Senior AI Full Stack Developer

Senior AI Full Stack Developer

Leadtech

Remote, Spain

About the role

We are building an innovative platform that leverages a suite of specialized AI agents to automate complex tasks. As a Senior Level Full-Stack Developer, you will be instrumental in building and scaling the Project’s platform. You will work across our entire technology stack to deliver a seamless and powerful user experience. You will be joining a project with a clear vision and a modern tech stack.

• Extensive knowledge of Python.
• Develop and maintain features on both our React frontend and Node.js (Express) backend.
• Build intuitive user interfaces using TypeScript, Vite, and our Shadcn UI component library, enabling users to upload media, manage their analyses, and interact with our AI agents.
• Design, implement, and maintain RESTful APIs with Express to manage user authentication, data processing, and orchestrate analysis workflows.
• Build AI Agents with LangGraph that can handle multi-step reasoning, Create workflows where AI agents collaborate or hand off tasks to other agents. Maintain conversation state and context across interactions and Handle complex decision trees and conditional logic.
• Model Context Protocol (MCP) Knowledge Agents with Claude: to Build AI agents access to real-time data, APIs, and tools Create AI assistants that can actually take actions, Combine the reasoning power of LLMs with real-world integration.
• Integrate our platform with various external services and APIs, and handle incoming webhooks for processing asynchronous tasks.
• Collaborate on the integration with our n8n-based workflow automation engine, helping to connect our backend with the AI agents that power our analyses.
• Collaborate closely with product managers and AI specialists to translate complex requirements into robust, scalable features.
• Contribute to database schema design and write migrations for our PostgreSQL & BigQuery databases.
• Knowledge of GCP to Collaborate with the team on application deployment and help maintain our cloud infrastructure on Google Cloud Platform.

Requirements

What We're Looking For:

We are seeking a proactive and skilled developer who is passionate about building modern, data-driven applications.

• Experience: 5+ years of professional experience in a Senior full-stack development role.
• Extensive experience with the Python framework.
• TypeScript Proficiency: You are highly proficient in TypeScript and its application in both frontend (React) and backend (Node.js) environments.
• Frontend Expertise: Strong experience with React and modern state management, including Hooks and the Context API.
• Backend Expertise: Solid experience building and consuming REST APIs with Node.js and Express.
• Database Skills: Experience with like PostgreSQL, and working with an ORM or query builder.
• Experience in BigQuery.
• Knowledge of LangGraph, LangChain.
• Problem-Solving Mindset: You are a collaborative problem-solver, eager to take on new challenges and contribute to a fast-paced development cycle.
• Passion for AI: A genuine passion and awareness for artificial intelligence and a strong desire to build products that leverage its capabilities to solve real-world problems.
• Creativity and Proactivity: You have a passion for building great products, are eager to propose new features, and enjoy finding creative solutions to improve the user experience.

Nice to Have:

• AI Project Experience: Previous experience working on projects involving AI, machine learning, or interacting with large language models (LLMs).
• Familiarity with UI component libraries like Shadcn UI.
• Knowledge of cloud platforms like Google Cloud Platform (GCP).