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# backend developer

- **Company:** Kintai
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Amazon S3, Cloud Computing Security, Amazon DynamoDB, Identity and Access Management, Python (Programming Language), Node.Js, NoSQL, Prometheus, SQL Databases, TypeScript, Web Services, Grafana, Backend, Servicebus, Amazon Relational Database Service, Apache Kafka, Functional Programming, Cloudwatch, Api Gateway, Amazon Simple Queue Service (SQS), Terraform
- **Published:** August 16, 2026
- **Apply:** https://www.jobleads.com/es/job/ea1a5fa91ca018e2e4ad3cc19ca5f53b7

## About the Role

* 6+ Years of professional backend experience;
 * Strong proficiency in TypeScript/Node.Js;
 * Solid experience with Python;
 * Experience creating and operating APIs and services in production;
 * Advanced knowledge of AWS, including Lambda, API Gateway, S3, RDS/DynamoDB, IAM, EventBridge, and other typical backend services;
 * Experience with messaging, streams, and integration patterns;
 * Experience with SQL and NoSQL databases;
 * Excellent organizational skills, autonomy, responsibility, and a habit of keeping up with the state of the art;
 * Clear communication and a product-focused approach centered on business impact, metrics, and reliability;
 * Nice to have: Experience in fintech, open banking, payments, or risk;
 * Observability with CloudWatch, OpenTelemetry, or Prometheus/Grafana;
 * Cloud security with KMS, Secrets Manager, or least-privilege IAM policies;
 * Knowledge of DDD or hexagonal architecture.

## Description

* Design and implement microservices and REST/GraphQL APIs mainly in TypeScript (Node.Js) and Python;
 * Build event-driven solutions integrating queues and streams such as SQS/SNS, Kinesis/EventBridge, or Kafka;
 * Orchestrate processes using BPM and Step Functions;
 * Design and operate AWS components including Lambda, API Gateway, S3, RDS/DynamoDB, and IAM, focusing on security, cost, and resilience;
 * Define Infrastructure as Code with Terraform or CDK;
 * Maintain CI/CD pipelines;
 * Ensure quality and observability;
 * Collaborate with the Product Owner to prioritize, estimate, and self-manage work in an agile environment;
 * Document architectural decisions and best practices to improve maintainability.


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