Senior Node.js Engineer

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 (Córdoba or Buenos Aires), within the financial industry, we are seeking a Senior Node.js Engineer to join the technology team of a leading bank. The successful candidate will design and implement scalable serverless architectures and develop resilient, maintainable services using AWS.

This is you

• 5+ years of hands-on development with Node.js, JavaScript, and TypeScript;

• Extensive background with databases (relational and/or NoSQL) across multiple projects;

• Strong experience with software testing and quality assurance (unit, integration, end-to-end);

• Practical knowledge of AWS services and building/operating applications in AWS;

• Experience with serverless architectures: CloudFormation, AWS SAM, or the Serverless Framework;

• Strong collaboration and mentoring skills; experience coordinating tasks across teams;

• Languages: Spanish — native; English — intermediate.

Nice-to-have skills:

• Familiarity with tools: Jira, Confluence, Visual Studio Code, terminal/CLI, Postman, VirtualBox, Git, GitLab;

• Hands-on experience with CI/CD pipelines and GitLab CI or similar;

• Observability experience: logging, metrics, tracing, and SRE practices;

• Prior experience with microservices, event-driven architectures, or containerization beyond VirtualBox (e.g., Docker, Kubernetes).

This is your role

• Design and implement reusable, maintainable, and well-documented Node.js software components;

• Architect solutions that make it easy to add future functionality and extensions;

• Help design and operate deployments using AWS and serverless patterns; ensure safe rollout and rollback procedures;

• Write and maintain automated tests and support test-driven development practices;

• Troubleshoot production issues, perform root-cause analysis, and drive fixes and postmortems;

• Contribute to documentation (design docs, runbooks, Confluence pages) and maintain a clear record of architectural decisions;

• Mentor and support colleagues by sharing knowledge, conducting pair programming or brown-bag sessions, and promoting continuous learning;

• Participate in and uphold best practices during code reviews, giving constructive feedback.

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.