Senior Java Backend Architect - Remote | Flowable SaaS

VM.PL; Wrocław; On-site; PLN 165,312 - 227,304; Full time

Benefits offered by this job

Remote work option

Office in Wrocław (optional)

AI-assisted tooling

English and German language lessons

Job summary

VM.PL is hiring an experienced Java backend engineer to develop a multi-tenant, cloud-native platform for EU data processing compliance. You will embed a Flowable BPMN engine in Spring Boot, implement tenant isolation, and build REST APIs for case management and document handling.

The role requires strong Java and Spring Boot expertise, PostgreSQL proficiency, and OpenAPI-driven API design, with security via Keycloak/OIDC. Remote work from Poland is allowed with an office option in Wrocław.

Qualifications

• Minimum five years commercial Java development experience.

Responsibilities

• Implementing BPMN processes in Flowable for the complete EPOC and EPOC-PR case lifecycle
• Configuring the Flowable engine as a library embedded within the Spring Boot application, using shared database transactions
• Building a multi-tenant data access layer and enforcing tenant isolation at the repository and PostgreSQL Row-Level Security levels
• Creating ArchUnit tests to verify that the code does not allow access to data belonging to other tenants
• Developing REST APIs for case creation, status queries and document uploads
• Designing API contracts using an OpenAPI specification-first approach
• Integrating the platform with external telecommunications operators’ CRM systems using the adapter pattern
• Implementing JWT validation and role-based access control through Keycloak and OIDC integration
• Handling document storage in S3 Object Lock and conflicts between GDPR-based deletion requests and active legal preservation holds
• Creating integration tests with JUnit 5 and Testcontainers for PostgreSQL, Keycloak and S3-compatible storage
• Participating in architecture reviews and documenting significant technical decisions in the form of Architecture Decision Records
• Using AI-assisted coding tools while ensuring that all code undergoes mandatory human review and automated security checks

Skills

Java

Spring Boot

BPMN

Flowable

PostgreSQL

REST APIs

OpenAPI

Testcontainers

Spring Security

CI/CD

Tools

Flowable Engine

Spring Boot 3

Job description

VM.PL is hiring an experienced Java backend engineer to develop a multi-tenant, cloud-native platform for EU data processing compliance. You will embed a Flowable BPMN engine in Spring Boot, implement tenant isolation, and build REST APIs for case management and document handling.

The role requires strong Java and Spring Boot expertise, PostgreSQL proficiency, and OpenAPI-driven API design, with security via Keycloak/OIDC. Remote work from Poland is allowed with an office option in Wrocław.