Job Specification – Java Technical Analyst

Role Overview

Position: Java Technical Analyst
Location: Warsaw, Poland (Hybrid – 4 days onsite / 1 day remote)

Position Summary

We are looking for an experienced Java Technical Analyst to join a business-critical FinTech project supporting the development and modernization of a large-scale Terminal Management System (TMS) managing over 300,000 payment terminals.

This role is ideal for someone who enjoys understanding complex enterprise systems, analyzing existing code, and delivering technical solutions within a legacy environment. You will work closely with developers, architects, analysts, and business stakeholders to enhance and modernize mission-critical applications while ensuring system stability, maintainability, and performance.

Key Responsibilities

Technical Analysis & Solution Design

• Analyze business and technical requirements to design effective application solutions.

• Review functional and analytical documentation and translate requirements into technical implementations.

• Prepare and maintain comprehensive technical documentation.

• Perform reverse engineering of existing applications using source code, technical documentation, databases, and business processes.

• Analyze legacy applications and recommend technical improvements.

Development & Modernization

• Implement enhancements and modifications within existing Java applications.

• Support technical upgrades and modernization of legacy systems.

• Design, develop, and test application components following best engineering practices.

• Develop automated test cases and support application quality initiatives.

Integration & System Support

• Participate in system integrations using REST APIs and messaging technologies.

• Collaborate with cross-functional teams to troubleshoot and resolve technical issues.

• Contribute to improving application performance, maintainability, and security.

• Support continuous improvement of development processes and technical standards.

Required Qualifications

Experience

• 4+ years of commercial experience with Java development.

• Experience working with large enterprise or legacy systems.

• Practical experience in technical analysis, software design, and system integration.

• Experience maintaining and modernizing existing applications.

Technical Skills

• Strong knowledge of Java 8+ and object-oriented programming.

• Hands-on experience with Spring, Spring Boot, Hibernate/JPA, and JEE.

• Experience with RESTful APIs and distributed systems.

• Good understanding of RabbitMQ or similar messaging technologies.

• Experience with Oracle databases and SQL.

• Knowledge of application servers such as JBoss or WildFly.

• Familiarity with Maven, Git, GitLab, GitLab CI/CD, Jenkins, Nexus, and Jira.

• Experience creating technical documentation and working with reverse engineering activities.

Soft Skills

• Strong analytical and problem-solving mindset.

• Ability to understand complex business processes and legacy architectures.

• Excellent communication and stakeholder collaboration skills.

• Ability to work independently while contributing to a collaborative team environment.

• Good written and spoken English (B2 or higher).

Nice to Have

• Experience in FinTech, banking, or payment processing environments.

• Familiarity with distributed transactions and enterprise integration patterns.

• Experience with code quality and security scanning tools (e.g., Fortify, Sonatype).

• Exposure to legacy system modernization projects.

What Success Looks Like

• Delivering high-quality technical solutions for complex enterprise applications.

• Successfully analyzing and modernizing legacy code while maintaining system stability.

• Producing clear technical documentation and supporting knowledge sharing.

• Collaborating effectively with developers, architects, analysts, and business stakeholders.

• Contributing to the continuous evolution of a large-scale, mission-critical payment platform.