Developer

• Analyse technical requirements and plan implementation approaches while identifying risks.
• Develop, maintain and improve Drupal websites, including modules, content models, configurations and custom features.
• Create and enhance reusable templates and components for UNEP's web platforms including the corporate website and Starter Kit.
• Implement technical solutions for migrating child, campaign and project websites to UNEP's common templates and standards.
• Develop hybrid or decoupled Drupal features using React, Next.js and related technologies where suitable.
• Build and maintain APIs and integrations for content and data exchange between UNEP web platforms and external systems.
• Improve search and content discovery using OpenSearch, semantic search and AI-supported functionality.
• Maintain multilingual website functionality including templates, translation workflows and integrations.
• Manage Drupal core, contributed and custom modules, themes and dependencies, including security updates.
• Apply Git-based development workflows including code review, testing and CI/CD deployment.
• Test and troubleshoot website functionality, integrations, performance and deployment issues.
• Ensure web platforms meet security, accessibility, performance, responsive design, interoperability and maintainability standards.
• Review code and provide technical quality assurance across the web portfolio.
• Provide technical guidance to vendors and other developers working on UNEP web platforms.

• A master's degree or equivalent in computer science, information systems, software engineering or a related field is required; alternatively, a bachelor's degree with two additional years of relevant experience may be accepted.
• At least two years of professional experience in web development with strong skills in PHP and Drupal.
• Proficiency in Drupal architecture, themes, modules, templates, configuration, custom functionality and reusable components.
• Experience with website migrations and modernization of enterprise web platforms.
• Strong knowledge of HTML5, CSS3, JavaScript and modern JavaScript frameworks, preferably React and Next.js.
• Experience with relational databases and developing and integrating RESTful APIs and other web-platform integrations.
• Expertise in Elasticsearch, OpenSearch or similar enterprise search technologies including indexing, query configuration, ranking and relevance optimization.
• Experience with semantic search, AI-supported search or AI-enabled content-discovery functionality.
• Knowledge of Git, code review and CI/CD deployment workflows.
• Ability to apply security, accessibility, performance, responsive design and maintainability standards to web platforms.
• Experience troubleshooting complex web development, integration and deployment issues.
• Fluency in English is required.
• Desirable skills include experience with AI technologies evaluation and application, developing and maintaining complex multi-site digital platforms, documenting technical systems, communicating technical issues clearly, implementing multilingual websites and CMS-based translation workflows, and working independently and collaboratively in multicultural environments.

Apply on the employer's application page. The closing date for applications is Tuesday, 27 October 2026.