JavaScript Software Engineer
Wizeline
Barcelona, Spain
5 days ago
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Role details
Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience required
5 years minimum
Working hours
Regular working hours
Job source
Tech stack
Artificial Intelligence
Amazon Web Services
Amazon Elastic Compute Cloud
Cloud Engineering
Code Review
Software Debugging
Distributed Systems
Amazon DynamoDB
Fault Tolerance
Node.Js
Performance Tuning
Software Engineering
+11 more
Systems Integration
Spring Cloud
AWS Lambda
Backend
Event Driven Architecture
Front End Software Development
Asynchronous Programming
Restful APIs
Amazon Simple Queue Service (SQS)
Data Pipelines
Serverless Computing
Job description
- 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.
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 recommendations on effective AI use and identify opportunities to streamline workflows.
- Experience building systems that process millions of messages per day with high reliability.
- Experience designing and optimizing low-latency distributed systems.
- Knowledge of graceful degradation strategies to ensure service resilience under failure conditions.
- Experience with high-availability, fault-tolerant, and cloud-native architectures.
- Familiarity with performance optimization and scalability best practices.
Experience developing projects using frameworks.What we offer:
- A High-Impact Environment
- Commitment to Professional Development
- Flexible and Collaborative Culture
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