Senior Java Spring Backend Engineer – Fintech, Warsaw

EC Markets LTD; Warszawa; Presencial; PLN 169.000 - 253.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Annual bonus scheme

Health insurance

Learning budget and company hardware

Travel opportunities

Descripción de la vacante

EC Markets, a Warsaw-based FCA-regulated FX and CFD broker, seeks a Backend Developer (Java) to strengthen the Spring Boot API at the heart of our platform. You will own API features, integrate with trading, custody, payments, and identity services, and ensure correctness and security in a dynamic fintech environment.

Join a team delivering reliable services, auditable money movements, robust testing, and secure-by-default practices while collaborating across engineering and product teams in a

Formación

• 4+ years of back-end development in Java (17 or later) with Spring Boot in production.
• REST API design and integration patterns: webhooks, retries, idempotency and asynchronous processing.
• Strong SQL and PostgreSQL, including transactions and schema migrations (Flyway, Liquibase or similar).
• Automated testing with JUnit and integration tests.
• Working knowledge of AWS.
• Experience building systems where data correctness is critical, such as payments, ledgers or financial transactions.
• Git-based workflow with pull-request reviews and CI/CD.
• Professional English for daily work with colleagues across the Group.

Responsabilidades

• Design, build and maintain features in our Spring Boot services and shared libraries.
• Build and strengthen integrations with trading, custody, identity verification, payments, CRM and notification platforms.
• Make sure money movements (deposits, withdrawals and transfers) are correct, auditable and reconcilable.
• Own PostgreSQL schema design, migrations and query performance for your features.
• Work in Scrum sprints and take work through code review, testing environments and production release.

Conocimientos

Java (Backend)

REST API design

SQL & PostgreSQL

JUnit testing

Git & CI/CD

AI-assisted development tools

English proficiency

Educación

Degree in Computer Science or related field

4–7 years backend experience

Herramientas

Spring Boot

Java 17+

AWS

PostgreSQL

Descripción del empleo

EC Markets, a Warsaw-based FCA-regulated FX and CFD broker, seeks a Backend Developer (Java) to strengthen the Spring Boot API at the heart of our platform. You will own API features, integrate with trading, custody, payments, and identity services, and ensure correctness and security in a dynamic fintech environment.

Join a team delivering reliable services, auditable money movements, robust testing, and secure-by-default practices while collaborating across engineering and product teams in a