Senior Oracle Engineer: PL/SQL & Data Ingestion

GFT Technologies SE; Polska; Hybrid; PLN 163,000 - 249,000; Full time

Benefits offered by this job

Medical coverage

Sport benefits

Lunch subsidy

Life insurance

Online training and certifications

E-learning platform access

Social events

Job summary

GFT Technologies SE is seeking a Senior Oracle Engineer in Poland with around 6 years of experience and strong Oracle PL/SQL expertise. The role focuses on onboarding data feeds and end-to-end feature ownership, including development, testing, and performance optimization.

You will design and maintain advanced Oracle PL/SQL solutions, optimize complex queries, and work within a hybrid model across multiple teams to deliver high-volume data workflows.

Qualifications

• Min. 6 years of professional experience 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.
• Experience with high-volume databases and large datasets.
• Ownership of features throughout the development lifecycle.
• Ability to independently plan and execute E2E testing.
• Strong problem-solving and analytical skills.
• Proactive cross-team collaboration.
• Ability to identify dependencies and resolve integration issues.
• Good communication with multiple stakeholders.

Responsibilities

• 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.

Skills

Oracle database expertise

Advanced PL/SQL development

SQL performance tuning

End-to-end feature ownership

Cross-team collaboration

Tools

Oracle PL/SQL packages

Data ingestion tooling

Job description

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Date: Sep 30, 2026

Location:

Warszawa, PL, 00-839 Kraków, PL, 30-302 Łódź, PL, 90-118 Poznań, WP, PL, 61-569

Working place: Hybrid

Working Location:

Contract of employment

Salary range: 14600 – 22300 PLN gross

We are looking for a Senior Oracle Engineer with around 6years 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.

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 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

We are GFT Poland. WE KNOW how to tackle complex issues with innovative approach to deliver the highest value. Our reputation has been built around one simple rule: we do not overpromise, WE DELIVER. We deliver to our employees, clients and partners. WE GROW as you grow, so investing in you is our business strategy. Caring for each other is our priority. WE CARE who you are, what you need, how you feel. WE CARE to smile, have fun and develop as human beings.

Why Choose GFT?

• A culture of top performance
• Deep tech IT engineering & consulting
• 1200 skilled & top-class experts
• 77% of the team are regular/senior
• Products that contribute to a sustainable world
• Competitive salary and benefits
• Ambitious projects, trainings and tools you need to flourish
• Google Cloud Partner of the Year - for going above and beyond for customers

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