Senior Java Backend Engineer – Data Integration and ETL
Offer summary

(Summary generated by AI based on the full job description)

The project involves developing scalable backend solutions for the financial industry focused on data integration and replication. It uses Java (Spring Framework), API development, PostgreSQL, ETL workflows. Responsibilities include building and maintaining backend services, database management, operational support, agile collaboration, and continuous integration and system development.

you can start ASAP

Senior Java Backend Engineer – Data Integration and ETL

Company: ITDS Polska Sp. z o.o.

from: 22 May 2026
to: 21 June 2026
25 200 - 29 400net (+ VAT)/ mth.B2B contract (full-time)
salary not specifiedcontract of employment
Salary details
basic salary
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland

Requirements

Expected technologies

Java
AWS
Azure DevOps
Jenkins
Linux
PostgreSQL
Spring Framework
SQL

Operating system

Linux

Our requirements

  • At least 5 years of experience in Java (Spring Framework).
  • Proficiency in at least two or three of the following: API development, SQL/PostgreSQL database management, ETL workflows, React.
  • Strong technical and analytical troubleshooting skills.
  • Experience working in Agile environments, including the use of Jira and Confluence.
  • Understanding of microservices architecture and RESTful service design.
  • Good interpersonal and communication skills.
  • English proficiency (B2+).
  • Good command of English.

Optional

  • Good working knowledge of cloud technologies like AWS, Azure, and GCP.
  • Experience building out CI toolchains using Jenkins CI/CD.
  • A background in Systems Administration across Linux/AIX/WAS platforms.

Your responsibilities

  • Collaborate with engineers, architects, and stakeholders to design, build, and operate backend services for data integration and replication.
  • Develop, implement, and maintain robust ETL workflows and APIs to synchronize data between Atlassian platforms and systems.
  • Work closely with the engineering team to design and deliver new features, ensuring scalability and reliability.
  • Proactively engage with internal customers to troubleshoot issues, address feature requests, and provide operational support.
  • Manage and optimize PostgreSQL databases, ensuring data integrity and performance.
  • Contribute to an agile, CI/CD-driven environment, delivering frequent, high-quality releases.
  • Participate in code reviews, automated testing, and knowledge sharing within the team.
  • Demonstrate a commitment to continuous learning and professional growth.

About the project

As a Senior Java Backend Engineer, you will be working for our client, a leading player in the finance/technologies industry, dedicated to transforming data workflows and ensuring seamless system integration. Join a team committed to building resilient, scalable solutions that impact global data landscapes.
Unleash innovation in data integration — drive scalable solutions with cutting-edge backend technology!
Krakow-based opportunity with hybrid work model (up to 3 remote days per week).

This is how we organize our work

This is how we work

at the client's siteagilescrum

This is how we work on a project

  • DevOps

#GETREADY to meet with us!

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people.
We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data.

ITDS’s Whistleblower Procedure

📌 You can report violations in accordance with ITDS’s Whistleblower Procedure available here: https://itds.pl/wp-content/uploads/2025/03/INFORMATION-ON-PROCEDURE-FOR-REPORTING-BREACHES-AND-PROTECTION-OF-WHISTLEBLOWERS-AT-ITDS-POLSKA.pdf
Company

What we offer

  • Stable and long-term cooperation with very good conditions
  • Enhance your skills and develop your expertise in the financial industry
  • Work on the most strategic projects available in the market
  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
  • Participate in Social Events, training, and work in an international environment
  • Access to attractive Medical Package
  • Access to Multisport Program
  • Access to Pluralsight
  • Flexible hours

Benefits

  • sharing the costs of sports activities
  • private medical care
  • flexible working time
  • fruits
  • integration events
  • corporate gym
  • saving & investment scheme
  • no dress code
  • coffee / tea
  • drinks
  • christmas gifts
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • access to +100 projects
  • access to Pluralsight

Recruitment stages

  • 1.
    online interview
  • 2.
    online interview

ITDS Polska Sp. z o.o.

ITDS supports financial service providers to take the next steps.
We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization.
We see where banks, insurers, payment companies, or fintech can go and how they can get there.
That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality.
ITDS in Poland - Pure player in new Technologies & Financial Industry
+300 IT implementation professionals
+20 clients in the Banking, Insurance, Payment & Fintech Industry
ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities.

This is how we work

Senior Java Backend Engineer – Data Integration and ETL
25.2k–29.4k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Kraków, Lesser Poland
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