About the Role
As a Backend Software Engineer (IC3), you will help create the backend layer that supports agentic and conversational experiences for Spendesk end users.
Your Scope Will Include Services That
- manage conversations and contextual state
- support the ingestion and retrieval of rich content such as PDFs and images
- integrate LLMs through AWS Bedrock with robust operational patterns
- connect to MCP-compatible services and tools exposed by other squads
- orchestrate multi‑step workflows combining reasoning, tool usage, and product actions

This is not just about integrating services’ features to an LLM. You will build production‑grade services that need to be reliable, observable, secure, and designed for long‑term extensibility. You will contribute to reusable patterns and collaborate with ML Engineers, Product Managers, Designers, and applicative squads to make these foundations useful across multiple AI use cases.
Our tech environment
- 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

Key responsibilities
Backend services for AI‑native experiences
- Design, build, and operate backend services and APIs that power conversational and agentic AI features.
- Implement the services needed for context management, tool invocation, rich content access, and multi‑step orchestration.
- Build robust patterns for integrating LLMs through AWS Bedrock, including retries, fallbacks, tracing, and cost‑aware usage.
- Ensure these services are designed for production from day one, with strong standards on reliability, maintainability, and security.

Architecture & transversal system design
- Partner with the IC5 Staff Engineer to implement the archi

📌 Software Engineer AI (España)
🏢 Spendesk
📍 España