Senior Database Developer (Oracle / PL/SQL / ETL) (f/m/x)

B2Bnetwork

Polska

Remote

PLN 180,000 - 280,000

Full time

8 days ago

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Benefits offered by this job

Private medical healthcare

Sports activities co-financing

Comprehensive administrative support

Job summary

B2Bnetwork is seeking a Senior Database Developer to work on an energy sector project, focusing on Oracle databases, ETL/ELT, and optimization. You will design and implement PL/SQL, tune SQL, and participate in CI/CD, Git, Flyway/Liquibase, and Airflow-driven workflows.

This is a 12-month remote contract starting December 1, 2026, with private medical care and sport co-financing. Nice-to-have skills include Oracle APEX, Python, Azure DevOps, Hadoop, Spark, HBase, Cassandra, and Java, with energy

Qualifications

Hands-on experience with Oracle databases
Strong programming skills in PL/SQL
Experience designing and implementing ETL/ELT processes
Experience orchestrating workflows using Apache Airflow
Experience with version control using Git
Experience managing database changes using Flyway or Liquibase
Ability to optimize and debug complex SQL queries and PL/SQL procedures
Experience in code reviews, refactoring, and database performance optimization
Practical experience using AI-powered development tools
Professional experience in the energy sector

Responsibilities

Maintaining and developing Oracle databases and ETL/ELT processes
Developing applications using Oracle APEX
Optimizing databases, SQL queries, and PL/SQL code
Diagnosing and resolving database incidents
Managing source code and database changes using Git and Flyway
Participating in CI/CD processes, code reviews, integration testing, and UAT
Creating and maintaining documentation of database structures and processes

Skills

PL/SQL

Oracle DB

SQL optimization

ETL/ELT

Airflow

Git

CI/CD

UAT

Documentation

AI tools

Energy sector

Tools

Git

Flyway/Liquibase

Airflow

Azure DevOps

Hadoop

Spark

HBase

Cassandra

Python

Oracle APEX

Job description

We are looking for a Senior Database Developer to join a project in the energy sector, focusing on the development, optimization, and maintenance of Oracle databases and ETL/ELT processes.

About the Project

The project involves developing new business initiatives and maintaining Oracle databases in accordance with SLA requirements. The scope includes ETL/ELT processes within Oracle and Big Data environments, as well as code optimization, refactoring, and performance improvements.

Cooperation Details