Java Developer (Gis)

October 22, 2026

Remote

Senior

Warsaw, Poland

Keep in mind

Original vacancy is in Polish
You will likely need Polish for the job. The employer can confirm

Also worth knowing

B2B contract

Description

An IT services company that for over 7 years has been connecting IT specialists with meaningful projects for public institutions and commercial clients is looking for a Java Developer with GIS knowledge. The role is a long-term engagement in a client's project team, focused on modernising systems and processes used by millions of people. The work covers microservice development in Java and Spring Boot, SSO and authorisation integrations, and publishing spatial data through GeoServer, PostGIS and Oracle Spatial.

Responsibilities

Developing Java and Spring Boot applications in line with microservice architecture
Maintaining and configuring Apereo CAS as the central SSO login system
Integrating external systems with CAS using SAML, OAuth2, LDAP and REST API
Participating in integration and publication of spatial data through GeoServer
Creating and developing APIs for map systems and spatial databases
Writing and optimising database queries, including PostGIS and Oracle Spatial
Cooperating with the frontend team and spatial data analysts
Analysing tickets and providing technical support for authorisation and spatial data
Taking part in Scrum meetings: daily, review, retro and planning
Preparing technical documentation such as UML diagrams, CAS configuration and OpenAPI docs
Participating in code reviews and internal knowledge sharing

Requirements

Minimum 5 years of experience as a Java Developer
Practical knowledge of Java 11+ and Spring Boot 2.x or 3.x
Knowledge of SSO protocols: SAML2, OAuth2 and OIDC
Experience with PostgreSQL/PostGIS or Oracle databases
Ability to build REST API, model the domain and manage user sessions
Knowledge of design patterns, clean architecture and DDD principles
Practical knowledge of GIT, Maven or Gradle and CI/CD tools such as GitLab CI or Jenkins
Working knowledge of Linux/Unix at a developer level
Experience with Azure or AWS cloud environments
Nice to have: integration and configuration of Apereo CAS including LDAP integration
Nice to have: knowledge of Keycloak or other IAM systems
Nice to have: experience with GeoServer, layer configuration, WMS/WFS and styling
Nice to have: knowledge of spatial data concepts such as bounding box, CRS and GML
Nice to have: SOAP/WebService and XML Schema, Docker and Kubernetes basics
Nice to have: monitoring tools such as Prometheus, Grafana and ELK
Nice to have: practical knowledge of jOOQ and JasperReports libraries

Conditions

Long-term cooperation with project continuity after the current project ends
Stable cooperation based on a B2B contract
Rate of up to 105 PLN per hour net plus VAT
Fully remote work model
Recruitment process of two stages: recruiter interview and technical interview with the client
Full-time employment