Senior Java Full-Stack Developer - Banking Microservices

Unleash secure, scalable banking innovation - build the next generation of corporate banking through modern Java and microservices!

Warsaw-based opportunity with hybrid work model - 2 days per month in the office.

As a Senior Java Full-Stack Developer, you will be working for our client, one of the leaders in online banking, on the development of a corporate banking platform supporting critical business and technical processes. You will help deliver secure, scalable, highly available applications using modern Java and Angular technologies. Working in an Agile environment with experienced development teams, you will contribute to architectural decisions, application performance, development quality, and continuous delivery.

Your main responsibilities

• Develop and maintain backend services using Java 17+ and Spring Boot.
• Build and enhance frontend applications with Angular 20+ and JavaScript.
• Design and implement solutions based on microservices architecture.
• Develop synchronous and asynchronous integrations using REST APIs, web services, and messaging technologies.
• Build scalable, highly available, and performant applications.
• Work with relational databases, preferably Oracle.
• Apply software engineering best practices, including code reviews, automated testing, and application builds.
• Contribute to the automation of testing, deployment, logging, and monitoring processes while using tools such as Claude Code and Codex to support daily engineering tasks.

You're ideal for this role if you have

• At least 5 years of commercial experience with Java and Angular.
• Strong knowledge of Java 17+, Spring, and Spring Boot.
• Practical experience with Angular 20+, JavaScript, and Node.js.
• Experience designing and developing microservices-based applications.
• Practical experience using AI-powered development tools such as Claude Code or Codex.
• Experience with REST APIs, web services, and asynchronous messaging technologies such as IBM MQ, ActiveMQ, or Kafka.
• Experience developing highly available, scalable, and performant applications.
• Knowledge of relational databases, preferably Oracle, as well as Maven or Gradle, Git, and Kubernetes.

It is a strong plus if you have

• Familiarity with SonarQube, Jenkins, Grafana, Splunk, or Elasticsearch.
• Experience with performance testing tools such as Gatling.
• Higher technical education in Computer Science, Electronics, or a related field.

Language Required for the role: Polish is required; Communicative English sufficient to read and understand technical documentation is also required.

Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role.

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Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.