Senior JavaScript Software Engineer (Barcelona - Hybrid)

Wizeline·Barcelona, Spainsenior

In short

→Desarrollar servicios backend escalables con Node.js y AWS en entorno híbrido.
→Trabajar en arquitecturas event-driven con SQS, SNS y Lambda, optimizando rendimiento y escalabilidad.
→Destacado: Impulso en AI-tooling como parte del flujo de trabajo diario.

Excellent communication and collaboration skills.

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What they ask for

✓+5 años como ingeniero frontend (¡error en el texto! debería ser backend).
✓Experiencia sólida en Node.js y desarrollo backend.
✓Experiencia práctica con AWS (EC2, Lambda, SQS, SNS, DynamoDB).
✓Diseño de sistemas distribuidos escalables.
✓Conocimiento en arquitecturas asíncronas y eventos.
✓Habilidades sólidas de resolución de problemas y colaboración.

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

Node.jsAWSEC2LambdaSQSSNSDynamoDBRESTful APIsserverlessevent-driven architectures

Who should you write to at Wizeline?

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We are: Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact. With the right people and the right ideas, there’s no limit to what we can achieve Are you a fit? Sounds awesome, right? Now, let’s make sure you’re a good fit for the role: Key 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. Must-have Skills • +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. Nice-to-have: • AI Tooling Proficiency: Leverage one or more AI tools to optimize and augment day-to-day work, including drafting, analysis, research, or process automation. Provide recomm

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