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.
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.
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.




backend services that make AI capabilities reusable across multiple product flows
This role requires both strong backend engineering and genuine interest in AI‐powered product design. TypeScript
Node.js for backend and banking applications
React on the frontend
PostgreSQL for data storage; Redis, SQS, and Kafka for jobs, queues, and event streaming
Terraform to define infrastructure as code
Kubernetes, Lambdas, and Step Functions to run our applications
AWS as our cloud provider, including AWS Bedrock for LLM access
GitHub Actions for CI
You do not need to be an ML engineer, but you must be comfortable integrating predictive or generative capabilities into backend systems and user‐facing product workflows.
Backend services for AI and ML‐powered product features
Design, build, and operate backend services and APIs that power AI‐driven, ML‐driven, or automation‐heavy product capabilities.
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📌 Backend Software Engineer (Cataluña)
🏢 Spendesk
📍 Cataluña