Ai Software Developer - Founding Role - Factorial Hr

Factorial Hr; Barcelona; Presencial; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Cobee for expenses

Language classes

Breakfast in the office and organic果

Pet-friendly office

Own large initiatives and quarterly ro

Participate in customer calls to

Descripción de la vacante

Factorial HR is seeking a founding engineer to shape a new AI-centric spinoff. You will own major initiatives, define quarterly roadmaps, and collaborate with cross-functional teams to ship usable AI features in a cloud-native stack. You’ll lead design discussions, mentor others, and contribute to performance and architecture decisions.

The role combines fast execution with thoughtful, scalable design, in an environment that values impact and continuous learning.

Formación

• 4+ years of software engineering experience.
• Experience shipping AI-powered features.
• Proficiency with Ruby on Rails backend and React frontend.
• Entrepreneurial mindset and experience building from scratch.
• Ability to translate probabilistic AI outputs into actionable guidance.
• Ability to explain complex technical decisions to non-technical audiences.

Responsabilidades

• Own large initiatives and quarterly roadmaps.
• Collaborate to build AI-integrated features in Ruby on Rails + React/TypeScript.
• Mentor junior engineers and share knowledge.
• Review code daily and provide feedback across the team.
• Participate in customer calls to understand pains and needs.

Conocimientos

4+ years exp

AI features shipping

Ruby on Rails

React

TypeScript

Descripción del empleo

Founding engineer role shaping a new Factorial spinoff focused on making AI central to workflow management. You’ll own big initiatives, define quarterly roadmaps, and work closely with cross-functional teams to ship usable AI features. The role blends fast execution with thoughtful, reliable design in a cloud-native stack. You’ll join a scrappy, highly capable team that values impact, mentorship, and continuous learning.

• Cobee for expenses
• Language classes
• Breakfast in the office and organic fruit
• Pet-friendly office
• Own large initiatives and quarterly roadmaps
• Participate in customer calls to understand pains and needs
• Review code daily and provide feedback across the team
• Mentor junior engineers and share knowledge
• Learn from and contribute to performance and architecture discussions
• Collaborate to build AI-integrated features in Ruby on Rails + React/TypeScript
• 4+ years in software engineering
• Experience shipping AI-powered features
• Proficiency with Ruby on Rails backend and React frontend
• Ability to explain complex technical decisions to non-technical audiences
• Entrepreneurial mindset and experience building from scratch
• Comfort with probabilistic systems and integrating AI models into scalable environments
• Ability to translate non-deterministic outputs into actionable guidance
• Ability to explain technical concepts clearly
• Problem-solving under uncertainty
• Ruby on Rails
• React
• TypeScript

AI Software Developer - Founding role - Factorial HR barcelona, catalunya, es