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.
support the ingestion and retrieval of rich content such as PDFs and images
integrate LLMs through AWS Bedrock with robust operational patterns
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.
Hands‐on delivery of complex systems Own complex backend components end‐to‐end, from design and implementation to deployment and maintenance.
Review code, challenge design decisions, and raise the quality bar on backend engineering within the squad.
Bring pragmatism to delivery, balancing speed of experimentation with long‐term platform quality.
Observability, performance & operational excellence Instrument services with logs, tracing, and metrics to ensure strong production visibility and fast iteration.
Help define and uphold quality standards around latency, failure handling, cost efficiency, and resilience.
Contribute to a strong "you build it, you run it" culture, where backend engineers own what they ship in production.
Ensure AI‐related services are built with secure coding and responsible data handling practices.
Cross‐functional collaboration Collaborate with Product Ma

📌 Remote Back End Software Engineer (Barcelona)
🏢 Spendesk
📍 Barcelona