ServiceNow Middlelayer Developer (m/f/d)

For the further development of a complex ServiceNow platform, a developer specialized in the middle layer is sought. The focus is on implementing business logic, integrations, and processing data between the frontend and backend systems.

• Typical tasks:

• Designing and developing server-side business logic in ServiceNow using Business Rules, Script Includes, and Workflows.

• Designing, implementing, and maintaining REST- and SOAP-based integrations with third-party systems (e.g. SAP, Jira, HR systems) via IntegrationHub or custom scripts.

• Developing and optimizing data flows and transformations within the platform.

• Performance analysis and optimization of server-side scripts and database interactions.

• Ensuring platform stability and security through robust and error-resistant coding.

• Relevant technologies, tools or methods:

• ServiceNow platform: in-depth knowledge of the Glide API (GlideRecord, GlideSystem), server-side scripting (JavaScript ES5).

• Integrations: IntegrationHub (Spokes), REST/SOAP API Explorer, JSON, XML.

• Automation: Flow Designer, Workflow Editor.

• Development tools: ServiceNow Studio, VS Code with ServiceNow plugins.

• Methodology: Agile (Scrum), use of Update Sets and Application Scopes for deployment.

• Typical KPIs or success metrics:

• Transaction response times for critical middle layer processes.

• Error rate in API calls and integrations (< 1%).

• Success rate of automated workflows.

• Code complexity (e.g. measured via SonarQube integration).

• Adoption rate of new features enabled by the middle layer.

• Key challenges, risks or specifics:

• Complexity of dependencies between various ServiceNow modules and external systems.

• Ensuring scalability under high transaction volumes.

• Debugging asynchronous processes and integrations.

• Following ServiceNow best practices to preserve platform upgradability ("out-of-the-box" vs. customizing).

• Concrete deliverables:

• Implemented and tested Script Includes and Business Rules.

• Fully configured and documented IntegrationHub integrations.

• Technical documentation of the developed logic and data flows.

• Completed Update Sets, ready for deployment to production.

• Lessons learned / best practices:

• Encapsulate reusable logic in Script Includes rather than duplicating it across multiple Business Rules.

• Use asynchronous Business Rules for long-running operations to avoid blocking the user experience.

• Prefer the Flow Designer over the classic Workflow Editor for new automations.

• Several years of experience developing on the ServiceNow platform.
• Proven expertise in server-side JavaScript and the ServiceNow API.
• Solid experience connecting third-party systems via REST/SOAP.
• Must-haves: ServiceNow Certified Application Developer (CAD) certification, analytical mindset, independent and precise working style.
• Nice-to-haves: experience with ServiceNow IntegrationHub, knowledge of IT Service Management (ITSM) or other ServiceNow modules (ITOM, HRSD), experience with performance analysis tools.
• Personality: problem-solving mindset, good communication skills for coordination with architects and frontend developers, attention to detail.