Job Summary: We are seeking a Senior Full Stack Developer to join an innovative team building AI-powered digital products and closely collaborating on architectural design. Key Highlights: 1. Leadership in Frontend development (React, NextJS) for AI 2. Expertise in Backend (Node.js, Python FastAPI) and microservices 3. Active participation in architectural design and product evolution We are knowmad mood! We are a leading digital transformation company, continuously evolving and at the forefront of technology. We were founded to drive real change through innovation and sustainable development, with a mission to deliver value to our clients and empower our talent. Comprising over 3,000 creative, digital, and innovative professionals united by purpose and capable of forging connections with people worldwide. A responsible, flexible team with high adaptability to our clients’ and the market’s needs—consistently delivering value, vision, creativity, expertise, professionalism, and passion for technology in every project. Our core values guiding us toward excellence are collaboration, innovation, commitment, fun, and trust. **What do we value?** Experience as a **Senior Full Stack Developer** in digital product environments and AI-driven initiatives: * Strong frontend development experience with **React and NextJS**, especially in building interfaces for chatbots, agents, and AI-based products. * Backend development experience with **Node.js and Python (FastAPI)** for building microservices, authentication, and data processing. * Experience with microservice architectures and deployment on **Kubernetes**. * Experience working with messaging and caching systems such as **Redis or Valkey**. * Experience with **PostgreSQL** databases and vector databases such as **Qdrant**. * Experience integrating and consuming **Azure AI services** (Form Recognizer, Document Intelligence, metadata services, and agents). * Experience with product-oriented AI frameworks such as **Vercel AI and LangGraph**. * Knowledge and experience in **observability** using **Grafana, Prometheus, and Loki**. * Experience in hybrid cloud environments leveraging **AWS** (SQS, S3, etc.) and **Azure** (especially for LLM usage). * Ability to work collaboratively within teams and closely with technical leads and cross-functional teams. **What would your responsibilities be?** * Develop the frontend layer using **React and NextJS** to build user interfaces for chatbots, intelligent agents, and AI-based products. * Design and develop backend services using **Node.js and Python (FastAPI)** for microservices, authentication, process orchestration, and data processing. * Design, deploy, and maintain application infrastructure on **Kubernetes**. * Integrate and operate **Azure AI services** (language models, Document Intelligence, agents, metadata services, and automations). * Implement solutions based on **AI frameworks**, such as Vercel AI and LangGraph. * Design and integrate messaging, caching, and persistence solutions using **Redis/Valkey, PostgreSQL, and Qdrant**. * Implement and maintain platform **observability** using Grafana, Prometheus, and Loki. * Integrate cloud services from **AWS (SQS, S3, etc.)** and **Azure** focused on LLMs. * Collaborate with technical leads on architectural design and technical decision-making. * Actively participate in code reviews, definition of best practices, and product evolution. **Additionally, we highly value experience and/or knowledge in:** * Prior experience developing **generative AI products** and intelligent agents. * Experience with event-driven architectures and distributed systems. * Experience designing scalable and secure APIs. * Knowledge of security in cloud and Kubernetes environments. * Experience in high-availability environments and end-user–focused products. And with us you can enjoy: Full-time schedule of 8 hours per day (no compressed workweek) Flexible start time between **7:00 and 10:00**, plus **1 hour for lunch** Additional vacation days as compensation Hybrid work mode: **minimum 3 days per week onsite in Madrid (Sanchinarro area)** At ***knowmad mood***, we are committed to equal opportunity and respect for diversity. We apply our Equality Plan and the principle of non-discrimination across all our recruitment processes.