Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, and/or disabilities. All we need is your high energy, skills, and willingness to be a part of a great project!
Senior Full Stack AI Native Developer
Location
Spain
Posted
7 days ago
Salary
0
Seniority
Senior
Job Description
Senior Full Stack AI Native Developer
leadtech
Role Description As part of the Development team as a Full-Stack Developer, you will be instrumental in building and scaling our platforms and products. You will work across our entire A.I technology stack to deliver a seamless and powerful user experience. You will be joining projects with a shipping fast approach and a modern tech stack. - Extensive knowledge of Javascript/Typescript. - Design, implement, and maintain RESTful APIs with NextJS/Express to manage user authentication, data processing, and orchestrate analysis workflows. - Model Context Protocol (MCP) Knowledge Agents with Claude SDK: - Build AI agents access to real-time data, APIs, and tools. - Create AI Agents that can actually take actions. - Combine the reasoning power of LLMs with real-world integration. - Build AI Agents with LangGraph + LangFuse 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. - Handle complex decision trees and conditional logic. - Develop and maintain features on both our React frontend and Node.js (NextJS) backend. - Build intuitive user interfaces using TypeScript, Vite, React and our UI component library, enabling users to upload media, manage their analyses, and interact with our web delivered product. - Integrate our platform with various external services like Payment Service Providers and APIs, and handle incoming webhooks for processing asynchronous tasks. - Collaborate closely with AI product managers and AI specialists to translate complex requirements into robust, scalable features expressed in AI design prompts. - 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. Qualifications - Extensive experience with the Python framework. - Deep API Integration experience with 3rd Party vendors. - A serious self-learner and someone that adapts to new tools and platforms very quickly. - TypeScript Proficiency: 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 NextJS or Express. - Database Skills: Experience with PostgreSQL, and working with an ORM or query builder. - Knowledge of LangGraph, LangChain, LangFuse. - Problem-Solving Mindset: Collaborative problem-solver, eager to take on new challenges. - Passion for AI: Genuine passion and awareness for artificial intelligence. - Very High Agency: Work with autonomy with a large degree of freedom to implement the business vision. - Creativity and Proactivity: Passion for building great products and proposing new features. Requirements - AI Project Experience: Previous experience working on projects involving AI, machine learning, or interacting with large language models (LLMs). - Familiarity with UI component libraries. - Knowledge of cloud platforms like Google Cloud Platform (GCP). Benefits - High-Impact Role: Be a key player in a small, agile team building a greenfield project. - Modern Technology: Work with a cutting-edge tech stack with a focus on best practices. - Growth & Learning: Gain deep experience in AI-driven applications, cloud-native architecture, and real-time systems. - Stability & Vision: Enjoy the energy of a startup environment backed by a large, successful company. - Collaborative Culture: Value open communication, teamwork, and a shared passion for building exceptional products. - Growth and career development: Flexible career path with personalized internal training and an annual budget for external learning opportunities. - Work-Life balance: Flexible schedule with flextime and the option of working fully remote or from our Barcelona office. - Comprehensive benefits: Competitive salary, full-time permanent contract, and top-tier private health insurance. - 25 days of vacation plus your birthday off, with flexible vacation options. - Unique Perks: Office in Barcelona with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace.
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