AI Senior Fullstack Engineer

Contentsquare is the all‑in‑one experience intelligence platform designed to be easily used by anyone who cares about digital journeys. With our flexible and scalable platform, organizations quickly get a deep understanding of their customers’ whole online journey. We are a global leader in the experience analytics space, with a growing presence across 15 offices worldwide. We’re here to stay—and we’re looking for team members who are excited to drive impact and help us scale even further. Our aim is to create an inclusive workplace where everyone learns and succeeds. Contentsquare has built a community of individuals who are daring, understanding, and deliberate. We invite you to join us in making the complex simpler—for our customers, their customers, and each other. Important note: Be careful of scammers pretending to be from Contentsquare. We will never ask for money or contact you through random texts. For more information, visit our careers blog. Important Information This is a software engineering role; requires minimum 8 years of software engineering experience with a particular background in TypeScript. While we are building software on top of LLMs, this is not a machine learning role. This role is remote (France, Spain, Italy or Germany only) but can also be office‑based (hybrid) in Barcelona, Paris, Milan or Munich. We’re looking for a Senior Fullstack Engineer (Applied AI) to join one of several exciting product initiatives that leverage the latest in AI, particularly using Large Language Models (LLMs). One example project is extending our AI CoPilot product to more surfaces, allowing users without expertise in product or digital experience analytics to answer their questions simply by asking them. We are moving rapidly to leverage LLMs to reduce time to insight, make setup easier, and much more. As our next Senior Software Engineer (Applied AI), you will be focused on product development, with a side of early product iteration. For example, we expect engineers to participate in user interviews as we validate product hypotheses. This is an exciting opportunity to work in a “startup within the startup.” We move quickly from idea to proof of concept to interview to product, ensuring that what we build provides actual value to our customers. As LLMs and related technologies grow and change rapidly, we are enthusiastic about new ideas and libraries but discerning – what we build is foundational. We're a distributed team that operates across the US and Europe. We're open to hiring the right person anywhere within the US East Coast time zone or Europe. What we’re looking for Desire to work in a fast‑paced development environment where the customer is in the loop. We prefer to fail fast and start over than to learn too late that we’ve built the wrong thing. Extensive full‑stack web application development experience (8+ years), preferably in a data‑related industry. Strong opinions, weakly held about how to evaluate the performance of an LLM‑based application. Experience bringing an application built on top of LLMs from inception to market. Ability to iterate/prototype rapidly to answer data‑related questions using LLMs (and other ML when appropriate). Awareness of what LLMs are good at, what they’re not good at, and how to navigate this. Familiarity with various LLM providers and their relative tradeoffs. Familiarity with a variety of LLM models and their relative tradeoffs. Our product tech stack is primarily Typescript, with a variety of front‑end frameworks (React, Vue, Node…) Why you should join Contentsquare We invest in our people through career development, mentorship, social events, philanthropic activities, and competitive benefits. We are always assessing the perks we offer to ensure we’re aligned with the employees' needs. Virtual onboarding, Hackathon, and various opportunities to interact with your team and global colleagues both on and offsite each year. Work flexibility: hybrid and remote work policies. Generous paid time‑off policy (every location is different). Immediate eligibility for birthing and non‑birthing parental leave. Wellbeing and Home Office allowances. A Culture Crew in every country we’re based in to coordinate regular activities for employees to get to know each other and bond outside of work. Every full‑time employee receives stock options, allowing them to share in the company’s success. We have multiple Employee Resource Groups, that offer a safe space for individuals who share common identities, life experiences, or allyship to connect, support one another, and passionately advocate for the issues close to their hearts. And more benefits tailored to each country. Contentsquare is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to sex, gender identity or expression, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age, or any other characteristic protected by law. Your personal data is used by Contentsquare for recruitment purposes only. Read our Job Candidate Privacy Notice to find out more about data protection at Contentsquare and your rights. You can exercise your rights by using our dedicated Data Subject Rights Portal here. Your personal data will be securely stored in our hosting provider’s data center in Oregon (US west). We have implemented appropriate