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Wizeline

AI-powered digital products · agentic systems and workflows

Senior JavaScript Software Engineer (Barcelona - Hybrid)

BarcelonaPosted 16 months ago
Software engineeringSenior
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About the role

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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 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

• Global Opportunities

• Vibrant Community

• Total Rewards

*Specific benefits are determined by the employment type and location.

Find out more about our culture here.

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