As a Senior Full-Stack Developer at InteractiveAI, you will build core features across both the frontend and backend of our platform—shipping elegant interfaces, robust APIs, scalable services, and reliable tooling used by enterprise customers and internal teams. This is a hands-on, high-ownership engineering role: you will architect systems, write production-grade code, design efficient data flows, and ship end-to-end features that directly shape our product experience. Design, architect, and implement backend services, microservices, and internal tooling Build modern, responsive, and performant frontend applications using React, TypeScript, and Tailwind Develop and maintain RESTful and GraphQL APIs that power key platform functionalities Integrate third-party services, authentication systems, and enterprise connectors Collaborate with product and design to craft intuitive user experiences and smooth interaction flows Deploy and manage containerized applications using Docker and Kubernetes Work with databases such as Postgres, Redis, and/or ClickHouse—handling schema design, migrations, and query performance Implement and maintain CI/CD pipelines, testing frameworks, and release workflows Troubleshoot production issues, performance problems, and service reliability incidents Take full ownership of features from design to production, including documentation and monitoring We’re looking for a highly skilled engineer with strong full-stack fundamentals, proven delivery, and the ability to build elegant, scalable systems across the entire web stack. Minimum Requirements: 5+ years experience building and deploying full-stack applications in production Strong proficiency with TypeScript, JavaScript, and modern frontend frameworks (React required) Backend experience with Node.js, Python, or similar server-side technologies Experience designing and consuming RESTful and GraphQL APIs Hands-on experience with Docker, containers, and Kubernetes deployments Strong understanding of relational and/or analytical databases (Postgres, Redis, ClickHouse) Experience working with cloud providers (AWS, GCP, or Azure) Familiarity with Infrastructure as Code tools such as Terraform Solid grasp of CI/CD pipelines, automated testing, and release management Excellent communication skills and ability to collaborate in cross-functional teams Nice-to-Haves: Experience with multi-tenant SaaS architectures or high-throughput systems Experience with state management libraries (Zustand, Redux, Recoil) Familiarity with event-driven architectures and message queues Exposure to enterprise security best practices (IAM, VPC, encryption) Contributions to open-source or active involvement in tech communities Competitive base salary (€70,000/yr to €90,000/yr) + performance bonuses Access to equity/share plan as it rolls out Private health insurance Flexible work setup + travel when needed (ideally Hybrid in Lisbon or Madrid) 23 days PTO (excluding local public holidays)