Senior JavaScript Software Engineer

Jobtailor; Barcelona; Presencial; EUR 60.000 - 90.000; Jornada completa

Descripción de la vacante

Jobtailor is seeking a skilled Backend/Frontend Engineer to design, develop, and maintain scalable backend services using Node.js and AWS. You will build cloud-native solutions with Lambda, DynamoDB, and event-driven architectures, delivering low-latency services for cross-functional teams.

As part of a collaborative environment, you will participate in code reviews, optimize performance, and help shape engineering best practices.

Formación

• 5+ years of experience as a Frontend Engineer.
• Strong experience with Node.js and backend application development.
• Hands-on AWS experience (EC2, Lambda, SQS, SNS, DynamoDB).
• Experience designing scalable distributed systems.
• Knowledge of asynchronous programming and event-driven architectures.
• Experience building RESTful APIs and backend integrations.
• Excellent debugging and problem-solving skills.
• Strong communication and collaboration abilities.

Responsabilidades

• 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.

Conocimientos

Problem solving

Communication

Collaboration

Backend understanding

Herramientas

Node.js

AWS (EC2/Lambda/SQS/SNS/DynamoDB)

RESTful APIs

Distributed systems

Event-driven architectures

Descripción del empleo

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 Node.js 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 Node.js 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.