Senior JavaScript Software Engineer en Barcelona, España

Responsibilities

- Design, develop, and maintain scalable backend services using Node.js.
- Build and optimize cloud-native applications on AWS.
- Develop and maintain event-driven and messaging-based architectures using SQS and SNS.
- Design and manage serverless solutions with AWS Lambda.
- Work with DynamoDB to build high-performance, scalable data solutions.
- Collaborate with cross-functional teams to deliver reliable, low-latency backend services.
- Monitor, troubleshoot, and optimize system performance, availability, and scalability.
- Participate in code reviews and contribute to engineering best practices.

Requirements

• +5 years of experience working as a Frontend Engineer.
• Strong experience with https://jobeax.com/link/JSd7UYCSg572jJDY and backend application development.
• Hands‑on experience with AWS, including: EC2, Lambda, SQS, SNS, DynamoDB.
• Experience designing and developing scalable distributed systems.
• Knowledge of asynchronous programming and event‑driven architectures.
• Experience building RESTful APIs and backend integrations.
• Strong problem‑solving and debugging skills.
• Excellent communication and collaboration skills.

Core Competencies

Demonstrates expertise in designing and developing scalable backend services using https://jobeax.com/link/JSd7UYCSg572jJDY and AWS technologies, including serverless architectures and event‑driven systems. Strong problem‑solving abilities and effective collaboration skills are essential for delivering high‑performance applications.