Senior Oracle DB Developer

As a Senior Oracle DB Developer, you will work on challenging projects critical to the continuity and performance of a leading railway infrastructure operator. These projects involve consolidating and distributing information related to railway traffic management-covering pre-processing, real-time, post-processing, and back-office operations-to both external (railway companies, foreign infrastructure managers, European platforms) and internal stakeholders (real-time schedule visualization, billing, energy consumption calculation, Big Data systems).

You will contribute to both new developments and maintenance (corrective and evolutionary) of existing applications. Agile software development, source control, continuous integration, and modern development hardware are central to the work environment.

Scope of Work Design and validate 3NF data models based on functional analysis. Design and validate data models using Data Vault, Star Schema, or other modeling approaches. Implement data models and business logic using SQL and PL/SQL. Ensure code quality and manage promotion across environments (dev, test, acc, prod). Analyze and optimize application and database performance. Lead a small team: delegate tasks, discuss approaches, and report progress to technical teams, project leader, and team leader.

Oracle DB Development: 10+ years Oracle 19C Development: 2+ years Relational Modeling (ERD, 3NF): 10+ years Database Architecture (Data Vault, Star Schema): 10+ years SQL & PL/SQL Development: 10+ years GIT (Source Code Management): 5+ years Scrum/Agile Methodology: 5+ years SQL & PL/SQL Query Optimization: 5+ years Jira Usage: 5+ years Peer Reviewing: 5+ years Solution Documentation: 5+ years Team Management (minimum 3 people): 5+ years Script Management across environments (dev, test, acc, prod): 5+ years Database Administration (security, tablespace, schema): 2+ years Languages: Dutch or French C2, second national language A2, English B2

Soft Skills Knowledge of railway operations and IT domain; understanding of role challenges. Ability to integrate into teams while demonstrating values: kindness, courage, positivity, reliability. Professional attitude and respect for management. Clear and effective communication skills. Presentation skills. Responsible engagement and commitment for the duration of the contract.