carry. Designed the merge so registry updates never clobber manual additions, and exposed the result through embeddable, customisable filter widgets.

03 — Impact

Businesses display accurate, enriched Finnish company profiles on their own sites, combining official registry data with details the registries never held.

Stack
Laravel React MySQL Laravel 9 React MySQL PRH / YTJ registry APIs
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