Backend Java Engineer - Fintech APIs

ARQ; Kraków; Hybrid; PLN 150,000 - 210,000; Full time

Job summary

ARQ, Krakow-based fintech, is seeking a Backend Engineer (Java) to design, build, and maintain scalable backend systems powering cross-border money movement and wealth management tools. You will collaborate with a talented team to deliver robust services that handle high volumes safely and efficiently.

The role focuses on greenfield development and evolving existing systems, using Java 17+ with Spring Boot and PostgreSQL.

Qualifications

• Bachelor's degree in CS or related field is required.
• English fluency is essential for collaboration and delivery.
• Experience building backend systems and scalable services.

Responsibilities

• Design, develop, and maintain backend systems.
• Build REST APIs and microservices for payments and services.
• Work with Spring Boot and PostgreSQL to deliver robust features.
• Follow clean code, TDD, and CI/CD for rapid, reliable delivery.

Skills

English fluency

Backend development experience

Education

Bachelor's Degree in CS / Math / Physics or related field

Tools

Java

Spring Boot

PostgreSQL

Job description

ARQ, Krakow-based fintech, is seeking a Backend Engineer (Java) to design, build, and maintain scalable backend systems powering cross-border money movement and wealth management tools. You will collaborate with a talented team to deliver robust services that handle high volumes safely and efficiently.

The role focuses on greenfield development and evolving existing systems, using Java 17+ with Spring Boot and PostgreSQL.