Productsup is a Berlin-based company with a strong international customer base, and we’re looking to rapidly scale our reach within the digital commerce landscape. We are seeking a high-performing Full-Stack CMS Developer to join our dynamic Marketing team. In this pivotal role, you will own our website strategy end-to-end, ensuring our site is continuously optimized for conversion and driving performance from foundational back-end architecture to high-impact front-end user experiences.

Key Responsibilities
Technical Engineering & Architecture

* Back-End (Headless CMS): Design, scale, and maintain Contentful content models, fields, spaces, and environments. Oversee structured content delivery using GraphQL/REST API queries, webhooks, and modern data-handling protocols.
* Front-End (Presentation Layer): Build and maintain responsive, accessible, secure, and performant web experiences using modern JavaScript frameworks (Nuxt.js, Vue.js, Node.js) alongside semantic HTML5 and advanced CSS3.
* Integrations & DevOps: Connect Contentful seamlessly with critical third-party tools,



including CRM platforms (HubSpot), web analytics solutions, and cloud infrastructure/hosting environments (AWS, Amazon CloudFront, S3, Heroku).
* AI & Workflow Automation: Enhance, scale, and maintain internal AI-powered automation tools, leveraging platforms such as OpenAI to streamline recurring web workflows, reduce manual operational overhead, and boost overall team efficiency.

Analytics, Tracking & Conversion Rate Optimization (CRO)

* Performance Monitoring: Evaluate end-to-end site health, user engagement, and marketing funnel performance using GA4, Hotjar, and advanced data visualization tools.
* CRO Pipeline Ownership: Own the testing pipeline by designing (with copy and design support) and executing rigorous A/B and multivariate tests across copy, interactive layouts, and visual CTAs to maximize lead conversion rates.
* Funnel Optimization: Proactively monitor critical site metrics—in

📌 Full-Stack CMS Developer (Barcelona)
🏢 Productsup
📍 Barcelona