Senior Java ETL Consultant

GFT TECHNOLOGIES SE; Kraków; Hybrid; PLN 172,000 - 220,000; Full time

Benefits offered by this job

Hybrid work model

Competitive salary

Job summary

GFT Poland is seeking a Senior Java ETL Consultant to design, develop, and support enterprise applications across the full software development lifecycle. You will work with business and technical stakeholders to deliver scalable data integration and transformation solutions.

Join our hybrid Kraków office, work with modern tech stack, and contribute to CI/CD, DevOps, and production stability while mentoring engineers.

Qualifications

• 6+ years of software development experience.
• Strong Java, Spring Framework, and REST API and ETL development skills.
• Experience with system integration, data migration and data transformation projects.
• Experience working in Agile and Waterfall environments.
• Knowledge of DevOps practices, CI/CD, and development automation.
• Experience with SQL and NoSQL databases (Oracle, PostgreSQL, MongoDB).
• Experience with Jira, Confluence, Git/GitHub, Jenkins, Ansible, and SonarQube.
• Experience with automated testing frameworks such as JUnit.
• Strong communication, problem-solving, and stakeholder management skills.
• Ability to mentor engineers and drive engineering best practices.
• Openness to work hybrid from our client's office (Kraków) 8 days a month.

Responsibilities

• Design and develop enterprise applications throughout the full software lifecycle.
• Development and maintain ETL solutions for data integration and migration initiatives.
• Translate business requirements into scalable technical solutions.
• Collaborate with developers, testers, architects, analysts, and business stakeholders.
• Support Agile and Waterfall project delivery.
• Improve code quality, performance, resilience, and maintainability.
• Contribute to CI/CD, DevOps, automation, and release processes.
• Support system integrations and migration initiatives.
• Investigate incidents, perform root cause analysis, and implement permanent fixes.
• Conduct code reviews and mentor less experienced engineers.

Skills

Java

Spring Framework

REST API

ETL development

Tools

Jira

Confluence

Git/GitHub

Jenkins

Ansible

SonarQube

JUnit

Kafka

RabbitMQ

Redis

Docker

Oracle

PostgreSQL

MongoDB

Job description

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Date: Sep 7, 2026

Location: Kraków, PL, 30-302

Working place: Hybrid

Working Location:

Type of contract: B2B contract

Salary range: 125 - 160 PLN/H

What will you do?

As a Senior Java ETL Consultant, you will be responsible for designing, developing, and supporting enterprise applications across the full software development lifecycle. You will work with business and technical stakeholders to deliver scalable solutions, improve engineering standards, support digital transformation initiatives, and ensure stable production services.

• Design and develop enterprise applications throughout the full software lifecycle

Development and maintain ETL solutions for data integration and migration initiatives

• Translate business requirements into scalable technical solutions


• Collaborate with developers, testers, architects, analysts, and business stakeholders


• Support Agile and Waterfall project delivery


• Improve code quality, performance, resilience, and maintainability


• Contribute to CI/CD, DevOps, automation, and release processes


• Support system integrations and migration initiatives


• Investigate incidents, perform root cause analysis, and implement permanent fixes


• Conduct code reviews and mentor less experienced engineers

Requirements

• 6+ years of software development experience


• Strong Java, Spring Framework, and REST API and ETL development skills


• Experience with system integration, data migration and data transformation projects


• Experience working in Agile and Waterfall environments


• Knowledge of DevOps practices, CI/CD, and development automation


• Experience with SQL and NoSQL databases (Oracle, PostgreSQL, MongoDB)


• Experience with Jira, Confluence, Git/GitHub, Jenkins, Ansible, and SonarQube


• Experience with automated testing frameworks such as JUnit


• Strong communication, problem-solving, and stakeholder management skills


• Ability to mentor engineers and drive engineering best practices


• Openness to work hybrid from our client's office (Kraków) 8 days a month

Nice to have

• Experience with Spring Cloud, MuleSoft, Seeburger BIS, or EDI solutions


• Experience with Kafka, RabbitMQ, Redis, and Docker


• Experience with production support and service reliability improvements

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