Staff AI Engineer - API & Integrations Team (A Coruña)

Factorial; Oleiros; Presencial; EUR 90.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Private health insurance (Alan)

Wellhub health & fitness

Cobee expenses

Language classes

Breakfast and organic fruit

Nora food discounts

Pet friendly workplace

Descripción de la vacante

Factorial is seeking an engineering lead to own the public API and integrations framework, collaborating with Product and Design to deliver scalable APIs and AI-enabled features. You will mentor peers, drive production-grade code, and help define the AI strategy tied to the YepCode acquisition.

The role emphasizes end-to-end ownership, speed, and adaptability across a multi-team environment, with on-site collaboration and a strong design-system focus.

Formación

• Development maturity: produce solid, well-tested, production-grade code and own systems end-to-end.
• Proven impact: demonstrated projects or contributions that produced measurable results.
• Product-first thinking: design end-to-end experiences, not isolated components.
• Speed and adaptability: experiment, learn, and iterate quickly.
• Abstraction mindset: experience with legacy/monolithic systems and reusable frameworks.
• Optional bonus: experience with LLMs, skill-based agents, or AI protocols.

Responsabilidades

• Own end-to-end development of the public API and integrations framework, from problem definition and system design to shipping, monitoring, and iteration in production.
• Collaborate closely with Product and Design to shape APIs and frameworks that meet real user needs.
• Ensure consistent user and integration experience across verticals, aligned with Factorial’s design system.
• Participate in customer calls, reviews, and feedback sessions to understand workflows and pain points.
• Mentor peers, document learnings, and contribute to engineering best practices.
• Define and drive AI initiatives related to the YepCode acquisition, including skill-based agents, evaluation frameworks, RAG, and agentic workflows.

Conocimientos

API development

System design

Mentoring

Product-focused thinking

Adaptability

Herramientas

LLMs

APIs

Cloud platforms

Descripción del empleo

About the Role

Help build the platform that connects Factorial to the broader software ecosystem, establishing a strong engineering foundation today and integrating AI into future workflows.

The Team

The Engineering team, consisting of 200+ Product Engineers, builds a Business Management solution. The API & Integrations team operates between product and platform, managing the public API, integration framework, and developer experience.

Responsibilities

• Own end‑to‑end development of the public API and integrations framework, from problem definition and system design to shipping, monitoring, and iteration in production.
• Collaborate closely with Product and Design to shape APIs and frameworks that meet real user needs.
• Ensure consistent user and integration experience across verticals, aligned with Factorial’s design system.
• Participate in customer calls, reviews, and feedback sessions to understand workflows and pain points.
• Mentor peers, document learnings, and contribute to engineering best practices.
• Define and drive AI initiatives related to the YepCode acquisition, including skill‑based agents, evaluation frameworks, RAG, and agentic workflows.

Qualifications

• Development maturity: produce solid, well‑tested, production‑grade code and own systems end‑to‑end.
• Proven impact: demonstrated projects or contributions that produced measurable results.
• Product‑first thinking: design end‑to‑end experiences, not isolated components.
• Speed and adaptability: experiment, learn, and iterate quickly.
• Abstraction mindset: experience working with legacy/monolithic systems and building reusable frameworks for multiple teams.
• Optional bonus: experience with LLMs, skill‑based agents, or AI protocols.

Technical Foundation (Preferred)

• Strong software engineering fundamentals in any language, backend, frontend, or both.
• Shipping real products to production.
• Knowledge of APIs, cloud platforms, and system design.
• Fast learning of new tools and technologies.
• Experience with legacy/monolithic systems and evolving internal frameworks.

How We Work

• Office‑first with flexible schedule; on‑site several days a week for collaboration, with remote work supported when appropriate.
• Career path framework that defines expectations, tracks growth, and includes salary information.

Benefits

• High‑growth, multicultural environment.
• Private health insurance (Alan).
• Wellhub for health and fitness (gyms, pools, outdoor classes).
• Expense savings through Cobee.
• Language classes.
• Breakfast and organic fruit in the office.
• Food discounts with Nora.
• Pet friendly workplace.

EEO Statement

Factorial welcomes applicants from all backgrounds and is committed to equal opportunities, actively promoting workplace inclusion for people with disabilities.