Build AI-powered product capabilities that automate, predict, and simplify user workflows Spendesk is looking for a Backend Software Engineer (IC3) to join our AI & Data Products squad and help build the next generation of product features powered by AI, ML, and intelligent automation.
This is a hands-on backend role focused on turning predictive models, LLM capabilities, and business intelligence into real product experiences. You will work on backend services, APIs and MCPs that bring automation, prediction, and assisted decision-making into Spendesk’s user journeys, helping reduce manual work and make our product more proactive and intelligent.
You will collaborate closely with the 3 ML Engineers in the squad, as well as Product Managers, Designers, and applicative squads across Spendesk. Together, you will build production-grade services that expose ML-driven and LLM-driven capabilities in ways that are reliable, observable, and valuable for end users.
About The Role
As a Backend Software Engineer (IC3) in the AI & Data Products squad, you will design, build,



and operate backend services that power AI-native and ML-native product features.
Your mission is to help Spendesk move from isolated intelligence components to real, user-facing product capabilities. In practice, this means partnering with ML Engineers to productionize predictive logic, expose it through clean APIs and services, and integrate it into workflows that automate tasks, simplify decision-making, or anticipate user needs.
You May Work On Features Such As:

automated categorization and enrichment of spend-related workflows,
predictive assistance in finance or accounting journeys,
intelligent recommendations based on historical behavior or contextual signals,
LLM-powered experiences that simplify user actions and reduce friction,
backend services that make AI capabilities reusable across multiple product flows.

Backend services for AI and ML-powered product features

Design, build, and operate bac

📌 Backend Software Engineer (Barcelona)
🏢 Spendesk
📍 Barcelona