Backstage Lead Developer 

Start Date: 11/05/2026

End Date: 31/12/2026

Location: Brussels

Work Regime: Full-time, with 2 days of on-site presence per week required.

Responsibilities:

• Support in the analysis, design, extension, and operation of the existing Backstage platform.
• Provide architectural consulting, plugin development, platform extensions, integrations, and comprehensive technical documentation.
• Develop technical concepts for the extension and adaptation of the platform.
• Design scalable, high-performance, and maintainable solutions in compliance with IT, architecture, security, and compliance standards.
• Analyze and consider security requirements, operating models, and target architectures.
• Formulate technical recommendations and decision-support documentation for future platform extensions and strategic evolution.
• Conduct comprehensive analysis of the architecture and platform.
• Assess existing technologies, interfaces, plugin structures, and integration mechanisms.
• Elicit project-specific and domain-specific requirements from organizational, functional, and technical perspectives.
• Consolidate and present analysis results to support architecture and design decisions.
• Design, develop, test, and document custom Backstage plugins (frontend and backend).
• Implement defined technical and business workflows and use cases.
• Integrate plugins with internal systems, services, and end-to-end process chains.
• Prepare clear and traceable technical documentation.
• Implement adaptations and extensions to the Backstage platform.
• Enhance frontend and backend components to support organizational structures, role models, and business processes.
• Ensure compliance with functional and non-functional requirements, including performance, stability, security, and maintainability.
• Design and implement technical improvements based on project outcomes and stakeholder requirements.
• Extend and configure the Backstage backend to support additional services and integrations.
• Integrate internal tools, APIs, CI/CD pipelines, identity management, and asset systems.
• Configure and document interfaces, authentication, and authorization mechanisms.
• Provide technical advisory services regarding integration patterns, security architectures, and operating models.
• Create and maintain comprehensive technical documentation.

Requirements:

• At least 2 years of proven experience in the design, customization, extension, and maintenance of Backstage.
• Demonstrated experience in the development and customization of Backstage plugins, including both frontend and backend plugins.
• At least 4 years of experience in developing backend services using Node.js, preferably in the context of platform or integration solutions.
• At least 3 years of experience in developing frontend applications using React.
• At least 1 year of experience in the design and implementation of CI/CD pipelines, preferably using Azure DevOps.
• Proven experience with Docker and Kubernetes, particularly in the operation and deployment of platform services.
• Experience with Azure or comparable cloud platforms (e.g., AWS, GCP), especially in the context of cloud-native applications and platform services.