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 general 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 achieveAre you a fit?Sounds awesome, right? Now, let’s make sure you’re a good fit for the role:Key ResponsibilitiesDesign, 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:EC2LambdaSQSSNSDynamoDBExperience 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-haveAI 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-laten

📌 Senior JavaScript Software Engineer (Barcelona)
🏢 Wizeline
📍 Barcelona