ph3Overview /h3pWe are building a new startup inside Factorial, aiming to scale from 0 to 10 million in under a year. The new spinoff focuses on rethinking how companies manage workflows, org charts, policies, and analytics—core operational facets of Factorial’s platform. As a Founding Engineer, you will join at day zero, working closely with a small, high‑energy team that values speed, decision‑making with incomplete data, and building products people actually use. /ph3Key Responsibilities /h3ulliLead the design, development, and delivery of AI‑powered features for the IT Management domain, including onboarding, permissions, support, and equipment management. /liliOwn the full lifecycle of features—from hypothesis, to build, to deployment, measurement, and iteration. /liliConduct customer calls to understand pain points and translate them into product requirements. /liliReview and mentor code daily, providing constructive feedback to all team members, including juniors. /liliCollaborate with the product team to set quarterly goals and roadmap, focusing on technical readiness and alignment with business objectives. /liliAdvise teammates on transitioning from deterministic to probabilistic AI models, ensuring outputs can be reasoned about and acted upon. /liliEnsure scalable, cloud‑native integration of AI models with a Ruby on Rails backend and a React/TypeScript frontend. /liliGet involved in architectural decisions concerning agentic workflows and LLM trade‑offs. /liliParticipate in recruiting, interview, and mentoring processes to grow the engineering team. /li /ulh3Qualifications /h3ulli4+ years of software engineering experience, preferably with a track record of shipping AI features. /liliStrong experience in Ruby on Rails and React or TypeScript. /liliProficiency in building and maintaining scalable backend services, integrating AI models, and ensuring reliability. /liliHands‑on understanding of LLM architecture, agentic workflows,



and probabilistic systems. /liliAbility to explain complex technical concepts in clear English to non‑technical stakeholders. /liliEntrepreneurial mindset, comfortable building from scratch, shipping quickly, and learning from data. /liliCollaborative attitude, eager to mentor others and engage in peer reviews. /liliExperience or strong curiosity about onboarding, permissions, or IT operations is a plus. /li /ulh3Working Model /h3ulliOffice‑first model in Barcelona or Madrid: on‑site several days a week for collaboration and alignment. /liliRemote work is supported when it benefits focus, personal needs, or change of scenery. /liliFlexible schedule balances deep work with team interaction. /li /ulh3Hiring Process /h3ulliIntro Call – discussion with Talent Partner about your journey and goals. /liliHiring Manager Interview – deep dive into product mindset, teamwork, and problem‑solving. /liliLive Challenge – collaborative technical exercise based on real‑life problems. /liliFinal Coffee Chat – relaxed conversation with the CTO VP of Engineering to explore vision, culture, and growth. /liliAll stages are conducted remotely via video conferencing tools. /li /ulh3Benefits /h3ulliPrivate health insurance through Alan. /liliWellness program with Wellhub (gyms, pools, outdoor classes). /liliSubscription to language learning platforms. /liliBreakfast and organic fruit in the office. /liliFood discounts with Nora. /liliPet‑friendly workplace. /liliOpportunities for growth in a fast‑moving, multicultural environment. /li /ulpWe welcome applicants from all backgrounds and advocate equal opportunities. We are committed to workplace inclusion of people with disabilities; please indicate any accommodation needs during the application process. /ph3Company Commitment /h3pFactorial is a leading AI‑powered business management platform with over 15,000 customers, 1,500 employees worldwide, and a focus on transparency, career progression, and inclusive culture. /p /p #J-18808-Ljbffr

📌 Senior Product Engineer - Factorial IT (Barcelona)
🏢 Factorial Hr
📍 Barcelona