Job Summary: We are seeking a Senior Full Stack Developer to join a team building a comprehensive, modular ERP system focused on financial management, property management, marketing, sales, and supplier management—incorporating AI tools for analysis and user interaction. Key Highlights: 1. Participation in a high-impact product (core ERP of the business) 2. Collaborative team focused on engineering best practices 3. Opportunity to influence architecture, standards, and technical roadmap **Location:** Oeiras (hybrid model) **Contract:** Renewable for 6 months **Compensation:** up to €2500 + benefits / month (gross) **Experience Level:** Senior **Primary Tech Stack:** Node.js, React, JavaScript, APIs, Databases, AWS (or similar) **About the Project** We are looking for a **Full Stack Developer** to join a team developing a complete, modular ERP covering multiple domains, including: * Financial management * Property management * Marketing and sales * Supplier management * And other modules continuously evolving The ERP will feature multiple API-based integrations with existing platforms and incorporate AI tools for both analysis/reporting and user/customer interaction (e.g., assistants, automations, recommendations, intelligent chat/customer support). **Responsibilities:** * End-to-end development and evolution of ERP modules (backend + frontend) * Design and maintenance of APIs (REST and/or other approaches), integrations, and synchronizations with external systems * Database modeling and optimization (schemas, queries, performance, migrations) * Backend implementation in Node.js (architecture, security, validations, testing) * UI development in React (components, state management, performance, UX within product context) * Cloud environment operations (AWS or similar): deployment, scalability, observability * Quality assurance via testing, code reviews, product documentation, and engineering practices (CI/CD, monitoring, logging) * Collaboration with product/tech teams on technical discovery, architectural decisions, and iterative deliveries **Requirements:** * Solid full-stack development experience * Node.js and React used in production product contexts (not just prototypes) * JavaScript (ideally following coding best practices and standards) * Experience with APIs and system integrations (authentication, retries, rate limiting, idempotency, webhooks, etc.) * Experience with databases (MySQL or others) and data model design * Experience working with AWS (or equivalent infrastructure) and understanding of environments (dev/stage/prod) * Best practices: Git, team collaboration, quality focus, and delivery discipline **Nice-to-Have:** * Experience managing and implementing database systems on Linux * Docker, CI/CD (GitHub Actions/GitLab CI), Infrastructure as Code (Terraform/CloudFormation) * Modular architectures (well-structured monolith, microservices, event-driven, queues) * Observability (structured logs, metrics, tracing) * Experience developing and integrating AI tools, e.g.: + Integration with AI/LLM APIs + RAG (retrieval + generation), embeddings, semantic search + Automation of reporting and intelligent analytics + User-facing assistants (chat/voice), data classification and extraction **What We Offer** * Participation in a high-impact product (core ERP of the business, with multiple modules and integrations) * Collaborative team focused on engineering best practices * Opportunity to influence architecture, standards, and technical roadmap * Competitive compensation aligned with experience: up to €2500 + benefits / month (gross) * Flexibility: hybrid model (on-site and remote) **Application** Send your CV + a brief summary (5–10 lines) of your experience to **\**. Original job posting available at: https://www.itjobs.pt/oferta/510702/full-stack-developer-node-js-react-e-ia