Senior Java Fullstack Developer (ST)

Position Overview

• Location Type: Remote (with up to 2 quarterly meetings at the office + first day at the office)
• Job Type: B2B
• Salary: Up to 180 PLN/H net + VAT

We are seeking a Java Developer to join a team developing 46 after-sales processes for individual clients across web, mobile app, and branches. The project is based on a microservices architecture and a BPMN engine (Camunda), with a backend in Java and Webflux, and a frontend built from ready-made components. Work involves API integrations, asynchronous queue handling, and dynamic forms. The task distribution is 80% back-end and 20% front-end.

Requirements

• Minimum 5 years of experience as a Java Developer.
• Very good knowledge of Java 11+ / 17 and Spring Boot.
• Experience in reactive programming using Spring WebFlux.
• Knowledge of REST API and OpenAPI / Swagger standards.
• Practical experience with BPMN engines, e.g., Camunda (or alternatively: Activiti, Flowable, jBPM).
• Knowledge of SQL and Git.
• Experience with CI/CD processes.
• Knowledge of hexagonal architecture.
• Basic knowledge of JavaScript/TypeScript and Angular.

Responsibilities

• Developing and maintaining after-sales processes for individual clients.
• Working with a microservices architecture and Camunda BPMN engine.
• Backend development using Java and Webflux.
• Frontend development using ready-made components.
• Performing API integrations.
• Handling asynchronous queues.
• Working with dynamic forms.
• Approximately 80% back-end and 20% front-end tasks.

Nice to Have

• Experience with queuing systems (Kafka, RabbitMQ).
• Experience with monitoring tools: Grafana, ELK, Prometheus, Zipkin.
• Experience with integration testing: WebTestClient, testcontainers.
• Familiarity with frontends: Angular/React, RxJS, Storybook.

Company Information

ALTER SOLUTIONS is an IT services company with a mission to deliver the best solutions to clients worldwide by analyzing client needs and matching them with employee skills and aspirations. We prioritize a satisfying experience for every Employee and Consultant, fostering a community of diverse personalities.

Additional Information

• Department: Software Offer
• Industry: Computer Software
• Function: Finance
• Experience Level: Mid-Senior Level
• Language: Polish
• Posted by: [Not specified]

What We Offer

• Access to local and international projects with clients from France, Germany, Portugal, the UK, and Benelux countries.
• Support for professional development: training, technical certifications, conference participation, foreign language courses, and soft skills training (subsidized up to 2,000 PLN).
• B2B contract.
• Candidate referral bonus up to 6,000 PLN.
• Fully paid Medicover card.
• Multisport card.
• Regular integration events and gifts.
• Mobility Program.
• Long-term cooperation.

Data Controller Information

If you applied for this position, the Controller of your personal data will be ALTER SOLUTIONS POLSKA Sp. z o.o., with its registered office at Przyokopowa 31, 01-208 Warsaw. Your personal data will be processed for the purpose of the recruitment process and future recruitment processes. You have the right to access, rectify, erase, restrict processing, data portability, object to processing, and lodge a complaint with the President of the Personal Data Protection Office.