Summary: Join a highly qualified team as a Middle Backend Developer to design, develop, and maintain scalable, secure, and highly available backend applications, contributing to global technological progress. Highlights: 1. Design and develop scalable, secure, and highly available backend applications. 2. Participate in designing distributed architectures based on microservices. 3. Contribute to global technological progress and develop your career. ***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 **Buenos Aires or Cordoba**, within the **banking** sector, we are actively seeking a **Middle** **Backend Developer** (**NodeJs and TypeScript**) to design, develop, and maintain scalable, secure, and highly available backend applications using these technologies. ***This is the team*** In this role, you will be a key member of a highly qualified team of professionals. Your primary responsibility will be to participate in the **design of distributed architectures** based on **microservices** and **event\-driven** systems. You will have the opportunity to make a significant contribution to global technological progress while developing your skills and career. ***This is you*** * **\+4 years** as a backend developer with **Node.js** and **TypeScript.** * Extensive experience in **REST API** design and development. * Knowledge of **microservices architecture** and distributed systems. * Experience with **AWS** (Lambda, SQS, SNS, DynamoDB, API Gateway, etc.). * Experience working with **CI/CD pipelines** and **deployment best practices.** * Experience with **relational** and/or **NoSQL databases.** * **Knowledge of testing** (unit and integration). Nice\-to\-have skills: * Experience in **financial systems** (payments, procurement, credit, risk). * Knowledge of **event\-driven architectures**. * Experience with **high\-concurrency** or **mission\-critical systems**. * Knowledge of **security best practices** (**OWASP**). ***This is your role*** * Design, develop, and maintain scalable, secure, and highly available **backend applications** using **Node.js and TypeScript**. * Participate in the design of distributed **architectures based on microservices** and **event\-driven systems**. * Create and evolve critical **REST APIs** and **services for financial products**. * Work on **high\-volume**, l**ow\-latency systems**, ensuring performance, resilience, and traceability (e.g., payment processing or clearing). * Collaborate with **product, architecture**, and **business teams** to translate requirements into technical solutions. * Contribute to **technical design decisions** and **propose improvements** and **best practices**. * Implement **cloud\-native solutions using AWS**. * Ensure quality through testing, monitoring, and observability. *At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.*