Role & seniority: Senior Technical Tester – API Integration

Location & work type: Copenhagen, Denmark; Onsite five days/week; Contract – Full-Time (37 hours/week); Start 26 Feb 2026; End 31 Dec 2027

Stack / tools: Java / Spring Boot; REST APIs / GraphQL; Cucumber; Insomnia / Postman; SQL (PostgreSQL); Jenkins; Rancher; Git; Xray for Jira; Confluence

Top 3 responsibilities

Plan, coordinate and execute End-to-End and API testing (REST/GraphQL), including test design, data validation, and integration checks
Develop and maintain automated test scripts and frameworks (Cucumber preferred); document tests and results; validate data flows and system changes
Incident/production support: perform defect analysis, troubleshoot Rancher-based issues, assist release planning and deployments

Must-have skills

Technical test planning and execution
API testing (REST and GraphQL)
Test automation (Cucumber preferred)
SQL and database handling (PostgreSQL)
Incident and defect analysis
Test data creation/management
Professional Danish language skills

Nice-to-haves

Experience in property or land data domain
Experience with Rancher, Jenkins, Git
Strong background in structured technical test design

Project context: Java-based Property Data Platform (EDPL); event-driven architecture; DevOps toolchain; agile framework inspired by SAFe/Kanban; cross-functional, collaborative team

Full Description

Role Senior Technical Tester – API Integration Location Copenhagen, Denmark (Onsite – 5 days per week) Type Contract – Full-Time (37 hours per week) Start Date 26 February 2026 End Date 31 December 2027 Project Overview This assignment supports the modernization and further development of a Java-based Property Data Platform (EDPL).

The platform

Collects public base data
Distributes property and land data to internal systems
Operates within a DevOps toolchain
Uses event-driven architecture
Is built with Java and Spring Boot
The team follows an agile methodology inspired by SAFe and Kanban and works in a collaborative, cross-functional setup.
Key ResponsibilitiesTechnical Testing
Participate in detailed test planning (Agile and Waterfall setups)
Plan and coordinate End-to-End testing
Perform test analysis and design
Review and refine requirements
Develop and execute test plans and test cases
Test infrastructure changes and system enhancements
Validate data flows and system integrations
Test REST APIs and GraphQL services
Perform file transfer testing
Conduct database-level data validation
Test Automation
Develop automated test scripts (REST, GraphQL, file extracts)
Implement and maintain automation frameworks
Work with Cucumber for automation
Maintain test documentation in test portal tools
Evaluate and report test results
Incident & Production Support
Perform technical analysis for defects and incidents
Troubleshoot production issues (Rancher environment)
Support release preparation and deployment
Assist release managers and operations teams
Test Data & Environment Management
Create and maintain structured test data
Ensure test environment stability
Handle certificate management
Develop Java stubs and drivers when required
Tools & Technologies
Java / Spring Boot
REST APIs / GraphQL
Cucumber
Insomnia / Postman
SQL
PostgreSQL
Jenkins
Rancher
Git
Xray for Jira
Confluence
Required Skills
Technical test planning and execution