European Union, LATAM Work type: Office/Remote Technical Level: Leader Job Category: Software Development Project: Leading platform for electronic agreements We are looking for a talented

Senior Full-Stack Engineer

to join a team building a modern, large-scale platform that powers intelligent agreement management experiences for millions of users worldwide. Our platform is at the heart of a global SaaS product used by more than 1.7 million organizations across 180+ countries. The team develops a unified, widget-based front-end architecture that enables seamless experiences across document creation, sending, signing, and management. By combining scalable engineering practices with AI-powered workflows, we are transforming the way businesses manage their most important agreements. As a Senior Engineer, you will play a key role in designing and developing high-performance, reusable frontend solutions while contributing to backend services and platform capabilities. You will work on complex engineering challenges involving micro-frontends, scalability, reliability, security, and developer productivity. Responsibilities: Design and build scalable, reusable UI components and frontend solutions using React and TypeScript. Develop and maintain backend services using Node.js and Express. Contribute to a modern micro-frontend architecture and shared platform capabilities. Collaborate with cross-functional teams to deliver high-quality features in a fast-paced SaaS environment. Write well-tested,



maintainable code and contribute to a strong engineering culture. Improve performance, reliability, observability, and security across the platform. Participate in the entire software development lifecycle, including architecture discussions, implementation, testing, CI/CD, and production releases. Requirements: 8+ years of professional software development experience. Strong expertise with TypeScript and React. Hands-on experience with Node.js, Express, and modern backend development. Experience building reusable frontend components, design systems, or shared libraries. Solid understanding of frontend testing practices and tools. Experience working on large-scale SaaS products. Knowledge of REST APIs and modern web architecture. Excellent communication skills and ability to collaborate effectively in distributed teams. Nice to Have: Experience with Next.js. Hands-on experience with micro-frontend architecture. Experience with gRPC and API integrations. Knowledge of JSON Schema or XML Schema. Experience with CI/CD pipelines and Azure DevOps. Familiarity with Agile and Test-Driven Development practices. We offer*: Flexible working format - remote, office-based or versátil A competitive salary and good compensation package Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Project: Global biopharmaceutical company

#J-18808-Ljbffr

📌 Lead Fullstack Engineer (React+Next.js) (#5392)
🏢 N-iX
📍 Madrid