OverviewWe 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.Key Responsibilities- Lead the design, development, and delivery of AI‑powered features for the IT Management domain, including onboarding, permissions, support, and equipment management.- Own the full lifecycle of features—from hypothesis, to build, to deployment, measurement, and iteration.- Conduct customer calls to understand pain points and translate them into product requirements.- Review and mentor code daily, providing constructive feedback to all team members, including juniors.- Collaborate with the product team to set quarterly goals and roadmap, focusing on technical readiness and alignment with business objectives.- Advise teammates on transitioning from deterministic to probabilistic AI models, ensuring outputs can be reasoned about and acted upon.- Ensure scalable, cloud‑native integration of AI models with a Ruby on Rails backend and a React/TypeScript frontend.- Get involved in architectural decisions concerning agentic workflows and LLM trade‑offs.- Participate in recruiting, interview, and mentoring processes to grow the engineering team.Qualifications- 4+ years of software engineering experience, preferably with a track record of shipping AI features.- Strong experience in Ruby on Rails and React or TypeScript.- Proficiency in building and maintaining scalable backend services, integrating AI models, and ensuring reliability.- Hands‑on understanding of LLM architecture,



agentic workflows, and probabilistic systems.- Ability to explain complex technical concepts in clear English to non‑technical stakeholders.- Entrepreneurial mindset, comfortable building from scratch, shipping quickly, and learning from data.- Collaborative attitude, eager to mentor others and engage in peer reviews.- Experience or strong curiosity about onboarding, permissions, or IT operations is a plus.Working Model- Office‑first model in Barcelona or Madrid: on‑site several days a week for collaboration and alignment.- Remote work is supported when it benefits focus, personal needs, or change of scenery.- Adaptable schedule balances deep work with team interaction.Hiring Process- Intro Call – discussion with Talent Partner about your journey and goals.- Hiring Manager Interview – deep dive into product mindset, teamwork, and problem‑solving.- Live Challenge – collaborative technical exercise based on real‑life problems.- Final Coffee Chat – relaxed conversation with the CTO & VP of Engineering to explore vision, culture, and growth.- All stages are conducted remotely via video conferencing tools.Benefits- Private health insurance through Alan.- Wellness program with Wellhub (gyms, pools, outdoor classes).- Subscription to language learning platforms.- Breakfast and organic fruit in the office.- Food discounts with Nora.- Pet‑friendly workplace.- Opportunities for growth in a fast‑moving, multicultural environment.We 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.Company CommitmentFactorial 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.#J-18808-Ljbffr

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