Senior Java Engineer - Data & API, Hybrid (Warsaw)

BEC Financial Technologies; Warszawa; Hybrid; PLN 210,000 - 260,000; 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

Tennis clubs and social events

Flexible starting time

Health insurance

Job summary

BEC Financial Technologies in Warsaw Poland is seeking a Senior Software Engineer (Java) to support and evolve our CRA data products and Overdraft management solution. You will join a bilingual engineering team co-located in Warsaw and Roskilde, with occasional travel to Denmark and a hybrid work model allowing up to 8 remote days per month.

In this role you will design, build, and optimize Java-based batch ETL processes, REST APIs, and cloud-native services, while improving observability, test

Qualifications

• Have several years of proven experience as software engineer in the financial industry.
• Strong experience with Java (version 17 or newer) and Spring Boot.
• Solid knowledge of RESTful API design and development.
• Experience with relational databases (e.g., Microsoft SQL Server) and JDBC.
• Experience with Kafka, Docker, Kubernetes, and Helm.
• Fluency in English is required.

Responsibilities

• Participate in architecture and design discussions for future solutions.
• Write clean, maintainable code following best practices.
• Develop and support Java batch ETL processes replacing legacy BI/Informatica jobs.
• Design and implement unit, integration, and API tests (e.g., Postman).
• Maintain and enhance APIs delivering rating- and overdraft-related data.
• Optimize database queries and collaborate with CI/CD pipelines (Jenkins).
• Manage and deploy applications using Kubernetes and Helm.
• Monitor observability using Elastic Stack (ELK, APM).

Skills

Java

Spring Boot

REST API

SQL Server

Kafka

Docker

Kubernetes

Jenkins

Postman

ELK/APM

Tools

Postman

Jenkins

Docker

Kubernetes

Helm

Job description

BEC Financial Technologies in Warsaw Poland is seeking a Senior Software Engineer (Java) to support and evolve our CRA data products and Overdraft management solution. You will join a bilingual engineering team co-located in Warsaw and Roskilde, with occasional travel to Denmark and a hybrid work model allowing up to 8 remote days per month.

In this role you will design, build, and optimize Java-based batch ETL processes, REST APIs, and cloud-native services, while improving observability, test