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Koderia, s. r. o.
Registered office: Dúbravská cesta 1793/2, 841 04 Bratislava – Karlova Ves
Company ID (IČO): 47 975 890
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Registered in the Commercial Register of the Municipal Court Bratislava III, Section: Sro, File No.: 101669/B
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NewRemote 80%

Java Full-Stack Developer

Cooperation type: B2B
Compensation: 300 – 350 € / manday
Location: Vienna, Košice, Bratislava
Seniority: Senior
Project length: 14 months
Start: 11/1/2026
Language: English
Profession: Full-stack

Required technologies

AngularSpring DataOracleRedisSpring BootJavaPostgreSQLSpring WebApache Kafka

General Description

We are seeking a Java Full-Stack Developer for our banking client. The role focuses on developing production-ready application components and services across the frontend and backend, as well as supporting integrations with existing campaign management and mass email solutions.

The engagement covers both project delivery and the ongoing operational capability of the developed solutions.

What will you be doing?

  • Develop Angular frontend modules and user interface components.
  • Develop Java and Spring Boot microservices, including data access with Spring Data.
  • Build REST APIs using Spring Web.
  • Integrate applications with PostgreSQL and Oracle databases.
  • Implement Redis caching and Kafka producers and consumers for messaging.
  • Create Kubernetes deployment manifests or Helm charts.
  • Support integration with existing campaign management and mass email solutions.
  • Prepare source code, CI/CD-ready configuration, container images and deployment artifacts.
  • Create API documentation and operational runbooks.
  • Work with database connections, Kafka topics, Redis instances and container orchestration environments.
  • Collaborate in a cross-functional team of frontend and backend engineers through code reviews and a sprint-based delivery cadence.
  • Support both project delivery and ongoing operations.

Requirements

  • Professional experience with Java full-stack application development.
  • Hands-on experience with Spring Boot, including Spring Data and Spring Web.
  • Experience developing frontend applications with Angular.
  • Experience with SQL and relational databases, particularly PostgreSQL and Oracle.
  • Experience with Redis caching.
  • Experience with Kafka messaging, including producers, consumers and Kafka topics.
  • Experience with Kubernetes deployment and runtime environments; familiarity with deployment manifests or Helm charts.
  • Understanding of microservices, REST APIs, data access layers, backend services and database integration.
  • Experience with code repositories, CI/CD pipelines and container registries.
  • Ability to produce API documentation and operational runbooks.
  • Ability to work with secure database credentials, secure Kafka communication and secure container deployments.
  • Readiness to address access and credential requirements for Oracle, PostgreSQL, Redis and Kafka clusters, Kubernetes environment specifics, schema and topic contracts, and organizational security or network constraints.
  • No specific certifications or additional languages are required.

What we offer

The engagement offers the opportunity to contribute to a full-stack banking development project while supporting the ongoing operation of the resulting solutions.

  • Work on production-ready Angular, Java and Spring Boot application components and services.
  • Participation in integrations involving databases, messaging, caching and Kubernetes container orchestration.
  • Collaboration in a cross-functional, sprint-based engineering environment with code reviews.
  • Delivery of complete technical outputs, including source code, CI/CD-ready configuration, container images, deployment artifacts, API documentation and runbooks.

About the customer

The client operates in the banking sector and has existing campaign management and mass email solutions. The client is seeking integration support for these solutions as part of the project and for ongoing operations.

The technical environment includes Java and Spring Boot on the backend, Angular on the frontend, PostgreSQL and Oracle relational databases, Redis for caching, Kafka for messaging, and Kubernetes for container orchestration. The collaboration setup includes standard development workflows with code repositories, CI/CD pipelines and a container registry.

Success will be measured by the availability of a working Angular user interface, documented REST APIs, stable service-to-database connectivity, functioning Kafka messaging flows, operational Redis caching and successful deployments to Kubernetes clusters.

No explicit legal or compliance requirements have been provided. Implicit requirements include secure handling of database credentials, secure Kafka communication and secure container deployments.

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