Senior Software Engineer (Integrations) @ CO3 sp. z o.o.
CO3 sp. z o.o.
Apply at CO3 sp. z o.o.Opens the employer's own posting.
- Where
- Polska
- Level
- Senior
- Salary
- PLN 240k–300k
- Technologies
- JavaTypeScriptC#SpringREST
- First sniffed
- 05 Sept 2026 14:04 · open 8h
- Last verified
- 05 Sept 2026 14:04 · still on the employer's site
- Source
- Company careers page via adzuna
We're looking for you if: Master of various integration styles: from REST/Webhooks and custom APIs to ETL pipelines, batch processing, raw file exchanges, and handling massive data volumes. Languages are tools to you: Strong in Java (Spring), comfortable finding your feet in TypeScript/Node and C# (for existing/legacy modules of the platform stack). You think in frameworks: You naturally spot repeatable integration patterns and build abstractions, or internal developer tools instead of copy-pas…