Full-Stack (JAVA/KOTLIN) Engineer with German (Regular/Senior) w Wrocław, Polska

Full-Stack (JAVA/KOTLIN) Engineer with German (Regular/Senior)

Kotlin Java German

Full-Stack (JAVA/KOTLIN) Engineer with German (Regular/Senior)

Development

Start: ASAP | Full-time | Long-term (min. 12 months)
Model: Hybrid / Remote + possible client visits
Project: Financial industry (DACH)

Project Overview

Join https://jobeax.com/link/z0pjdfNjViVMhL5C and become part of a team developing a mature, enterprise-grade financial platform used by institutions operating in the Wealth Management sector. The solution serves as a Financial CRM, advisory system, and client portal , supporting financial advisors, end clients, and business processes related to documentation and customer management.

The platform has been continuously developed for many years as a stable, business-critical product. It is based on a monolithic architecture with a reactive data model . Your day-to-day work will focus primarily on enhancing the application layer, customizing existing functionalities, debugging complex business processes, and maintaining high-quality solutions. This role is ideal for engineers who enjoy working with an established product, understanding existing architecture, and continuously improving it rather than building greenfield microservices.

Responsibilities

• Develop and maintain a financial platform used by Wealth Management institutions.
• Enhance and customize existing business functionalities.
• Work primarily on the frontend layer (approximately 70%) using Kotlin UI and modern web technologies.
• Build and modify UI components and layouts using CSS and Kotlin .
• Analyze, troubleshoot, and debug applications built with Java and Kotlin.
• Develop business logic and work with the platform's reactive data model.
• Contribute to backend development (approximately 20–30%), including REST integrations.
• Collaborate closely with the Product Owner, Solution Architect, and development team.
• Investigate issues, fix defects, and improve application stability.
• Perform manual testing of implemented features when required.

Requirements

• At least 3 years of commercial experience as a Java /Kotlin Developer or Full Stack Developer.
• Strong knowledge of Java and Kotlin .
• Experience in web application development.
• Strong knowledge of CSS and HTML .
• Practical experience with JavaScript , or willingness to work with Kotlin UI as an alternative to JavaScript.
• Solid debugging skills in Java /Kotlin applications and the ability to analyze existing codebases.
• Experience working with Git .
• Knowledge of the Spring Framework .
• Strong analytical thinking and ability to work independently.
• German language proficiency (minimum B2) – mandatory.
• Polish language proficiency (minimum B1) .

Nice to Have

• Experience with Vaadin .
• Experience developing Full Stack Kotlin applications.
• Experience in the banking or financial sector .
• Experience with Wealth Management solutions.
• Knowledge of reactive data models .
• Experience working with monolithic enterprise applications .
• Experience with Spring Boot .
• Experience with jOOQ .
• Experience with Aspose or similar document generation libraries (Word, Excel, PDF).

We offer

• Long-term cooperation — minimum 12 months, with a high probability of extension.
• Remote work with occasional visits to the Wrocław office and client — flexibility with the option (and sometimes need) for onsite collaboration.
• Transparent communication and a flat structure — quick access to decision-makers.
• Individual development path — training budget, external courses, knowledge-sharing sessions.
• A supportive, close-knit team focused on openness, trust, and partnership.
• Engaging projects — solutions in e-learning, energy, finance, manufacturing, logistics.
• International teams and clients — active use of English and/or German in real project settings.
• Language classes — English and German lessons funded by the company (all levels, incl. native speakers).
• Benefits package — LuxMed healthcare, Unum life insurance, Multisport card.
• Well-being & integration — team meetings, internal initiatives, squash/badminton groups, and daily activities that build relationships.