Junior Full Stack Developer

Location: Warsaw, Poland

Employment Type: Regular

Junior Full Stack Developer – Core Banking Reporting, Integration & AI Engineering

Role Overview

The Junior Full Stack Developer supports core banking reporting, application development, platform integration, AI enablement and production support activities across the reporting technology estate.

The role provides hands-on development experience across Python, Java, SAP BusinessObjects and AI technologies, contributing to the delivery of reporting solutions, intelligent automation, system integrations and enterprise applications within a complex financial services environment.

Role Summary

A full-stack developer with hands-on experience in Python, Java and SAP BusinessObjects, capable of delivering reporting solutions, application development, AI-enabled automation, system integrations and production support across the platform.

The role combines BusinessObjects reporting, reporting modernisation, Java integration development, Python engineering, AI solution development and operational support activities.

 

Responsibilities:

• Application & Service Development: Design, build, and maintain full-stack application components, services, and RESTful APIs using Python and Java.
• Core Banking Reporting Solutions: Develop, enhance, and schedule complex financial and operational reports utilizing SAP BusinessObjects and relational databases.
• AI & Intelligent Automation: Assist in building and integrating AI-enabled tools, machine learning pipelines, and automated processing workflows to optimize reporting processes.
• System Integration: Implement robust data exchange and system integration pipelines connecting core banking platforms, data warehouses, and reporting tools.
• Production Support & Troubleshooting: Participate in level-2/level-3 production support activities, analyzing incidents, identifying root causes, and implementing bug fixes.
• Code Quality & Testing: Write clean, modular, and maintainable code adhering to standard software engineering best practices, including unit and integration testing.
• Database Management & Query Optimization: Write and optimize SQL queries, stored procedures, and data models to ensure high-performance reporting and data retrieval.
• Collaboration & Agile Delivery: Work closely with cross-functional teams, business analysts, and senior engineers in an Agile/Scrum environment to deliver sprint objectives.
• Technical Documentation: Maintain comprehensive documentation for system architectures, data flows, codebase changes, and operational runbooks.

Qualifications:

• Education: Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or a related quantitative field (or equivalent practical experience).
• Programming Proficiency: Hands-on foundational programming experience with Python and Java.
• Reporting & BI Tools: Practical exposure to or working knowledge of SAP BusinessObjects (Web Intelligence, Universe Design) or equivalent enterprise BI tools.
• Database & SQL Skills: Solid understanding of relational database management systems (RDBMS) like Oracle, PostgreSQL, or SQL Server, with strong SQL querying skills.
• AI & Automation Familiarity: Foundational knowledge or strong interest in AI/ML concepts, LLM integration, or workflow automation tooling.
• API & Web Technologies: Basic understanding of web technologies (HTML, CSS, JavaScript) and building or consuming RESTful APIs/web services.
• Version Control & CI/CD: Familiarity with Git version control and standard CI/CD deployment pipelines (e.g., Jenkins, GitLab CI).
• Analytical & Problem-Solving Skills: Strong analytical mindset with the ability to troubleshoot complex technical issues and trace data discrepancies.
• Communication & Teamwork: Excellent interpersonal and communication skills to collaborate effectively with both technical peers and business stakeholders.
• Domain Awareness: Prior internship experience, academic coursework, or general interest in banking, fintech, or financial services reporting is an advantage.

What we can offer you:

By joining Citi Solutions Center Poland, you will not only be part of a business casual workplace with a hybrid working model (currently up to 2 days working at home per week), but also (potentially, subject to final offer) receive a competitive base salary and enjoy a whole host of additional benefits which can include:

• Employer paid Defined Contribution Pension Plan contribution of 6% of employee’s pensionable earnings (PPE Program)
• Employer paid Private Medical Care Package for employees and Private Medical Care Packages for certain family members available at preferential rates
• Employer paid Life Insurance Program for employees and Life Insurance for certain family members available at preferential rates
• Employee Assistance Program financed by Employer
• Paid Parental Leave Program (maternity and paternity leave; statutory and 2 weeks additional paid paternity leave)
• Sport Card for employees subsidized via Social Benefits Fund and Sport Cards for certain family members available at preferential rates
• Additional benefits from Company’s Social Benefit Fund, in particular: Holidays Allowance, support for sport and cultural activities, team building events.
• Additional day off for volunteering
• Cafeteria/ flex benefit – a company benefits system which enables employees to select and purchase benefits offered by a provider and available for employees on the platform.
• Opportunity to receive an annual discretionary incentive award
• Special offers and discounts for employees
• Copy and paste the URL below into a new tab on your web browser to view the Remuneration Regulations extract: https://tbcdn.talentbrew.com/company/287/cms/v3/docs/policies/RemunerationRegulations-KeyProvisions-CitibankEurope_plc_05012025_A.pdf

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self every day. We want the best talent around the world to be energized to join us, motivated to stay, and empowered to thrive.

Sounds like Citi has everything you need? Then apply to discover the true extent of your capabilities.

#LI-KK5

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location Full Time Salary Range:

140 350,00 zł - 221 850,00 zł

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

 

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.