Senior Java Backend Engineer — Core Banking Platform

BEC Financial Technologies; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Mental health support

Free lunch at the office

Professional development budget

Referral bonus up to PLN 10,000

Benefit platform PLN 600 monthly

Social clubs and events

Job summary

BEC Financial Technologies in Warszawa is seeking a skilled Java backend engineer to join our Technology Transformation Program. You will design and implement Java-based integrations for core banking services, collaborate with analysts and architects, and contribute to scalable, reliable software in a regulated environment.

You will work on RESTful APIs, Kafka-based integrations, and containerized deployments using Docker and OpenShift, while mentoring juniors and driving architectural

Qualifications

• Experience building Java backend apps with Spring Boot.
• Strong SQL and data modeling skills.
• Experience designing REST and SOAP web services.
• Familiarity with Git, CI/CD, Docker, and OpenShift.
• Agile delivery with stakeholder communication.

Responsibilities

• Develop and maintain Java backend solutions within CORE BANKING domain.
• Design, implement, and evolve RESTful APIs and integration solutions.
• Collaborate with Business Analysts, Product Owner, QA, architects, and other developers to clarify requirements and deliver high quality solution.
• Contribute to solution design, code reviews, and architectural discussions to ensure clean, maintainable, and robust solutions.
• Take responsibility for ensuring stability, performance, and quality of the systems owned by the team.
• Actively participate in Scrum ceremonies and contribute to continuous improvement of team practices.
• Support analysis, troubleshooting, and refinement of existing solutions as the platform evolves.

Skills

Java

Spring Boot

SQL

REST APIs

Kafka

OpenShift

Git CI/CD

Agile/Scrum

Education

Bachelor's degree in Computer Science

Tools

JPA/Hibernate

Docker

OpenShift

SOAP

REST API design

Job description

BEC Financial Technologies in Warszawa is seeking a skilled Java backend engineer to join our Technology Transformation Program. You will design and implement Java-based integrations for core banking services, collaborate with analysts and architects, and contribute to scalable, reliable software in a regulated environment.

You will work on RESTful APIs, Kafka-based integrations, and containerized deployments using Docker and OpenShift, while mentoring juniors and driving architectural