Remote Senior Oracle DB & ETL Developer

B2Bnetwork; Polska; Remote; PLN 180,000 - 280,000; Full time

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

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