Senior Backend Java Engineer – Hybrid, Spring Boot

Jit Team; Poland; Hybrid; PLN 240,000 - 300,000; Full time

Benefits offered by this job

Flexible work organization

International work environment

Scandinavian culture and work-life-b_

Job summary

Jit Team is seeking a Senior Backend Java Developer in Poland to modernize and maintain platforms for tax processing, account management, and investment operations. You will work in a hybrid setup with colleagues across international teams, focusing on scalable Java backend solutions and the latest Java ecosystem tools.

You will upgrade to Java 17+/21, apply Spring Boot 3.3.x, and collaborate with financial analysts to translate requirements into robust software.

Qualifications

• Several years of experience as a Senior Java Developer.
• Excellent knowledge of Spring Boot and Java ecosystems.
• Hands-on experience with application modernization and migration projects.
• Strong SQL skills with PostgreSQL.
• Experience with messaging (JMS, MQ) and modern CI/CD practices.

Responsibilities

• Lead application modernization activities, including upgrades to Java 17+/Java 21 and Spring Boot 3.3.x.
• Design, develop, and maintain Java-based applications supporting savings and investment products.
• Build and enhance calculation engines ensuring tax regulation compliance across multiple countries.
• Implement solutions for complex business processes, tax authority integrations, and customer reporting.
• Contribute to system architecture discussions and collaborate with stakeholders.

Skills

Java

Spring Boot

Relational DBs & SQL

OpenAPI/AsyncAPI

Git & CI/CD

Communication

Team Collaboration

Tools

Hibernate

JMS

MQ

OpenAPI

AsyncAPI

Job description

Jit Team is seeking a Senior Backend Java Developer in Poland to modernize and maintain platforms for tax processing, account management, and investment operations. You will work in a hybrid setup with colleagues across international teams, focusing on scalable Java backend solutions and the latest Java ecosystem tools.

You will upgrade to Java 17+/21, apply Spring Boot 3.3.x, and collaborate with financial analysts to translate requirements into robust software.