***This is us*** At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000\+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and Ul design, managed services, product development, and software development. ***This is the job*** In **Argentina**, within the **fintech** industry, we are looking for a **Senior Node.js Developer** with 3–5 years of proven experience in backend development. The role requires solid expertise in Node.js, cloud environments, and scalable architectures, with a focus on building efficient and reliable backend solutions. ***This is you*** * 3–5 years of experience in backend development with Node.js. * Strong knowledge of microservices and/or event\-driven architectures. * Experience in deploying and managing applications on cloud platforms. * Familiarity with Serverless Framework or other Infrastructure as Code (IaC) tools. * Solid understanding of RESTful APIs design and integration. * Experience with NoSQL databases. * Ability to write clean, efficient, and well\-documented code. * Knowledge of agile methodologies and software development life cycles. * Strong communication and teamwork skills. * Proven experience designing and developing scalable and highly available architectures. * Nice\-to\-have skills: * Experience with **AWS serverless services**: Lambda, API Gateway, SQS, SNS, Step Functions, EventBridge, DynamoDB. * Knowledge of **TypeScript**. * ***This is your role*** * Design, develop, and maintain **backend applications** using Node.js. * Build and optimize **scalable, event\-driven, and microservices\-based architectures**. * Deploy, monitor, and maintain applications in **cloud environments**. * Apply **best practices** for clean code, testing, and documentation. * Collaborate with cross\-functional teams to ensure seamless product delivery. * Contribute to the **architecture design** of reliable, secure, and efficient systems. * Drive **continuous improvement** within the team through technical expertise and innovation. W*e take pride in the diverse skills and character of our teams, welcoming everyone to apply and contribute to our collective strength*.