Company description With a unique work philosophy, The Power of One puts clients at the center by promoting the growth of their business through creative agencies (Publicis, Leo Burnett, Publicis Health), media (Zenith, Starcom, Spark and Performics), and areas of transversal knowledge.

Publicis

Groupe links Creativity, Technology and Data offering a value proposition that effectively connects brand and consumer. edge data platforms, artificial intelligence, and cloud?We are looking for a Senior Software Engineer to join our AI Platforms team, contributing to the design and development of next?generation products powered by Generative AI, autonomous agents, cloud technologies, and large?scale data platforms. on software engineering with technical leadership, mentoring junior developers and helping define the evolution of our architecture and engineering practices. Design, develop, and maintain modern full?stack applications using TypeScript, React, Next.js, and Python. Build AI?powered products leveraging LLMs, agent frameworks, MCP servers, and cloud?Design and implement scalable APIs, backend services, and integrations with internal and external platforms.

Work with data platforms including BigQuery, PostgreSQL, Redis, vector databases, and other analytical technologies. Lead code reviews and establish engineering best practices across the team. Mentor and support junior developers, contributing to their technical growth and day?to?day guidance.

Collaborate with architects, data engineers, AI specialists, product owners, and business stakeholders. Contribute to CI/CD pipelines, cloud infrastructure, observability, security, and platform reliability. Drive software quality through automated testing, monitoring, and continuous improvement initiatives. 6+ years of experience in software engineering.

Strong experience with TypeScript and modern backend or full?stack development.

Experience building applications with React and modern front?end frameworks such as Next.js. Professional experience developing backend services using Python,



Node.js, or similar technologies. Strong understanding of software architecture, distributed systems, scalability, and performance optimization.

Experience working with relational databases such as PostgreSQL and analytical platforms such as BigQuery.

Experience mentoring developers and providing technical leadership within engineering teams. Solid understanding of Clean Code, SOLID principles, testing strategies, and software engineering best practices. B2 English level or higher.

Experience with vector databases, RAG architectures, and semantic search solutions.

Experience with Google Cloud Platform (GCP), including Cloud Run, BigQuery, Cloud Functions, Pub/Sub, Firestore, or Vertex AI.

Experience with FastAPI, Express.js, serverless architectures, and microservices.

Experience with Redis, Celery, asynchronous processing, and distributed workloads. Understanding of data governance, privacy, and AI security best practices.

Experience in media, marketing, advertising technology, or data?driven digital products. Enjoy more than just work with adaptable compensation including meal vouchers, health insurance, transportation, and more. You can advance in your career not only through the experience of working with major clients but also by accessing local and global training programs specialized according to your role, covering both technical and soft skills.

Free Online Training: Telecommute up to 6 weeks from over 100 countries with our #WorkYourWorld program. Attractive holidays package s status in any group or class protected by law. All employees are committed to complying with obligations regarding Information Security and Technologies, obligations related to the use of Artificial Intelligence, obligations stemming from the Quality and Environmental Management System, as well as obligations derived from the Integrity Management System, Corruption Prevention, and the Anti-Bribery and Anti-Corruption Policy.

Furthermore, all employees are required to complete mandatory training courses, declarations, and compliance commitments in these areas. #

📌 Senior Software Engineer (Ai Platforms & Agentic Systems) (Madrid)
🏢 Publicis Groupe
📍 Madrid