Senior Fullstack Developer (Node.js / TypeScript)

One of the companies we work with at Joppy, which specialises in developing cloud-based software solutions using Artificial Intelligence (AI) and the Internet of Things (IoT) , whose main focus is on helping businesses manage sustainability and regulatory compliance and operational efficiency , is looking for FULL STACK DEVELOPERS to join the team. Working arrangements: HYBRID in Madrid (3 days a week in the office). As a Senior Full-Stack Developer, you'll play a key role in shaping the future of Business Partner Transparency (BPT) within our company HUB. We provide Supplier intelligence that goes beyond helping businesses ensure compliance with ESG regulations. We enable companies to unify transparency, compliance, and efficiency across their value chain. Our HUB is a modern, enterprise-grade development platform that enables businesses to build powerful applications without worrying about infrastructure, scaling, or failover. You'll help develop and refine this cutting-edge, serverless ecosystem while delivering meaningful solutions for international clients. Your Responsibilities Design, build, and optimize full-stack features using modern back-end technologies, ensuring scalability and maintainability. You'll use Node.JS and TypeScript on the backend, and React.JS on the frontend. Develop and enhance innovative software solutions that automate complex compliance workflows for businesses of all sizes. Collaborate closely with product managers, designers, and engineers in small, agile squads (4-6 people) to define, refine, and implement features. Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and continuous integration/deployment (CI/CD) practices. Own the architecture and design of Typescript based solutions, optimizing for performance, reliability, and user experience. Contribute to technical strategy and decision-making, identifying opportunities for innovation and process improvements. Mentor and support junior...