We're looking for a Junior Product Engineer to support the development of AI-powered features for HAVAS data products. You'll work alongside senior engineers and product teams to build, test, and deploy backend services and API integrations. This is a hands-on role where you'll learn to build scalable applications, integrate AI and advertising APIs, and contribute to production features for Converged Activate and Match.AI.

Main Responsibilities

Product Engineering Support

• Support the development of AI-driven features by implementing technical requirements under guidance
• Build and maintain Python-based applications and APIs using FastAPI or Flask
• Collaborate with senior engineers and product teams to understand and implement user-facing features

AI & API Integration

• Assist with integrating LLM APIs (Gemini, GPT) for use cases like audience insights and content generation
• Help connect external advertising APIs (Meta, Google Ads, TikTok, Amazon Ads)
• Learn and apply prompt engineering techniques to improve AI outputs

Cloud Deployment & DevOps





• Deploy services to cloud environments (Google Cloud Run) with support from senior team members
• Participate in CI/CD processes and learn deployment best practices
• Monitor application performance and troubleshoot issues

Learning & Collaboration

• Work closely with cross-functional teams including product managers, designers, and data scientists
• Participate in code reviews and learn from senior engineers
• Document your work and communicate progress effectively

Education

• Bachelor's degree in Computer Science, Data Science, Engineering, or related field (or equivalent practical experience)

Previous Experience

• 0-1 years of professional experience or strong internship/project portfolio

Language Skills

• Good working knowledge in English

Key Competencies

• Basic Python programming skills (familiarity with frameworks like FastAPI or Flask is a plus)
• Understanding of APIs and how to work with them

📌 Junior Product Engineer (Madrid)
🏢 Havas Media Network España
📍 Madrid