About the Position

We are seeking a Senior Java Developer to join our team in Warsaw, Poland, for a hybrid role, focusing on backend services for digital banking.

About our Client

You will be working for a prominent player in the banking industry, helping shape the future of digital business banking across the Nordic region. The client builds and delivers innovative web and mobile banking solutions used by customers in Denmark, Finland, Sweden, and Norway, continuously evolving the next generation of scalable digital banking services.

Responsibilities

Design, develop, test, and maintain backend services that power digital banking platforms.
Drive backend testing activities (performance, unit, integration, and API testing) ensuring highly reliable and scalable solutions.
Leverage AI-powered tools as a standard part of your daily development, testing, and delivery practices.
Collaborate closely with business stakeholders to understand requirements and translate business needs into technical solutions.
Contribute to the full product lifecycle-from technical design and implementation to continuous improvement and operational support.
Work collaboratively within a cross-functional agile team based in a vibrant Warsaw hub.

Requirements

Strong experience as a Backend Developer (Regular to Senior level).
Solid proficiency in Java 21+, REST APIs, and microservices architecture.
Hands-on experience with Spring Boot 3.4, Spring WebFlux, and Hibernate.
Experience in test automation (JUnit5, Cucumber, WireMock).
Working knowledge of Git, Maven, Jenkins, Oracle DB/DB2/SQL, and Splunk.
Strong understanding of SOLID principles (knowledge of reactive programming is a major advantage).
Mandatory experience in utilizing AI tools in software development.
Fluent English (essential for daily communication in an international environment).

Nice to Have

Frontend development experience (JavaScript, TypeScript, Angular 2+).
Familiarity with testing tools and frameworks like Playwright, qTest, and Gherkin.
ISTQB Foundation certification.

We Offer

Salary: Up to 150 PLN/h net + VAT.
Contract: B2B agreement
Work model: Hybrid (3 days per week in the Warsaw office).

About the Company

Optiveum is a recruitment and consulting company created based on our 20-plus years of experience in HR & IT services.

We work for Clients located in Poland and abroad providing our local and international Candidates with Project-based or Permanent job opportunities in a remote or office-based model.

COMPANY DATA

Optiveum Sp. z o.o.

ul. Tomasza Zana 43 lok. 2.1 20-601 Lublin, Poland

nr KRS: 0000834436, NIP 7010975729

Founded in 2020

Java Developer

Tech Stack

Job Description, Responsibilities & Requirements