Senior Data Engineer (Oracle)

Contract of employment

Salary range: 14600 – 22300 PLN gross

We are looking for a Senior Oracle Engineer with around 6 years of experience and strong expertise in advanced Oracle PL/SQL development, database performance tuning, and optimization .

You will join a team responsible for onboarding and integrating new data feeds from upstream systems into the internal source database. The role combines hands-on development with end-to-end feature ownership, testing, performance optimization, and close collaboration with other technical teams.

Your duties:

- Design, develop, and maintain advanced Oracle PL/SQL solutions .

- Create and enhance complex packages, procedures, functions, and triggers .

- Diagnose and resolve complex database performance issues .

- Analyze and optimize slow-running SQL queries and PL/SQL code.

- Perform database performance tuning and optimization in high-volume data environments.

- Take full end-to-end ownership of assigned features, from technical analysis and development through testing and delivery.

- Plan and execute comprehensive E2E testing to ensure the quality and reliability of delivered solutions.

- Proactively collaborate with relevant stakeholders and technical teams to identify dependencies, gather required data, and resolve integration issues.

- Support the onboarding and integration of new data feeds from upstream systems into internal databases.

- Work across the end-to-end data ingestion process , including data filtering, parsing, validation, transformation, and rejection handling.

- Ensure incoming data meets required quality, consistency, and structural standards before it is made available for further processing.

Requirements:

- Min. 6 years of professional experience working with Oracle databases.

- Strong expertise in advanced PL/SQL development .

- Hands-on experience developing complex packages, procedures, functions, and triggers .

- Proven experience in database performance tuning and optimization .

- Strong ability to diagnose performance bottlenecks and optimize SQL queries and PL/SQL code.

- Experience working with high-volume databases and large datasets .

- Experience taking ownership of features throughout the entire development lifecycle.

- Willingness and ability to independently plan and execute E2E testing .

- Strong problem-solving and analytical skills.

- A proactive approach to cross-team collaboration .

- Ability to independently identify technical dependencies, gather relevant information, and resolve integration-related issues.

- Good communication skills and the ability to work effectively with multiple stakeholders.

##

You will join one of the teams responsible for onboarding and integrating new data feeds from upstream systems into the internal source database .

The project covers the complete data ingestion lifecycle , including:

- Data filtering

- Data parsing

- Data validation

- Data transformation

- Rejection and exception handling

The team ensures that incoming data meets the required quality and structural standards before it is made available for further processing.

The resulting data serves as a foundational source for multiple applications and systems , making this project an important component of the organization's overall data infrastructure.

We offer:

- Contact of employment

- Hybrid work from one of our offices (Warsaw, Poznań, Łodź, Kraków, Wrocław) but we are also open for candidates from other locations who prefer working remotely.

- Working in a highly experienced and dedicated team

- Benefit package tailored to your needs (medical, sport, lunch subsidy, life insurance, etc.)

- Online training and certifications

- Access to e-learning platform

- Social events