AI Senior Fullstack Engineer

Role: AI Senior Fullstack Engineer (Applied AI)

Join Contentsquare to develop AI-powered product initiatives leveraging Large Language Models (LLMs). This is a software engineering role focused on product development and early product iteration—moving quickly from idea to proof of concept and toward real customer value.

What you’ll do

• Build and ship AI-enabled features (LLM-based) within product surfaces (e.g., extending an AI CoPilot experience to additional areas)
• Participate in early product iteration, including validating product hypotheses via user interviews
• Rapidly prototype and iterate to help users answer data-related questions through LLM-driven experiences
• Contribute to foundational AI product capabilities while keeping an eye on performance and reliability of LLM-based applications
• Work within a distributed team across the US and Europe

Requirements

• Minimum 5+ years of software engineering experience, with strong background in TypeScript
• Extensive experience building fullstack web applications
• Experience with TypeScript and modern front-end frameworks (e.g., React, Vue) and Node.js
• Motivation to build AI features in a fast-paced environment with the customer “in the loop”
• Understanding of LLM strengths/limitations and how to navigate them in real product workflows

Nice to have

• Experience evaluating performance of LLM-based applications (strong opinions, weakly held)
• Experience taking an LLM-based application from inception through market launch
• Ability to iterate/prototype rapidly for data-related use cases using LLMs (and other ML when appropriate)
• Familiarity with multiple LLM providers and their tradeoffs

Location & work model

• Remote within France, Spain, Italy, Poland, or Germany
• Can also be hybrid/office-based in Barcelona, Paris, Milan, Munich, or Cairo