Senior Full Stack Software Engineer

About the role

We are looking for a Senior Full Stack Software Engineer to join a fast‑growing partner company in Spain. You will design, build, and maintain modern cloud‑native applications that handle large‑scale data processing and support critical business services.

Key responsibilities

• Design, develop, test, deploy and maintain full‑stack web applications using microservices and serverless architectures.
• Build scalable backend services with Node.js and create responsive user interfaces with React and modern UI frameworks.
• Implement serverless solutions on AWS (Lambda, SNS, SQS, S3, IAM, CloudWatch, RDS, DynamoDB).
• Write clean, maintainable production code and comprehensive technical documentation.
• Develop automated test suites, perform unit testing and contribute to overall QA.
• Collaborate with architects, UX teams, infrastructure specialists and other engineers to deliver end‑to‑end solutions.
• Monitor performance, troubleshoot issues and continuously improve reliability and scalability.
• Support DevOps practices, CI/CD pipelines and Infrastructure as Code initiatives.

Required profile

• Proven experience building cloud‑native full‑stack applications with Node.js and TypeScript/JavaScript.
• Strong frontend expertise with React and contemporary UI frameworks.
• Hands‑on experience designing microservices and serverless architectures.
• Advanced knowledge of AWS services, especially Lambda, SNS, SQS, S3, IAM, CloudWatch, RDS and DynamoDB.
• Ability to work in an Agile environment and share knowledge with cross‑functional teams.

Required skills

• Node.js
• React
• JavaScript
• TypeScript
• AWS (Lambda, SNS, SQS, S3, IAM, CloudWatch, RDS, DynamoDB)
• Microservices
• Serverless architecture
• CI/CD
• Infrastructure as Code