- Na dálku
- Hybridní
- Na místě
- Smlouva
- Backend
20.000 - 28.650 PLN
... Analyze legacy Java/Spring code and Oracle PL/SQL, and re-implement business logic in the new services, with tests that prove behavioural parity. - Build the PostgreSQL data layer: schema design, JPA/Hibernate mappings, versioned migrations (Flyway / Liquibase), and query performance tuning. - Implement Oracle → PostgreSQL data ...
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